:root {
    --bg: #f5f5f5;
    --panel: #ffffff;
    --panel-muted: #fafafa;
    --border: #d9d9d9;
    --border-strong: #111111;
    --text: #111111;
    --muted: #666666;
    --primary: #111111;
    --primary-hover: #2b2b2b;
    --success: #1f6f43;
    --warning: #8a5b00;
    --danger: #a12d2d;
    --tg-bg-color: #f5f5f5;
    --tg-text-color: #111111;
    --tg-hint-color: #666666;
    --tg-button-color: #111111;
    --tg-button-text-color: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.5;
}

html[data-telegram="true"] body {
    background: var(--tg-bg-color);
    color: var(--tg-text-color);
}

html[data-telegram="true"] .muted-text,
html[data-telegram="true"] .meta-line,
html[data-telegram="true"] .eyebrow,
html[data-telegram="true"] .stat-label,
html[data-telegram="true"] .legend,
html[data-telegram="true"] .weekday,
html[data-telegram="true"] .cell-body p {
    color: var(--tg-hint-color);
}

html[data-telegram="true"] .primary-button,
html[data-telegram="true"] .active-pill {
    background: var(--tg-button-color);
    border-color: var(--tg-button-color);
    color: var(--tg-button-text-color);
}

a {
    color: inherit;
    text-decoration: none;
}

main {
    padding-bottom: 32px;
}

.page-shell {
    width: min(1040px, calc(100% - 32px));
    margin: 0 auto;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
}

.brand {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.topnav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.topnav a,
.ghost-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 14px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
}

.topnav a:hover,
.ghost-button:hover {
    border-color: var(--border-strong);
}

.inline-form {
    display: inline-flex;
}

.ghost-button {
    cursor: pointer;
    font: inherit;
}

.hero,
.split-layout,
.feature-grid,
.stats-grid,
.form-row {
    display: grid;
    gap: 16px;
}

.hero,
.split-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 16px;
}

.stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.compact-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 20px 0;
}

.hero-copy,
.hero-card,
.panel,
.feature-card,
.stat,
.submission-card,
.user-card,
.calendar-cell,
.flash {
    background: var(--panel);
    border: 1px solid var(--border);
}

.hero-copy,
.hero-card,
.panel,
.feature-card {
    padding: 20px;
}

.hero {
    margin-bottom: 16px;
}

.hero-copy h1,
.panel h1,
.panel h2,
.hero-card h2,
.feature-card h3 {
    margin: 0 0 12px;
    font-size: 1.6rem;
    line-height: 1.2;
}

.panel h2,
.hero-card h2,
.feature-card h3 {
    font-size: 1.1rem;
}

.hero-text,
.muted-text,
.panel p,
.feature-card p {
    margin: 0;
    color: var(--muted);
}

.eyebrow {
    margin: 0 0 8px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    font-weight: 700;
}

.hero-actions,
.toolbar-actions,
.filter-pills,
.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.hero-actions {
    margin-top: 16px;
}

.meta-line {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.primary-button,
.secondary-button,
.danger-button,
.pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 16px;
    border: 1px solid var(--border-strong);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.primary-button {
    background: var(--primary);
    color: #ffffff;
}

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

.secondary-button,
.pill {
    background: var(--panel);
    color: var(--text);
}

.secondary-button:hover,
.pill:hover {
    background: var(--panel-muted);
}

.danger-button {
    background: #ffffff;
    color: var(--danger);
    border-color: var(--danger);
}

.danger-button:hover {
    background: #fff4f4;
}

.stat {
    padding: 16px;
}

.stat-value {
    display: block;
    font-size: 1.7rem;
    font-weight: 700;
    margin-bottom: 4px;
}

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

.panel-header {
    margin-bottom: 20px;
}

.narrow-panel {
    width: min(520px, 100%);
    margin: 48px auto;
}

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

.form-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

label {
    display: grid;
    gap: 6px;
    font-weight: 600;
}

input,
textarea,
select {
    width: 100%;
    min-height: 42px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    background: #ffffff;
    color: var(--text);
    font: inherit;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--border-strong);
}

textarea {
    resize: vertical;
}

.checkbox-label {
    grid-template-columns: auto 1fr;
    align-items: center;
}

.checkbox-label input {
    width: auto;
    min-height: auto;
    margin: 0;
}

.calendar-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.legend {
    margin-bottom: 16px;
    color: var(--muted);
}

.legend-dot {
    width: 10px;
    height: 10px;
    display: inline-block;
    margin-right: 6px;
}

.success-dot {
    background: var(--success);
}

.empty-dot {
    background: #bcbcbc;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 8px;
}

.weekday {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--muted);
    padding: 6px 0;
}

.calendar-cell {
    min-height: 150px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.filled-cell {
    border-color: var(--border-strong);
}

.muted-cell {
    opacity: 0.45;
}

.today-cell {
    border-width: 2px;
}

.cell-head,
.submission-head,
.user-card {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
}

.cell-day {
    font-size: 1.1rem;
    font-weight: 700;
}

.cell-body,
.submission-list,
.user-list,
.review-forms {
    display: grid;
    gap: 8px;
}

.cell-body p {
    margin: 0;
    color: var(--muted);
}

.mini-link {
    color: var(--text);
    font-weight: 700;
    text-decoration: underline;
}

.mini-form {
    margin: 0;
}

.mini-action {
    min-height: 32px;
    padding: 6px 10px;
    font-size: 0.85rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 4px 8px;
    border: 1px solid currentColor;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: lowercase;
    background: #ffffff;
}

.badge-success,
.badge-approved {
    color: var(--success);
}

.badge-empty,
.badge-pending {
    color: var(--warning);
}

.badge-rejected {
    color: var(--danger);
}

.submission-card,
.user-card {
    padding: 14px;
}

.user-actions {
    display: grid;
    gap: 8px;
    justify-items: end;
}

.admin-card {
    background: var(--panel-muted);
}

.admin-note {
    margin: 0;
    padding: 10px 12px;
    border: 1px solid var(--border);
    background: #f3f3f3;
    color: var(--text);
}

.pill {
    border-color: var(--border);
}

.active-pill {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

.flash-stack {
    display: grid;
    gap: 8px;
    margin-bottom: 16px;
}

.flash {
    padding: 12px 14px;
}

.flash-success {
    border-left: 4px solid var(--success);
}

.flash-danger {
    border-left: 4px solid var(--danger);
}

.flash-warning {
    border-left: 4px solid var(--warning);
}

.demo-help {
    margin-top: 14px;
}

@media (max-width: 980px) {
    .hero,
    .split-layout,
    .feature-grid,
    .stats-grid,
    .compact-stats,
    .form-row {
        grid-template-columns: 1fr;
    }

    .calendar-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .weekday {
        display: none;
    }
}

@media (max-width: 640px) {
    .page-shell {
        width: min(100% - 20px, 100%);
    }

    .topbar,
    .calendar-toolbar {
        align-items: flex-start;
    }

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

    .calendar-cell {
        min-height: 0;
    }
}