:root {
    --bg: #0f1115;
    --surface: #171a21;
    --surface-2: #1e222b;
    --border: #2a2f3a;
    --text: #e6e8ec;
    --text-dim: #9aa3b2;
    --accent: #4ade80;
    --accent-dim: #22c55e;
    --danger: #f87171;
    --radius: 12px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Шапка --- */

.site-header {
    border-bottom: 1px solid var(--border);
    background: rgba(23, 26, 33, 0.8);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
    flex-wrap: wrap;
}

.brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text);
    text-decoration: none;
    white-space: nowrap;
}

.brand-mark {
    color: var(--accent);
}

.nav {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.nav a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.15s;
}

.nav a:hover {
    color: var(--text);
}

.nav a.btn {
    color: #0b0d11;
}

.inline-form {
    display: inline;
    margin: 0;
}

.link-button {
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    font-size: 0.95rem;
    font-family: inherit;
    padding: 0;
}

.link-button:hover {
    color: var(--text);
}

/* --- Основной блок --- */

.main-content {
    flex: 1;
    padding-top: 32px;
    padding-bottom: 48px;
}

h1 {
    font-size: 1.9rem;
    margin: 0 0 8px;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.3rem;
    margin: 32px 0 12px;
}

.subtitle {
    color: var(--text-dim);
    margin: 0 0 28px;
}

/* --- Карточки --- */

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-dim);
    margin: 0 0 12px;
}

/* --- Статус подписки --- */

.status-line {
    display: flex;
    align-items: baseline;
    gap: 12px;
    flex-wrap: wrap;
}

.status-badge {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-active {
    background: rgba(74, 222, 128, 0.15);
    color: var(--accent);
}

.status-inactive {
    background: rgba(248, 113, 113, 0.15);
    color: var(--danger);
}

.big-number {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

/* --- Ссылка подписки --- */

.sub-link {
    display: flex;
    gap: 8px;
    align-items: stretch;
    flex-wrap: wrap;
}

.sub-link input {
    flex: 1;
    min-width: 240px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    padding: 10px 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.85rem;
}

/* --- Тарифы --- */

.tariff-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.tariff {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 20px;
    text-align: center;
    transition: border-color 0.15s, transform 0.15s;
}

.tariff:hover {
    border-color: var(--accent-dim);
    transform: translateY(-2px);
}

.tariff-name {
    font-size: 1rem;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.tariff-price {
    font-size: 1.9rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.tariff-per {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-bottom: 18px;
}

/* --- Кнопки --- */

.btn {
    display: inline-block;
    background: var(--accent);
    color: #0b0d11;
    border: none;
    border-radius: 8px;
    padding: 11px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background 0.15s;
}

.btn:hover {
    background: var(--accent-dim);
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-small {
    padding: 7px 14px;
    font-size: 0.9rem;
}

.btn-secondary {
    background: var(--surface-2);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

/* --- Формы --- */

.form-narrow {
    max-width: 400px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.form-group input {
    width: 100%;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    padding: 11px 12px;
    font-size: 0.95rem;
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-dim);
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
}

.checkbox-row input {
    width: auto;
}

.checkbox-row label {
    margin: 0;
}

.field-error {
    color: var(--danger);
    font-size: 0.85rem;
    display: block;
    margin-top: 4px;
}

.form-footer {
    margin-top: 18px;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.form-footer a {
    color: var(--accent);
}

/* --- Уведомления --- */

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.alert-error {
    background: rgba(248, 113, 113, 0.12);
    border: 1px solid rgba(248, 113, 113, 0.3);
    color: var(--danger);
}

.alert-success {
    background: rgba(74, 222, 128, 0.12);
    border: 1px solid rgba(74, 222, 128, 0.3);
    color: var(--accent);
}

.validation-summary-errors ul {
    margin: 0;
    padding-left: 18px;
}

/* --- Таблицы --- */

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

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

th {
    text-align: left;
    padding: 10px 12px;
    color: var(--text-dim);
    font-weight: 500;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
}

/* --- Подвал --- */

.site-footer {
    border-top: 1px solid var(--border);
    padding: 20px 0;
    font-size: 0.85rem;
    color: var(--text-dim);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-dim);
    margin-left: 16px;
    text-decoration: none;
}

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

/* --- Лендинг --- */

.hero {
    text-align: center;
    padding: 48px 0 40px;
}

.hero h1 {
    font-size: 2.6rem;
}

.hero p {
    color: var(--text-dim);
    font-size: 1.05rem;
    max-width: 520px;
    margin: 0 auto 28px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin: 40px 0;
}

.feature {
    padding: 20px;
}

.feature h3 {
    font-size: 1rem;
    margin: 0 0 6px;
}

.feature p {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin: 0;
}

.prose p, .prose li {
    color: var(--text-dim);
}

.prose h2 {
    color: var(--text);
}