/* TamingShare — global stylesheet
   Tokens, layout, components for create / view / result / burn / privacy / 404.
   Light + dark themes; teal accent (OKLCH ~160°). */

:root {
    color-scheme: light dark;

    --bg:              oklch(98.5% 0.004 150);
    --surface:         oklch(100%  0     0);
    --surface-muted:   oklch(97%   0.005 155);
    --fg:              oklch(18%   0.015 160);
    --muted:           oklch(50%   0.012 160);
    --border:          oklch(91%   0.006 155);

    --accent:          oklch(48%   0.14  160);
    --accent-hover:    oklch(42%   0.14  160);
    --accent-subtle:   oklch(95.5% 0.025 155);
    --on-accent:       #fff;

    --success:         oklch(48%   0.14  160);
    --success-subtle:  oklch(95.5% 0.025 155);

    --danger:          oklch(58%   0.18  25);
    --danger-subtle:   oklch(95%   0.025 25);
    --danger-border:   oklch(88%   0.04  25);
    --danger-text:     oklch(40%   0.12  25);

    --warning:         oklch(62%   0.16  70);
    --warning-subtle:  oklch(95.5% 0.035 75);
    --warning-border:  oklch(82%   0.06  75);
    --warning-icon-bg: oklch(88%   0.06  75);
    --warning-text:    oklch(38%   0.08  70);
    --warning-text-strong: oklch(50% 0.14 70);

    --footer-text:     oklch(68%   0.01  160);

    --radius:          10px;
    --radius-lg:       16px;

    --shadow-card:     0 1px 3px rgba(0, 0, 0, 0.06), 0 0 0 1px var(--border);

    --focus-ring:      0 0 0 3px oklch(48% 0.14 160 / 0.20);

    --font-display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', system-ui, sans-serif;
    --font-body:    -apple-system, BlinkMacSystemFont, 'SF Pro Text',    system-ui, sans-serif;
    --font-mono:    'SF Mono', ui-monospace, Menlo, 'Cascadia Code', monospace;
}

/* Dark theme — applied when the user opts in (theme.js sets data-theme="dark")
   OR when the OS prefers dark and the user has not opted into light. */
:root[data-theme="dark"] {
    --bg:              oklch(14%   0.008 160);
    --surface:         oklch(20%   0.010 160);
    --surface-muted:   oklch(24%   0.012 160);
    --fg:              oklch(95%   0.005 160);
    --muted:           oklch(68%   0.012 160);
    --border:          oklch(30%   0.012 160);

    --accent:          oklch(70%   0.13  160);
    --accent-hover:    oklch(78%   0.13  160);
    --accent-subtle:   oklch(28%   0.05  160);
    --on-accent:       oklch(14%   0.01  160);

    --success:         oklch(70%   0.13  160);
    --success-subtle:  oklch(28%   0.05  160);

    --danger:          oklch(72%   0.16  25);
    --danger-subtle:   oklch(28%   0.06  25);
    --danger-border:   oklch(40%   0.10  25);
    --danger-text:     oklch(85%   0.10  25);

    --warning:         oklch(78%   0.15  75);
    --warning-subtle:  oklch(28%   0.08  75);
    --warning-border:  oklch(42%   0.12  75);
    --warning-icon-bg: oklch(36%   0.10  75);
    --warning-text:    oklch(88%   0.08  75);
    --warning-text-strong: oklch(82% 0.14 75);

    --footer-text:     oklch(58%   0.01  160);

    --shadow-card:     0 1px 3px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border);
    --focus-ring:      0 0 0 3px oklch(70% 0.13 160 / 0.30);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg:              oklch(14%   0.008 160);
        --surface:         oklch(20%   0.010 160);
        --surface-muted:   oklch(24%   0.012 160);
        --fg:              oklch(95%   0.005 160);
        --muted:           oklch(68%   0.012 160);
        --border:          oklch(30%   0.012 160);

