:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --success: #10b981;
    --danger: #ef4444;
    --bg-color: #f9fafb;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --radius: 16px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 8px 24px -8px rgba(15, 23, 42, 0.12);
    --header-bg: rgba(255,255,255,0.9);
    --footer-bg: #ffffff;
    --input-bg: #f8fafc;
    --input-focus-bg: #ffffff;
    --code-bg: #f8fafc;
    --mark-bg: #c7d2fe;
    --mark-color: #1e1b4b;
}

[data-theme="dark"] {
    --primary: #818cf8;
    --primary-hover: #6366f1;
    --primary-light: #1e1b4b;
    --success: #34d399;
    --danger: #f87171;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px -8px rgba(0, 0, 0, 0.4);
    --header-bg: rgba(15,23,42,0.9);
    --footer-bg: #1e293b;
    --input-bg: #0f172a;
    --input-focus-bg: #1e293b;
    --code-bg: #0f172a;
    --mark-bg: #4f46e5;
    --mark-color: #f1f5f9;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { 
    font-family: 'Inter', sans-serif; 
    background: var(--bg-color);
    color: var(--text-main); min-height: 100vh; display: flex; flex-direction: column;
    transition: background 0.3s, color 0.3s;
}
::selection { background: rgba(129, 140, 248, 0.3); }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-track { background: var(--bg-color); }

header { background: var(--header-bg); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-color); padding: 16px 24px; position: sticky; top: 0; z-index: 100; transition: background 0.3s, border-color 0.3s; }
.header-nav { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }
.logo-area { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.logo-svg { width: 32px; height: 32px; fill: var(--primary); }
.logo-text { font-size: 22px; font-weight: 800; color: var(--text-main); }
.logo-text span { color: var(--primary); }
.nav-links { display: flex; gap: 16px; align-items: center; }

button.nav-link-btn { background: none; border: none; padding: 0; color: var(--text-muted); font-family: 'Inter', sans-serif; font-size: 14px; font-weight: 600; cursor: pointer; transition: color 0.2s; }
button.nav-link-btn:hover { color: var(--primary); }

.theme-toggle { background: none; border: 1px solid var(--border-color); border-radius: 8px; width: 36px; height: 36px; cursor: pointer; color: var(--text-main); display: flex; align-items: center; justify-content: center; transition: all 0.2s; }
.theme-toggle:hover { border-color: var(--primary); color: var(--primary); }
.theme-toggle svg { width: 18px; height: 18px; }

.container { max-width: 1200px; margin: 0 auto; padding: 48px 24px; width: 100%; flex: 1; }

#home-view { display: block; }
.hero { text-align: center; margin-bottom: 48px; }
.hero h1 { font-size: 48px; font-weight: 800; letter-spacing: -1px; color: var(--text-main); margin-bottom: 12px; }
.hero p { font-size: 18px; color: var(--text-muted); max-width: 600px; margin: 0 auto 24px; line-height: 1.6; }
.search-bar { max-width: 500px; margin: 0 auto; position: relative; }
.search-bar input { width: 100%; padding: 14px 20px 14px 48px; font-size: 16px; border: 1px solid var(--border-color); border-radius: 12px; font-family: 'Inter', sans-serif; box-shadow: var(--shadow-sm); transition: all 0.2s; background: var(--card-bg); color: var(--text-main); }
.search-bar input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1); }
.search-bar svg { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); width: 20px; height: 20px; color: var(--text-muted); }

.section-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 24px; }
.section-title { font-size: 24px; font-weight: 700; color: var(--text-main); }
button.view-all { background: none; border: none; padding: 0; color: var(--primary); font-family: 'Inter', sans-serif; font-weight: 600; font-size: 14px; cursor: pointer; display: flex; align-items: center; gap: 4px; transition: text-decoration 0.2s; }
button.view-all:hover { text-decoration: underline; }

.popular-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; margin-bottom: 56px; }
a.tool-card-home { position: relative; text-decoration: none; color: inherit; background: var(--card-bg); padding: 24px; border-radius: var(--radius); border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); transition: all 0.2s ease; cursor: pointer; text-align: left; display: flex; flex-direction: column; gap: 8px; }
a.tool-card-home:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary); }
.card-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 4px; }
.card-icon svg { width: 24px; height: 24px; }
a.tool-card-home h3 { font-size: 18px; font-weight: 700; color: var(--text-main); }
a.tool-card-home p { font-size: 14px; color: var(--text-muted); line-height: 1.5; }
.open-link { color: var(--primary); font-weight: 600; font-size: 13px; margin-top: auto; padding-top: 12px; }

.categories-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 32px; margin-bottom: 56px; }
.category-box h4 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 8px; border-bottom: 2px solid var(--border-color); padding-bottom: 8px; }
a.category-link { text-decoration: none; color: var(--text-main); display: flex; align-items: center; gap: 10px; padding: 8px 0; font-weight: 600; font-size: 14px; transition: color 0.2s; cursor: pointer; }
a.category-link:hover { color: var(--primary); }
.cat-icon-sm { width: 28px; height: 28px; border-radius: 6px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.cat-icon-sm svg { width: 16px; height: 16px; }

.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; background: var(--card-bg); padding: 48px 40px; border-radius: var(--radius); border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); }
.feature-item { text-align: center; }
.feature-icon { width: 40px; height: 40px; background: var(--primary-light); color: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; }
.feature-item h5 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.feature-item p { font-size: 13px; color: var(--text-muted); }

#tools-view { display: none; }
.tool-header-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; max-width: 800px; margin-left: auto; margin-right: auto; }
.back-btn { background: transparent; border: 1px solid var(--border-color); padding: 8px 16px; border-radius: 8px; cursor: pointer; color: var(--text-muted); font-weight: 600; display: flex; align-items: center; gap: 8px; transition: all 0.2s; }
.back-btn:hover { border-color: var(--primary); color: var(--primary); }
.tool-container { max-width: 800px; margin: 0 auto; background: var(--card-bg); padding: 40px; border-radius: var(--radius); border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); }
.tool-header { position: relative; text-align: center; margin-bottom: 30px; }
.tool-header h2 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.tool-header p { color: var(--text-muted); font-size: 15px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--primary); color: white; padding: 12px 24px; border: none; border-radius: 8px; cursor: pointer; font-size: 15px; font-weight: 600; text-decoration: none; margin-top: 16px; transition: background 0.2s; }
.btn:hover { background: var(--primary-hover); }
.btn-green { background: var(--success); }
.btn-green:hover { background: #059669; }
.btn-secondary { background: var(--card-bg); color: var(--text-main); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--bg-color); }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #dc2626; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.drop-zone { border: 2px dashed var(--border-color); background: var(--primary-light); border-radius: 12px; padding: 40px 20px; cursor: pointer; text-align: center; transition: all 0.2s; }
.drop-zone:hover { border-color: var(--primary); background: var(--primary-light); }
.drop-zone p { color: var(--primary); font-weight: 600; }
.slider-container { margin: 24px 0; }
input[type="range"] { width: 100%; height: 6px; background: var(--border-color); border-radius: 5px; margin-top: 10px; -webkit-appearance: none; accent-color: var(--primary); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; background: var(--primary); border-radius: 50%; cursor: pointer; border: 3px solid white; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }

.comp-smart-tip { display: none; background: var(--primary-light); border: 1px solid var(--border-color); padding: 12px 16px; border-radius: 8px; margin-bottom: 20px; font-size: 13px; color: var(--text-main); line-height: 1.5; }
.comp-smart-tip strong { color: var(--primary); }
.comp-mode-tabs { display: flex; gap: 8px; margin-bottom: 16px; background: var(--bg-color); padding: 4px; border-radius: 999px; width: fit-content; margin-left: auto; margin-right: auto; }
.comp-mode-tab { background: transparent; color: var(--text-muted); border: none; padding: 6px 16px; border-radius: 999px; cursor: pointer; font-weight: 600; font-size: 13px; transition: all 0.2s; }
.comp-mode-tab.active { background: var(--card-bg); color: var(--primary); box-shadow: var(--shadow-sm); }
.comp-stat-row { display: flex; justify-content: space-between; font-size: 11px; margin-top: 4px; }
.comp-stat-orig { color: var(--text-muted); }
.comp-stat-new { color: var(--success); font-weight: 700; }

.preview-container { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 24px; }
.preview-box { flex: 1; min-width: 200px; background: var(--input-bg); padding: 12px; border-radius: 8px; border: 1px solid var(--border-color); }
.preview-box h4 { margin-bottom: 8px; font-size: 13px; color: var(--text-muted); }
.preview-box img { max-width: 100%; border-radius: 6px; max-height: 200px; margin: 0 auto; display: block; }

#qrcode { display: flex; justify-content: center; margin-top: 24px; padding: 20px; background: var(--input-bg); border-radius: 12px; border: 1px solid var(--border-color); }
#qrcode img, #qrcode canvas { border: 8px solid white; border-radius: 8px; box-shadow: var(--shadow-sm); }
#qr-input, #text-area, .data-textarea { width: 100%; padding: 12px; border: 1px solid var(--border-color); border-radius: 8px; font-family: 'Inter', sans-serif; background: var(--input-bg); color: var(--text-main); transition: border 0.2s; }
#qr-input:focus, #text-area:focus, .data-textarea:focus { outline: none; border-color: var(--primary); background: var(--input-focus-bg); }
#text-area { height: 200px; resize: vertical; line-height: 1.5; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 12px; margin-top: 20px; }

.stat-box { background: var(--input-bg); padding: 16px; border-radius: 8px; border: 1px solid var(--border-color); text-align: center; }
.stat-box h3 { color: var(--primary); font-size: 20px; font-weight: 700; }
.stat-box p { color: var(--text-muted); font-size: 11px; text-transform: uppercase; }

.analyzer-section { margin-top: 24px; padding: 20px; border: 1px solid var(--border-color); border-radius: 12px; background: var(--input-bg); }
.analyzer-section h4 { margin-bottom: 12px; font-size: 15px; font-weight: 700; color: var(--text-main); }
.readability-meter { height: 8px; background: var(--border-color); border-radius: 4px; margin-top: 8px; overflow: hidden; }
.readability-fill { height: 100%; background: var(--success); border-radius: 4px; transition: width 0.3s; }
.keyword-tag { display: inline-block; background: var(--primary-light); color: var(--primary); padding: 4px 10px; border-radius: 6px; font-size: 13px; font-weight: 600; margin-right: 6px; margin-bottom: 6px; }
.insight-item { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 8px; font-size: 14px; color: var(--text-muted); }
.insight-item.warning { color: #d97706; }
.insight-item.success { color: var(--success); }
.sentiment-bar { display: flex; height: 24px; border-radius: 6px; overflow: hidden; margin-top: 12px; background: var(--border-color); }
.sentiment-positive { background: var(--success); transition: width 0.5s; }
.sentiment-neutral { background: #cbd5e1; transition: width 0.5s; }
.sentiment-negative { background: var(--danger); transition: width 0.5s; }

.conv-tabs { display: flex; justify-content: center; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; background: var(--bg-color); padding: 4px; border-radius: 999px; width: fit-content; margin-left: auto; margin-right: auto; }
.conv-tab { background: transparent; color: var(--text-muted); border: none; padding: 8px 16px; border-radius: 999px; cursor: pointer; font-weight: 600; font-size: 13px; transition: all 0.2s; }
.conv-tab.active { background: var(--card-bg); color: var(--primary); box-shadow: var(--shadow-sm); }
.conv-grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center; }
.conv-input-group { background: var(--input-bg); padding: 16px; border-radius: 12px; border: 1px solid var(--border-color); }
.conv-input-group label { display: block; font-size: 12px; font-weight: 600; color: var(--text-muted); margin-bottom: 8px; }
.conv-input-group input, .conv-input-group select { width: 100%; padding: 10px; border: 1px solid var(--border-color); border-radius: 6px; background: var(--card-bg); color: var(--text-main); margin-bottom: 8px; }

.conv-options { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; margin-bottom: 24px; flex-wrap: wrap; }
.conv-presets { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; }
.preset-btn { background: var(--primary-light); color: var(--primary); border: none; padding: 6px 12px; border-radius: 6px; cursor: pointer; font-size: 13px; font-weight: 600; transition: all 0.2s; }
.preset-btn:hover { background: var(--primary); color: white; }
.multi-result-item { background: var(--input-bg); padding: 12px; border-radius: 8px; border: 1px solid var(--border-color); }
.multi-result-item label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.multi-result-item span { font-size: 16px; font-weight: 700; color: var(--text-main); word-break: break-all; }
.history-item { background: var(--input-bg); padding: 10px 12px; border-radius: 6px; border: 1px solid var(--border-color); cursor: pointer; transition: all 0.2s; font-size: 14px; color: var(--text-main); display: flex; justify-content: space-between; align-items: center; }
.history-item:hover { border-color: var(--primary); background: var(--primary-light); }

.swap-btn { background: var(--card-bg); border: 1px solid var(--border-color); width: 36px; height: 36px; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--primary); }
.swap-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }
.calc-container { max-width: 320px; margin: 0 auto; background: var(--input-bg); padding: 16px; border-radius: 16px; border: 1px solid var(--border-color); }
.calc-display { width: 100%; height: 70px; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; margin-bottom: 12px; text-align: right; padding: 8px 16px; font-size: 32px; font-weight: 600; color: var(--text-main); overflow-x: auto; }
.calc-keys { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.calc-btn { padding: 16px; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; color: var(--text-main); }
.calc-btn:hover { background: var(--bg-color); }
.calc-btn.operator { background: var(--primary-light); color: var(--primary); border-color: var(--border-color); }
.calc-btn.equal { background: var(--primary); color: white; border-color: var(--primary); grid-column: span 2; }
.calc-btn.clear { background: #fef2f2; color: #ef4444; border-color: #fecaca; }
.pass-display-container { display: flex; gap: 8px; margin-bottom: 24px; }
#pass-display { flex: 1; padding: 12px; font-size: 16px; font-family: monospace; border: 1px solid var(--border-color); border-radius: 8px; background: var(--input-bg); color: var(--text-main); }
.btn-copy { background: var(--card-bg); border: 1px solid var(--border-color); padding: 0 16px; border-radius: 8px; cursor: pointer; font-weight: 600; color: var(--primary); }
.btn-copy:hover { background: var(--primary); color: white; border-color: var(--primary); }
.checkbox-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 16px; }
.checkbox-grid label { display: flex; align-items: center; gap: 8px; font-size: 14px; background: var(--input-bg); padding: 10px; border-radius: 8px; border: 1px solid var(--border-color); color: var(--text-main); }
.data-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.data-textarea { height: 200px; font-family: monospace; font-size: 13px; line-height: 1.5; }
.data-actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.status-text { text-align: center; font-weight: 600; margin-top: 12px; min-height: 24px; }
.color-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center; }
.color-preview { height: 100%; min-height: 150px; border-radius: 12px; border: 1px solid var(--border-color); background: #4f46e5; }
.color-input-group { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.color-input-group label { width: 40px; font-weight: 700; font-size: 12px; }
.color-input-group input { flex: 1; padding: 10px; border: 1px solid var(--border-color); border-radius: 6px; font-family: monospace; background: var(--card-bg); color: var(--text-main); }
.timer-display { font-size: 72px; font-weight: 700; text-align: center; margin: 16px 0; font-variant-numeric: tabular-nums; color: var(--text-main); }
.timer-mode { text-align: center; font-size: 18px; font-weight: 700; color: var(--primary); text-transform: uppercase; margin-bottom: 16px; }
.timer-controls { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

