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

:root {
    /* Light Mode */
    --bg-primary-light: #ffffff;
    --bg-secondary-light: #f5f5f7;
    --text-primary-light: #1d1d1f;
    --text-secondary-light: #6e6e73;
    --border-light: rgba(0, 0, 0, 0.1);
    --glass-bg-light: rgba(255, 255, 255, 0.7);
    --glass-border-light: rgba(0, 0, 0, 0.1);
    
    /* Dark Mode */
    --bg-primary-dark: #0a0a0a;
    --bg-secondary-dark: #1a1a1a;
    --text-primary-dark: #f5f5f7;
    --text-secondary-dark: #a1a1a6;
    --border-dark: rgba(255, 255, 255, 0.1);
    --glass-bg-dark: rgba(26, 26, 26, 0.8);
    --glass-border-dark: rgba(255, 255, 255, 0.1);
    
    /* Accent Color (Logo Pink) */
    --accent-color: #ff2d92;
    --accent-hover: #ff4da3;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
}

[data-theme="light"] {
    --bg-primary: var(--bg-primary-light);
    --bg-secondary: var(--bg-secondary-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --border: var(--border-light);
    --glass-bg: var(--glass-bg-light);
    --glass-border: var(--glass-border-light);
}

[data-theme="dark"] {
    --bg-primary: var(--bg-primary-dark);
    --bg-secondary: var(--bg-secondary-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --border: var(--border-dark);
    --glass-bg: var(--glass-bg-dark);
    --glass-border: var(--glass-border-dark);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    position: relative;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.container {
    text-align: center;
    max-width: 1400px;
    width: 100%;
    position: relative;
    z-index: 1;
}

/* Logo */
.logo-container {
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease-out;
}

.logo {
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, #ff2d92 0%, #ff4da3 50%, #ff2d92 100%);
    border-radius: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4.5rem;
    font-weight: 900;
    color: #ffffff;
    line-height: 1;
    box-shadow: 
        0 8px 32px rgba(255, 45, 146, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset,
        0 -2px 8px rgba(0, 0, 0, 0.2) inset;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.logo > * {
    position: relative;
    z-index: 1;
    line-height: 1;
}

/* 3D Glossy Effect */
.logo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.1) 50%, transparent 100%);
    border-radius: 28px 28px 50% 50%;
    pointer-events: none;
}

/* Bottom shadow for depth */
.logo::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background: linear-gradient(0deg, rgba(0, 0, 0, 0.15) 0%, transparent 100%);
    border-radius: 0 0 28px 28px;
    pointer-events: none;
}

.logo:hover {
    transform: scale(1.08) rotate(3deg);
    box-shadow: 
        0 12px 48px rgba(255, 45, 146, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.15) inset,
        0 -2px 12px rgba(0, 0, 0, 0.25) inset;
}

/* Hero Section */
.hero {
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    font-weight: 400;
    margin-bottom: 3rem;
    color: var(--text-secondary);
}

/* Glass Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: 24px;
    padding: 2.5rem;
    margin: 2rem 0;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    animation: fadeInUp 0.8s ease-out;
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border);
}

.glass-card h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.glass-card p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* İstatistikler */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1.5rem;
    margin: 2.5rem 0;
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    border: 1px solid var(--border);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-color);
    box-shadow: var(--shadow-md);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-number {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Platform Cards */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin-top: 2.5rem;
}

.platform-card {
    background: var(--bg-secondary);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    border: 2px solid var(--border);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.platform-card:hover {
    transform: translateY(-12px);
    border-color: var(--accent-color);
    box-shadow: var(--shadow-lg);
}

.platform-card:hover::before {
    transform: scaleX(1);
}

.platform-card.highlighted {
    border-color: var(--accent-color);
    background: var(--bg-secondary);
    box-shadow: 0 0 30px rgba(255, 45, 146, 0.2);
}

.platform-card.highlighted::before {
    transform: scaleX(1);
}

.platform-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    display: block;
    transition: transform 0.3s ease;
}

.platform-card:hover .platform-icon {
    transform: scale(1.1) rotate(5deg);
}

.platform-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.platform-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.download-btn {
    width: 100%;
    padding: 1rem 1.5rem;
    background: var(--accent-color);
    border: none;
    border-radius: 12px;
    color: #ffffff;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.download-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.download-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 45, 146, 0.4);
}

.download-btn:hover::before {
    width: 300px;
    height: 300px;
}

.download-btn:active {
    transform: translateY(0);
}

/* Legal Links */
.legal-links {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.legal-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.legal-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

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

.legal-links a:hover::after {
    width: 100%;
}

/* Update Info */
.update-info {
    margin-top: 1.5rem;
}

.update-version {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.update-date {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.update-changelog {
    list-style: none;
    padding: 0;
    margin: 0;
}

.update-changelog li {
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border-left: 3px solid var(--accent-color);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    transition: all 0.3s ease;
}

.update-changelog li:hover {
    background: var(--bg-secondary);
    transform: translateX(5px);
    border-left-color: var(--accent-hover);
}

.update-changelog li::before {
    content: '✨ ';
    margin-right: 0.5rem;
}

/* Loading */
.loading-container {
    text-align: center;
    padding: 3rem 2rem;
}

.loading {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

.loading-text {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

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

/* Features Section */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
    list-style: none;
    padding: 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: var(--bg-secondary);
    transform: translateX(5px);
    border-color: var(--accent-color);
}

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

.feature-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
    .theme-toggle {
        top: 1rem;
        right: 1rem;
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }

    .logo {
        width: 100px;
        height: 100px;
        font-size: 3.5rem;
    }

    .glass-card {
        padding: 2rem 1.5rem;
        border-radius: 20px;
    }

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

    .stat-card {
        padding: 1.5rem 1rem;
    }

    .platform-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .platform-card {
        padding: 2rem 1.5rem;
    }

    .legal-links {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}