        --accent:          oklch(70%   0.13  160);
        --accent-hover:    oklch(78%   0.13  160);
        --accent-subtle:   oklch(28%   0.05  160);
        --on-accent:       oklch(14%   0.01  160);

        --success:         oklch(70%   0.13  160);
        --success-subtle:  oklch(28%   0.05  160);

        --danger:          oklch(72%   0.16  25);
        --danger-subtle:   oklch(28%   0.06  25);
        --danger-border:   oklch(40%   0.10  25);
        --danger-text:     oklch(85%   0.10  25);

        --warning:         oklch(78%   0.15  75);
        --warning-subtle:  oklch(28%   0.08  75);
        --warning-border:  oklch(42%   0.12  75);
        --warning-icon-bg: oklch(36%   0.10  75);
        --warning-text:    oklch(88%   0.08  75);
        --warning-text-strong: oklch(82% 0.14 75);

        --footer-text:     oklch(58%   0.01  160);

        --shadow-card:     0 1px 3px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border);
        --focus-ring:      0 0 0 3px oklch(70% 0.13 160 / 0.30);
    }
}

/* ── Reset / base ───────────────────────────────────────────── */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { height: 100%; }
body {
    min-height: 100%;
    background: var(--bg);
    color: var(--fg);
    font: 15px/1.6 var(--font-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
}

/* ── Page wrapper ───────────────────────────────────────────── */
.page {
    flex: 1;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 48px 24px 40px;
    position: relative;
}
.page--center { justify-content: center; text-align: center; }

/* ── Brand header ───────────────────────────────────────────── */
.brand { text-align: center; margin-bottom: 40px; }
.brand-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}
.brand-icon svg { width: 24px; height: 24px; color: var(--on-accent); }
.brand-icon--warning { background: var(--warning); }
.brand-icon--lg { width: 56px; height: 56px; border-radius: 14px; margin-bottom: 28px; }
.brand-icon--lg svg { width: 28px; height: 28px; }
.brand h1 {
    font: 600 26px/1.2 var(--font-display);
    letter-spacing: -0.03em;
    color: var(--fg);
}
.brand p {
    font-size: 15px;
    color: var(--muted);
    margin-top: 6px;
    letter-spacing: -0.01em;
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
    width: 100%;
    max-width: 600px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.card--narrow { max-width: 560px; }
.card-body { padding: 24px; }
.card-body--snug { padding: 28px 24px; }

/* ── Generic field label ────────────────────────────────────── */
.field-group { margin-bottom: 20px; }
.field-label {
    display: block;
    font: 500 13px/1 var(--font-body);
    color: var(--muted);
    letter-spacing: 0.02em;
    margin-bottom: 8px;
}

/* ── Textarea (compose) ─────────────────────────────────────── */
.paste-area {
    width: 100%;
    min-height: 180px;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--fg);
    font: 14px/1.65 var(--font-mono);
    resize: vertical;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.paste-area::placeholder { color: oklch(70% 0.01 160); }
.paste-area:focus {
    border-color: var(--accent);
    box-shadow: var(--focus-ring);
}
.paste-area--error {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px oklch(58% 0.18 25 / 0.18);
}

/* ── Options toolbar (compose) ──────────────────────────────── */
.options-row {
    display: flex;
    align-items: center;
    gap: 0;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
}
.option label {
    font: 500 13px/1 var(--font-body);
    color: var(--muted);
    letter-spacing: 0.01em;
    cursor: pointer;
    white-space: nowrap;
}
.option select {
    height: 32px;
    padding: 0 28px 0 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface) url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236b7280' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 10px center;
    font: 13px/1 var(--font-body);
    color: var(--fg);
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}
.option select:focus {
    border-color: var(--accent);
    box-shadow: var(--focus-ring);
}

.opt-divider {
    width: 1px;
    align-self: stretch;
    background: var(--border);
    flex-shrink: 0;
}