.qr-tabs { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.qr-tab { background: var(--bg-color); border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; font-weight: 600; font-size: 13px; color: var(--text-muted); transition: all 0.2s; }
.qr-tab.active { background: var(--primary); color: white; }
.qr-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.qr-settings-group { background: var(--input-bg); padding: 16px; border-radius: 12px; border: 1px solid var(--border-color); margin-bottom: 16px; }
.qr-settings-group label { display: block; font-size: 12px; font-weight: 600; color: var(--text-muted); margin-bottom: 5px; }
.qr-settings-group input, .qr-settings-group select, .qr-settings-group textarea { width: 100%; padding: 8px; border: 1px solid var(--border-color); border-radius: 6px; background: var(--card-bg); color: var(--text-main); margin-bottom: 12px; font-family: 'Inter', sans-serif; font-size: 14px; }
.qr-settings-group input:last-child, .qr-settings-group select:last-child, .qr-settings-group textarea:last-child { margin-bottom: 0; }
.qr-preview-container { text-align: center; padding: 20px; background: var(--input-bg); border-radius: 12px; border: 1px solid var(--border-color); position: sticky; top: 80px; }
#qr-preview-canvas { max-width: 100%; height: auto; border: 8px solid white; border-radius: 8px; box-shadow: var(--shadow-sm); }
.qr-warning { color: var(--danger); font-size: 12px; margin-top: 8px; font-weight: 600; display: none; }
.qr-batch-area { margin-top: 24px; }

.pdf-thumb-list { display: flex; gap: 12px; overflow-x: auto; padding-bottom: 12px; margin-bottom: 20px; }
.pdf-thumb-item { position: relative; border: 1px solid var(--border-color); border-radius: 8px; padding: 4px; background: var(--card-bg); cursor: grab; flex-shrink: 0; display: flex; flex-direction: column; align-items: center; }
.pdf-thumb-item.dragging { opacity: 0.5; border-color: var(--primary); }
.pdf-thumb-item img { width: 80px; height: 80px; object-fit: cover; border-radius: 4px; pointer-events: none; }
.pdf-thumb-actions { display: flex; gap: 4px; margin-top: 6px; }
.pdf-thumb-actions button { background: var(--bg-color); border: none; border-radius: 4px; width: 24px; height: 24px; cursor: pointer; font-size: 12px; display: flex; align-items: center; justify-content: center; color: var(--text-muted); transition: all 0.2s; }
.pdf-thumb-actions button:hover { background: var(--primary); color: white; }
.pdf-thumb-actions button.danger:hover { background: var(--danger); }
.pdf-settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
.pdf-settings-group { background: var(--input-bg); padding: 16px; border-radius: 12px; border: 1px solid var(--border-color); }
.pdf-settings-group label { display: block; font-size: 12px; font-weight: 600; color: var(--text-muted); margin-bottom: 8px; }
.pdf-settings-group input, .pdf-settings-group select { width: 100%; padding: 8px; border: 1px solid var(--border-color); border-radius: 6px; background: var(--card-bg); color: var(--text-main); margin-bottom: 8px; }
.pdf-settings-group input:last-child, .pdf-settings-group select:last-child { margin-bottom: 0; }

.rename-table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 13px; }
.rename-table th, .rename-table td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border-color); }
.rename-table th { color: var(--text-muted); font-weight: 600; }
.rename-table td { color: var(--text-main); word-break: break-all; }
.rename-panel { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; background: var(--input-bg); padding: 16px; border-radius: 12px; border: 1px solid var(--border-color); }
.rename-panel label { font-size: 13px; font-weight: 600; color: var(--text-muted); }
.rename-panel input[type="text"], .rename-panel input[type="number"], .rename-panel select { width: 100%; padding: 10px; border: 1px solid var(--border-color); border-radius: 6px; background: var(--card-bg); color: var(--text-main); margin-bottom: 8px; }
.rename-panel label input[type="checkbox"] { width: auto; margin-right: 6px; vertical-align: middle; }
.rename-row { display: flex; gap: 8px; flex-wrap: wrap; }
.rename-row > * { flex: 1; min-width: 80px; }
.rename-summary { font-size: 13px; color: var(--text-muted); font-weight: 600; }

.pdf-ext-settings { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
.pdf-ext-settings label { display:block; font-size:12px; font-weight:600; color:var(--text-muted); margin-bottom:5px; }
.pdf-ext-settings input, .pdf-ext-settings select { width: 100%; padding: 8px 12px; border:1px solid var(--border-color); border-radius: 6px; background:var(--card-bg); color:var(--text-main); }
.pdf-ext-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px; margin-bottom: 20px; }
.pdf-ext-card { position: relative; border: 2px solid transparent; border-radius: 8px; cursor: pointer; overflow: hidden; background: var(--input-bg); }
.pdf-ext-card.selected { border-color: var(--primary); }
.pdf-ext-card img { width: 100%; height: 100px; object-fit: contain; background: var(--bg-color); }
.pdf-ext-card .pdf-ext-checkbox { position: absolute; top: 4px; right: 4px; width: 24px; height: 24px; background: white; border-radius: 4px; display: flex; align-items: center; justify-content: center; font-size: 16px; color: var(--primary); box-shadow: 0 1px 2px rgba(0,0,0,0.1); }
.pdf-ext-card .pdf-ext-meta { font-size: 10px; color: var(--text-muted); text-align: center; padding: 4px; line-height: 1.3; }
.pdf-ext-lightbox { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); display: none; z-index: 1001; justify-content: center; align-items: center; padding: 20px; }
.pdf-ext-lightbox img { max-width: 90%; max-height: 80vh; border-radius: 8px; background: white; }
.pdf-ext-lightbox p { color: white; text-align: center; margin-top: 12px; font-size: 14px; }

.pdf2txt-settings { margin-bottom: 16px; }
.pdf2txt-settings label { display:block; font-size:12px; font-weight:600; color:var(--text-muted); margin-bottom:5px; }
.pdf2txt-settings input { width: 100%; max-width: 300px; padding: 8px 12px; border:1px solid var(--border-color); border-radius: 6px; background:var(--card-bg); color:var(--text-main); }
.pdf2txt-search-bar { display: flex; gap: 8px; margin-bottom: 12px; align-items: center; }
.pdf2txt-search-bar input { flex: 1; padding: 8px 12px; border: 1px solid var(--border-color); border-radius: 6px; font-size: 14px; background: var(--card-bg); color: var(--text-main); }
.pdf2txt-search-bar button { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 6px; padding: 8px 12px; cursor: pointer; font-weight: 600; color: var(--text-muted); }
.pdf2txt-search-bar button:hover { background: var(--primary); color: white; border-color: var(--primary); }
.pdf2txt-stats { display: flex; gap: 16px; font-size: 12px; color: var(--text-muted); margin-bottom: 16px; justify-content: center; }
.pdf2txt-stats strong { color: var(--text-main); }

