/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light Mode Colors */
    --primary-blue: #1e3a8a;
    --primary-teal: #06b6d4;
    --secondary-purple: #8b5cf6;
    --secondary-pink: #ec4899;
    --accent-orange: #f59e0b;
    --success-green: #10b981;
    
    /* Light Mode Backgrounds & Text */
    --bg-primary: #fdfdfd;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #64748b;
    --text-muted: #9ca3af;
    
    /* Light Mode Glass Effects */
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Common Colors */
    --border-color: rgba(100, 116, 139, 0.2);
    --hover-bg: rgba(6, 182, 212, 0.05);
    
    /* Fonts */
    --font-headings: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --container-max-width: 1200px;
    --section-padding: 5rem 0;
    --border-radius: 1rem;
    --border-radius-lg: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-glass: var(--glass-shadow);
}

/* Dark Mode Colors */
[data-theme="dark"] {
    /* Dark Mode Backgrounds & Text */
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    
    /* Dark Mode Glass Effects */
    --glass-bg: rgba(55, 65, 81, 0.8);
    --glass-border: rgba(75, 85, 99, 0.3);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
    
    /* Dark Mode Specific */
    --border-color: rgba(75, 85, 99, 0.3);
    --hover-bg: rgba(6, 182, 212, 0.1);
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    transition: all 0.3s ease;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

/* Ensure header uses theme-appropriate colors consistently */
[data-theme="dark"] .header {
    background: var(--glass-bg) !important;
    border-bottom: 1px solid var(--glass-border) !important;
}

[data-theme="light"] .header {
    background: var(--glass-bg) !important;
    border-bottom: 1px solid var(--glass-border) !important;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    min-height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo {
    font-family: var(--font-headings);
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-teal);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        var(--primary-blue) 0%, 
        var(--primary-teal) 35%, 
        var(--secondary-purple) 70%, 
        var(--secondary-pink) 100%);
    opacity: 0.03;
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    animation: floating 20s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding-top: 100px;
}

.hero-title {
    font-family: var(--font-headings);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal), var(--secondary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Search Container */
.search-container {
    position: relative;
    max-width: 500px;
    margin: 0 auto 4rem;
}

.search-input {
    width: 100%;
    padding: 1rem 3.5rem 1rem 1.5rem;
    font-size: 1rem;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-glass);
    transition: all 0.3s ease;
    outline: none;
}

.search-input:focus {
    border-color: var(--primary-teal);
    box-shadow: var(--shadow-glass), 0 0 0 4px var(--hover-bg);
}

.search-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
    border: none;
    border-radius: 8px;
    padding: 0.75rem;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-btn:hover {
    transform: translateY(-50%) scale(1.05);
    box-shadow: var(--shadow-md);
}

/* Featured Apps */
.featured-apps {
    margin-top: 3rem;
}

.featured-apps h3 {
    font-family: var(--font-headings);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 600px;
    margin: 0 auto;
}

.featured-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.featured-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glass);
    background: var(--bg-tertiary);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.featured-card h4 {
    font-family: var(--font-headings);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

/* Categories Section */
.categories {
    padding: var(--section-padding);
    background: linear-gradient(180deg, 
        var(--glass-bg) 0%, 
        var(--bg-tertiary) 100%);
}

.section-title {
    font-family: var(--font-headings);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.categories-grid {
    display: grid;
    gap: 4rem;
}

.category-section {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-glass);
}

.category-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.category-header h3 {
    font-family: var(--font-headings);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.category-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.app-card {
    background: var(--bg-tertiary);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.app-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    background: var(--bg-tertiary);
}

.app-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.app-card h4 {
    font-family: var(--font-headings);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.app-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.app-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.tag {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.launch-btn {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.launch-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--primary-teal), var(--secondary-purple));
}

.launch-btn.coming-soon {
    background: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.7;
}

.launch-btn.coming-soon:hover {
    transform: none;
    box-shadow: none;
    background: var(--text-secondary);
}

/* How It Works */
.how-it-works {
    padding: var(--section-padding);
    background: linear-gradient(135deg, 
        var(--glass-bg) 0%, 
        var(--glass-bg) 100%);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.step {
    text-align: center;
    padding: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--secondary-purple), var(--secondary-pink));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-md);
}

.step h3 {
    font-family: var(--font-headings);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.step p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    font-family: var(--font-headings);
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section h3 {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary-teal), var(--secondary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--primary-teal);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--glass-bg);
        backdrop-filter: blur(10px);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 2rem;
        transition: left 0.3s ease;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-content {
        padding-top: 120px;
        padding-bottom: 2rem;
    }

    .search-container {
        width: 100%;
        max-width: 100%;
        margin: 2rem auto;
    }

    .search-input {
        font-size: 1rem;
        padding: 0.75rem 1rem;
    }

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

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

    .category-section {
        margin-bottom: 3rem;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .nav-brand {
        gap: 0.5rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    .tagline {
        display: none;
    }

    .hero-title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .search-input {
        font-size: 0.875rem;
        padding: 0.75rem 1rem;
    }

    .app-card {
        padding: 1.25rem;
    }

    .app-tags {
        flex-wrap: wrap;
    }

    .tag {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
        margin: 0.25rem;
    }

    .launch-btn {
        width: 100%;
        margin-top: 1rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    position: fixed;
    top: 50%;
    right: 2rem;
    transform: translateY(-50%);
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    padding: 0.5rem;
    box-shadow: var(--shadow-glass);
    transition: all 0.3s ease;
}

.dark-mode-toggle:hover {
    transform: translateY(-50%) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.toggle-btn {
    background: none;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
    color: white;
    box-shadow: var(--shadow-md);
}

.toggle-btn:hover {
    transform: rotate(180deg);
    box-shadow: var(--shadow-lg);
}

@media (max-width: 768px) {
    .dark-mode-toggle {
        position: fixed;
        top: auto;
        bottom: 2rem;
        right: 1rem;
        transform: none;
    }
    
    .dark-mode-toggle:hover {
        transform: scale(1.05);
    }
}