* { box-sizing: border-box; }

:root {
    color-scheme: light;
    --page-bg: #f3f4f6;
    --surface: #ffffff;
    --surface-alt: #f9fafb;
    --surface-deep: #0b1220;
    --header-bg: #08142b;
    --footer-bg: #08142b;
    --text-main: #111827;
    --text-on-dark: #e5e7eb;
    --text-soft: #374151;
    --muted: #6b7280;
    --line: #e5e7eb;
    --accent: #2563eb;
    --accent-strong: #1d4ed8;
    --accent-soft: #dbeafe;
    --danger: #dc2626;
    --success: #16a34a;
    --shadow: rgba(15, 23, 42, 0.06);
    --chip-bg: rgba(255,255,255,0.1);
    --secondary-bg: #ffffff;
    --secondary-text: #111827;
    --secondary-border: #d1d5db;
    --input-bg: #ffffff;
    --input-border: #d1d5db;
    --message-success-bg: #dcfce7;
    --message-success-text: #166534;
    --message-error-bg: #fee2e2;
    --message-error-text: #991b1b;
    --theme-toggle-bg: rgba(255,255,255,0.08);
    --theme-toggle-border: rgba(255,255,255,0.14);
    --theme-toggle-text: #ffffff;
    --table-row-hover: rgba(37, 99, 235, 0.04);
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --page-bg: #0b1220;
    --surface: #111827;
    --surface-alt: #0f172a;
    --surface-deep: #020817;
    --header-bg: #020817;
    --footer-bg: #020817;
    --text-main: #e5e7eb;
    --text-on-dark: #e5e7eb;
    --text-soft: #cbd5e1;
    --muted: #94a3b8;
    --line: rgba(255,255,255,0.10);
    --accent: #60a5fa;
    --accent-strong: #3b82f6;
    --accent-soft: rgba(96, 165, 250, 0.15);
    --danger: #f87171;
    --success: #4ade80;
    --shadow: rgba(2, 6, 23, 0.38);
    --chip-bg: rgba(255,255,255,0.08);
    --secondary-bg: #172033;
    --secondary-text: #e5e7eb;
    --secondary-border: rgba(255,255,255,0.12);
    --input-bg: #0b1220;
    --input-border: rgba(255,255,255,0.12);
    --message-success-bg: rgba(34, 197, 94, 0.14);
    --message-success-text: #bbf7d0;
    --message-error-bg: rgba(248, 113, 113, 0.14);
    --message-error-text: #fecaca;
    --theme-toggle-bg: rgba(255,255,255,0.08);
    --theme-toggle-border: rgba(255,255,255,0.12);
    --theme-toggle-text: #ffffff;
    --table-row-hover: rgba(96, 165, 250, 0.06);
}

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

body {
    margin: 0;
    font-family: Inter, Arial, sans-serif;
    background: var(--page-bg);
    color: var(--text-main);
    transition: background-color 0.22s ease, color 0.22s ease;
}

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

a:hover { text-decoration: underline; }

code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    background: var(--surface-alt);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 2px 6px;
}

.container {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    background: var(--header-bg);
    color: var(--text-on-dark);
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(12px);
}

.nav, .nav-wrap {
    display: flex;
    gap: 20px;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
}

.nav nav, .main-nav, .nav-actions, .auth-links {
    display: flex;
    gap: 14px;
    align-items: center;
    flex-wrap: wrap;
}

.brand {
    color: white;
    font-weight: 800;
    font-size: 1.2rem;
}

.nav nav a, .main-nav a, .site-footer a {
    color: inherit;
}

.chip, .user-chip {
    background: var(--chip-bg);
    color: var(--text-on-dark);
    padding: 8px 12px;
    border-radius: 999px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    padding: 10px 16px;
    border-radius: 12px;
    font-weight: 700;
    background: var(--accent);
    color: white;
    text-decoration: none;
    transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
    text-decoration: none;
    background: var(--accent-strong);
}

.btn:active,
.theme-toggle:active {
    transform: translateY(1px);
}

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

.btn-danger {
    background: var(--danger);
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--theme-toggle-border);
    background: var(--theme-toggle-bg);
    color: var(--theme-toggle-text);
    border-radius: 999px;
    padding: 9px 14px;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.15s ease;
}

.theme-toggle:hover {
    background: rgba(255,255,255,0.14);
}

.theme-toggle-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
}

main {
    padding: 28px 0 48px;
    min-height: calc(100vh - 160px);
}

.site-footer {
    background: var(--footer-bg);
    color: var(--text-on-dark);
    padding: 28px 0;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.hero {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 24px;
    align-items: stretch;
    margin-bottom: 24px;
}

