/* QuickTools — global styles */

:root {
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #0f172a;
    --color-muted: #64748b;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: #eff6ff;
    --color-success: #16a34a;
    --color-error: #dc2626;
    --color-on-primary: #ffffff;
    --alert-error-bg: #fef2f2;
    --alert-error-border: #fecaca;
    --alert-success-bg: #f0fdf4;
    --alert-success-border: #bbf7d0;
    --alert-info-border: #bfdbfe;
    --diff-added-bg: #f0fdf4;
    --diff-removed-bg: #fef2f2;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 4px 12px rgba(15, 23, 42, 0.04);
    --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --max-width: 1100px;
}

[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-border: #334155;
    --color-text: #f1f5f9;
    --color-muted: #94a3b8;
    --color-primary: #3b82f6;
    --color-primary-hover: #60a5fa;
    --color-primary-light: #1e3a5f;
    --color-success: #4ade80;
    --color-error: #f87171;
    --color-on-primary: #ffffff;
    --alert-error-bg: #450a0a;
    --alert-error-border: #7f1d1d;
    --alert-success-bg: #052e16;
    --alert-success-border: #14532d;
    --alert-info-border: #1e3a8a;
    --diff-added-bg: #052e16;
    --diff-removed-bg: #450a0a;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.35), 0 4px 12px rgba(0, 0, 0, 0.25);
}

html {
    color-scheme: light dark;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.25rem;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 1rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-shrink: 0;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: var(--color-bg);
    color: var(--color-text);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.theme-toggle:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.theme-icon {
    display: block;
}

.theme-toggle .theme-icon-sun {
    display: none;
}

.theme-toggle.is-dark .theme-icon-moon {
    display: none;
}

.theme-toggle.is-dark .theme-icon-sun {
    display: block;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text);
    text-decoration: none;
}

.logo:hover { text-decoration: none; }

.logo-icon { font-size: 1.5rem; }

.logo-text small {
    font-weight: 500;
    color: var(--color-muted);
    font-size: 0.85em;
}

.main-nav {
    display: flex;
    gap: 1.5rem;
}

.main-nav a {
    color: var(--color-muted);
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
}

.main-nav a:hover { color: var(--color-primary); }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
}

/* Main */
.site-main { flex: 1; }

/* Hero */
.hero {
    padding: 3.5rem 0 2.5rem;
    text-align: center;
}

.hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    line-height: 1.2;
    margin: 0 0 1rem;
}

.hero p {
    font-size: 1.125rem;
    color: var(--color-muted);
    max-width: 560px;
    margin: 0 auto 2rem;
}

.hero-count {
    font-size: 0.95rem !important;
    font-weight: 600;
    color: var(--color-primary) !important;
    margin: -1rem auto 1.25rem !important;
}

.tool-search-wrap {
    max-width: 520px;
    margin: 0 auto;
}

.tool-search-bar {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.35rem 0.35rem 1rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.35);
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.95) 0%,
        rgba(248, 250, 252, 0.88) 100%
    );
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.9) inset,
        0 4px 16px rgba(37, 99, 235, 0.08);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.tool-search-bar::before {
    content: "";
    position: absolute;
    inset: 1px 1px auto 1px;
    height: 45%;
    border-radius: 999px 999px 0 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.7), transparent);
    pointer-events: none;
    z-index: 0;
}

.tool-search-bar:focus-within {
    border-color: rgba(37, 99, 235, 0.5);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.9) inset,
        0 0 0 3px rgba(37, 99, 235, 0.12),
        0 6px 20px rgba(37, 99, 235, 0.12);
}

[data-theme="dark"] .tool-search-bar {
    border-color: rgba(148, 163, 184, 0.25);
    background: linear-gradient(
        180deg,
        rgba(51, 65, 85, 0.9) 0%,
        rgba(30, 41, 59, 0.85) 100%
    );
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.06) inset,
        0 4px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .tool-search-bar::before {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent);
}

[data-theme="dark"] .tool-search-bar:focus-within {
    border-color: rgba(96, 165, 250, 0.5);
    box-shadow:
        0 0 0 3px rgba(59, 130, 246, 0.18),
        0 6px 24px rgba(37, 99, 235, 0.2);
}

.tool-search-icon {
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    font-size: 1rem;
    line-height: 1;
    pointer-events: none;
    opacity: 0.5;
}

