/* ===== CSS Variables ===== */
:root {
    --tg-theme-bg-color: #17212b;
    --tg-theme-secondary-bg-color: #232e3c;
    --tg-theme-text-color: #f5f5f5;
    --tg-theme-hint-color: #708499;
    --tg-theme-link-color: #6ab2f2;
    --tg-theme-button-color: #5288c1;
    --tg-theme-button-text-color: #ffffff;
    --tg-accent-color: #2aabee;
    --tg-success-color: #31b545;
    --tg-error-color: #e53935;
    --tg-warning-color: #ffa726;
    --card-bg: #1e2c3a;
    --card-border: #2d3f50;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-spotify: linear-gradient(135deg, #1db954 0%, #1ed760 100%);
    --gradient-chatgpt: linear-gradient(135deg, #10a37f 0%, #1a7f64 100%);
    --gradient-fortnite: linear-gradient(135deg, #9d4edd 0%, #7b2cbf 100%);
    --gradient-telegram: linear-gradient(135deg, #2aabee 0%, #229ed9 100%);
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Header ===== */
.header {
    background: var(--tg-theme-secondary-bg-color);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--card-border);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--tg-theme-text-color);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-telegram);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: var(--tg-theme-hint-color);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

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

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 20px 60px;
    background: radial-gradient(ellipse at top, rgba(42, 171, 238, 0.15) 0%, transparent 50%);
}

.hero-content {
    max-width: 700px;
}

.hero-badge {
    display: inline-block;
    background: rgba(42, 171, 238, 0.2);
    color: var(--tg-accent-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 24px;
    border: 1px solid rgba(42, 171, 238, 0.3);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, #a8d8ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--tg-theme-hint-color);
    margin-bottom: 40px;
}

/* ===== CTA Button ===== */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--gradient-telegram);
    color: white;
    padding: 18px 40px;
    border-radius: 12px;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(42, 171, 238, 0.4);
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(42, 171, 238, 0.5);
}

.cta-button svg {
    width: 24px;
    height: 24px;
}

/* ===== Products Section ===== */
.products {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.section-title p {
    color: var(--tg-theme-hint-color);
    font-size: 1.1rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

/* ===== Product Card ===== */
.product-card {
    background: var(--card-bg);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--card-border);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.product-header {
    padding: 30px;
    position: relative;
}

.product-header.spotify {
    background: var(--gradient-spotify);
}

.product-header.chatgpt {
    background: var(--gradient-chatgpt);
}

.product-header.fortnite {
    background: var(--gradient-fortnite);
}

.product-header.telegram {
    background: var(--gradient-telegram);
}

.product-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.product-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.product-body {
    padding: 25px 30px 30px;
}

.product-description {
    color: var(--tg-theme-hint-color);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.price-tag {
    display: flex;
    align-items: baseline;
    gap: 5px;
    margin-bottom: 20px;
}

.price-from {
    color: var(--tg-theme-hint-color);
    font-size: 0.9rem;
}

.price-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--tg-accent-color);
}

.price-currency {
    color: var(--tg-theme-hint-color);
    font-size: 1rem;
}

.product-features {
    list-style: none;
    margin-bottom: 25px;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--tg-theme-hint-color);
    font-size: 0.9rem;
}

.product-features li::before {
    content: "✓";
    color: var(--tg-success-color);
    font-weight: bold;
}

.product-button {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 10px;
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.product-button:hover {
    background: var(--tg-theme-button-color);
}

/* ===== Features Section ===== */
.features {
    padding: 80px 0;
    background: var(--tg-theme-secondary-bg-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.feature-item {
    text-align: center;
    padding: 30px;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.feature-item p {
    color: var(--tg-theme-hint-color);
    font-size: 0.95rem;
}

/* ===== Footer ===== */
.footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--card-border);
}

.footer p {
    color: var(--tg-theme-hint-color);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 20px;
}

.footer-links a {
    color: var(--tg-theme-hint-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* ===== Payment Pages ===== */
.payment-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: var(--tg-theme-bg-color);
}

