:root {
    --bg: #f4f7fb;
    --surface: #ffffff;
    --text: #122033;
    --muted: #5f6b7a;
    --border: #dbe3ee;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --shadow: 0 8px 24px rgba(15, 23, 42, 0.07);
    --radius: 18px;
}

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

body {
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

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

.shell {
    width: min(960px, calc(100% - 24px));
    margin: 0 auto;
}

/* ── Header ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(244, 247, 251, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(219, 227, 238, 0.8);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
}

.brand {
    font-weight: 800;
    color: var(--text);
}

.back-link {
    font-weight: 600;
    color: var(--text);
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.08);
}

.back-link:hover { background: rgba(37, 99, 235, 0.14); color: var(--text); }

.nav-form { margin: 0; }

.logout-btn {
    border: 1px solid rgba(220, 38, 38, 0.2);
    background: rgba(220, 38, 38, 0.07);
    color: #b91c1c;
    padding: 8px 14px;
    border-radius: 999px;
    font: inherit;
    cursor: pointer;
    box-shadow: none;
}

.logout-btn:hover { background: rgba(220, 38, 38, 0.14); }

/* ── Layout ── */
.page { padding: 20px 0 48px; }

.stack { display: grid; gap: 14px; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
}

.muted { color: var(--muted); }
.small { font-size: 0.9rem; }

/* ── Dashboard action buttons ── */
.action-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.button-card {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    border-radius: var(--radius);
    background: var(--primary);
    color: #fff;
    font: inherit;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: 0;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.2);
    text-align: center;
    padding: 16px;
    transition: transform 0.1s, background 0.1s;
}

.button-card:hover { background: var(--primary-dark); transform: translateY(-1px); color: #fff; }

.admin-link { display: block; text-align: right; }

/* ── Generic button ── */
.button {
    background: var(--primary);
    color: #fff;
    border: 0;
    border-radius: 999px;
    padding: 12px 22px;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.18);
}

.button:hover { background: var(--primary-dark); }

/* ── Alerts ── */
.msg-stack { display: grid; gap: 10px; margin-bottom: 14px; }

.alert {
    border-radius: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    background: #fff;
}

.alert-error {
    border-color: rgba(220, 38, 38, 0.25);
    background: rgba(220, 38, 38, 0.06);
    color: #991b1b;
}

/* ── Camera page ── */
.camera-page {
    display: grid;
    gap: 16px;
}

.camera-shell { position: relative; }

.camera-feed {
    width: 100%;
    max-height: 65vh;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius);
    background: #0f172a;
    border: 1px solid var(--border);
    object-fit: cover;
    display: block;
}

.camera-controls {
    display: flex;
    justify-content: center;
    padding: 8px 0;
}

.capture-button {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 7px solid rgba(255, 255, 255, 0.85);
    background: radial-gradient(circle at 34% 34%, #fff 0 18%, #ef4444 20%, #dc2626 100%);
    box-shadow: 0 10px 26px rgba(220, 38, 38, 0.3);
    cursor: pointer;
    transition: transform 0.1s;
}

.capture-button:hover:not(:disabled) { transform: scale(1.05); }

.capture-button:disabled {
    opacity: 0.45;
    background: radial-gradient(circle at 34% 34%, #fff 0 18%, #94a3b8 20%, #64748b 100%);
    box-shadow: none;
}

.camera-status { text-align: center; min-height: 1.4em; }

/* ── History gallery ── */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.record-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.record-delete-form {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
    margin: 0;
}

.delete-corner {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: 50%;
    border: 0;
    background: rgba(10, 16, 30, 0.72);
    color: #fff;
    font-size: 1.15rem;
    line-height: 1;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: none;
}

.delete-corner:hover { background: rgba(10, 16, 30, 0.9); }

.record-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

.record-meta {
    display: grid;
    gap: 3px;
    padding: 12px 14px;
    font-size: 0.95rem;
}

.record-meta strong { color: var(--text); }

.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--muted);
}

/* ── Auth ── */
.auth-card { max-width: 420px; margin: 0 auto; }

.form-grid { display: grid; gap: 14px; }
.form-grid label { display: block; margin-bottom: 5px; font-weight: 600; }
.form-grid input {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 11px 13px;
    font: inherit;
    background: #fff;
}

/* ── Utility ── */
.visually-hidden {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* ── Responsive ── */
@media (max-width: 600px) {
    .action-grid { grid-template-columns: 1fr; }
    .button-card { min-height: 64px; }
    .gallery { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}

/* ── Language switcher ── */
.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.lang-form {
    display: flex;
    gap: 4px;
    margin: 0;
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
    border-radius: 999px;
    padding: 5px 11px;
    font: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: none;
    letter-spacing: 0.03em;
}

.lang-btn:hover { background: rgba(37, 99, 235, 0.07); color: var(--text); }
.lang-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ── Dashboard intro ── */
.dashboard-intro {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.intro-text {
    color: var(--muted);
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.5;
    max-width: 520px;
}
.intro-highlight {
    color: var(--text);
    font-weight: 800;
    font-size: 1.08rem;
}

.brand-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-chip {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--border);
    background: rgba(15, 23, 42, 0.04);
    color: var(--muted);
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 0.92rem;
    font-weight: 600;
}