/* ============================================
   BioQL Website - Professional Styles
   ============================================ */

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

:root {
    /* Colors - Quantum Theme */
    --color-bg-dark: #0A0E27;
    --color-bg-darker: #060915;
    --color-bg-card: #12172E;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B4B9D2;
    --color-text-muted: #6B7280;

    /* Quantum Gradient Colors */
    --color-quantum-blue: #00D4FF;
    --color-quantum-purple: #9D4EDD;
    --color-quantum-magenta: #FF006E;
    --color-bio-green: #06FFA5;
    --color-accent-cyan: #00FFF5;
    --color-accent-gold: #FFD700;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-quantum-blue) 0%, var(--color-quantum-purple) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--color-quantum-purple) 0%, var(--color-quantum-magenta) 100%);
    --gradient-accent: linear-gradient(135deg, var(--color-bio-green) 0%, var(--color-accent-cyan) 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-code: 'Fira Code', 'Courier New', monospace;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

body {
    font-family: var(--font-primary);
    background: var(--color-bg-darker);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm) 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-brand .logo img {
    background: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-menu a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-normal);
}

.nav-menu a:hover {
    color: var(--color-quantum-blue);
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================
   Buttons
   ============================================ */

.btn-primary, .btn-secondary, .btn-large {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-quantum-blue);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(157, 78, 221, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 50%);
    overflow: hidden;
}

.hero-bg-main {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.25;
    filter: blur(1px);
}

.hero-bg-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    mix-blend-mode: screen;
    pointer-events: none;
}

.overlay-1 {
    top: 0;
    left: 0;
    opacity: 0.15;
    animation: floatOverlay1 20s ease-in-out infinite;
}

.overlay-2 {
    top: 0;
    right: 0;
    opacity: 0.12;
    animation: floatOverlay2 25s ease-in-out infinite;
}

@keyframes floatOverlay1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(20px, -20px) scale(1.05); }
}

@keyframes floatOverlay2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-20px, 20px) scale(1.05); }
}

.hero-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
        rgba(10, 10, 15, 0.85) 0%,
        rgba(10, 10, 15, 0.7) 50%,
        rgba(10, 10, 15, 0.85) 100%);
    pointer-events: none;
}

.quantum-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20% 30%, rgba(0, 212, 255, 0.5), transparent),
        radial-gradient(2px 2px at 60% 70%, rgba(157, 78, 221, 0.5), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(6, 255, 165, 0.5), transparent);
    background-size: 200% 200%;
    animation: particleFloat 20s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { background-position: 0% 0%; }
    50% { background-position: 100% 100%; }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.badge-icon {
    font-size: 1.25rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.stat {
    text-align: center;
}

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

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

/* Code Window */
.code-window {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.code-header {
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.code-dots {
    display: flex;
    gap: var(--spacing-xs);
}

.code-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-text-muted);
}

.code-dots span:nth-child(1) { background: #FF5F56; }
.code-dots span:nth-child(2) { background: #FFBD2E; }
.code-dots span:nth-child(3) { background: #27C93F; }

.code-title {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.code-content {
    padding: var(--spacing-lg);
    font-family: var(--font-code);
    font-size: 0.875rem;
    line-height: 1.8;
    overflow-x: auto;
}

.code-content code {
    color: var(--color-text-primary);
}

.keyword { color: #FF79C6; }
.string { color: #50FA7B; }
.number { color: #BD93F9; }
.comment { color: #6272A4; }

/* ============================================
   Features Section
   ============================================ */

.features {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-dark);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: rgba(20, 20, 30, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right, rgba(0, 212, 255, 0.1), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-quantum-blue);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3),
                0 0 20px rgba(157, 78, 221, 0.2);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

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

.feature-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.feature-list {
    list-style: none;
}

.feature-list li {
    color: var(--color-text-secondary);
    padding: 0.5rem 0;
    font-size: 0.9375rem;
}

/* ============================================
   Modules Section
   ============================================ */

.modules {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-darker);
}

.modules-showcase {
    display: grid;
    gap: var(--spacing-lg);
}

.module-card {
    background: rgba(20, 20, 30, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--spacing-lg);
    align-items: start;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.module-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at bottom left, rgba(157, 78, 221, 0.1), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.module-card:hover {
    border-color: var(--color-quantum-purple);
    box-shadow: 0 10px 40px rgba(157, 78, 221, 0.3),
                0 0 20px rgba(0, 212, 255, 0.2);
}

.module-card:hover::before {
    opacity: 1;
}

.module-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.3;
}

.module-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.module-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.module-metrics {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

