/* ET Ducky Web App - Dark Theme with Blue/Purple Gradient */

:root {
    /* Color Palette - Inspired by the logo */
    --primary-blue: #00B4DB;
    --primary-purple: #6B3FA0;
    --dark-bg: #0A0E1A;
    --card-bg: #151A2B;
    --card-hover: #1A2033;
    --border-color: #2A3348;
    --text-primary: #E8EBF0;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00B4DB 0%, #0083B0 100%);
    --gradient-accent: linear-gradient(135deg, #6B3FA0 0%, #8B5CF6 100%);
    --gradient-hero: linear-gradient(135deg, #00B4DB 0%, #6B3FA0 100%);
    --gradient-card: linear-gradient(180deg, #1A2033 0%, #151A2B 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(0, 180, 219, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    background: rgba(21, 26, 43, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.logo {
    width: 40px;
    height: 40px;
    filter: drop-shadow(0 0 8px rgba(0, 180, 219, 0.5));
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(0, 180, 219, 0.1);
}

.nav-link.active {
    color: var(--primary-blue);
    font-weight: 500;
}

#auth-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

#user-menu {
    position: relative;
}

#user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
}

.dropdown {
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    display: none;
    overflow: hidden;
}

.dropdown.show {
    display: block;
}

.dropdown a {
    display: block;
    padding: var(--spacing-sm);
    color: var(--text-primary);
    text-decoration: none;
    transition: background var(--transition-fast);
}

.dropdown a:hover {
    background: var(--card-hover);
}

.dropdown hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-xs) 0;
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    border: none;
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: rgba(0, 180, 219, 0.1);
    border-color: var(--primary-blue);
}

.btn-large {
    padding: 0.875rem 2rem;
    font-size: 1.0625rem;
}

.btn-full {
    width: 100%;
}

.btn-icon {
    padding: 0.5rem;
    background: transparent;
    border: none;
}

/* Page Management */
.page {
    display: none;
    min-height: calc(100vh - 80px);
}

.page.active {
    display: block;
}

/* Hero Section */
.hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.gradient-text {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.hero-note {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.hero-image {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 1s ease;
}

.hero-logo {
    width: 80%;
    max-width: 400px;
    filter: drop-shadow(0 0 40px rgba(0, 180, 219, 0.4));
    animation: float 6s ease-in-out infinite;
}

.circuit-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, transparent 40%, var(--dark-bg) 100%);
    pointer-events: none;
}

/* Features Preview */
.features-preview {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

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

/* CTA Section */
.cta-section {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.pricing-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    position: relative;
    transition: all var(--transition-base);
}

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-glow);
}

.pricing-card.featured {
    border-color: var(--primary-blue);
    box-shadow: 0 0 30px rgba(0, 180, 219, 0.2);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-period {
    color: var(--text-muted);
    font-size: 1rem;
}

.pricing-features {
    margin-bottom: var(--spacing-lg);
}

.pricing-note {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-size: 0.9375rem;
}

.pricing-features ul {
    list-style: none;
}

.pricing-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.dashboard-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.dashboard-card h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Settings */
.settings-grid {
    display: grid;
    gap: var(--spacing-lg);
    max-width: 800px;
}

.settings-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.settings-card h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.form-group input {
    width: 100%;
    padding: 0.625rem;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 180, 219, 0.1);
}

/* Features Detailed */
.features-detailed {
    display: grid;
    gap: var(--spacing-xl);
}

.feature-block {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.feature-block h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.feature-block ul {
    list-style: none;
    padding-left: 0;
}

.feature-block li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--text-secondary);
}

.feature-block li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

/* Footer */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

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

.footer-section p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Loading State */
.loading {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-image {
        order: -1;
    }
    
    .nav-menu {
        gap: var(--spacing-sm);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}