:root {
    --bg-color: #050b08;
    --card-bg: #0b1711;
    --card-border: #132d20;
    --neon-green: #00e676;
    --neon-green-glow: rgba(0, 230, 118, 0.25);
    --gold: #ffb300;
    --gold-glow: rgba(255, 179, 0, 0.3);
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    background-image: radial-gradient(circle at 50% 0%, #0d2818 0%, var(--bg-color) 70%);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 900px;
    margin: 20px;
    padding: 20px;
    text-align: center;
    animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Шапка */
header {
    margin-bottom: 40px;
}

.logo-container {
    width: 90px;
    height: 90px;
    margin: 0 auto 20px;
    border-radius: 50%;
    border: 2px solid var(--neon-green);
    box-shadow: 0 0 25px var(--neon-green-glow);
    overflow: hidden;
    animation: pulseGlow 3s infinite alternate;
}

.logo-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

header h1 {
    color: #ffffff;
    font-size: 2.8rem;
    margin: 0 0 10px 0;
    letter-spacing: 1px;
    text-shadow: 0 0 20px rgba(0, 230, 118, 0.4);
}

header h1 span {
    color: var(--gold);
    text-shadow: 0 0 20px var(--gold-glow);
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin: 0;
}

/* Сетка тарифов */
.tariffs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
    justify-content: center;
    margin-top: 20px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 35px 25px;
    border-radius: 16px;
    position: relative;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--neon-green);
    box-shadow: 0 15px 35px var(--neon-green-glow);
}

.card.popular {
    border-color: var(--gold);
    background: linear-gradient(180deg, #111e13 0%, var(--card-bg) 100%);
    box-shadow: 0 10px 30px var(--gold-glow);
}

.card.popular:hover {
    border-color: var(--gold);
    box-shadow: 0 15px 40px var(--gold-glow);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gold);
    color: #050b08;
    font-size: 0.75rem;
    font-weight: bold;
    padding: 4px 12px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 0 10px var(--gold-glow);
}

.card h3 {
    font-size: 1.4rem;
    margin: 0 0 15px 0;
    color: #ffffff;
}

.price {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--neon-green);
    margin: 15px 0 25px 0;
    text-shadow: 0 0 15px rgba(0, 230, 118, 0.3);
}

.card.popular .price {
    color: var(--gold);
    text-shadow: 0 0 15px var(--gold-glow);
}

.price span {
    font-size: 0.9rem;
    font-weight: normal;
    color: var(--text-muted);
}

/* Кнопки */
button.buy-btn {
    background: transparent;
    color: var(--neon-green);
    border: 2px solid var(--neon-green);
    padding: 12px 20px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    box-shadow: 0 0 10px rgba(0, 230, 118, 0.1);
}

button.buy-btn:hover {
    background: var(--neon-green);
    color: #050b08;
    box-shadow: 0 0 20px var(--neon-green-glow);
    transform: scale(1.02);
}

.card.popular button.buy-btn {
    color: var(--gold);
    border-color: var(--gold);
    box-shadow: 0 0 10px rgba(255, 179, 0, 0.1);
}

.card.popular button.buy-btn:hover {
    background: var(--gold);
    color: #050b08;
    box-shadow: 0 0 20px var(--gold-glow);
}

/* Модальное окно */
.modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(3, 7, 5, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 1000;
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 35px;
    border-radius: 20px;
    width: 100%;
    max-width: 380px;
    text-align: left;
    box-shadow: 0 20px 50px rgba(0,0,0,0.8);
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-content h3 {
    margin-top: 0;
    color: #fff;
    font-size: 1.5rem;
}

#selected-tariff-text {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.modal-content input {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 20px;
    border-radius: 10px;
    border: 1px solid var(--card-border);
    background: var(--bg-color);
    color: white;
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.modal-content input:focus {
    outline: none;
    border-color: var(--neon-green);
    box-shadow: 0 0 10px var(--neon-green-glow);
}

.close-btn {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--card-border);
}

.close-btn:hover {
    background: rgba(255,255,255,0.05);
    color: #fff;
    box-shadow: none;
    transform: none;
}

/* Анимации */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
    0% { box-shadow: 0 0 15px rgba(0, 230, 118, 0.2); }
    100% { box-shadow: 0 0 30px rgba(0, 230, 118, 0.5); }
}

* { box-sizing: border-box; }
.logo-text { display: grid; place-items: center; height: 100%; font-size: 3rem; font-weight: 800; color: var(--neon-green); }
.buy-btn:disabled { cursor: not-allowed; opacity: .65; }
.payment-notice { color: var(--text-muted); margin-top: 28px; }
@media (max-width: 400px) { .container { margin: 8px; padding: 12px; } .tariffs { grid-template-columns: 1fr; } }