/* ========================================
   RobotDance.com - Production Styles
   ======================================== */

/* CSS Custom Properties */
:root {
    --color-bg: #0a0a0b;
    --color-bg-elevated: #141416;
    --color-bg-card: #1a1a1e;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);

    --color-text: #ffffff;
    --color-text-muted: #a1a1aa;
    --color-text-subtle: #71717a;

    --color-primary: #00FF88;
    --color-primary-dark: #00cc6d;
    --color-primary-glow: rgba(0, 255, 136, 0.3);

    --color-secondary: #7B61FF;
    --color-secondary-glow: rgba(123, 97, 255, 0.3);

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    --nav-height: 72px;
}

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

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

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Noise Overlay */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Section Base */
.section {
    padding: var(--spacing-4xl) 0;
    position: relative;
}

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

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: background-color var(--transition-base), backdrop-filter var(--transition-base);
}

.nav.scrolled {
    background-color: rgba(10, 10, 11, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
}

.logo-robot {
    color: var(--color-text);
}

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

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

.nav-links a:not(.btn) {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.nav-links a:not(.btn):hover {
    color: var(--color-text);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    padding: 0.75rem 1.5rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

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

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    box-shadow: 0 0 30px var(--color-primary-glow);
}

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

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

.btn-block {
    width: 100%;
}

.btn .arrow {
    transition: transform var(--transition-fast);
}

.btn:hover .arrow {
    transform: translateX(4px);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--nav-height);
    position: relative;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    max-width: 800px;
    height: 600px;
    background: radial-gradient(ellipse at center,
        var(--color-primary-glow) 0%,
        var(--color-secondary-glow) 30%,
        transparent 70%);
    filter: blur(80px);
    opacity: 0.6;
    pointer-events: none;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-2xl) 0;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    animation: fadeInDown 0.6s ease-out;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

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

/* ========================================
   Challenges Section
   ======================================== */
.challenges {
    background: var(--color-bg);
}

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

.challenge-card {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.challenge-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.challenge-card:hover .challenge-accent {
    opacity: 1;
}

.challenge-accent {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.challenge-status {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

.challenge-status.live {
    background: rgba(0, 255, 136, 0.15);
    color: var(--color-primary);
}

.challenge-status.upcoming {
    background: rgba(123, 97, 255, 0.15);
    color: var(--color-secondary);
}

.challenge-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.challenge-creator {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

.creator-handle {
    color: var(--color-primary);
}

.challenge-meta {
    display: flex;
    gap: var(--spacing-xl);
}

.meta-item {
    display: flex;
    flex-direction: column;
}

.meta-value {
    font-size: 1.25rem;
    font-weight: 700;
}

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

.upcoming-text {
    font-size: 0.875rem;
    color: var(--color-secondary);
    font-weight: 500;
}

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works {
    background: var(--color-bg-elevated);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.step-card {
    position: relative;
    padding: var(--spacing-2xl);
    text-align: center;
}

.step-number {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    font-size: 6rem;
    font-weight: 900;
    color: var(--color-border);
    line-height: 1;
    pointer-events: none;
    user-select: none;
}

.step-title {
    position: relative;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
}

.step-description {
    position: relative;
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

/* ========================================
   Creators Section
   ======================================== */
.creators-section {
    position: relative;
    overflow: hidden;
}

.creators-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
        rgba(123, 97, 255, 0.15) 0%,
        rgba(0, 255, 136, 0.1) 50%,
        rgba(123, 97, 255, 0.05) 100%);
}

.creators-content {
    position: relative;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.creators-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.creators-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-2xl);
}

.creators-subtitle .highlight {
    color: var(--color-primary);
    font-weight: 600;
}

/* ========================================
   Brands Section
   ======================================== */
.brands-section {
    background: var(--color-bg);
}

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

.pricing-card {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-base);
}

.pricing-card:hover {
    border-color: var(--color-border-hover);
}

.pricing-card.featured {
    border-color: var(--color-primary);
    box-shadow: 0 0 40px var(--color-primary-glow);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-bg);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-full);
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.pricing-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 800;
}

.price-plus {
    font-size: 1.5rem;
    color: var(--color-text-muted);
}

.pricing-features {
    flex: 1;
    margin-bottom: var(--spacing-xl);
}

.pricing-features li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 600;
}

/* ========================================
   Waitlist Section
   ======================================== */
.waitlist-section {
    background: var(--color-bg-elevated);
}

.waitlist-content {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.waitlist-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-2xl);
}

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

.form-group {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 400px;
    margin: 0 auto;
}

.form-input {
    flex: 1;
    padding: 0.875rem 1rem;
    font-family: inherit;
    font-size: 1rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: border-color var(--transition-fast);
}

.form-input::placeholder {
    color: var(--color-text-subtle);
}

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

.waitlist-note {
    font-size: 0.8125rem;
    color: var(--color-text-subtle);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--spacing-3xl) 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer .logo {
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    color: var(--color-text-subtle);
    font-size: 0.875rem;
}

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

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

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

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-2xl);
        gap: var(--spacing-lg);
        background: var(--color-bg);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-base), visibility var(--transition-base);
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
    }

    .nav-links a:not(.btn) {
        font-size: 1.25rem;
    }

    .nav-links .btn {
        width: 100%;
        justify-content: center;
    }

    .hamburger {
        display: flex;
    }

    .hero-stats {
        gap: var(--spacing-xl);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .form-group {
        flex-direction: column;
    }

    .form-group .btn {
        width: 100%;
    }

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

    .pricing-card.featured {
        order: -1;
    }
}

@media (max-width: 480px) {
    .section {
        padding: var(--spacing-3xl) 0;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

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

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

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

    html {
        scroll-behavior: auto;
    }
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
    outline: none;
}