:root {
    /* --- СУРСЫ И РЕСУРСЫ (Папка /opt/vayvpn/static/assets/) --- */
    --asset-logo: url('/static/assets/logo.png');
    --asset-bg: url('/static/assets/bg.jpg');

    /* --- ЦВЕТОВАЯ ПАЛИТРА --- */
    --bg-dark: #0f111a;
    --card-bg: #181b29;
    --input-bg: #222638;
    --border-color: #2e344d;
    --accent-color: #6366f1;
    --accent-hover: #4f46e5;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --danger-color: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.15);
    --success-color: #10b981;
    --success-bg: rgba(16, 185, 129, 0.15);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-dark);
    background-image: var(--asset-bg);
    background-size: cover;
    background-attachment: fixed;
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.5;
}

/* --- КОНТЕЙНЕРЫ --- */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 24px 20px;
}

/* --- ШАПКА / NAVBAR --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    background: rgba(24, 27, 41, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 700;
    font-size: 1.25rem;
}

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

.logo-badge {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    background-image: var(--asset-logo), linear-gradient(135deg, #6366f1, #a855f7);
    background-size: cover;
    background-position: center;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
    color: #fff;
    margin: 0 auto 16px auto; /* Центрирование */
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.navbar .logo-badge {
    margin: 0; /* В шапке без отступа снизу */
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* --- КНОПКИ --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-color);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background: var(--input-bg);
    border-color: var(--accent-color);
}

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

.btn-danger:hover {
    background: var(--danger-color);
    color: #fff;
}

.btn-block {
    width: 100%;
}

/* --- СТРАНИЦЫ АВТОРИЗАЦИИ (LOGIN / REGISTER) --- */
body.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    text-align: center;
}

.auth-card .logo-badge {
    margin: 0 auto 16px auto; /* Строго по центру */
}

.back-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    display: inline-block;
    margin-bottom: 20px;
    float: left;
    transition: color 0.2s;
}

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

.auth-card h2 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 24px;
    clear: both;
}

.auth-card h2 span {
    color: var(--accent-color);
}

.form-group {
    margin-bottom: 16px;
    text-align: left;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-main);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* --- ОШИБКИ И Telegram --- */
.error-banner {
    background-color: var(--danger-bg);
    border: 1px solid var(--danger-color);
    color: #fca5a5;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    margin-bottom: 16px;
    text-align: center;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin: 20px 0;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.divider span {
    padding: 0 10px;
}

.tg-auth-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.auth-footer {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 15px;
}

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

/* --- ГЛАВНАЯ СТРАНИЦА (HERO & FAQ) --- */
.hero {
    padding: 60px 0 40px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 650px;
    margin: 0 auto 24px auto;
}

.faq-section {
    margin-top: 50px;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 12px;
}

/* --- ЛИЧНЫЙ КАБИНЕТ (DASHBOARD) --- */
.dash-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.dash-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.dash-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 24px;
}

.status-active {
    background: var(--success-bg);
    color: var(--success-color);
    border: 1px solid var(--success-color);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
}

.status-inactive {
    background: var(--danger-bg);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
}

.hidden {
    display: none !important;
}


/* --- КРАСИВОЕ ВСПЛЫВАЮЩЕЕ ОКНО ОПЛАТЫ --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(10, 12, 20, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.25s ease, visibility 0.25s ease;
    padding: 20px;
}

.modal-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.modal-card {
    background: #181b29;
    border: 1px solid #2e344d;
    border-radius: 20px;
    width: 100%;
    max-width: 440px;
    padding: 28px;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    transform: scale(1);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.hidden .modal-card {
    transform: scale(0.92);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #222638;
    border: 1px solid #2e344d;
    color: #9ca3af;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.modal-close:hover {
    background: #2e344d;
    color: #fff;
}

/* Кастомный слайдер */
.range-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: #222638;
    outline: none;
    margin: 12px 0;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #6366f1;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
    transition: transform 0.15s;
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

/* Селектор срока */
.duration-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-top: 8px;
}

.duration-btn {
    background: #222638;
    border: 1px solid #2e344d;
    color: #f3f4f6;
    padding: 10px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.duration-btn.active {
    background: #6366f1;
    border-color: #6366f1;
    color: #fff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Способы оплаты */
.payment-methods {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 8px;
}

.pay-method-btn {
    background: #222638;
    border: 1px solid #2e344d;
    border-radius: 10px;
    padding: 10px 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #f3f4f6;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.pay-method-btn.active {
    border-color: #6366f1;
    background: rgba(99, 102, 241, 0.15);
    color: #fff;
}

/* Карточка итоговой цены */
.price-box {
    background: #222638;
    border: 1px solid #2e344d;
    padding: 16px;
    border-radius: 12px;
    margin: 20px 0;
    text-align: center;
}

.price-box .price-label {
    font-size: 0.8rem;
    color: #9ca3af;
}

.price-box .price-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: #6366f1;
}