/* Toggle switch */
.checkbox-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    cursor: pointer;
    user-select: none;
}
.checkbox-wrap input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}
.toggle-track {
    width: 40px;
    height: 24px;
    background: var(--border);
    border-radius: 12px;
    position: relative;
    flex-shrink: 0;
    transition: background 0.2s;
}
.toggle-track::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s;
}
.checkbox-wrap input:checked ~ .toggle-track {
    background: var(--accent);
}
.checkbox-wrap input:checked ~ .toggle-track::after {
    transform: translateX(16px);
}
.checkbox-wrap input:focus-visible ~ .toggle-track {
    box-shadow: var(--focus-ring);
}
.toggle-label {
    font: 500 13px/1 var(--font-body);
    color: var(--muted);
    letter-spacing: 0.01em;
}

/* Encryption badge */
.enc-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    padding: 10px 14px;
    font: 500 12px/1 var(--font-mono);
    letter-spacing: 0.03em;
    color: var(--success);
}
.enc-badge svg { width: 13px; height: 13px; flex-shrink: 0; }

/* ── Buttons ────────────────────────────────────────────────── */
.btn-primary {
    height: 48px;
    padding: 0 20px;
    border: 0;
    border-radius: var(--radius);
    background: var(--accent);
    color: var(--on-accent);
    font: 600 15px/1 var(--font-body);
    letter-spacing: -0.01em;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    text-decoration: none;
    white-space: nowrap;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { transform: scale(0.985); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-primary svg { width: 16px; height: 16px; }
.btn-primary.copied { background: var(--success); }

.btn-primary--inline {
    width: auto;
    padding: 0 20px;
    height: 44px;
    font-size: 14px;
}

.btn-secondary {
    height: 44px;
    padding: 0 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--fg);
    font: 500 14px/1 var(--font-body);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    text-decoration: none;
}
.btn-secondary:hover {
    background: var(--bg);
    border-color: oklch(82% 0.008 155);
}
:root[data-theme="dark"] .btn-secondary:hover,
:root:not([data-theme="light"]):where([data-theme="dark"], :root) .btn-secondary:hover {
    border-color: oklch(40% 0.012 160);
}
.btn-secondary svg { width: 16px; height: 16px; color: var(--muted); }

/* Subtle "create another" link button */
.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 0;
    background: none;
    color: var(--accent);
    font: 500 14px/1 var(--font-body);
    cursor: pointer;
    padding: 0;
    text-decoration: none;
}
.btn-link:hover { text-decoration: underline; }
.btn-link svg { width: 14px; height: 14px; }

/* ── CTA area within card ───────────────────────────────────── */
.cta-area { padding: 0 24px 24px; }

/* ── Action stacks / grids ──────────────────────────────────── */
.actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}
.actions-stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}
.btn-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

/* ── Success header (result page) ───────────────────────────── */
.success-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}
.success-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--success-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.success-icon svg { width: 20px; height: 20px; color: var(--success); }
.success-header h2 {
    font: 600 20px/1.25 var(--font-display);
    letter-spacing: -0.02em;
    color: var(--fg);
}
.success-header p {
    font: 13px/1.4 var(--font-body);
    color: var(--muted);
    margin-top: 2px;
}

/* ── Security / info note (result) ──────────────────────────── */
.security-note {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}
.security-note svg {
    width: 16px;
    height: 16px;
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 2px;
}
.security-note p {
    font: 13px/1.5 var(--font-body);
    color: var(--muted);
}

/* ── URL display (result) ───────────────────────────────────── */
.url-group {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}
.url-input {
    flex: 1;
    min-width: 0;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    font: 13px/1.5 var(--font-mono);
    color: var(--fg);
    outline: none;
    word-break: break-all;
    overflow-wrap: anywhere;
    white-space: normal;
    user-select: all;
    -webkit-user-select: all;
}
.url-input:focus {
    border-color: var(--accent);
    box-shadow: var(--focus-ring);
}