/* Favorites & Star Buttons */
.fav-btn { background: none; border: none; cursor: pointer; padding: 0; color: var(--border-color); transition: color 0.2s, transform 0.1s; display: flex; align-items: center; justify-content: center; line-height: 0; }
.fav-btn svg { width: 20px; height: 20px; pointer-events: none; }
.fav-btn:hover { color: #f59e0b; transform: scale(1.1); }
.fav-btn.active { color: #f59e0b; }
.fav-btn:active { transform: scale(0.95); }
a.tool-card-home .fav-btn { position: absolute; top: 16px; right: 16px; z-index: 2; }
a.category-link .fav-btn { margin-left: auto; padding: 4px; }
a.category-link .fav-btn svg { width: 16px; height: 16px; }
.tool-header-fav { position: absolute; top: -4px; right: 0; }
.tool-header-fav svg { width: 24px; height: 24px; }

/* Markdown Preview */
.md-preview { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 20px; min-height: 200px; overflow-y: auto; }
.md-preview h1 { font-size: 24px; font-weight: 700; margin: 16px 0 8px; color: var(--text-main); }
.md-preview h2 { font-size: 20px; font-weight: 700; margin: 14px 0 6px; color: var(--text-main); }
.md-preview h3 { font-size: 18px; font-weight: 600; margin: 12px 0 6px; color: var(--text-main); }
.md-preview p { margin: 8px 0; line-height: 1.6; color: var(--text-main); }
.md-preview ul, .md-preview ol { margin: 8px 0; padding-left: 24px; color: var(--text-main); }
.md-preview li { margin: 4px 0; }
.md-preview code { background: var(--code-bg); padding: 2px 6px; border-radius: 4px; font-family: monospace; font-size: 13px; color: var(--text-main); }
.md-preview pre { background: var(--code-bg); padding: 12px; border-radius: 8px; overflow-x: auto; margin: 12px 0; border: 1px solid var(--border-color); }
.md-preview pre code { background: none; padding: 0; }
.md-preview blockquote { border-left: 4px solid var(--primary); margin: 12px 0; padding: 8px 16px; background: var(--input-bg); color: var(--text-muted); border-radius: 0 8px 8px 0; }
.md-preview a { color: var(--primary); text-decoration: underline; }
.md-preview table { border-collapse: collapse; margin: 12px 0; width: 100%; color: var(--text-main); }
.md-preview th, .md-preview td { border: 1px solid var(--border-color); padding: 8px 12px; text-align: left; }
.md-preview th { background: var(--input-bg); font-weight: 600; }
.md-preview img { max-width: 100%; border-radius: 8px; margin: 12px 0; }
.md-preview hr { border: none; border-top: 2px solid var(--border-color); margin: 20px 0; }
.md-preview strong { font-weight: 700; }
.md-preview em { font-style: italic; }

#seo-content { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border-color); display: none; }
#seo-content h2 { font-size: 20px; font-weight: 700; margin-bottom: 16px; color: var(--text-main); }
.faq-item { background: var(--input-bg); border: 1px solid var(--border-color); border-radius: 8px; margin-bottom: 12px; padding: 16px; }
.faq-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; color: var(--text-main); }
.faq-item p { font-size: 14px; color: var(--text-muted); line-height: 1.5; }

.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(15, 23, 42, 0.6); backdrop-filter: blur(4px); display: none; justify-content: center; align-items: center; z-index: 1000; padding: 20px; }
.modal-box { background: var(--card-bg); padding: 32px; border-radius: 16px; max-width: 500px; width: 100%; box-shadow: 0 20px 40px -12px rgba(0,0,0,0.25); animation: fadeSlideIn 0.3s ease; }
@keyframes fadeSlideIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.modal-box h3 { font-size: 22px; font-weight: 700; margin-bottom: 16px; color: var(--text-main); }
.modal-box p { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 24px; }
.modal-close-btn { background: var(--primary); color: white; border: none; padding: 10px 24px; border-radius: 8px; cursor: pointer; font-weight: 600; font-size: 14px; float: right; transition: background 0.2s; }
.modal-close-btn:hover { background: var(--primary-hover); }

footer { background: var(--footer-bg); border-top: 1px solid var(--border-color); padding: 40px 24px; margin-top: auto; transition: background 0.3s; }
.footer-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer-col h5 { font-size: 14px; font-weight: 700; margin-bottom: 16px; color: var(--text-main); }
.footer-col button.nav-link-btn { display: block; margin-bottom: 8px; text-align: left; }
.footer-col p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
.footer-bottom { max-width: 1200px; margin: 24px auto 0; padding-top: 24px; border-top: 1px solid var(--border-color); text-align: center; color: var(--text-muted); font-size: 13px; }

/* ==========================================
   TOOL 5: ADVANCED CALCULATOR
   ========================================== */

#advanced-calculator {
    width: 100%;
    max-width: 440px;
    margin: 0 auto;
    padding: 18px;
    box-sizing: border-box;
}

/* MODE TABS */

#advanced-calculator .conv-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-bottom: 14px;
    padding: 4px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
}

#advanced-calculator .conv-tab {
    min-height: 38px;
    padding: 8px 10px;
    border: none;
    border-radius: 7px;
    background: transparent;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

#advanced-calculator .conv-tab:hover {
    color: var(--text-main);
    background: var(--card-bg);
}

#advanced-calculator .conv-tab.active {
    background: var(--primary);
    color: white;
}

/* DISPLAY */

#advanced-calculator .calc-display {
    width: 100%;
    height: 82px;
    box-sizing: border-box;
    margin-bottom: 8px;
    padding: 10px 14px;
    border-radius: 10px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    text-align: right;
    font-size: 32px;
    font-weight: 600;
    font-family: inherit;
    font-variant-numeric: tabular-nums;
    overflow-x: auto;
}

/* STATUS */

#advanced-calculator .calc-status-row {
    display: flex;
    align-items: center;
    min-height: 20px;
    margin-bottom: 10px;
    padding: 0 4px;
    font-size: 12px;
    color: var(--text-muted);
}

#advanced-calculator #calc-mem-indicator {
    display: none;
    font-weight: 700;
    color: var(--primary);
}

#advanced-calculator #calc-base-indicator {
    display: none;
    margin-left: 8px;
    font-weight: 700;
}

#advanced-calculator #calc-angle-mode {
    margin-left: auto;
    font-weight: 600;
}

/* ALL KEY GRIDS */

#advanced-calculator .calc-keys {
    display: grid;
}

/* MEMORY */

#advanced-calculator .calc-memory-keys {
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    margin-bottom: 8px;
}

/* SCIENTIFIC */

#advanced-calculator .calc-scientific-keys {
    display: none;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    margin-bottom: 8px;
}

/* PROGRAMMER */

#advanced-calculator .calc-programmer-section {
    display: none;
    margin-bottom: 8px;
}

#advanced-calculator .calc-programmer-base {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    margin-bottom: 6px;
}

#advanced-calculator .calc-programmer-ops {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    margin-bottom: 6px;
}

#advanced-calculator .calc-programmer-inputs {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
    margin-bottom: 6px;
}

/* STANDARD KEYPAD */

#advanced-calculator #calc-standard-keys {
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}