.tool-search-input,
.tool-search-input:focus,
.tool-search-input:focus-visible {
    position: relative;
    z-index: 1;
    flex: 1;
    width: auto;
    min-width: 0;
    padding: 0.65rem 3.25rem 0.65rem 0;
    margin: 0;
    border: none !important;
    border-radius: 0 !important;
    outline: none !important;
    box-shadow: none !important;
    font-size: 1rem;
    font-family: inherit;
    color: var(--color-text);
    background: transparent !important;
    caret-color: var(--color-primary);
    -webkit-appearance: none;
    appearance: none;
}

.tool-search-input::placeholder {
    color: var(--color-muted);
    opacity: 1;
}

.tool-search-input:-webkit-autofill,
.tool-search-input:-webkit-autofill:hover,
.tool-search-input:-webkit-autofill:focus {
    -webkit-text-fill-color: var(--color-text);
    -webkit-box-shadow: 0 0 0 1000px transparent inset;
    box-shadow: 0 0 0 1000px transparent inset;
    transition: background-color 9999s ease-out 0s;
}

.tool-search-input::-webkit-search-cancel-button,
.tool-search-input::-webkit-search-decoration {
    -webkit-appearance: none;
    appearance: none;
    display: none;
}

.tool-search-bar.has-clear .tool-search-input {
    padding-right: 5rem;
}

.tool-search-actions {
    position: absolute;
    right: 0.35rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 0.15rem;
    z-index: 2;
}

.tool-search-voice {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--color-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    padding: 0;
    transition: background 0.15s, color 0.15s;
}

.tool-search-voice svg {
    display: block;
    flex-shrink: 0;
}

.tool-search-voice:hover:not(:disabled) {
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
}

.tool-search-voice.is-listening {
    background: rgba(37, 99, 235, 0.15);
    color: var(--color-primary);
    animation: voice-pulse 1.2s ease infinite;
}

.tool-search-clear {
    width: 26px;
    height: 26px;
    border: none;
    border-radius: 50%;
    background: rgba(148, 163, 184, 0.2);
    color: var(--color-muted);
    font-size: 1.15rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    padding: 0;
}

.tool-search-clear.hidden {
    width: 0;
    min-width: 0;
    padding: 0;
    margin: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
}

.tool-search-clear:hover {
    background: rgba(148, 163, 184, 0.35);
    color: var(--color-text);
}

.tool-search-voice:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 1px;
}

.tool-search-voice:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

@keyframes voice-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

.tool-search-voice-status {
    min-height: 1.35rem;
    margin: 0.5rem 0 0;
    padding: 0 0.5rem;
    font-size: 0.85rem;
    color: var(--color-primary);
    text-align: center;
    line-height: 1.35;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tool-search-empty {
    text-align: center;
    padding: 2rem 1rem 3rem;
    color: var(--color-muted);
    font-size: 1.05rem;
}

.tool-search-empty em {
    color: var(--color-primary);
    font-style: normal;
    font-weight: 600;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.tool-category.hidden {
    display: none;
}

.tool-card.hidden {
    display: none;
}

.tool-category {
    margin-bottom: 2.5rem;
}

.tool-category .section-title {
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-border);
}

.hero-badge {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    margin-bottom: 1rem;
}

/* Tool grid */
.section-title {
    font-size: 1.5rem;
    margin: 0 0 1.5rem;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
    padding-bottom: 3rem;
}

.tool-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.1);
    border-color: var(--color-primary);
    text-decoration: none;
}

.tool-card-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.tool-card h3 {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
}

.tool-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--color-muted);
}

/* Tool page */
.tool-page {
    padding: 2rem 0 3rem;
}

.tool-page-header {
    margin-bottom: 2rem;
}

.tool-page-header h1 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin: 0 0 0.5rem;
}

.tool-page-header p {
    color: var(--color-muted);
    margin: 0;
}

.tool-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

/* Forms & inputs */
label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

input[type="text"]:not(.tool-search-input),
input[type="search"]:not(.tool-search-input),
input[type="email"],
input[type="number"],
input[type="range"],
textarea,
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--color-text);
    background-color: var(--color-bg);
    caret-color: var(--color-primary);
}

input[type="text"]::placeholder,
input[type="search"]:not(.tool-search-input)::placeholder,
input[type="email"]::placeholder,
textarea::placeholder {
    color: var(--color-muted);
    opacity: 1;
}

textarea {
    min-height: 160px;
    resize: vertical;
    font-family: ui-monospace, "Cascadia Code", monospace;
    font-size: 0.9rem;
}

input:focus:not(.tool-search-input),
textarea:focus,
select:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 0;
    border-color: var(--color-primary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-on-primary);
}

.btn-primary:hover { background: var(--color-primary-hover); }

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover { background: var(--color-border); }

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

/* Drop zone */
.drop-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.drop-zone p { margin: 0; color: var(--color-muted); }
.drop-zone strong { color: var(--color-text); }

