/* === BILLING.CSS ===
   assets/css/billing.css
   НАЗНАЧЕНИЕ: Публичная страница тарифов + модалка авторизации + кабинет биллинга.
   Использует OKLCH-переменные из main.css. Dark-first, индустриальная эстетика.
   РАЗМЕР: ~280 строк */

.billing-public {
    margin: 0;
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* -- Шапка -- */
.bl-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 32px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: color-mix(in oklch, var(--bg-primary), transparent 8%);
    backdrop-filter: blur(10px);
    z-index: 10;
}
.bl-logo {
    font-weight: 800;
    font-size: 18px;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.bl-nav { display: flex; align-items: center; gap: 18px; }
.bl-nav-link { color: var(--text-secondary); text-decoration: none; font-size: 14px; }
.bl-nav-link:hover { color: var(--text-primary); }

/* -- Кнопки -- */
.bl-btn {
    border: none;
    border-radius: var(--radius-sm, 6px);
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.15s ease;
}
.bl-btn-primary { background: var(--color-primary); color: white; }
.bl-btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); }
.bl-btn-ghost { background: transparent; color: var(--text-primary); border: 1px solid var(--border-color); }
.bl-btn-ghost:hover { background: var(--hover-bg); }
.bl-btn-lg { padding: 14px 28px; font-size: 16px; }
.bl-btn-block { width: 100%; }

/* -- Hero -- */
.bl-hero {
    text-align: center;
    padding: 80px 24px 60px;
    max-width: 760px;
    margin: 0 auto;
}
.bl-hero-title {
    font-size: clamp(32px, 6vw, 52px);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin: 0 0 18px;
    line-height: 1.1;
}
.bl-hero-sub {
    font-size: 18px;
    color: var(--text-secondary);
    margin: 0 0 32px;
    line-height: 1.5;
}

/* -- Переключатель цикла -- */
.bl-plans-section { max-width: 1100px; margin: 0 auto; padding: 20px 24px 80px; }
.bl-billing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 40px;
}
.bl-toggle-label { font-size: 15px; color: var(--text-muted); transition: color 0.15s; }
.bl-toggle-label.bl-toggle-active { color: var(--text-primary); font-weight: 600; }
.bl-toggle-label em { color: var(--color-success); font-style: normal; font-weight: 700; font-size: 13px; }
.bl-switch {
    width: 48px;
    height: 26px;
    border-radius: 13px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    position: relative;
    cursor: pointer;
    padding: 0;
    transition: background 0.2s;
}
.bl-switch-on { background: var(--color-primary); }
.bl-switch-knob {
    position: absolute;
    top: 2px; left: 2px;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: white;
    transition: transform 0.2s;
}
.bl-switch-on .bl-switch-knob { transform: translateX(22px); }

/* -- Сетка тарифов -- */
.bl-plans {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    align-items: start;
}
.bl-plans-loading { grid-column: 1/-1; text-align: center; color: var(--text-muted); padding: 40px; }
.bl-plan {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 28px 24px;
    position: relative;
    transition: border-color 0.15s, transform 0.15s;
}
.bl-plan:hover { border-color: color-mix(in oklch, var(--color-primary), transparent 50%); transform: translateY(-3px); }
.bl-plan-popular {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-lg);
}
.bl-plan-badge {
    position: absolute;
    top: -11px; left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.bl-plan-name { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.bl-plan-price { font-size: 38px; font-weight: 800; letter-spacing: -0.02em; }
.bl-per { font-size: 16px; font-weight: 500; color: var(--text-muted); }
.bl-plan-equiv { font-size: 13px; color: var(--text-muted); margin-top: 2px; }
.bl-feats { list-style: none; padding: 0; margin: 20px 0 24px; }
.bl-feat {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 7px 0 7px 24px;
    position: relative;
    line-height: 1.4;
}
.bl-feat::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

/* -- Модалка авторизации (<dialog>) -- */
.bl-modal {
    border: none;
    border-radius: 16px;
    padding: 0;
    background: transparent;
    max-width: 420px;
    width: 92%;
}
.bl-modal::backdrop { background: oklch(0% 0 0 / 0.6); backdrop-filter: blur(4px); }
.bl-modal-inner {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    position: relative;
}
.bl-modal-close {
    position: absolute;
    top: 16px; right: 18px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 26px;
    cursor: pointer;
    line-height: 1;
}
.bl-modal-close:hover { color: var(--text-primary); }
.bl-tabs { display: flex; gap: 4px; margin-bottom: 24px; background: var(--bg-tertiary); border-radius: 10px; padding: 4px; }
.bl-tab {
    flex: 1;
    padding: 9px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    border-radius: 7px;
    cursor: pointer;
    font-family: inherit;
}
.bl-tab-active { background: var(--card-bg); color: var(--text-primary); box-shadow: var(--shadow-sm); }
.bl-form { display: flex; flex-direction: column; gap: 12px; }
.bl-input {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 14px;
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
}
.bl-input:focus { outline: none; border-color: var(--color-primary); }
.bl-form-note { font-size: 12px; color: var(--text-muted); text-align: center; margin: 4px 0 0; }
.bl-form-error { color: var(--color-danger); font-size: 13px; text-align: center; margin-top: 12px; min-height: 18px; }
.bl-hidden { display: none !important; }

/* -- Кабинет биллинга (вкладка в дашборде) -- */
.bl-account-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 16px;
}
.bl-usage-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin: 6px 0 14px;
}
.bl-usage-fill { height: 100%; background: var(--color-primary); border-radius: 4px; transition: width 0.3s; }
.bl-usage-fill.bl-usage-warn { background: var(--color-warning); }
.bl-usage-fill.bl-usage-danger { background: var(--color-danger); }
.bl-usage-label { display: flex; justify-content: space-between; font-size: 13px; color: var(--text-secondary); }

@media (max-width: 640px) {
    .bl-header { padding: 14px 18px; }
    .bl-hero { padding: 50px 18px 40px; }
    .bl-plans { grid-template-columns: 1fr; }
}