:root {
    --bg: #090f1a;
    --bg-elev: #101a2a;
    --bg-soft: #142137;
    --text: #edf3ff;
    --muted: #98abc8;
    --primary: #14b8a6;
    --primary-strong: #0f9d8d;
    --secondary: #f59e0b;
    --danger: #f87171;
    --border: rgba(152, 171, 200, 0.24);
    --shadow: 0 22px 42px rgba(0, 0, 0, 0.38);
    --radius: 18px;
}

:root[data-theme='light'] {
    --bg: #f4f8ff;
    --bg-elev: #ffffff;
    --bg-soft: #eef3ff;
    --text: #122035;
    --muted: #4f637f;
    --primary: #0f766e;
    --primary-strong: #0c5f58;
    --secondary: #b45309;
    --danger: #b91c1c;
    --border: rgba(18, 32, 53, 0.14);
    --shadow: 0 20px 36px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    font-family: "Manrope", "Segoe UI", sans-serif;
    background: radial-gradient(circle at 10% 10%, rgba(20, 184, 166, 0.22), transparent 36%),
        radial-gradient(circle at 90% 0%, rgba(245, 158, 11, 0.2), transparent 42%),
        var(--bg);
    color: var(--text);
    line-height: 1.6;
}

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

a:hover {
    text-decoration: underline;
}

.container {
    width: min(1160px, 92vw);
    margin: 0 auto;
}

.site-header {
    padding: 1.4rem 0 0;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2.4rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.brand-logo {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 18px rgba(0, 0, 0, 0.25);
}

.theme-toggle {
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text);
    border-radius: 999px;
    padding: 0.15rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.theme-toggle:hover {
    transform: translateY(-1px);
}

.theme-toggle:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 42%, transparent);
}

.theme-switch-track {
    width: 58px;
    height: 30px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--bg-elev) 82%, var(--bg-soft));
    border: 1px solid var(--border);
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 8px;
    position: relative;
}

.theme-switch-sun,
.theme-switch-moon {
    color: color-mix(in srgb, var(--text) 75%, var(--muted));
    z-index: 1;
}

.theme-switch-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 24px;
    height: 24px;
    border-radius: 999px;
    background: linear-gradient(150deg, #f8fbff, #dce8ff);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.35);
    transition: transform 220ms ease, background 220ms ease;
}

:root[data-theme='light'] .theme-switch-thumb {
    transform: translateX(28px);
    background: linear-gradient(150deg, #fff0ba, #ffd877);
}

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

.hero {
    display: grid;
    gap: 1.2rem;
    padding-bottom: 1.6rem;
}

.hero h1 {
    margin: 0;
    font-size: clamp(2.1rem, 5vw, 3.5rem);
    line-height: 1.05;
}

.hero p {
    margin: 0;
    color: var(--muted);
    max-width: 68ch;
}

main {
    padding-bottom: 2.5rem;
}

.panel {
    background: color-mix(in srgb, var(--bg-elev) 94%, transparent);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.4rem;
    margin-bottom: 1.4rem;
}

.grid {
    display: grid;
    gap: 1.2rem;
}

.converter-layout {
    display: grid;
    gap: 1.2rem;
}

.converter-column {
    display: grid;
    gap: 1rem;
}

.converter-block {
    border: 1px solid var(--border);
    border-radius: 14px;
    background: color-mix(in srgb, var(--bg-soft) 88%, transparent);
    padding: 1rem;
}

.converter-block h2 {
    margin: 0 0 0.7rem;
    font-size: 1.05rem;
}

.settings-grid {
    display: grid;
    gap: 0.9rem;
    margin-bottom: 0.9rem;
}

.resolution-guide {
    margin-top: 0.85rem;
}

.resolution-guide summary {
    cursor: pointer;
    color: var(--muted);
    font-weight: 700;
    margin-bottom: 0.7rem;
}

.resolution-guide[open] summary {
    color: var(--text);
}

@media (min-width: 900px) {
    .grid-2 {
        grid-template-columns: 1.2fr 1fr;
    }