/* BUTTONS */

#advanced-calculator .calc-btn {
    min-width: 0;
    min-height: 48px;
    padding: 10px 8px;
    border: 1px solid var(--border-color);
    border-radius: 9px;
    background: var(--card-bg);
    color: var(--text-main);
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    transition:
        background 0.15s ease,
        border-color 0.15s ease,
        transform 0.08s ease;
}

#advanced-calculator .calc-btn:hover {
    background: var(--bg-color);
    border-color: var(--primary);
}

#advanced-calculator .calc-btn:active {
    transform: scale(0.97);
}

#advanced-calculator .calc-btn.operator {
    background: var(--primary-light);
    color: var(--primary);
}

#advanced-calculator .calc-btn.clear {
    background: #fef2f2;
    color: #ef4444;
    border-color: #fecaca;
}

#advanced-calculator .calc-btn.equal {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

#advanced-calculator .calc-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

/* MEMORY / SCIENTIFIC SMALL BUTTONS */

#advanced-calculator .calc-memory-keys .calc-btn,
#advanced-calculator .calc-scientific-keys .calc-btn {
    min-height: 40px;
    font-size: 13px;
}

/* PROGRAMMER SMALL BUTTONS */

#advanced-calculator .calc-programmer-base .calc-btn,
#advanced-calculator .calc-programmer-ops .calc-btn,
#advanced-calculator .calc-programmer-inputs .calc-btn {
    min-height: 40px;
    font-size: 13px;
}

/* ACTIVE BASE */

#advanced-calculator .calc-programmer-base .active-base {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* HISTORY */

#advanced-calculator .calc-history-panel {
    display: none;
    margin-top: 12px;
    max-height: 180px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 8px;
    background: var(--input-bg);
}

#advanced-calculator .calc-history-empty {
    padding: 12px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

#advanced-calculator .calc-history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 9px 6px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
}

#advanced-calculator .calc-history-item:last-child {
    border-bottom: none;
}

#advanced-calculator .calc-history-expression {
    color: var(--text-muted);
    font-size: 12px;
    overflow-wrap: anywhere;
}

#advanced-calculator .calc-history-result {
    font-size: 13px;
    font-weight: 600;
    overflow-wrap: anywhere;
}

/* COPY / PASTE AREA */

#advanced-calculator .calc-copy-area {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
}

#advanced-calculator .calc-copy-area .btn {
    margin-top: 0;
}

/* MOBILE */

@media (max-width: 450px) {

    #advanced-calculator {
        padding: 12px;
    }

    #advanced-calculator .calc-display {
        height: 72px;
        font-size: 27px;
    }

    #advanced-calculator .calc-scientific-keys {
        grid-template-columns: repeat(4, 1fr);
    }

    #advanced-calculator .calc-programmer-ops {
        grid-template-columns: repeat(4, 1fr);
    }

    #advanced-calculator .calc-btn {
        min-height: 44px;
    }

}

/* TOOL 6: ADVANCED PASSWORD GENERATOR */
.pass-gen-tabs { display: flex; gap: 8px; margin-bottom: 24px; background: var(--bg-color); padding: 4px; border-radius: 999px; width: fit-content; margin-left: auto; margin-right: auto; }
.pass-output-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; max-height: 300px; overflow-y: auto; padding-right: 4px; }
.pass-item { display: flex; align-items: center; gap: 8px; background: var(--input-bg); padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border-color); }
.pass-item code { flex: 1; font-family: monospace; font-size: 15px; color: var(--text-main); word-break: break-all; }
.pass-item .btn-copy { padding: 4px 10px; font-size: 12px; margin: 0; }
.strength-meter { height: 8px; background: var(--border-color); border-radius: 4px; margin-top: 16px; overflow: hidden; }
.strength-fill { height: 100%; width: 0%; transition: width 0.3s, background 0.3s; }
.entropy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; text-align: center; }
.entropy-box { background: var(--input-bg); padding: 12px; border-radius: 8px; border: 1px solid var(--border-color); }
.entropy-box h3 { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.entropy-box p { font-size: 11px; color: var(--text-muted); text-transform: uppercase; }

/* TOOL 8: ADVANCED JSON FORMATTER */
.json-stats-bar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.json-stat-item { background: var(--input-bg); padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border-color); font-size: 13px; color: var(--text-muted); }
.json-stat-item strong { color: var(--primary); font-weight: 700; font-family: monospace; }
.json-tree-container { background: var(--input-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 16px; max-height: 500px; overflow-y: auto; font-family: monospace; font-size: 13px; line-height: 1.5; }
.json-tree-search { margin-bottom: 12px; display: flex; gap: 8px; }
.json-tree-search input { flex: 1; padding: 8px; border: 1px solid var(--border-color); border-radius: 6px; background: var(--card-bg); color: var(--text-main); }
.json-tree { list-style: none; padding-left: 0; margin: 0; }
.json-tree ul { list-style: none; padding-left: 24px; margin: 0; border-left: 1px dashed var(--border-color); }
.json-tree li { position: relative; padding-left: 20px; cursor: default; }
.json-tree li.collapsible::before { content: '▼'; position: absolute; left: 4px; top: 2px; font-size: 10px; color: var(--text-muted); cursor: pointer; transition: transform 0.2s; }
.json-tree li.collapsed::before { content: '▶'; }
.json-tree li.collapsed > ul { display: none; }
.json-key { color: #ff79c6; } /* Pink for keys */
.json-string { color: #50fa7b; } /* Green for strings */
.json-number { color: #bd93f9; } /* Purple for numbers */
.json-bool { color: #ffb86c; } /* Orange for booleans */
.json-null { color: #8be9fd; font-style: italic; } /* Cyan for null */
.json-bracket { color: var(--text-muted); font-weight: bold; }
.json-search-highlight { background: rgba(255, 235, 59, 0.4); border-radius: 2px; }
.json-error-box { background: rgba(239, 68, 68, 0.1); border: 1px solid var(--danger); color: var(--danger); padding: 12px; border-radius: 8px; margin-bottom: 16px; font-family: monospace; font-size: 13px; white-space: pre-wrap; }

/* TOOL 9: ADVANCED URL ENCODER / DECODER */
.urlenc-stats { display: flex; gap: 12px; font-size: 12px; color: var(--text-muted); margin-bottom: 16px; justify-content: center; }
.urlenc-stats span { background: var(--input-bg); padding: 6px 12px; border-radius: 6px; border: 1px solid var(--border-color); }
.urlenc-stats strong { color: var(--text-main); }
.urlenc-params-box { margin-top: 20px; background: var(--input-bg); border: 1px solid var(--border-color); border-radius: 12px; padding: 16px; display: none; }
.urlenc-params-box h4 { margin-bottom: 12px; font-size: 14px; font-weight: 700; color: var(--text-main); }
.urlenc-param-item { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 8px; }
.urlenc-param-item input { padding: 8px; border: 1px solid var(--border-color); border-radius: 6px; background: var(--card-bg); color: var(--text-main); font-size: 13px; }
.urlenc-param-item input[readonly] { background: var(--bg-color); opacity: 0.8; }