/* ── Paste view ─────────────────────────────────────────────── */
.paste-meta-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.meta-tag {
    display: flex;
    align-items: center;
    gap: 5px;
    font: 12px/1 var(--font-mono);
    color: var(--muted);
    letter-spacing: 0.02em;
}
.meta-tag svg { width: 13px; height: 13px; color: var(--muted); }

.paste-content {
    width: 100%;
    min-height: 120px;
    max-height: 45vh;
    overflow: auto;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    font: 14px/1.65 var(--font-mono);
    color: var(--fg);
    white-space: pre-wrap;
    word-break: break-word;
    outline: none;
    overscroll-behavior: contain;
}

/* ── Paste metadata (result) ────────────────────────────────── */
.paste-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}
.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}
.meta-item svg { width: 14px; height: 14px; color: var(--muted); }
.meta-item span { font: 13px/1 var(--font-body); color: var(--muted); }
.meta-item strong { color: var(--fg); font-weight: 600; }
.meta-burn { color: var(--warning) !important; }
.meta-burn svg { color: var(--warning) !important; }

/* ── Burn notice (view) ─────────────────────────────────────── */
.burn-notice {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--danger-subtle);
    border: 1px solid var(--danger-border);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 20px;
}
.burn-notice svg {
    width: 16px;
    height: 16px;
    color: var(--danger);
    flex-shrink: 0;
}
.burn-notice p {
    font: 13px/1.5 var(--font-body);
    color: var(--danger-text);
}

/* ── Burn warning banner (burn_warning) ─────────────────────── */
.warning-banner {
    background: var(--warning-subtle);
    border: 1px solid var(--warning-border);
    border-radius: var(--radius);
    padding: 18px;
    margin-bottom: 24px;
}
.warning-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.warning-icon {
    width: 28px;
    height: 28px;
    border-radius: 7px;
    background: var(--warning-icon-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.warning-icon svg { width: 16px; height: 16px; color: var(--warning-text-strong); }
.warning-header strong {
    font: 600 14px/1.3 var(--font-body);
    color: var(--warning-text-strong);
}
.warning-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.warning-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font: 13.5px/1.5 var(--font-body);
    color: var(--warning-text);
}
.warning-list li::before {
    content: '';
    display: block;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--warning-text-strong);
    margin-top: 8px;
    flex-shrink: 0;
}

/* ── Privacy & FAQ ──────────────────────────────────────────── */
.content {
    width: 100%;
    max-width: 640px;
}
.section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
}
.privacy-item {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}
.privacy-item:last-child { border-bottom: 0; }
.privacy-item h3 {
    font: 600 15px/1.3 var(--font-body);
    color: var(--fg);
    margin-bottom: 8px;
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.privacy-item h3 .num {
    font: 700 12px/1 var(--font-mono);
    color: var(--accent);
    background: var(--accent-subtle);
    padding: 3px 7px;
    border-radius: 5px;
    letter-spacing: 0.02em;
    flex-shrink: 0;
}
.privacy-item p {
    font: 14px/1.65 var(--font-body);
    color: var(--muted);
    margin-bottom: 8px;
}
.privacy-item p:last-child { margin-bottom: 0; }
.privacy-item strong { color: var(--fg); font-weight: 600; }
.privacy-item code,
.faq-answer-inner code {
    font: 13px/1 var(--font-mono);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 2px 6px;
    color: var(--fg);
    word-break: break-all;
}

.faq-divider {
    text-align: center;
    margin: 28px 0 16px;
}
.faq-divider h2 {
    font: 600 20px/1.3 var(--font-display);
    letter-spacing: -0.02em;
    color: var(--fg);
}
.faq-divider p {
    font: 14px/1.5 var(--font-body);
    color: var(--muted);
    margin-top: 4px;
}