    .preview-grid {
        grid-template-columns: 1fr 1fr;
    }

    .converter-layout {
        grid-template-columns: 1.35fr 0.95fr;
    }

    .converter-summary {
        align-content: start;
    }
}

@media (min-width: 640px) {
    .settings-grid {
        grid-template-columns: 1fr 1fr;
    }
}

label {
    display: block;
    font-weight: 700;
    margin-bottom: 0.45rem;
}

.field-help {
    color: var(--muted);
    font-size: 0.9rem;
    margin-top: 0.35rem;
}

.resolution-table-wrap {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: color-mix(in srgb, var(--bg-soft) 92%, transparent);
}

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

.resolution-table th,
.resolution-table td {
    padding: 0.65rem 0.7rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
}

.resolution-table th {
    background: color-mix(in srgb, var(--bg-elev) 85%, transparent);
    color: var(--text);
    font-weight: 700;
}

.resolution-table tbody tr:last-child td {
    border-bottom: none;
}

.resolution-table tbody tr td:first-child {
    font-weight: 700;
}

.dropzone {
    border: 2px dashed var(--border);
    background: var(--bg-soft);
    border-radius: 14px;
    min-height: 220px;
    display: grid;
    place-items: center;
    text-align: center;
    padding: 1.2rem;
    cursor: pointer;
    transition: border-color 180ms ease, transform 180ms ease;
}

.dropzone:hover,
.dropzone.dragging {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.dropzone h2 {
    margin: 0;
    font-size: 1.2rem;
}

.dropzone p {
    margin: 0.55rem 0 0;
    color: var(--muted);
}

input[type='file'] {
    display: none;
}

input[type='range'],
input[type='number'],
select {
    width: 100%;
    border: 1px solid var(--border);
    background: var(--bg-soft);
    color: var(--text);
    border-radius: 10px;
    padding: 0.55rem;
}

.resolution-custom-grid {
    display: grid;
    gap: 0.9rem;
}

@media (min-width: 640px) {
    .resolution-custom-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.toggle-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

input[type='checkbox'] {
    width: 1.1rem;
    height: 1.1rem;
}

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.9rem;
}

.btn {
    border: none;
    border-radius: 999px;
    padding: 0.72rem 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 180ms ease, opacity 180ms ease;
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(120deg, var(--primary), var(--primary-strong));
    color: #fff;
}

.btn-secondary {
    background: linear-gradient(120deg, var(--secondary), #d97706);
    color: #fff;
}

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

.preview {
    min-height: 280px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--bg-soft);
    overflow: auto;
    display: grid;
    place-items: center;
    padding: 1rem;
}

.preview img,
.preview svg {
    max-width: 100%;
    max-height: 360px;
}

.preview .placeholder {
    text-align: center;
    color: var(--muted);
}

.notice {
    padding: 0.82rem 0.95rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg-soft) 90%, transparent);
    font-size: 0.95rem;
}

.notice.error {
    border-color: color-mix(in srgb, var(--danger) 50%, var(--border));
    color: var(--danger);
}

.progress-wrap {
    margin-top: 0.85rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.65rem 0.7rem;
    background: color-mix(in srgb, var(--bg-soft) 90%, transparent);
}

.progress-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.84rem;
    color: var(--muted);
    margin-bottom: 0.45rem;
}

.progress-track {
    width: 100%;
    height: 10px;
    border-radius: 999px;
    overflow: hidden;
    background: color-mix(in srgb, var(--bg-elev) 65%, transparent);
    border: 1px solid var(--border);
}

.progress-bar {
    width: 0%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 220ms ease;
}

.facts {
    display: grid;
    gap: 0.9rem;
}

.converter-summary .facts {
    grid-template-columns: 1fr;
}

@media (min-width: 680px) {
    .facts {
        grid-template-columns: repeat(3, 1fr);
    }
}

.fact {
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--bg-soft);
    padding: 1rem;
}

.fact strong {
    font-size: 1.1rem;
    display: block;
}

.faq details {
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg-soft);
    padding: 0.9rem 1rem;
}

