/* Modern CSS for SmartPick Support - 2025 Latest Technology */

/* CSS Variables and Custom Properties */
:root {
    /* Color System - Dynamic Gradients */
    --gradient-primary: linear-gradient(135deg, #1565C0 0%, #6A1B9A 100%);
    --gradient-secondary: linear-gradient(135deg, #00ACC1 0%, #5E35B1 100%);
    --gradient-accent: linear-gradient(135deg, #FF6B6B 0%, #FFE66D 100%);
    --gradient-success: linear-gradient(135deg, #00C853 0%, #64DD17 100%);
    --gradient-warning: linear-gradient(135deg, #FF6F00 0%, #FFB300 100%);
    
    /* Base Colors */
    --color-bg: #0a0a0a;
    --color-surface: rgba(255, 255, 255, 0.05);
    --color-glass: rgba(255, 255, 255, 0.1);
    --color-text: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-tertiary: rgba(255, 255, 255, 0.5);
    
    /* Glassmorphism */
    --backdrop-blur: 20px;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    /* Spacing System */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Typography Scale */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 2rem;
    --font-4xl: 2.5rem;
    --font-5xl: 3rem;
    
    /* Animation System */
    --animation-duration: 0.3s;
    --animation-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --animation-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 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 30px rgba(21, 101, 192, 0.5);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Selection Styles */
::selection {
    background: var(--gradient-primary);
    color: white;
    background-clip: text;
    -webkit-background-clip: text;
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #1565C0, #6A1B9A);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #1976D2, #7B1FA2);
}

/* Particle Canvas Background */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.5;
}

/* Loader Styles */
.loader {
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease-out;
}

.loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-text {
    color: var(--color-text-secondary);
    margin-top: var(--space-md);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* Glass Header */
.glass-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--backdrop-blur));
    -webkit-backdrop-filter: blur(var(--backdrop-blur));
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: all var(--animation-duration) var(--animation-smooth);
}

.glass-header.scrolled {
    background: rgba(10, 10, 10, 0.8);
    box-shadow: var(--shadow-lg);
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    max-width: 1400px;
    margin: 0 auto;
}

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

.brand-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-title {
    font-size: var(--font-xl);
    font-weight: 700;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}

.nav-menu {
    display: none;
    gap: var(--space-lg);
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
    }
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--space-sm) var(--space-md);
    border-radius: 8px;
    transition: all var(--animation-duration) var(--animation-smooth);
    position: relative;
}

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

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: var(--space-md);
    right: var(--space-md);
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.nav-icon {
    font-size: var(--font-lg);
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all var(--animation-duration) var(--animation-smooth);
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
}

.nav-toggle:hover {
    background: var(--color-surface);
}

.burger-line {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--animation-duration) var(--animation-smooth);
}

.nav-toggle.active .burger-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

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

.nav-toggle.active .burger-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(var(--backdrop-blur));
    -webkit-backdrop-filter: blur(var(--backdrop-blur));
    border-bottom: 1px solid var(--glass-border);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--animation-duration) var(--animation-smooth);
    z-index: 999;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.mobile-menu-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: 12px;
    transition: all var(--animation-duration) var(--animation-smooth);
}

.mobile-menu-link:hover {
    background: var(--color-surface);
    color: var(--color-text);
}

.menu-arrow {
    margin-left: auto;
    opacity: 0.5;
}

/* Hero Section */
.hero-section {
    padding: calc(80px + var(--space-3xl)) var(--space-xl) var(--space-3xl);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 600px;
    text-align: center;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: var(--font-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.8s ease-out 0.1s backwards;
}

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

.hero-description {
    font-size: var(--font-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 0.8s ease-out 0.3s backwards;
}

.stat-card {
    padding: var(--space-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: all var(--animation-duration) var(--animation-smooth);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

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

.stat-label {
    font-size: var(--font-sm);
    color: var(--color-text-secondary);
}

/* Hero Visual */
.hero-visual {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    max-width: 800px;
    max-height: 800px;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    width: 80px;
    height: 80px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: float 6s ease-in-out infinite;
    animation-delay: var(--delay);
}

.floating-card:nth-child(1) { top: 10%; left: 10%; }
.floating-card:nth-child(2) { top: 20%; right: 15%; }
.floating-card:nth-child(3) { bottom: 30%; left: 20%; }
.floating-card:nth-child(4) { bottom: 20%; right: 25%; }
.floating-card:nth-child(5) { top: 40%; left: 40%; }
.floating-card:nth-child(6) { top: 60%; right: 35%; }