/* Stats row */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.stat-box {
    background: var(--color-bg);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
}

.stat-box .value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-box .label {
    font-size: 0.8rem;
    color: var(--color-muted);
    margin-top: 0.25rem;
}

/* Messages */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    margin-top: 1rem;
}

.alert-error {
    background: var(--alert-error-bg);
    color: var(--color-error);
    border: 1px solid var(--alert-error-border);
}

.alert-success {
    background: var(--alert-success-bg);
    color: var(--color-success);
    border: 1px solid var(--alert-success-border);
}

.alert-info {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border: 1px solid var(--alert-info-border);
}

.hidden { display: none !important; }

/* Preview */
.preview-area {
    margin-top: 1.5rem;
    text-align: center;
}

.preview-area img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

#qrcode canvas, #qrcode img {
    margin: 0 auto;
}

/* Content pages */
.content-page {
    padding: 2rem 0 3rem;
    max-width: 720px;
}

.content-page h1 { margin-top: 0; }
.content-page h2 { margin-top: 2rem; }

/* Ad placeholder */
.ad-slot {
    background: var(--color-bg);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
    color: var(--color-muted);
    font-size: 0.85rem;
    margin: 1.5rem 0;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Footer */
.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    margin-top: auto;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: flex-start;
    justify-content: space-between;
}

.footer-brand p {
    margin: 0.5rem 0 0;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 1.25rem;
}

.footer-links a {
    color: var(--color-muted);
    font-size: 0.9rem;
    text-decoration: none;
}

.footer-links a:hover { color: var(--color-primary); }

.footer-copy {
    width: 100%;
    margin: 0.5rem 0 0;
    font-size: 0.85rem;
    color: var(--color-muted);
}

/* Responsive */
@media (max-width: 640px) {
    .nav-toggle { display: flex; }

    .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 1rem 1.25rem;
        gap: 0.75rem;
    }

    .main-nav.open { display: flex; }

    .header-inner { position: relative; }
}

/* Tool-specific helpers */
.text-muted {
    color: var(--color-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.form-row.three-col {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 640px) {
    .form-row, .form-row.three-col {
        grid-template-columns: 1fr;
    }
}

.checkbox-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
    margin: 1rem 0;
}

.checkbox-row label,
.checkbox-inline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
}

.checkbox-row input,
.checkbox-inline input {
    width: auto;
}

.password-output-wrap {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.password-output-wrap input {
    flex: 1;
    font-family: ui-monospace, monospace;
    font-size: 1.1rem;
}

.btn-icon {
    flex-shrink: 0;
    padding: 0.7rem 1rem;
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
}

.hash-results {
    margin-top: 1.5rem;
}

.hash-row {
    margin-bottom: 1rem;
}

.hash-row label {
    margin-bottom: 0.35rem;
    color: var(--color-muted);
    font-size: 0.85rem;
}

.hash-value-wrap {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}

.hash-value-wrap code {
    flex: 1;
    display: block;
    padding: 0.6rem 0.75rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.8rem;
    word-break: break-all;
}

.uuid-output {
    margin: 1rem 0;
    padding: 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: ui-monospace, monospace;
    font-size: 0.95rem;
}

.uuid-line {
    padding: 0.35rem 0;
}

.color-preview-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.color-preview {
    width: 80px;
    height: 80px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    flex-shrink: 0;
}

#color-picker {
    width: 60px;
    height: 60px;
    padding: 0;
    border: none;
    cursor: pointer;
    background: none;
}

/* Tool-specific: diff, markdown, frequency, timer, dice, PDF */
.diff-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 768px) {
    .diff-columns {
        grid-template-columns: 1fr;
    }
}

.diff-output {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1rem;
    font-family: ui-monospace, monospace;
    font-size: 0.85rem;
    max-height: 400px;
    overflow: auto;
}

.diff-line {
    padding: 0.15rem 0.5rem;
    white-space: pre-wrap;
    word-break: break-all;
}

.diff-added {
    background: var(--diff-added-bg);
    color: var(--color-success);
}

.diff-removed {
    background: var(--diff-removed-bg);
    color: var(--color-error);
}

.md-preview {
    min-height: 160px;
    padding: 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: auto;
}

.md-preview h1, .md-preview h2, .md-preview h3 {
    margin-top: 0;
}

.freq-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.freq-table th,
.freq-table td {
    padding: 0.6rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.freq-table th {
    background: var(--color-bg);
    font-weight: 600;
}

