/* ===== CSS Variables & Reset ===== */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-tg: #34ACE0;
    --accent-tg-dark: #0088CC;
    --accent-max: #7c3aed;
    --accent-max-dark: #5b21b6;
    --accent-promo: #f59e0b;
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-card: rgba(255, 255, 255, 0.1);
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow-tg: 0 0 60px rgba(52, 172, 224, 0.15);
    --shadow-glow-max: 0 0 60px rgba(124, 58, 237, 0.15);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Background Particles ===== */
.bg-particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat linear infinite;
}

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

/* ===== Container ===== */
.container {
    position: relative;
    z-index: 1;
    max-width: 860px;
    margin: 0 auto;
    padding: 40px 24px 60px;
}

/* ===== Header ===== */
.header {
    text-align: center;
    margin-bottom: 32px;
}

.logo-wrapper {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
}

.mascot-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--border-card);
    box-shadow: 0 0 40px rgba(52, 172, 224, 0.15), 0 8px 24px rgba(0, 0, 0, 0.4);
    animation: mascotEntry 0.8s var(--transition-bounce) both;
    animation-delay: 0.2s;
}

@keyframes mascotEntry {
    from {
        opacity: 0;
        transform: scale(0.5) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    animation: fadeUp 0.6s ease both;
    animation-delay: 0.3s;
}

.title-accent {
    background: linear-gradient(135deg, var(--accent-tg), #6ee7b7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-divider {
    color: var(--text-muted);
    margin: 0 4px;
}

.title-sub {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.65em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 560px;
    margin: 0 auto;
    animation: fadeUp 0.6s ease both;
    animation-delay: 0.45s;
}

.subtitle strong {
    color: var(--accent-promo);
    font-weight: 700;
}

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

/* ===== Promo Badge ===== */
.promo-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(245, 158, 11, 0.04));
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-sm);
    padding: 14px 24px;
    margin-bottom: 40px;
    animation: fadeUp 0.6s ease both;
    animation-delay: 0.55s;
}

.promo-icon {
    font-size: 1.4rem;
    animation: promoShake 2s ease-in-out infinite;
}

@keyframes promoShake {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-10deg); }
    75% { transform: rotate(10deg); }
}

.promo-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.promo-text strong {
    color: var(--accent-promo);
    font-weight: 700;
}

/* ===== Choose Section ===== */
.choose-section {
    text-align: center;
    margin-bottom: 48px;
    animation: fadeUp 0.6s ease both;
    animation-delay: 0.6s;
}

.choose-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.choose-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 32px;
}

/* ===== Cards Grid ===== */
.cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 700px;
    margin: 0 auto;
}

@media (max-width: 600px) {
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* ===== Card ===== */
.card {
    position: relative;
    display: block;
    text-decoration: none;
    color: inherit;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 36px 28px 32px;
    overflow: hidden;
    transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
    cursor: pointer;
}

.card:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.2);
}

.card-telegram:hover {
    box-shadow: var(--shadow-glow-tg);
    border-color: rgba(52, 172, 224, 0.3);
}

.card-max:hover {
    box-shadow: var(--shadow-glow-max);
    border-color: rgba(124, 58, 237, 0.3);
}

/* Card Glow effect */
.card-glow {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity var(--transition-smooth);
    pointer-events: none;
}

.card-telegram .card-glow {
    background: radial-gradient(circle at 50% 0%, rgba(52, 172, 224, 0.08) 0%, transparent 70%);
}

.card-max .card-glow {
    background: radial-gradient(circle at 50% 0%, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
}

.card:hover .card-glow {
    opacity: 1;
}

.card-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* Card Icon */
.card-icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: transform var(--transition-bounce);
}

.card:hover .card-icon-wrapper {
    transform: scale(1.1);
}

.card-icon-tg {
    background: linear-gradient(135deg, rgba(52, 172, 224, 0.15), rgba(52, 172, 224, 0.05));
    border: 1px solid rgba(52, 172, 224, 0.2);
}

.card-icon-max {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(124, 58, 237, 0.05));
    border: 1px solid rgba(124, 58, 237, 0.2);
}

.card-icon {
    width: 48px;
    height: 48px;
}

/* MAX Logo fallback */
.max-logo-circle {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent-max), var(--accent-max-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 12px rgba(124, 58, 237, 0.3);
}

.max-logo-text {
    font-size: 14px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 1px;
}

.max-logo-img {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    object-fit: contain;
}

/* Card Name & Description */
.card-name {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.card-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 24px;
}

/* Card Action Button */
.card-action {
    display: flex;
    align-items: center;
    gap: 8px;
    transition: gap var(--transition-smooth);
}

.card:hover .card-action {
    gap: 14px;
}

.card-btn {
    font-size: 0.95rem;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.card-telegram .card-btn {
    color: var(--accent-tg);
}

.card-max .card-btn {
    color: var(--accent-max);
}

.card-arrow {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-smooth);
}

.card-telegram .card-arrow {
    color: var(--accent-tg);
}

.card-max .card-arrow {
    color: var(--accent-max);
}

.card:hover .card-arrow {
    transform: translateX(4px);
}

/* ===== Features ===== */
.features {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 48px;
    animation: fadeUp 0.6s ease both;
    animation-delay: 0.75s;
}

.feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.feature:hover {
    border-color: var(--border-card);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.feature-text strong {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.feature-text span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-subtle);
    animation: fadeUp 0.6s ease both;
    animation-delay: 0.9s;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.footer-link a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ===== Responsive ===== */
@media (max-width: 600px) {
    .container {
        padding: 24px 16px 40px;
    }

    .title {
        font-size: 1.5rem;
    }

    .title-sub {
        display: block;
        margin-top: 4px;
    }

    .title-divider {
        display: none;
    }

    .subtitle {
        font-size: 0.95rem;
    }

    .mascot-img {
        width: 96px;
        height: 96px;
    }

    .card {
        padding: 28px 24px 24px;
    }

    .features {
        gap: 12px;
    }

    .feature {
        width: 100%;
    }

    .promo-badge {
        flex-direction: column;
        gap: 6px;
        text-align: center;
        padding: 12px 16px;
    }
}

/* ===== Entrance Animations for Cards ===== */
.card-telegram {
    animation: cardEnter 0.6s var(--transition-bounce) both;
    animation-delay: 0.5s;
}

.card-max {
    animation: cardEnter 0.6s var(--transition-bounce) both;
    animation-delay: 0.65s;
}

@keyframes cardEnter {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===== Focus Styles for Accessibility ===== */
.card:focus-visible {
    outline: 2px solid var(--accent-tg);
    outline-offset: 4px;
}

.card-max:focus-visible {
    outline-color: var(--accent-max);
}