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

:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --secondary: #22d3ee;
    --accent: #f472b6;
}

[data-theme="dark"] {
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --border: #2d3748;
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1a202c;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --gradient-start: #6366f1;
    --gradient-end: #8b5cf6;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    transition: all 0.3s ease;
    line-height: 1.6;
}

[dir="rtl"] body {
    font-family: 'Vazirmatn', 'Segoe UI', Tahoma, sans-serif;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 1rem 2rem;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    object-fit: contain;
}

.controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle,
.lang-select {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-toggle:hover,
.lang-select:hover {
    border-color: var(--primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    background: radial-gradient(ellipse at top, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.15;
    top: -200px;
    right: -200px;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.feature {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.feature-icon svg {
    width: 30px;
    height: 30px;
    fill: white;
}

.feature h3 {
    margin-bottom: 0.5rem;
}

.feature p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Download Section */
.download-section {
    padding: 6rem 2rem;
    background: var(--bg-secondary);
}

.download-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.platforms {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.platform-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.platform-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(99, 102, 241, 0.15);
    border-color: var(--primary);
}

.platform-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform-icon svg {
    width: 32px;
    height: 32px;
    fill: white;
}

.platform-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.platform-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.store-buttons {
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.store-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    white-space: nowrap;
    flex: 1;
    min-width: 120px;
}

.store-btn.primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
}

.store-btn.primary:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

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

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

.store-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
    flex-shrink: 0;
}

.direct-download {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
}

.direct-download:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

/* Footer */
footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: 3rem 2rem;
    text-align: center;
}

footer p {
    color: var(--text-secondary);
}

/* Animations */
@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

/* Responsive */
@media (max-width: 1024px) {
    .platforms {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .controls {
        width: 100%;
        justify-content: center;
    }

    .hero {
        padding: 7rem 1rem 3rem;
    }

    .platforms {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .store-buttons {
        flex-direction: row;
    }

    .store-btn {
        min-width: 80px;
        padding: 0.5rem 0.6rem;
        font-size: 0.75rem;
    }

    .store-btn svg {
        width: 14px;
        height: 14px;
    }

    .platform-card {
        padding: 1rem 0.75rem;
    }
}

@media (max-width: 480px) {
    .platforms {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .store-buttons {
        gap: 0.3rem;
    }

    .store-btn {
        min-width: 70px;
        padding: 0.4rem 0.5rem;
        font-size: 0.7rem;
    }

    .store-btn svg {
        width: 12px;
        height: 12px;
    }

    .platform-card {
        padding: 0.75rem 0.5rem;
    }

    .platform-icon {
        width: 50px;
        height: 50px;
        margin: 0 auto 0.75rem;
    }

    .platform-icon svg {
        width: 28px;
        height: 28px;
    }

    .platform-card h3 {
        font-size: 0.95rem;
        margin-bottom: 0.3rem;
    }

    .platform-card p {
        font-size: 0.75rem;
        margin-bottom: 0.75rem;
    }
}