/* Google Material Design - Clean & Modern */

/* Google Colors */
:root {
    --google-blue: #4285F4;
    --google-red: #EA4335;
    --google-yellow: #FBBC04;
    --google-green: #34A853;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --border-color: #dadce0;
}

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

body {
    font-family: 'Google Sans', 'Roboto', -apple-system, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 24px;
    font-weight: 500;
    color: var(--text-primary);
}

.logo-text {
    letter-spacing: -0.5px;
}

.logo-highlight {
    color: var(--google-blue);
    font-weight: 700;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
    padding: 8px 0;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--google-blue);
    transition: width 0.3s ease;
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    padding: 8px;
}

.mobile-menu {
    display: none;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    flex-direction: column;
    gap: 16px;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 0;
}

/* Hero Section */
.hero {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    padding: 120px 24px;
    text-align: center;
}

.hero-container {
    max-width: 800px;
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: 56px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-weight: 400;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    font-family: 'Google Sans', sans-serif;
}

.btn-primary {
    background-color: var(--google-blue);
    color: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
}

.btn-primary:hover {
    background-color: #1a73e8;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.3);
    transform: translateY(-1px);
}

.btn-icon {
    font-size: 18px;
}

/* Tools Section */
.tools {
    padding: 80px 0;
    background: var(--bg-secondary);
    min-height: calc(100vh - 200px);
}

.section-title {
    font-size: 40px;
    font-weight: 500;
    text-align: center;
    margin-bottom: 48px;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

/* Cards */
.card {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 32px 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--google-blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.card-blue::before {
    background: var(--google-blue);
}

.card-red::before {
    background: var(--google-red);
}

.card-yellow::before {
    background: var(--google-yellow);
}

.card-green::before {
    background: var(--google-green);
}

.card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

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

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    background: var(--bg-secondary);
}

.card-blue .card-icon {
    background: rgba(66, 133, 244, 0.1);
    color: var(--google-blue);
}

.card-red .card-icon {
    background: rgba(234, 67, 53, 0.1);
    color: var(--google-red);
}

.card-yellow .card-icon {
    background: rgba(251, 188, 4, 0.1);
    color: var(--google-yellow);
}

.card-green .card-icon {
    background: rgba(52, 168, 83, 0.1);
    color: var(--google-green);
}

.card-icon .material-icons {
    font-size: 28px;
}

.card-title {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.card-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.card-link {
    color: var(--google-blue);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: gap 0.2s;
}

.card-link:hover {
    gap: 4px;
}

/* Stats Section */
.stats {
    padding: 80px 0;
    background: var(--bg-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 48px;
    text-align: center;
}

.stat-item {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

.stat-item:nth-child(1) { animation-delay: 0.1s; }
.stat-item:nth-child(2) { animation-delay: 0.2s; }
.stat-item:nth-child(3) { animation-delay: 0.3s; }
.stat-item:nth-child(4) { animation-delay: 0.4s; }

.stat-number {
    font-size: 48px;
    font-weight: 500;
    color: var(--google-blue);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 400;
}

/* About Section */
.about {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    margin-top: 48px;
    align-items: start;
}

.about-content h3 {
    font-size: 28px;
    font-weight: 500;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.about-content p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature {
    display: flex;
    align-items: start;
    gap: 16px;
    padding: 20px;
    background: var(--bg-primary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.feature:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateX(8px);
}

.feature-icon {
    color: var(--google-blue);
    font-size: 32px;
}

.feature h4 {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.feature p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 32px 0;
}

.footer-bottom {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero {
        min-height: calc(100vh - 250px);
        padding: 80px 24px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 24px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 40px;
    }
}

/* Smooth transitions */
* {
    transition: color 0.2s, background-color 0.2s;
}