/* CloudDrive - Modern Cloud Storage Theme */
:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --secondary: #764ba2;
    --accent: #f093fb;
    --dark: #1a202c;
    --gray-900: #1a202c;
    --gray-800: #2d3748;
    --gray-700: #4a5568;
    --gray-600: #718096;
    --gray-500: #a0aec0;
    --gray-400: #cbd5e0;
    --gray-300: #e2e8f0;
    --gray-200: #edf2f7;
    --gray-100: #f7fafc;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.logo svg {
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.nav-buttons {
    display: flex;
    gap: 10px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-large {
    padding: 15px 30px;
    font-size: 1.1rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--gray-700);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 20px 60px;
    max-width: 1200px;
    margin: 0 auto;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 50px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray-500);
}

.hero-image {
    flex: 1;
    position: relative;
    min-height: 400px;
}

.cloud-illustration {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    opacity: 0.3;
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: 20px;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    gap: 5px;
    animation: float 6s ease-in-out infinite;
}

.floating-card .file-icon {
    font-size: 2rem;
}

.floating-card span {
    font-weight: 600;
    color: var(--gray-800);
}

.floating-card small {
    color: var(--gray-500);
    font-size: 0.85rem;
}

.card-1 {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 5%;
    animation-delay: 2s;
}

.card-3 {
    bottom: 15%;
    left: 20%;
    animation-delay: 4s;
}

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

/* Features Section */
.features {
    padding: 100px 20px;
    background: var(--gray-100);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--gray-900);
}

.section-subtitle {
    text-align: center;
    color: var(--gray-600);
    font-size: 1.1rem;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--gray-900);
}

.feature-card p {
    color: var(--gray-600);
}

/* Pricing Section */
.pricing-preview {
    padding: 100px 20px;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    border: 2px solid var(--gray-200);
    text-align: center;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--primary);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.pricing-card .badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: var(--white);
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--gray-900);
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 30px;
}

.pricing-card .price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--gray-500);
}

.pricing-card ul {
    list-style: none;
    margin-bottom: 30px;
    text-align: left;
}

.pricing-card li {
    padding: 10px 0;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-200);
}

.pricing-card li:last-child {
    border-bottom: none;
}

/* CTA Section */
.cta {
    padding: 100px 20px;
    background: var(--gradient);
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 15px;
}

.cta p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.cta .btn-primary {
    background: var(--white);
    color: var(--primary);
}

.cta .btn-primary:hover {
    background: var(--gray-100);
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 80px 20px 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 15px;
}

.footer-brand .logo svg {
    color: var(--white);
}

.footer-brand p {
    color: var(--gray-500);
}

.footer-links h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    color: var(--gray-500);
    text-decoration: none;
    padding: 8px 0;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 30px;
    text-align: center;
}

/* Dashboard Styles */
.dashboard {
    display: flex;
    min-height: 100vh;
    padding-top: 70px;
}

.sidebar {
    width: 260px;
    background: var(--gray-900);
    padding: 30px 20px;
    color: var(--white);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 5px;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    color: var(--gray-400);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background: var(--primary);
    color: var(--white);
}

.storage-info {
    margin-top: 40px;
    padding: 20px;
    background: var(--gray-800);
    border-radius: 12px;
}

.storage-bar {
    height: 8px;
    background: var(--gray-700);
    border-radius: 4px;
    margin: 15px 0;
    overflow: hidden;
}

.storage-bar-fill {
    height: 100%;
    background: var(--gradient);
    border-radius: 4px;
}

.main-content {
    flex: 1;
    padding: 30px;
    background: var(--gray-100);
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--white);
    padding: 10px 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    width: 400px;
}

.search-bar input {
    border: none;
    outline: none;
    width: 100%;
    font-size: 1rem;
}

.files-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.file-card {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.file-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.file-card .icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.file-card .name {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 5px;
}

.file-card .meta {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* Login/Register Pages */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    padding: 20px;
}

.auth-card {
    background: var(--white);
    padding: 50px;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 450px;
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 10px;
    color: var(--gray-900);
}

.auth-card .subtitle {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 40px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--gray-300);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.auth-card .btn {
    width: 100%;
    padding: 15px;
    font-size: 1rem;
}

.auth-footer {
    text-align: center;
    margin-top: 30px;
    color: var(--gray-500);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

/* Responsive */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 120px;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        margin: 0 auto 30px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-image {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-buttons {
        display: none;
    }

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

    .hero-content h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .pricing-card.featured {
        transform: none;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .dashboard {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }
}