:root {
    --bg-deep: #0A0415;
    --bg-purple: #2E0A52;
    --accent-purple: #A855F7;
    --accent-dark: #7C3AED;
    --accent-pink: #E879F9;
    --accent-light: #F0ABFC;
    --gold: #FBBF24;
    --gold-light: #FDE68A;
    --gold-dark: #F59E0B;
    --text-primary: #F0ABFC;
    --text-secondary: #C4B5FD;
    --text-muted: #A78BFA;
    --card-bg: rgba(168, 85, 247, 0.08);
    --card-border: rgba(168, 85, 247, 0.15);
    --glass-bg: rgba(46, 10, 82, 0.4);
    --glass-border: rgba(168, 85, 247, 0.2);
    --radius: 18px;
    --radius-sm: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0A0415 0%, #2E0A52 50%, #1a0a30 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 0 16px 16px;
    overflow-x: hidden;
}

/* Звёздное поле */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image: 
        radial-gradient(1px 1px at 10% 20%, rgba(240,171,252,0.6), transparent),
        radial-gradient(1px 1px at 20% 60%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 30% 15%, rgba(253,230,138,0.5), transparent),
        radial-gradient(1px 1px at 50% 80%, rgba(240,171,252,0.4), transparent),
        radial-gradient(1px 1px at 70% 30%, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 85% 50%, rgba(232,121,249,0.5), transparent),
        radial-gradient(1px 1px at 90% 75%, rgba(253,230,138,0.4), transparent),
        radial-gradient(1px 1px at 15% 85%, rgba(255,255,255,0.3), transparent),
        radial-gradient(1px 1px at 60% 10%, rgba(240,171,252,0.5), transparent),
        radial-gradient(1px 1px at 40% 45%, rgba(251,191,36,0.4), transparent);
    z-index: 0;
    pointer-events: none;
}

.container {
    max-width: 480px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* ХЕДЕР */
.app-header {
    text-align: center;
    padding: 28px 0 12px;
    position: relative;
}
.app-header .stars-icon {
    font-size: 52px;
    display: block;
    animation: float 3s ease-in-out infinite;
}
@keyframes float {
    0%,100%{transform:translateY(0)}
    50%{transform:translateY(-8px)}
}
.app-header h1 {
    font-size: 26px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-light), var(--accent-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}
.app-header .subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* КАРТОЧКИ */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 18px;
    margin-bottom: 14px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
}
.card:hover {
    background: rgba(168, 85, 247, 0.12);
    border-color: var(--accent-purple);
}
.card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--accent-light);
    margin-bottom: 14px;
}

/* ИНПУТЫ */
.input-wrapper {
    position: relative;
    margin-bottom: 10px;
}
.input-wrapper .input-prefix {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 16px;
    font-weight: 600;
}
.input-wrapper input {
    width: 100%;
    padding: 14px 14px 14px 34px;
    background: rgba(46,10,82,0.5);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    transition: all 0.3s;
}
.input-wrapper input:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px rgba(168,85,247,0.2);
}

/* СЕТКА СУММ */
.amount-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 10px;
}
.amount-btn {
    padding: 11px;
    background: rgba(46,10,82,0.5);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}
.amount-btn:hover {
    border-color: var(--accent-purple);
    background: rgba(168,85,247,0.2);
    transform: translateY(-2px);
}
.amount-btn.active {
    background: linear-gradient(135deg, var(--accent-dark), var(--accent-purple));
    border-color: var(--accent-purple);
    color: #fff;
    box-shadow: 0 4px 16px rgba(168,85,247,0.4);
}
.custom-amount { margin-top: 8px; }
.custom-amount input {
    width: 100%;
    padding: 12px;
    background: rgba(46,10,82,0.5);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 15px;
    text-align: center;
    outline: none;
}

/* ИТОГО */
.total-box {
    background: linear-gradient(135deg, rgba(168,85,247,0.15), rgba(251,191,36,0.08));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 18px;
    text-align: center;
    margin: 16px 0;
}
.total-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.total-amount {
    font-size: 38px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.total-sub {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* КНОПКИ */
.btn {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    letter-spacing: 0.3px;
    margin-bottom: 8px;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-dark));
    color: #fff;
    box-shadow: 0 4px 16px rgba(168,85,247,0.4);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(168,85,247,0.6);
}
.btn-primary:active { transform: scale(0.97); }
.btn-secondary {
    background: rgba(46,10,82,0.5);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}
.btn-ton {
    background: linear-gradient(135deg, #0088cc, #0aa7f5);
    color: #fff;
}
.btn-card {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
}
.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* МЕТОДЫ ОПЛАТЫ */
.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.payment-method-card {
    display: flex;
    align-items: center;
    padding: 16px;
    background: var(--card-bg);
    border: 2px solid var(--card-border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s;
}
.payment-method-card:hover {
    border-color: var(--accent-purple);
    transform: translateX(4px);
}
.payment-icon { font-size: 32px; margin-right: 12px; }
.payment-info { flex: 1; }
.payment-name { font-size: 16px; font-weight: 700; }
.payment-desc { font-size: 12px; color: var(--text-muted); }
.payment-arrow { color: var(--text-muted); font-size: 18px; }

/* TON PAYMENT */
.invoice-amount { font-size: 28px; font-weight: 700; text-align: center; margin: 8px 0; }
.invoice-address {
    background: rgba(46,10,82,0.5);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: 10px;
    font-family: monospace;
    font-size: 12px;
    color: var(--text-secondary);
    word-break: break-all;
    text-align: center;
    margin: 12px 0;
}

/* СТАТУС */
.status-pending { color: var(--gold); animation: pulse 2s infinite; }
.status-success { color: #10b981; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.5} }

/* УСПЕХ */
.success-icon { font-size: 80px; animation: bounceIn 0.6s ease; }
@keyframes bounceIn { 0%{transform:scale(0)} 50%{transform:scale(1.15)} 100%{transform:scale(1)} }

/* СПИННЕР */
.spinner {
    width: 36px; height: 36px;
    border: 3px solid rgba(240,171,252,0.15);
    border-top-color: var(--accent-purple);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 16px auto;
}
@keyframes spin { to{transform:rotate(360deg)} }

/* ФУТЕР */
.footer {
    text-align: center;
    padding: 16px 0;
    font-size: 12px;
    color: var(--text-muted);
}
.footer a { color: var(--text-muted); text-decoration: none; }

@media (max-width: 400px) {
    .amount-grid { grid-template-columns: repeat(3, 1fr); }
}