/* TOOL 10: ADVANCED COLOR CONVERTER */
.color-adv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.color-adv-left { display: flex; flex-direction: column; gap: 16px; }
.color-adv-preview { height: 150px; border-radius: 12px; border: 1px solid var(--border-color); display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 18px; }
.color-input-row { display: flex; align-items: center; gap: 8px; }
.color-input-row label { width: 60px; font-weight: 700; font-size: 12px; color: var(--text-muted); }
.color-input-row input { flex: 1; padding: 8px; border: 1px solid var(--border-color); border-radius: 6px; background: var(--card-bg); color: var(--text-main); font-family: monospace; }
.color-alpha-slider { width: 100%; height: 8px; -webkit-appearance: none; appearance: none; background: linear-gradient(to right, transparent, var(--primary)); border-radius: 4px; outline: none; }
.color-alpha-slider::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 16px; height: 16px; background: white; border: 2px solid var(--primary); border-radius: 50%; cursor: pointer; }
.color-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.color-actions button { flex: 1; min-width: 80px; padding: 8px; font-size: 12px; }
.contrast-box { background: var(--input-bg); border: 1px solid var(--border-color); border-radius: 12px; padding: 16px; margin-top: 16px; }
.contrast-preview { height: 80px; border-radius: 8px; display: flex; flex-direction: column; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; margin-bottom: 12px; }
.contrast-stats { display: flex; justify-content: space-between; align-items: center; }
.contrast-badges { display: flex; gap: 8px; }
.contrast-badge { padding: 4px 8px; border-radius: 4px; font-size: 11px; font-weight: 700; }
.cb-pass { background: var(--success); color: white; }
.cb-fail { background: var(--danger); color: white; }
.palette-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); gap: 12px; margin-top: 16px; }
.palette-swatch { height: 80px; border-radius: 8px; cursor: pointer; display: flex; align-items: flex-end; justify-content: center; padding-bottom: 8px; font-size: 10px; font-weight: 600; color: white; text-shadow: 0 1px 2px rgba(0,0,0,0.5); transition: transform 0.2s; border: 1px solid var(--border-color); }
.palette-swatch:hover { transform: scale(1.05); }
.palette-section { margin-top: 24px; }
.palette-section h4 { font-size: 14px; font-weight: 700; margin-bottom: 8px; color: var(--text-main); }

/* TOOL 11: ADVANCED URL SLUG GENERATOR */
.slug-stats { display: flex; gap: 12px; margin-bottom: 16px; }
.slug-stat { background: var(--input-bg); padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border-color); font-size: 13px; color: var(--text-muted); }
.slug-stat strong { color: var(--primary); font-weight: 700; font-family: monospace; }
.slug-drop-zone { border: 2px dashed var(--border-color); background: var(--primary-light); border-radius: 12px; padding: 20px; cursor: pointer; text-align: center; transition: all 0.2s; margin-bottom: 20px; }
.slug-drop-zone:hover { border-color: var(--primary); }
.slug-drop-zone p { color: var(--primary); font-weight: 600; margin: 0; }

/* TOOL 12: ADVANCED POMODORO TIMER */
.pom-container { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.pom-ring-wrap { position: relative; width: 260px; height: 260px; }
.pom-ring-svg { transform: rotate(-90deg); width: 100%; height: 100%; }
.pom-ring-bg { stroke: var(--border-color); fill: none; stroke-width: 10; }
.pom-ring-progress { stroke: var(--primary); fill: none; stroke-width: 10; stroke-linecap: round; transition: stroke-dashoffset 0.5s linear, stroke 0.3s; }
.pom-ring-text { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; }
.pom-time { font-size: 56px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--text-main); line-height: 1; }
.pom-mode { font-size: 18px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--primary); margin-top: 8px; }
.pom-controls { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.pom-stats { display: flex; gap: 24px; justify-content: center; font-size: 14px; color: var(--text-muted); }
.pom-stats strong { color: var(--text-main); font-size: 18px; display: block; text-align: center; }
.pom-settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; width: 100%; max-width: 500px; margin-top: 16px; }
.pom-settings-grid .pdf-settings-group { background: var(--input-bg); padding: 16px; border-radius: 12px; border: 1px solid var(--border-color); }
.pom-settings-grid label { display:block; font-size:12px; font-weight:600; color:var(--text-muted); margin-bottom:5px; }
.pom-settings-grid input { width: 100%; padding: 8px; border: 1px solid var(--border-color); border-radius: 6px; background: var(--card-bg); color: var(--text-main); }
.pom-kbd { background: var(--bg-color); border: 1px solid var(--border-color); border-bottom-width: 2px; border-radius: 4px; padding: 2px 6px; font-family: monospace; font-size: 11px; color: var(--text-muted); }

/* TOOL 14: ADVANCED PASSPORT PHOTO MAKER */
.pp-main-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.pp-canvas-wrap { position: relative; background: var(--input-bg); border-radius: 12px; border: 1px solid var(--border-color); display: flex; align-items: center; justify-content: center; padding: 20px; }
#pp-preview-canvas { max-width: 100%; height: auto; border-radius: 4px; box-shadow: 0 4px 12px rgba(0,0,0,0.15); cursor: grab; touch-action: none; }
#pp-preview-canvas:active { cursor: grabbing; }
.pp-guide-overlay { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 60%; height: 75%; pointer-events: none; border: 2px dashed rgba(255, 255, 255, 0.5); border-radius: 50%; z-index: 10; }
.pp-guide-overlay::after { content: ''; position: absolute; top: 50%; left: 0; width: 100%; height: 1px; background: rgba(255,0,0,0.5); }
.pp-controls-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pp-controls-grid .pdf-settings-group { margin-bottom: 0; }
.pp-slider-val { color: var(--primary); font-weight: 700; }
@media (max-width: 768px) { .pp-main-grid { grid-template-columns: 1fr; } }

/* TOOL 15: ADVANCED CASE CONVERTER */
.case-btn-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; margin-bottom: 24px; }
.case-btn { background: var(--input-bg); border: 1px solid var(--border-color); color: var(--text-main); padding: 12px; border-radius: 8px; cursor: pointer; font-weight: 600; font-size: 14px; transition: all 0.2s; }
.case-btn:hover { border-color: var(--primary); background: var(--primary-light); color: var(--primary); }
.case-options { display: flex; gap: 24px; margin-bottom: 16px; flex-wrap: wrap; }
.case-options label { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-muted); cursor: pointer; }
.case-stats { display: flex; gap: 16px; margin-top: 16px; font-size: 13px; color: var(--text-muted); }
.case-stats span { background: var(--input-bg); padding: 6px 12px; border-radius: 6px; border: 1px solid var(--border-color); }
.case-stats strong { color: var(--primary); font-weight: 700; }

/* TOOL 16: ADVANCED LOREM IPSUM GENERATOR */
.lorem-options-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
.lorem-options-grid .pdf-settings-group { margin-bottom: 0; }
.lorem-preview { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 20px; min-height: 200px; overflow-y: auto; line-height: 1.6; color: var(--text-main); }
.lorem-preview h2 { font-size: 20px; font-weight: 700; margin: 10px 0; }
.lorem-preview ul { margin-left: 20px; }
.lorem-preview p { margin-bottom: 10px; }

/* TOOL 18: ADVANCED BULK FILE RENAMER */
.rename-table tr.conflict { background: rgba(239, 68, 68, 0.1); }
.rename-table tr.conflict td:last-child { color: var(--danger); font-weight: 700; }
.rename-table tr.invalid { background: rgba(245, 158, 11, 0.1); }
.rename-table tr.invalid td:last-child { color: #f59e0b; font-weight: 700; }
.rename-vars { font-size: 11px; color: var(--text-muted); background: var(--bg-color); padding: 4px 8px; border-radius: 4px; margin-top: 8px; display: inline-block; }