.freq-table tbody tr:hover {
    background: var(--color-primary-light);
}

.timer-display {
    font-size: 3rem;
    font-weight: 700;
    font-family: ui-monospace, monospace;
    text-align: center;
    padding: 1.5rem;
    margin: 1rem 0;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-primary);
}

.timer-display.timer-done {
    color: var(--color-error);
    animation: timer-pulse 1s ease infinite;
}

@keyframes timer-pulse {
    50% { opacity: 0.6; }
}

.dice-results {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.dice-die {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-surface);
    border: 2px solid var(--color-primary);
    border-radius: 8px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.pdf-file-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
}

.pdf-file-list li {
    padding: 0.5rem 0.75rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.btn-secondary.active {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Media tools — video & audio cutter */
.media-tool-panel .tool-steps {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.tool-step {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-muted);
}

.tool-step strong {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    font-size: 0.75rem;
    font-weight: 700;
}

.tool-step.active {
    color: var(--color-text);
    font-weight: 600;
}

.tool-step.active strong {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.media-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin: 1rem 0;
}

.media-toolbar-spacer {
    flex: 1;
    min-width: 0.5rem;
}

.waveform-wrap {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.75rem;
    overflow: hidden;
}

.waveform-hint {
    margin: 0.5rem 0 0;
    font-size: 0.85rem;
}

.time-range-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.video-preview-wrap {
    margin-top: 1rem;
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
    text-align: center;
}

.video-preview-wrap video {
    max-width: 100%;
    max-height: 420px;
    display: block;
    margin: 0 auto;
}

.timeline-panel {
    margin-top: 1rem;
    position: relative;
}

.timeline-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--color-muted);
    margin-bottom: 0.35rem;
    font-family: ui-monospace, monospace;
}

.dual-range-track {
    position: relative;
    height: 36px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
}

.dual-range-fill {
    position: absolute;
    top: 0;
    bottom: 0;
    background: var(--color-primary-light);
    border-left: 2px solid var(--color-primary);
    border-right: 2px solid var(--color-primary);
    pointer-events: none;
    border-radius: 4px;
}

.dual-range-track input[type="range"] {
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    margin: 0;
    padding: 0;
    height: 36px;
    background: transparent;
    pointer-events: none;
    -webkit-appearance: none;
    appearance: none;
}

.dual-range-track input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 2px solid var(--color-surface);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    pointer-events: auto;
}

.dual-range-track input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 2px solid var(--color-surface);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    pointer-events: auto;
}

.dual-range-track input[type="range"]::-webkit-slider-runnable-track,
.dual-range-track input[type="range"]::-moz-range-track {
    background: transparent;
    height: 36px;
}

.dual-range-track #range-end {
    z-index: 2;
}

.timeline-playhead-wrap {
    position: relative;
    height: 8px;
    margin-top: 4px;
}

.timeline-playhead {
    position: absolute;
    top: 0;
    width: 2px;
    height: 8px;
    background: var(--color-error);
    transform: translateX(-1px);
    pointer-events: none;
}

.progress-wrap {
    margin-top: 1rem;
}

.progress-bar {
    height: 8px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--color-primary);
    transition: width 0.2s ease;
    border-radius: 999px;
}

[data-theme="dark"] .waveform-wrap {
    background: var(--color-bg);
}

[data-theme="dark"] wave {
    filter: none;
}

/* Audio cutter — timeline editor */
.timeline-editor {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border);
}

.timeline-editor-header h3 {
    margin: 0 0 0.25rem;
    font-size: 1rem;
}

.timeline-editor-header p {
    margin: 0 0 0.75rem;
}

.timeline-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.timeline-options {
    margin-bottom: 1rem;
}

.timeline-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.timeline-list:not(:empty) + .timeline-empty {
    display: none;
}

.timeline-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 0.75rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    cursor: grab;
    user-select: none;
}

.timeline-item:active {
    cursor: grabbing;
}

.timeline-item.drag-over {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.timeline-item.is-silence {
    border-style: dashed;
    opacity: 0.9;
}

.timeline-item-handle {
    color: var(--color-muted);
    font-size: 1rem;
    line-height: 1;
    flex-shrink: 0;
}

.timeline-item-body {
    flex: 1;
    min-width: 0;
    font-size: 0.9rem;
}

.timeline-item-body strong {
    display: block;
    font-weight: 600;
}

.timeline-item-body span {
    color: var(--color-muted);
    font-size: 0.8rem;
}

.timeline-item-actions {
    display: flex;
    gap: 0.35rem;
    flex-shrink: 0;
}

.timeline-item-actions .btn-icon {
    padding: 0.25rem 0.5rem;
    min-width: 2rem;
}