.card-number {
    font-size: var(--font-2xl);
    font-weight: 700;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(5deg); }
    66% { transform: translateY(10px) rotate(-3deg); }
}

/* Main Content */
.main-content {
    padding: var(--space-2xl) var(--space-xl);
    max-width: 1400px;
    margin: 0 auto;
}

/* Content Sections */
.content-section {
    margin-bottom: var(--space-3xl);
    animation: fadeIn 0.8s ease-out;
}

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

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: var(--font-lg);
    color: var(--color-text-secondary);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.feature-card {
    padding: var(--space-2xl);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    transition: all var(--animation-duration) var(--animation-smooth);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--animation-duration) var(--animation-smooth);
    z-index: -1;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(21, 101, 192, 0.3);
}

.feature-card:hover::before {
    opacity: 0.05;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.feature-title {
    font-size: var(--font-xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* Steps Container */
.steps-container {
    display: grid;
    gap: var(--space-2xl);
}

.step-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-xl);
    padding: var(--space-2xl);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    transition: all var(--animation-duration) var(--animation-smooth);
}

.step-card:hover {
    background: var(--color-surface);
    transform: translateX(8px);
}

.step-number {
    font-size: var(--font-3xl);
    font-weight: 800;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}

.step-title {
    font-size: var(--font-xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.step-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.step-list {
    list-style: none;
    display: grid;
    gap: var(--space-sm);
}

.step-list li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm);
}

.list-icon {
    font-size: var(--font-lg);
}

/* Step Visual */
.step-visual {
    margin-top: var(--space-lg);
}

.mini-grid {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.mini-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    font-weight: 600;
    transition: all var(--animation-duration) var(--animation-smooth);
}

.mini-number.selected {
    background: var(--gradient-primary);
    border: none;
    color: white;
    transform: scale(1.1);
}

/* Demo Button */
.demo-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--animation-duration) var(--animation-smooth);
}

.demo-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(21, 101, 192, 0.3);
}

.save-demo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    font-weight: 500;
}

/* AI Features */
.ai-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.ai-card {
    padding: var(--space-2xl);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    position: relative;
    overflow: hidden;
}

.gradient-border {
    border: 2px solid transparent;
    background: linear-gradient(var(--color-bg), var(--color-bg)) padding-box,
                var(--gradient-primary) border-box;
}

.ai-icon {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-3xl);
}

.ai-pulse {
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: pulse-expand 2s ease-out infinite;
}

@keyframes pulse-expand {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.5); opacity: 0; }
}

.ai-stats {
    display: flex;
    gap: var(--space-xl);
    margin-top: var(--space-lg);
}

.ai-stat {
    text-align: center;
}

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

/* Frequency Bars */
.frequency-bars {
    display: flex;
    align-items: flex-end;
    gap: var(--space-sm);
    height: 80px;
    margin-top: var(--space-lg);
}

.freq-bar {
    flex: 1;
    height: var(--height);
    background: var(--gradient-primary);
    border-radius: 4px 4px 0 0;
    animation: grow-bar 1s ease-out backwards;
}

.freq-bar:nth-child(1) { animation-delay: 0.1s; }
.freq-bar:nth-child(2) { animation-delay: 0.2s; }
.freq-bar:nth-child(3) { animation-delay: 0.3s; }
.freq-bar:nth-child(4) { animation-delay: 0.4s; }
.freq-bar:nth-child(5) { animation-delay: 0.5s; }

@keyframes grow-bar {
    from { height: 0; }
}

/* Optimization Visual */
.optimization-visual {
    position: relative;
    height: 100px;
    margin-top: var(--space-lg);
}

.opt-node {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.opt-node:nth-child(1) { top: 0; left: 20%; }
.opt-node:nth-child(2) { top: 50%; left: 50%; animation-delay: 0.3s; }
.opt-node:nth-child(3) { bottom: 0; right: 20%; animation-delay: 0.6s; }

.opt-connection {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cpath d='M20,10 Q50,50 80,90' stroke='%231565C0' stroke-width='1' fill='none' opacity='0.3'/%3E%3C/svg%3E") no-repeat center;
    background-size: contain;
}