/* TOOL 22: ADVANCED HASH GENERATOR */
.hash-results-grid { display: grid; grid-template-columns: 1fr; gap: 12px; margin-bottom: 24px; }
.hash-result-item { display: flex; align-items: center; gap: 8px; background: var(--input-bg); padding: 12px; border-radius: 8px; border: 1px solid var(--border-color); }
.hash-result-item label { font-weight: 700; font-size: 13px; color: var(--primary); width: 80px; flex-shrink: 0; }
.hash-result-item input { flex: 1; background: transparent; border: none; color: var(--text-main); font-family: monospace; font-size: 13px; outline: none; }
.hash-file-table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 13px; }
.hash-file-table th, .hash-file-table td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border-color); }
.hash-file-table th { color: var(--text-muted); font-weight: 600; }
.hash-file-table td { color: var(--text-main); word-break: break-all; }
.hash-progress-bar { height: 8px; background: var(--border-color); border-radius: 4px; margin-top: 12px; overflow: hidden; display: none; }
.hash-progress-fill { height: 100%; background: var(--primary); width: 0%; transition: width 0.2s; }
.hash-compare-box { background: var(--input-bg); padding: 20px; border-radius: 12px; border: 1px solid var(--border-color); margin-top: 24px; }
.hash-compare-result { text-align: center; font-weight: 700; font-size: 16px; margin-top: 12px; height: 24px; }
.hash-match { color: var(--success); }
.hash-mismatch { color: var(--danger); }

/* TOOL 23: ADVANCED REGEX TESTER */
.regex-tester-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
.regex-input-bar { display: flex; align-items: center; gap: 10px; background: var(--input-bg); padding: 10px; border-radius: 8px; border: 1px solid var(--border-color); }
.regex-input-bar span { font-family: monospace; font-size: 18px; color: var(--text-muted); }
.regex-input-bar input { flex: 1; background: transparent; border: none; color: var(--primary); font-family: monospace; font-size: 16px; outline: none; font-weight: 600; }
.regex-flags-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.regex-flag-btn { background: var(--input-bg); border: 1px solid var(--border-color); padding: 6px 12px; border-radius: 999px; cursor: pointer; font-size: 13px; color: var(--text-muted); transition: all 0.2s; }
.regex-flag-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.regex-results-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.regex-result-box { background: var(--input-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 16px; font-family: monospace; font-size: 13px; white-space: pre-wrap; word-break: break-all; min-height: 150px; color: var(--text-main); }
.regex-mark { background: rgba(255, 235, 59, 0.4); color: var(--text-main); border-radius: 3px; padding: 0 2px; }
.regex-match-list { max-height: 200px; overflow-y: auto; margin-top: 12px; }
.regex-match-item { background: var(--card-bg); border: 1px solid var(--border-color); padding: 8px 12px; border-radius: 6px; margin-bottom: 6px; font-size: 13px; font-family: monospace; cursor: pointer; transition: border 0.2s; }
.regex-match-item:hover { border-color: var(--primary); }
.regex-match-item .meta { font-size: 11px; color: var(--text-muted); display: block; margin-top: 4px; }
.regex-group-item { background: var(--card-bg); padding: 8px; border-radius: 6px; margin-bottom: 6px; border: 1px solid var(--border-color); font-size: 13px; }
.regex-group-item span { color: var(--primary); font-weight: 600; }
.regex-explain { font-size: 13px; color: var(--text-muted); line-height: 1.5; background: var(--input-bg); padding: 12px; border-radius: 8px; border: 1px solid var(--border-color); }
@media (max-width: 768px) { .regex-results-grid { grid-template-columns: 1fr; } }

/* TOOL 24: ADVANCED MARKDOWN TO HTML */
.md-adv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 24px; }
.md-adv-input { height: 450px; resize: none; }
.md-adv-preview { height: 450px; overflow-y: auto; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 24px; }
.md-adv-preview h1, .md-adv-preview h2, .md-adv-preview h3 { margin-top: 24px; margin-bottom: 12px; font-weight: 700; }
.md-adv-preview h1 { font-size: 28px; border-bottom: 1px solid var(--border-color); padding-bottom: 8px; }
.md-adv-preview h2 { font-size: 24px; }
.md-adv-preview h3 { font-size: 20px; }
.md-adv-preview p { margin-bottom: 12px; line-height: 1.7; color: var(--text-main); }
.md-adv-preview ul, .md-adv-preview ol { margin-bottom: 16px; padding-left: 24px; }
.md-adv-preview li { margin-bottom: 6px; }
.md-adv-preview a { color: var(--primary); text-decoration: underline; }
.md-adv-preview blockquote { border-left: 4px solid var(--primary); padding: 8px 16px; margin: 16px 0; background: var(--input-bg); border-radius: 0 8px 8px 0; color: var(--text-muted); }
.md-adv-preview code { font-family: monospace; background: var(--code-bg); padding: 2px 6px; border-radius: 4px; font-size: 14px; }
.md-adv-preview pre { background: #1e1e1e; padding: 16px; border-radius: 8px; overflow-x: auto; margin: 16px 0; border: 1px solid var(--border-color); }
.md-adv-preview pre code { background: none; padding: 0; color: #f8f8f2; font-size: 13px; }
.md-adv-preview table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.md-adv-preview th, .md-adv-preview td { border: 1px solid var(--border-color); padding: 8px 12px; text-align: left; }
.md-adv-preview th { background: var(--input-bg); font-weight: 700; }
.md-adv-preview img { max-width: 100%; border-radius: 8px; }
.md-adv-preview input[type="checkbox"] { margin-right: 8px; accent-color: var(--primary); }
.md-adv-options { display: flex; gap: 24px; margin-bottom: 16px; flex-wrap: wrap; }
.md-adv-options label { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-muted); cursor: pointer; }
@media (max-width: 768px) { .md-adv-grid { grid-template-columns: 1fr; } .md-adv-input, .md-adv-preview { height: 300px; } }


/* TOOL 26: IMAGE CROPPER STYLES */
.crop-container { position: relative; width: 100%; max-width: 600px; margin: 0 auto 20px; background: var(--input-bg); border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden; }
#crop-canvas { display: block; width: 100%; height: auto; cursor: crosshair; touch-action: none; }
.crop-controls { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; align-items: center; margin-bottom: 20px; }
.crop-controls .btn { margin-top: 0; padding: 8px 12px; font-size: 13px; }
.crop-controls .btn.active { background: var(--primary); color: white; border-color: var(--primary); }

/* TOOL 27: IMAGE RESIZER STYLES */
.resize-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.resize-input-group { background: var(--input-bg); padding: 16px; border-radius: 12px; border: 1px solid var(--border-color); margin-bottom: 16px; }
.resize-input-group label { display: block; font-size: 12px; font-weight: 600; color: var(--text-muted); margin-bottom: 5px; }
.resize-input-group input[type="number"] { width: 100%; padding: 10px; border: 1px solid var(--border-color); border-radius: 6px; background: var(--card-bg); color: var(--text-main); margin-bottom: 8px; }
.resize-preview-box { background: var(--input-bg); border: 1px solid var(--border-color); border-radius: 12px; padding: 12px; text-align: center; min-height: 200px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.resize-preview-box img { max-width: 100%; max-height: 300px; border-radius: 6px; object-fit: contain; }

/* TOOL 28: ADVANCED SCREENSHOT TO PDF */
.s2p-preview-container { margin-top: 24px; border: 1px solid var(--border-color); border-radius: 8px; overflow: hidden; background: var(--input-bg); display: none; }
.s2p-preview-container iframe { width: 100%; height: 500px; border: none; }
.s2p-trim-row { display: flex; align-items: center; gap: 12px; margin-top: 8px; }
.s2p-trim-row input[type="range"] { flex: 1; }