.payment-container {
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.payment-card {
    background: var(--card-bg);
    border-radius: 24px;
    padding: 50px 40px;
    border: 1px solid var(--card-border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* ===== Loading Animation ===== */
.loader-container {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 30px;
}

.loader-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--card-border);
    border-top-color: var(--tg-accent-color);
    animation: spin 1s linear infinite;
    position: absolute;
    top: 0;
    left: 0;
}

.loader-circle.success {
    border-color: var(--tg-success-color);
    border-top-color: var(--tg-success-color);
    animation: none;
}

.loader-circle.error {
    border-color: var(--tg-error-color);
    border-top-color: var(--tg-error-color);
    animation: none;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== Checkmark Animation ===== */
.checkmark-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.checkmark-container.show {
    opacity: 1;
}

.checkmark {
    width: 60px;
    height: 60px;
    stroke: var(--tg-success-color);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}

.checkmark-circle {
    stroke-dasharray: 166;
    stroke-dashoffset: 166;
    animation: stroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.checkmark-check {
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.4s forwards;
}

@keyframes stroke {
    100% { stroke-dashoffset: 0; }
}

/* ===== Cross Animation ===== */
.cross-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.cross-container.show {
    opacity: 1;
}

.cross {
    width: 60px;
    height: 60px;
    stroke: var(--tg-error-color);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}

.cross-circle {
    stroke-dasharray: 166;
    stroke-dashoffset: 166;
    animation: stroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.cross-line {
    stroke-dasharray: 30;
    stroke-dashoffset: 30;
    animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.4s forwards;
}

/* ===== Payment Status Text ===== */
.payment-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.payment-title.success {
    color: var(--tg-success-color);
}

.payment-title.error {
    color: var(--tg-error-color);
}

.payment-message {
    color: var(--tg-theme-hint-color);
    font-size: 1rem;
    margin-bottom: 30px;
    line-height: 1.6;
}

.redirect-text {
    color: var(--tg-theme-hint-color);
    font-size: 0.9rem;
    margin-top: 20px;
}

.redirect-countdown {
    color: var(--tg-accent-color);
    font-weight: 600;
}

/* ===== Payment Button ===== */
.payment-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px 30px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.payment-button.primary {
    background: var(--gradient-telegram);
    color: white;
}

.payment-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(42, 171, 238, 0.4);
}

.payment-button.secondary {
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    margin-top: 12px;
}

.payment-button.secondary:hover {
    background: var(--tg-theme-button-color);
}

/* ===== Particles Background ===== */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: -1;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--tg-accent-color);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100vh) scale(1);
        opacity: 0;
    }
}

/* ===== Confetti Animation ===== */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 100;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    opacity: 0;
}

@keyframes confetti-fall {
    0% {
        transform: translateY(-100%) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

/* ===== Mobile Responsive ===== */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav-links {
        gap: 20px;
    }

    .hero {
        padding: 120px 20px 60px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .cta-button {
        padding: 16px 30px;
        font-size: 1rem;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .payment-card {
        padding: 40px 30px;
    }

    .payment-title {
        font-size: 1.5rem;
    }
}

/* ===== Telegram Icon SVG ===== */
.tg-icon {
    fill: white;
}

/* ===== Pulse Animation for Button ===== */
.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 20px rgba(42, 171, 238, 0.4);
    }
    50% {
        box-shadow: 0 4px 40px rgba(42, 171, 238, 0.6);
    }
    100% {
        box-shadow: 0 4px 20px rgba(42, 171, 238, 0.4);
    }
}

/* ===== Hidden utility ===== */
.hidden {
    display: none !important;
}

/* ===== Warning Color ===== */
.payment-title.warning {
    color: var(--tg-warning-color);
}

.payment-title.default {
    color: var(--tg-theme-text-color);
}

/* ===== Info Icon Animation ===== */
.info-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.info-container.show {
    opacity: 1;
}

/* ===== Fade In Animation ===== */
.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Scale In Animation ===== */
.scale-in {
    animation: scaleIn 0.5s ease forwards;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}