.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: 10px;
    overflow: hidden;
}
.faq-question {
    width: 100%;
    padding: 18px 24px;
    border: 0;
    background: none;
    text-align: left;
    font: 600 15px/1.4 var(--font-body);
    color: var(--fg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    transition: background 0.15s;
}
.faq-question:hover { background: var(--surface-muted); }
.faq-chevron {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--muted);
    transition: transform 0.2s;
}
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease-out;
}
.faq-item.open .faq-answer { max-height: 800px; }
.faq-answer-inner { padding: 0 24px 18px; }
.faq-answer-inner p {
    font: 14px/1.65 var(--font-body);
    color: var(--muted);
    margin-bottom: 8px;
}
.faq-answer-inner p:last-child { margin-bottom: 0; }
.faq-answer-inner strong { color: var(--fg); font-weight: 600; }
.faq-answer-inner ul {
    list-style: none;
    padding: 0;
    margin-bottom: 8px;
}
.faq-answer-inner li {
    position: relative;
    padding-left: 16px;
    font: 14px/1.6 var(--font-body);
    color: var(--muted);
    margin-bottom: 6px;
}
.faq-answer-inner li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.65em;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
}
.faq-answer-inner li:last-child { margin-bottom: 0; }

.back-area {
    width: 100%;
    max-width: 640px;
    margin-top: 24px;
}

/* ── 404 ────────────────────────────────────────────────────── */
.error-code {
    font: 700 72px/1 var(--font-display);
    letter-spacing: -0.04em;
    color: var(--fg);
    margin-bottom: 8px;
}
.error-title {
    font: 600 22px/1.3 var(--font-display);
    letter-spacing: -0.02em;
    color: var(--fg);
    margin-bottom: 8px;
}
.error-subtitle {
    font: 15px/1.5 var(--font-body);
    color: var(--muted);
    margin-bottom: 24px;
}
.error-explain {
    max-width: 480px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin-bottom: 28px;
    text-align: left;
}
.error-explain p {
    font: 14px/1.6 var(--font-body);
    color: var(--muted);
}
.btn-primary--auto {
    width: auto;
    padding: 0 32px;
}

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
    width: 100%;
    max-width: 640px;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}
.site-footer .version {
    font: 12px/1 var(--font-mono);
    color: var(--footer-text);
    letter-spacing: 0.03em;
}
.site-footer a {
    font: 12px/1 var(--font-body);
    color: var(--muted);
    text-decoration: none;
}
.site-footer a:hover { color: var(--accent); }
.footer-links { display: flex; gap: 16px; }

/* ── Theme toggle (fixed top-right) ─────────────────────────── */
.theme-toggle {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 100;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--fg);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    line-height: 1;
    padding: 0;
    transition: background-color 0.2s, transform 0.2s;
}
.theme-toggle:hover { background: var(--surface-muted); }
/* Show the icon for the theme the user will switch TO, not the one they're in. */
.theme-toggle__icon--sun  { display: none; }
.theme-toggle__icon--moon { display: inline; }
:root[data-theme="dark"] .theme-toggle__icon--moon { display: none; }
:root[data-theme="dark"] .theme-toggle__icon--sun  { display: inline; }
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-toggle__icon--moon { display: none; }
    :root:not([data-theme="light"]) .theme-toggle__icon--sun  { display: inline; }
}

/* ── Skip link / a11y ───────────────────────────────────────── */
.skip-link {
    position: absolute;
    left: -10000px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    background: var(--surface);
    color: var(--fg);
    padding: 8px 12px;
    border-radius: 6px;
    z-index: 1001;
}
.skip-link:focus,
.skip-link:focus-visible {
    left: 16px;
    top: 16px;
    width: auto;
    height: auto;
    outline: none;
    box-shadow: var(--focus-ring);
}
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* ── Inline status messages (create form) ───────────────────── */
.error,
.success {
    padding: 12px 14px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font: 13px/1.5 var(--font-body);
    display: none;
    text-align: left;
}
.error {
    background: var(--danger-subtle);
    color: var(--danger-text);
    border: 1px solid var(--danger-border);
}
.success {
    background: var(--success-subtle);
    color: var(--success);
    border: 1px solid var(--border);
}
.loading-text {
    margin-top: 12px;
    margin-bottom: 0;
    font: 13px/1 var(--font-body);
    color: var(--muted);
    display: none;
    text-align: center;
}

