:root {
    --bg: #0f1117;
    --bg-elev: #12151d;
    --card: #171b24;
    --card-hover: #1c2130;
    --ink: #f4f6fb;
    --muted: #9aa3b5;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(124, 92, 252, 0.55);
    --accent: #7c5cfc;
    --accent-2: #4f8cff;
    --brand: #d4a4ff;
    --ok: #34d399;
    --warn: #f5b942;
    --danger: #f87171;
    --shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
    --radius: 18px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    min-height: 100%;
}

body {
    font-family: Inter, system-ui, sans-serif;
    background:
        radial-gradient(circle at 12% -10%, rgba(124, 92, 252, 0.16), transparent 36%),
        radial-gradient(circle at 90% 0%, rgba(79, 140, 255, 0.10), transparent 28%),
        var(--bg);
    color: var(--ink);
}

h1,
h2,
.dropzone strong,
.savings {
    letter-spacing: -0.03em;
}

.eyebrow {
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--brand);
    font-weight: 700;
}

.profile-label,
.muted,
time,
.dropzone small {
    color: var(--muted);
}

.topbar {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 20px;
    align-items: center;
    padding: 28px 36px 8px;
}

.topbar h1 {
    font-size: clamp(28px, 3.4vw, 40px);
    font-weight: 700;
    line-height: 1.1;
    margin-top: 4px;
}

.status-board {
    display: grid;
    grid-template-columns: repeat(4, minmax(88px, 1fr));
    gap: 8px 16px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 12px 16px;
    box-shadow: var(--shadow);
}

.status-board span {
    display: block;
    color: var(--muted);
    font-size: 11px;
    margin-bottom: 4px;
}

.status-board strong {
    font-size: 13px;
    font-weight: 600;
}

.status-board strong::before {
    content: "";
    display: inline-block;
    width: 7px;
    height: 7px;
    margin-right: 7px;
    border-radius: 50%;
    background: var(--ok);
    box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.16);
    vertical-align: 1px;
}

.layout {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, 0.7fr);
    gap: 22px;
    padding: 16px 36px 48px;
}

.workspace {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.history-card,
.card,
.dropzone,
.auth-card,
.analysis-grid,
.result-wrap,
.quality-panel {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.dropzone {
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 1.5px dashed rgba(124, 92, 252, 0.38);
    transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.dropzone:hover,
.dropzone:focus-visible,
.dropzone.is-drag {
    border-color: var(--accent);
    background: #1a1f2e;
}

.dropzone-inner {
    text-align: center;
    padding: 36px 24px;
}

.dropzone-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    color: #c4b5fd;
    background: linear-gradient(180deg, rgba(124, 92, 252, 0.22), rgba(79, 140, 255, 0.08));
}

.dropzone-icon svg {
    width: 32px;
    height: 32px;
}

.dropzone strong {
    display: block;
    font-size: clamp(18px, 2.4vw, 26px);
    font-weight: 650;
    margin-bottom: 8px;
}

.dropzone small {
    display: block;
    margin-top: 14px;
    font-size: 13px;
}

.card,
.history-card,
.analysis-grid,
.result-wrap,
.quality-panel {
    padding: 22px;
}

.history-card h2,
.analysis-grid h2,
.result-wrap h2,
.quality-panel h2 {
    font-size: 18px;
    font-weight: 650;
    margin-bottom: 14px;
}

.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 0;
    border-top: 1px solid var(--line);
}

.history-item:first-of-type {
    border-top: 0;
    padding-top: 0;
}

.history-item p {
    margin: 4px 0;
    font-size: 13px;
}

.history-item time {
    font-size: 12px;
}

.icon-btn {
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    text-decoration: none;
}

.icon-btn svg {
    width: 18px;
    height: 18px;
}

.icon-btn:hover {
    filter: brightness(1.08);
}

.privacy-note {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
    line-height: 1.5;
}

.analysis-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 22px;
}

video {
    width: 100%;
    max-height: 380px;
    background: #0b0d12;
    border-radius: 14px;
}

.meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 16px;
}

.meta dt {
    color: var(--muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.meta dd {
    font-size: 14px;
    font-weight: 600;
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.quality-card {
    text-align: left;
    cursor: pointer;
    color: inherit;
    background: var(--bg-elev);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 14px;
    font: inherit;
    transition: border-color 0.16s ease, background 0.16s ease;
}

.quality-card:hover,
.quality-card:focus-visible {
    border-color: rgba(124, 92, 252, 0.45);
    background: var(--card-hover);
}

.quality-card.is-active {
    border-color: var(--line-strong);
    background: rgba(124, 92, 252, 0.12);
    box-shadow: inset 0 0 0 1px rgba(124, 92, 252, 0.18);
}

.quality-card strong {
    display: block;
    margin-bottom: 6px;
    font-size: 15px;
}

.quality-card span {
    color: var(--muted);
    font-size: 12px;
    line-height: 1.45;
}

.quality-hint {
    margin-top: 12px;
    color: var(--muted);
    font-size: 13px;
}

.quality-details {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}

.quality-details span {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 6px 10px;
    font-size: 12px;
    color: #d5d9e4;
}

.btn-primary,
.btn-ghost {
    border: 0;
    cursor: pointer;
    font: inherit;
    font-weight: 600;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    margin-top: 4px;
    padding: 16px 22px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    font-size: 15px;
    letter-spacing: 0.03em;
    text-decoration: none;
    box-shadow: 0 10px 24px rgba(79, 140, 255, 0.18);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    filter: brightness(1.06);
}

.btn-primary:disabled {
    opacity: 0.55;
    cursor: wait;
    filter: none;
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--card);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 10px 14px;
}

.btn-ghost svg {
    width: 16px;
    height: 16px;
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
    border-color: rgba(255, 255, 255, 0.18);
}

.progress {
    height: 10px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 99px;
    overflow: hidden;
    margin: 12px 0;
}

.progress > div {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transition: width 0.3s ease;
}

.compare {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 20px 0;
}

.compare h3 {
    margin-bottom: 8px;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0 20px;
}

th,
td {
    text-align: left;
    padding: 10px 8px;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
}

td:nth-child(2),
td:nth-child(3),
th:nth-child(2),
th:nth-child(3) {
    text-align: right;
}

.savings {
    font-size: 28px;
    font-weight: 700;
    color: var(--ok);
    margin: 8px 0 16px;
}

.alert {
    background: rgba(248, 113, 113, 0.12);
    color: #fecaca;
    border: 1px solid rgba(248, 113, 113, 0.24);
    border-radius: 14px;
    padding: 16px 18px;
}

.hidden {
    display: none !important;
}

.auth-body {
    display: grid;
    place-items: center;
    min-height: 100vh;
    padding: 24px;
}

.auth-card {
    width: min(440px, 100%);
    padding: 36px;
}

.auth-card h1 {
    font-size: 32px;
    margin: 8px 0 6px;
}

.auth-card label {
    display: block;
    margin: 16px 0;
    color: var(--muted);
}

.auth-card input {
    width: 100%;
    margin-top: 6px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    font: inherit;
    color: var(--ink);
    background: #10131a;
}

.auth-card input:focus {
    outline: 2px solid rgba(124, 92, 252, 0.45);
    outline-offset: 1px;
}

.hint {
    color: var(--muted);
    margin: 12px 0 8px;
    line-height: 1.5;
}

@media (max-width: 1080px) {
    .topbar,
    .layout,
    .analysis-grid,
    .compare,
    .quality-grid,
    .status-board {
        grid-template-columns: 1fr;
    }

    .topbar,
    .layout {
        padding-left: 16px;
        padding-right: 16px;
    }

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