/* FAQ Section */
.faq-container {
    display: grid;
    gap: var(--space-md);
}

.faq-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--animation-duration) var(--animation-smooth);
}

.faq-item.active {
    background: var(--color-surface);
}

.faq-question {
    width: 100%;
    padding: var(--space-lg);
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-align: left;
    font-size: var(--font-base);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--animation-duration) var(--animation-smooth);
}

.faq-question:hover {
    background: var(--color-surface);
}

.faq-toggle {
    margin-left: auto;
    font-size: var(--font-xl);
    transition: transform var(--animation-duration) var(--animation-smooth);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--animation-duration) var(--animation-smooth);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--space-lg) var(--space-lg);
}

.faq-answer p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.faq-answer ul {
    list-style: none;
    padding-left: var(--space-lg);
}

.faq-answer li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

.faq-answer li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-text-tertiary);
}

/* CTA Section */
.cta-section {
    padding: var(--space-3xl) var(--space-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: 32px;
    border: 1px solid var(--glass-border);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(21, 101, 192, 0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
}

.cta-description {
    font-size: var(--font-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-2xl);
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all var(--animation-duration) var(--animation-smooth);
}

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

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(21, 101, 192, 0.3);
}

.secondary-button {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 2px solid var(--glass-border);
    color: var(--color-text);
}

.secondary-button:hover {
    background: var(--color-surface);
    transform: translateY(-2px);
}

.button-icon {
    width: 20px;
    height: 20px;
}

/* Modern Footer */
.modern-footer {
    margin-top: var(--space-3xl);
    padding: var(--space-3xl) var(--space-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

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

.footer-logo {
    font-size: var(--font-2xl);
    font-weight: 800;
    margin-bottom: var(--space-sm);
}

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

.footer-tagline {
    color: var(--color-text-secondary);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-2xl);
}

.footer-column h4 {
    font-size: var(--font-base);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.footer-column a {
    display: block;
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--space-xs) 0;
    transition: color var(--animation-duration) var(--animation-smooth);
}

.footer-column a:hover {
    color: var(--color-text);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--glass-border);
    color: var(--color-text-tertiary);
    font-size: var(--font-sm);
}

.footer-update {
    margin-top: var(--space-xs);
}

/* Scroll Top Button */
.scroll-top-button {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--animation-duration) var(--animation-smooth);
    z-index: 100;
    box-shadow: 0 10px 30px rgba(21, 101, 192, 0.3);
}

.scroll-top-button.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-top-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 40px rgba(21, 101, 192, 0.4);
}

.scroll-top-button svg {
    width: 24px;
    height: 24px;
    color: white;
}

/* Cursor Effects */
.cursor-dot {
    width: 8px;
    height: 8px;
    background: var(--gradient-primary);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 10000;
    transition: transform 0.1s ease-out;
    mix-blend-mode: screen;
}

.cursor-outline {
    width: 40px;
    height: 40px;
    border: 2px solid rgba(21, 101, 192, 0.5);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: all 0.15s ease-out;
}

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

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

/* Utility Classes */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --space-3xl: 3rem;
        --font-5xl: 2.5rem;
        --font-4xl: 2rem;
        --font-3xl: 1.75rem;
    }
    
    .hero-section {
        min-height: 80vh;
    }
    
    .floating-card {
        width: 60px;
        height: 60px;
    }
    
    .features-grid,
    .ai-features {
        grid-template-columns: 1fr;
    }
    
    .step-card {
        grid-template-columns: 1fr;
    }
    
    .step-number {
        font-size: var(--font-2xl);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: light) {
    :root {
        --color-bg: #ffffff;
        --color-text: #0a0a0a;
        --color-text-secondary: rgba(0, 0, 0, 0.7);
        --color-text-tertiary: rgba(0, 0, 0, 0.5);
        --color-surface: rgba(0, 0, 0, 0.05);
        --color-glass: rgba(0, 0, 0, 0.1);
        --glass-bg: rgba(255, 255, 255, 0.8);
        --glass-border: rgba(0, 0, 0, 0.1);
    }
    
    .animated-grid {
        background-image: 
            linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    }
    
    body::before {
        background: 
            radial-gradient(circle at 20% 80%, rgba(21, 101, 192, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 80% 20%, rgba(106, 27, 154, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 40% 40%, rgba(94, 53, 177, 0.05) 0%, transparent 50%);
    }
}