.hero-main, .hero-copy, .hero-side, .hero-panel, .panel, .form-card, .legal-page {
    background: var(--surface);
    color: var(--text-main);
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 10px 24px var(--shadow);
    border: 1px solid var(--line);
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.4rem);
    margin: 12px 0;
    line-height: 1.05;
}

.lead {
    font-size: 1.08rem;
    color: var(--text-soft);
    max-width: 58ch;
}

.hero-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 700;
    padding: 8px 12px;
    border-radius: 999px;
}

.cards-row {
    margin: 20px 0;
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(4, 1fr);
}

.cards-row.stats-compact {
    grid-template-columns: repeat(3, 1fr);
}

.metric-card {
    background: var(--surface-alt);
    border: 1px solid var(--line);
    padding: 18px;
    border-radius: 16px;
}

.metric-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 6px;
}

.metric-label, .muted {
    color: var(--muted);
}

.feature-note {
    border-radius: 16px;
    background: var(--surface-deep);
    color: var(--text-on-dark);
    padding: 16px;
    border: 1px solid var(--line);
}

.feature-note p {
    margin: 0 0 10px;
}

.feature-note p:last-child {
    margin-bottom: 0;
}

.feature-grid, .panel-grid {
    display: grid;
    gap: 20px;
}

.feature-grid {
    grid-template-columns: repeat(2, 1fr);
}

.page-header, .header-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
}

.panel-grid {
    grid-template-columns: repeat(2, 1fr);
    margin-bottom: 20px;
}

.panel h2 {
    margin-top: 0;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

tbody tr:hover {
    background: var(--table-row-hover);
}

.compact-list {
    margin: 0;
    padding-left: 18px;
}

.form-card {
    max-width: 820px;
}

.form-card.narrow {
    max-width: 760px;
    margin: 0 auto;
}

form p {
    margin-bottom: 14px;
}

label {
    display: block;
    font-weight: 700;
    margin-bottom: 6px;
}

input, textarea, select {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--input-border);
    border-radius: 12px;
    background: var(--input-bg);
    color: var(--text-main);
    font: inherit;
}

input::placeholder,
textarea::placeholder {
    color: var(--muted);
}

input:focus,
textarea:focus,
select:focus,
.theme-toggle:focus,
.btn:focus {
    outline: 2px solid transparent;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.helptext {
    display: block;
    color: var(--muted);
    font-size: 0.9rem;
    margin-top: 4px;
}

ul.errorlist {
    color: var(--danger);
    margin: 6px 0 0;
}

.messages {
    display: grid;
    gap: 10px;
    margin-bottom: 20px;
}

.message {
    padding: 14px 16px;
    border-radius: 12px;
    font-weight: 600;
    border: 1px solid var(--line);
}

.message.success {
    background: var(--message-success-bg);
    color: var(--message-success-text);
}

.message.error {
    background: var(--message-error-bg);
    color: var(--message-error-text);
}

.bars {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 12px;
    align-items: end;
    min-height: 170px;
}

.bar-col {
    display: flex;
    flex-direction: column;
    justify-content: end;
    align-items: center;
    gap: 8px;
    min-height: 170px;
}

.bar {
    width: 100%;
    min-height: 12px;
    background: linear-gradient(180deg, #60a5fa 0%, var(--accent-strong) 100%);
    border-radius: 12px 12px 4px 4px;
}

.bar-value {
    font-weight: 700;
}

.bar-label {
    font-size: 0.85rem;
    color: var(--muted);
}

.qr-box svg {
    width: 180px;
    height: 180px;
}

.legal-page {
    line-height: 1.7;
}

.form-grid {
    display: grid;
    gap: 16px;
}

.form-grid.two-col {
    grid-template-columns: repeat(2, 1fr);
}

.form-field.full {
    grid-column: 1 / -1;
}

.form-field label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
}

.form-field input,
.form-field textarea,
.form-field select,
form p input,
form p textarea,
form p select {
    width: 100%;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--text-main);
    font: inherit;
}

.help-text,
.form-field .helptext,
form p .helptext {
    display: block;
    margin-top: 8px;
    color: var(--muted);
}

.errorlist {
    color: var(--danger);
    margin: 8px 0 0;
    padding-left: 22px;
}

.subpanel {
    margin: 24px 0;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--surface-alt);
}

.compact-list-plain {
    list-style: none;
    padding-left: 0;
}

.form-help-row {
    margin-top: 12px;
}

@media (max-width: 960px) {
    .hero, .feature-grid, .panel-grid, .cards-row, .cards-row.stats-compact {
        grid-template-columns: 1fr;
    }

    .nav, .nav-wrap {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 900px) {
    .form-grid.two-col,
    .panel-grid,
    .feature-grid,
    .hero,
    .cards-row,
    .cards-row.stats-compact {
        grid-template-columns: 1fr;
    }

    .form-field.full {
        grid-column: auto;
    }
}