/* ── Universal focus ring ───────────────────────────────────── */
a:focus-visible,
button:focus-visible,
select:focus-visible,
textarea:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
    border-radius: var(--radius);
}

/* ── Spinner ────────────────────────────────────────────────── */
.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
    vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Fade-in ────────────────────────────────────────────────── */
.fade-in { animation: fadeIn 0.3s ease-out; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 640px) {
    .page { padding: 32px 16px 36px; }
    .brand { margin-bottom: 24px; }
    .brand-icon { width: 44px; height: 44px; border-radius: 11px; margin-bottom: 14px; }
    .brand-icon svg { width: 22px; height: 22px; }
    .brand h1 { font-size: 24px; }
    .brand p { font-size: 14px; }

    .card,
    .section,
    .faq-item {
        border-radius: 14px;
        border: none;
        box-shadow: var(--shadow-card);
    }
    .card-body { padding: 20px; }
    .card-body--snug { padding: 22px 20px; }
    .cta-area { padding: 0 20px 20px; }

    .paste-area { min-height: 160px; font-size: 14px; padding: 14px; border-radius: 10px; }

    .options-row {
        flex-direction: column;
        align-items: stretch;
        border-radius: 10px;
        padding: 0;
    }
    .opt-divider { display: none; }
    .option { width: 100%; justify-content: space-between; padding: 13px 14px; }
    .option label { font-size: 14px; color: var(--fg); }
    .option select { height: 36px; font-size: 14px; border-radius: 8px; }
    .checkbox-wrap {
        padding: 13px 14px;
        border-top: 1px solid var(--border);
        justify-content: space-between;
    }
    .toggle-label { font-size: 14px; color: var(--fg); flex: 1; }
    .enc-badge {
        border-top: 1px solid var(--border);
        margin-left: 0;
        justify-content: center;
        padding: 10px 14px;
        font-size: 12px;
    }

    .btn-primary { height: 52px; font-size: 16px; border-radius: 12px; }
    .btn-primary--inline { height: 48px; font-size: 15px; }
    .btn-secondary { height: 48px; font-size: 15px; border-radius: 10px; }
    .btn-row { grid-template-columns: 1fr; }

    .url-group { flex-direction: column; align-items: stretch; gap: 10px; }
    .url-input { font-size: 12px; border-radius: 10px; padding: 12px 14px; }

    .paste-content { font-size: 13px; min-height: 100px; padding: 14px; }
    .paste-meta-bar { gap: 10px; }
    .paste-meta { gap: 10px; }

    .success-header { gap: 10px; margin-bottom: 16px; padding-bottom: 16px; }
    .success-header h2 { font-size: 18px; }

    .privacy-item { padding: 16px 18px; }
    .privacy-item h3 { font-size: 14px; }
    .faq-question { padding: 16px 18px; font-size: 14px; }
    .faq-answer-inner { padding: 0 18px 16px; }

    .error-code { font-size: 56px; }
    .error-title { font-size: 20px; }
    .error-subtitle { font-size: 14px; }
    .error-explain { padding: 16px 18px; border-radius: 14px; }
    .error-explain p { font-size: 13.5px; }
    .btn-primary--auto { width: 100%; padding: 0; }

    .site-footer {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 10px;
        margin-top: 24px;
    }
}

@media (max-width: 380px) {
    .page { padding: 24px 12px 32px; }
    .brand h1 { font-size: 22px; }
    .card-body { padding: 16px; }
    .cta-area { padding: 0 16px 16px; }
    .paste-area { min-height: 140px; font-size: 13px; }
    .error-code { font-size: 48px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition: none !important;
        animation: none !important;
    }
}