/* TOOL 29: ADVANCED CSS GRADIENT GENERATOR */
.grad-adv-grid { display: grid; grid-template-columns: 280px 1fr; gap: 24px; }
.grad-adv-controls { display: flex; flex-direction: column; gap: 16px; }
.grad-layer-item { display: flex; align-items: center; justify-content: space-between; padding: 8px 12px; border-radius: 6px; border: 1px solid var(--border-color); margin-bottom: 8px; cursor: pointer; background: var(--card-bg); transition: all 0.2s; }
.grad-layer-item.active { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1); }
.grad-layer-preview { width: 40px; height: 20px; border-radius: 4px; border: 1px solid var(--border-color); }
.grad-stop-item { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; background: var(--input-bg); padding: 8px; border-radius: 8px; border: 1px solid var(--border-color); }
.grad-stop-item input[type="color"] { width: 32px; height: 32px; border: none; background: none; cursor: pointer; padding: 0; }
.grad-stop-item input[type="range"] { flex: 1; }
.grad-stop-item .grad-alpha { width: 60px; }
.grad-stop-item span { font-size: 11px; color: var(--text-muted); min-width: 30px; text-align: right; }
.grad-del-btn { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 16px; padding: 0 4px; }
.grad-preview-large { height: 300px; border-radius: 12px; border: 1px solid var(--border-color); transition: background 0.3s; }
@media (max-width: 768px) { .grad-adv-grid { grid-template-columns: 1fr; } }

/* TOOL 30: ADVANCED JWT DECODER */
.jwt-warn { background: rgba(245, 158, 11, 0.1); border: 1px solid #f59e0b; color: #f59e0b; padding: 12px; border-radius: 8px; margin-bottom: 16px; font-size: 13px; line-height: 1.5; }
.jwt-stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.jwt-stat-card { background: var(--input-bg); border: 1px solid var(--border-color); padding: 16px; border-radius: 12px; text-align: center; }
.jwt-stat-card h3 { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 4px; }
.jwt-stat-card p { font-size: 11px; color: var(--text-muted); text-transform: uppercase; margin-bottom: 8px; }
.jwt-stat-card .jwt-sub { font-size: 12px; color: var(--text-muted); font-family: monospace; }
.jwt-valid { color: var(--success); }
.jwt-expired { color: var(--danger); }
.jwt-verify-box { background: var(--input-bg); border: 1px solid var(--border-color); padding: 16px; border-radius: 12px; margin-top: 16px; }
.jwt-search-highlight { background: rgba(255, 235, 59, 0.4); border-radius: 2px; padding: 0 2px; }
.jwt-part-label { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.jwt-part-label label { font-size: 12px; font-weight: 600; color: var(--text-muted); }
.jwt-part-label button { font-size: 11px; padding: 2px 8px; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 4px; cursor: pointer; color: var(--primary); }
.jwt-structure { display: flex; gap: 4px; margin-bottom: 16px; word-break: break-all; }
.jwt-structure span { padding: 4px 8px; border-radius: 4px; font-size: 11px; font-family: monospace; flex: 1; }
.jwt-struct-header { background: rgba(79, 70, 229, 0.2); color: #818cf8; }
.jwt-struct-payload { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.jwt-struct-sig { background: rgba(239, 68, 68, 0.2); color: #f87171; }

/* JWT search result */
.jwt-search-result {
    min-height: 18px;
    margin-top: 6px;
    font-size: 12px;
    color: var(--text-muted);
}

.jwt-search-result:empty {
    display: none;
}


/* TOOL 31: ADVANCED IMAGE UPSCALER */
.upscaler-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 20px; }
.upscaler-input-group { background: var(--input-bg); padding: 16px; border-radius: 12px; border: 1px solid var(--border-color); margin-bottom: 16px; }
.upscaler-input-group label { display: block; font-size: 12px; font-weight: 600; color: var(--text-muted); margin-bottom: 5px; }
.upscaler-input-group select, .upscaler-input-group input[type="number"] { width: 100%; padding: 10px; border: 1px solid var(--border-color); border-radius: 6px; background: var(--card-bg); color: var(--text-main); margin-bottom: 8px; }
.upscaler-input-group .checkbox-grid { grid-template-columns: 1fr; margin-top: 8px; }

/* TOOL 21 INTERNAL STYLES */
#docx2pdf-preview { font-family: Arial, sans-serif; }
#docx2pdf-preview .docx2pdf-page { width: 210mm; min-height: 297mm; margin: 0 auto 25px; background:#fff; color:#111; box-sizing:border-box; padding:20mm; box-shadow:0 3px 14px rgba(0,0,0,.12); }
#docx2pdf-preview .docx2pdf-document { width:100%; }
#docx2pdf-preview h1, #docx2pdf-preview h2, #docx2pdf-preview h3, #docx2pdf-preview h4, #docx2pdf-preview h5, #docx2pdf-preview h6 { color:#111; page-break-after:avoid; break-after:avoid; }
#docx2pdf-preview h1 { font-size:24pt; margin:0 0 18px; }
#docx2pdf-preview h2 { font-size:19pt; margin:22px 0 10px; }
#docx2pdf-preview h3 { font-size:16pt; margin:18px 0 9px; }
#docx2pdf-preview h4 { font-size:14pt; margin:16px 0 8px; }
#docx2pdf-preview h5, #docx2pdf-preview h6 { font-size:12pt; margin:14px 0 7px; }
#docx2pdf-preview p { margin:0 0 10px; line-height:1.15; }
#docx2pdf-preview ul, #docx2pdf-preview ol { margin:7px 0 12px 25px; padding-left:20px; }
#docx2pdf-preview li { margin:3px 0; padding-left:3px; }
#docx2pdf-preview table { width:100%; border-collapse:collapse; margin:14px 0; page-break-inside:auto; }
#docx2pdf-preview tr { page-break-inside:avoid; page-break-after:auto; }
#docx2pdf-preview td, #docx2pdf-preview th { border:1px solid #999; padding:6px 8px; vertical-align:top; }
#docx2pdf-preview img { max-width:100%; height:auto; }
#docx2pdf-preview blockquote { margin:12px 0; padding-left:15px; border-left:3px solid #999; }
#docx2pdf-preview .smart-heading { page-break-after:avoid; break-after:avoid; }
#docx2pdf-preview .smart-section { margin-top:16px; }
#docx2pdf-preview .smart-list { margin-top:4px; margin-bottom:12px; }
#docx2pdf-preview .smart-paragraph { margin-bottom:10px; }
#docx2pdf-preview .smart-spacer { height:5px; }
#docx2pdf-preview mark { background:transparent; }
@media(max-width:800px) {
    #docx2pdf-preview { padding:15px !important; }
    #docx2pdf-preview .docx2pdf-page { width:100%; min-height:auto; padding:20px; }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 32px; }
    .hero p { font-size: 16px; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .container { padding: 32px 16px; }
    .tool-container { padding: 24px 16px; }
    .data-grid, .color-grid { grid-template-columns: 1fr; }
    .conv-grid { grid-template-columns: 1fr; }
    .swap-btn { margin: 0 auto; transform: rotate(90deg); }
    .qr-grid { grid-template-columns: 1fr; }
    .pdf-settings-grid { grid-template-columns: 1fr; }
}