.faq details + details {
    margin-top: 0.65rem;
}

.faq summary {
    cursor: pointer;
    font-weight: 700;
}

.site-footer {
    border-top: 1px solid var(--border);
    margin-top: 1.7rem;
    padding: 1.4rem 0 2.4rem;
    color: var(--muted);
}

.reveal {
    opacity: 0;
    transform: translateY(12px);
    animation: revealUp 550ms ease forwards;
}

.reveal-delay-1 {
    animation-delay: 120ms;
}

.reveal-delay-2 {
    animation-delay: 220ms;
}

.reveal-delay-3 {
    animation-delay: 320ms;
}

@keyframes revealUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Footer links ─────────────────────────────────────────── */
.footer-links {
    margin-top: 0.35rem;
    font-size: 0.88rem;
}

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

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

/* ── Cookie consent banner ────────────────────────────────── */
.cookie-banner {
    position: fixed;
    bottom: 1.4rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    width: min(780px, calc(100vw - 2rem));
    display: none;
}

.cookie-banner-inner {
    background: color-mix(in srgb, var(--bg-elev) 97%, transparent);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow), 0 0 0 1px color-mix(in srgb, var(--primary) 20%, transparent);
    padding: 1.1rem 1.3rem;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    flex-wrap: wrap;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.cookie-banner-text {
    flex: 1;
    min-width: 200px;
}

.cookie-banner-text strong {
    display: block;
    margin-bottom: 0.3rem;
    font-size: 0.97rem;
}

.cookie-banner-text p {
    margin: 0;
    font-size: 0.86rem;
    color: var(--muted);
    line-height: 1.5;
}

.cookie-banner-actions {
    display: flex;
    gap: 0.65rem;
    flex-shrink: 0;
    flex-wrap: wrap;
}

.cookie-banner-actions .btn {
    white-space: nowrap;
    font-size: 0.86rem;
    padding: 0.52rem 1rem;
}

/* ── Legal pages (privacy / terms) ───────────────────────── */
.legal-breadcrumb {
    font-size: 0.88rem;
    color: var(--muted);
    margin-bottom: 1rem;
}

.legal-breadcrumb a {
    color: var(--muted);
}

.legal-breadcrumb a:hover {
    color: var(--primary);
}

.legal-content {
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
}

.legal-content h1 {
    margin: 0 0 0.4rem;
    font-size: clamp(1.7rem, 4vw, 2.5rem);
    line-height: 1.1;
}

.legal-content h2 {
    margin: 2rem 0 0.6rem;
    font-size: 1.2rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.4rem;
}

.legal-content h3 {
    margin: 1.2rem 0 0.45rem;
    font-size: 1rem;
    color: var(--text);
}

.legal-content p,
.legal-content ul,
.legal-content ol {
    margin-top: 0.55rem;
    margin-bottom: 0.55rem;
    color: color-mix(in srgb, var(--text) 88%, var(--muted));
}

.legal-content ul,
.legal-content ol {
    padding-left: 1.4rem;
}

.legal-content li {
    margin-bottom: 0.4rem;
    line-height: 1.6;
}

.legal-content strong {
    color: var(--text);
    font-weight: 700;
}

.legal-content code {
    background: color-mix(in srgb, var(--bg-soft) 90%, transparent);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 0.1em 0.4em;
    font-size: 0.88em;
    font-family: "Consolas", "Menlo", monospace;
}

.legal-meta {
    color: var(--muted);
    font-size: 0.88rem;
    margin: 0 0 1.5rem;
}

.legal-contact {
    display: block;
    font-style: normal;
    background: color-mix(in srgb, var(--bg-soft) 80%, transparent);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem 1.1rem;
    margin: 0.7rem 0;
    line-height: 1.8;
}

.legal-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    margin: 0.8rem 0;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.legal-table th,
.legal-table td {
    padding: 0.7rem 0.85rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.legal-table th {
    background: color-mix(in srgb, var(--bg-elev) 85%, transparent);
    font-weight: 700;
}

.legal-table tbody tr:last-child td {
    border-bottom: none;
}

.legal-page-header {
    padding-bottom: 0;
}

.brand[href] {
    text-decoration: none;
    color: inherit;
}