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

.metric-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-quantum-blue);
}

.module-code {
    grid-column: 3;
    background: var(--color-bg-darker);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-family: var(--font-code);
    font-size: 0.8125rem;
    line-height: 1.6;
    min-width: 400px;
}

/* ============================================
   Backends Section
   ============================================ */

.backends {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-dark);
    position: relative;
}

.backends-hero-image {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

.quantum-chip-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(1.2) contrast(1.1);
}

.backends .container {
    position: relative;
    z-index: 1;
}

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

.backend-card {
    background: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.backend-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-quantum-blue);
}

.backend-logo {
    margin-bottom: var(--spacing-md);
}

.logo-placeholder {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.5rem;
    color: white;
}

.logo-placeholder.ibm { background: linear-gradient(135deg, #0062FF 0%, #0043CE 100%); }
.logo-placeholder.ionq { background: linear-gradient(135deg, #00C1B5 0%, #008C82 100%); }
.logo-placeholder.google { background: linear-gradient(135deg, #4285F4 0%, #0F9D58 100%); }
.logo-placeholder.azure { background: linear-gradient(135deg, #0078D4 0%, #005A9E 100%); }
.logo-placeholder.aws { background: linear-gradient(135deg, #FF9900 0%, #EC7211 100%); }
.logo-placeholder.simulator { background: linear-gradient(135deg, #9D4EDD 0%, #7B2CBF 100%); }

.backend-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.backend-specs {
    margin-bottom: var(--spacing-md);
}

.spec {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.spec-value {
    color: var(--color-text-primary);
    font-weight: 600;
}

.backend-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-text-muted);
}

.status-dot.active {
    background: var(--color-bio-green);
    box-shadow: 0 0 8px var(--color-bio-green);
}

/* ============================================
   Pricing Section
   ============================================ */

.pricing {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-darker);
}

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

.pricing-card {
    background: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    transition: all var(--transition-normal);
}

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-quantum-blue);
}

.pricing-card.featured {
    border-color: var(--color-quantum-blue);
    box-shadow: var(--shadow-glow);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

.currency {
    font-size: 1.5rem;
    color: var(--color-text-secondary);
}

.amount {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.pricing-features li {
    padding: 0.75rem 0;
    color: var(--color-text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.btn-pricing {
    width: 100%;
    text-align: center;
    padding: 1rem;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all var(--transition-normal);
    display: block;
}

.btn-pricing:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.pricing-card:not(.featured) .btn-pricing {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ============================================
   Demo Section
   ============================================ */

.demo {
    position: relative;
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-dark);
    overflow: hidden;
}

.demo-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.demo-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15;
    filter: blur(2px);
}

.demo-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg,
        rgba(10, 10, 15, 0.95) 0%,
        rgba(10, 10, 15, 0.85) 50%,
        rgba(10, 10, 15, 0.95) 100%);
}

.demo .container {
    position: relative;
    z-index: 1;
}

.demo-container {
    max-width: 900px;
    margin: 0 auto;
}

.demo-interface {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.demo-tabs {
    display: flex;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.demo-tab {
    flex: 1;
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.demo-tab.active {
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-quantum-blue);
    border-bottom: 2px solid var(--color-quantum-blue);
}

.demo-content {
    padding: var(--spacing-xl);
}

.demo-input label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.demo-input textarea {
    width: 100%;
    background: var(--color-bg-darker);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--color-text-primary);
    font-family: var(--font-code);
    resize: vertical;
}

.demo-settings {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.setting label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
    font-weight: 600;
}

.setting select {
    width: 100%;
    background: var(--color-bg-darker);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    color: var(--color-text-primary);
}

.btn-demo {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-normal);
    margin-bottom: var(--spacing-md);
}

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

.demo-output {
    background: var(--color-bg-darker);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.output-header {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.output-time {
    color: var(--color-bio-green);
    font-size: 0.875rem;
}

.demo-output pre {
    padding: var(--spacing-md);
    font-family: var(--font-code);
    font-size: 0.875rem;
    overflow-x: auto;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: var(--color-bg-darker);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: var(--spacing-md);
}

.footer-brand .logo img {
    background: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.footer-col h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

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

.footer-col ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-col a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-col a:hover {
    color: var(--color-quantum-blue);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-normal);
}

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

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .module-card {
        grid-template-columns: 1fr;
    }

    .module-code {
        grid-column: 1;
        min-width: auto;
    }

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

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

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

    .features-grid,
    .backends-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .nav-menu {
        display: none;
    }

    .demo-settings {
        grid-template-columns: 1fr;
    }

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

/* ============================================
   Animations
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.module-card,
.backend-card,
.pricing-card {
    animation: fadeIn 0.6s ease-out;
}

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