/* 
 * RE//FORGE SF - Website Styles
 * Premium SF Tech × Real Estate Aesthetic
 */

/* ===========================
   ROOT VARIABLES & RESET
   =========================== */
:root {
    /* Colors - Dark theme with electric blue accents */
    --color-black: #000000;
    --color-charcoal: #1a1a1a;
    --color-dark-gray: #2a2a2a;
    --color-gray: #4a4a4a;
    --color-light-gray: #8a8a8a;
    --color-white: #ffffff;
    --color-electric-blue: #00D9FF;
    --color-blue-glow: rgba(0, 217, 255, 0.3);
    --color-blue-dark: #0099CC;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Borders */
    --border-radius: 8px;
    --border-radius-lg: 16px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

/* ===========================
   TYPOGRAPHY
   =========================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--spacing-sm);
}

.lead {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-light-gray);
    max-width: 900px;
    margin: 0 auto var(--spacing-md);
}

.highlight-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-electric-blue);
    text-align: center;
    margin-top: var(--spacing-md);
}

/* ===========================
   LAYOUT
   =========================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--color-electric-blue), transparent);
    margin: var(--spacing-md) auto 0;
}

/* ===========================
   NAVIGATION
   =========================== */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-dark-gray);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-white);
    text-decoration: none;
    letter-spacing: 0.02em;
    font-family: var(--font-primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--color-white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
}

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

.btn-nav {
    background: var(--color-electric-blue);
    color: var(--color-black) !important;
    padding: 0.5rem 1.5rem !important;
    font-weight: 600;
}

.btn-nav:hover {
    background: var(--color-blue-dark);
    transform: translateY(-2px);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===========================
   HERO SECTION
   =========================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: calc(var(--spacing-xl) + 60px) 0 var(--spacing-xl);
    text-align: center;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: 100%;
    height: 100%;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: 0;
    pointer-events: none;
}

/* Support for iframe videos */
.hero-video iframe {
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.circuit-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(90deg, var(--color-dark-gray) 1px, transparent 1px),
        linear-gradient(0deg, var(--color-dark-gray) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.gradient-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(0, 0, 0, 0.7) 0%,
        rgba(0, 0, 0, 0.5) 100%
    );
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1000px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-electric-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 2rem);
    color: var(--color-electric-blue);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-light-gray);
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
    line-height: 1.8;
}

.hero-meta {
    color: var(--color-light-gray);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-meta i {
    color: var(--color-electric-blue);
}

.separator {
    color: var(--color-gray);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    font-size: 1rem;
}

.btn-primary {
    background: var(--color-electric-blue);
    color: var(--color-black);
}

.btn-primary:hover {
    background: var(--color-blue-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px var(--color-blue-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-electric-blue);
}

.btn-secondary:hover {
    background: var(--color-electric-blue);
    color: var(--color-black);
    transform: translateY(-3px);
}

.btn-outline {
    background: transparent;
    color: var(--color-electric-blue);
    border-color: var(--color-electric-blue);
    padding: 1rem 3rem;
    font-size: 1.1rem;
}

.btn-outline:hover {
    background: var(--color-electric-blue);
    color: var(--color-black);
}

.btn-primary-large,
.btn-secondary-large {
    padding: 1.25rem 3rem;
    font-size: 1.2rem;
}

.btn-primary-large {
    background: var(--color-electric-blue);
    color: var(--color-black);
}

.btn-secondary-large {
    background: transparent;
    border-color: var(--color-electric-blue);
    color: var(--color-white);
}

.btn-card {
    background: var(--color-dark-gray);
    color: var(--color-electric-blue);
    padding: 0.75rem 1.5rem;
    margin-top: auto;
}

.btn-card:hover {
    background: var(--color-electric-blue);
    color: var(--color-black);
}

/* ===========================
   EMAIL SIGNUP
   =========================== */
.email-signup,
.email-signup-large {
    display: flex;
    gap: var(--spacing-xs);
    max-width: 500px;
    margin: 0 auto;
}

.email-input,
.email-input-large {
    flex: 1;
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 2px solid var(--color-dark-gray);
    background: var(--color-charcoal);
    color: var(--color-white);
    font-size: 1rem;
}

.email-input:focus,
.email-input-large:focus {
    outline: none;
    border-color: var(--color-electric-blue);
}

.btn-email,
.btn-email-large {
    background: var(--color-electric-blue);
    color: var(--color-black);
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-email:hover,
.btn-email-large:hover {
    background: var(--color-blue-dark);
}

/* ===========================
   SCROLL INDICATOR
   =========================== */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-light-gray);
    font-size: 0.9rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ===========================
   WHAT IS SECTION
   =========================== */
.what-is {
    background: var(--color-charcoal);
}

.focus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.focus-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-dark-gray);
    border-radius: var(--border-radius);
    border: 1px solid transparent;
    transition: var(--transition);
}

.focus-item:hover {
    border-color: var(--color-electric-blue);
    transform: translateY(-5px);
}

.focus-item i {
    font-size: 2rem;
    color: var(--color-electric-blue);
}

.focus-item span {
    font-weight: 500;
}

/* ===========================
   WHO FOR SECTION
   =========================== */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.audience-card {
    background: var(--color-charcoal);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--color-dark-gray);
    transition: var(--transition);
}

.audience-card:hover {
    border-color: var(--color-electric-blue);
    transform: translateY(-8px);
    box-shadow: 0 15px 40px var(--color-blue-glow);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-electric-blue), var(--color-blue-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.card-icon i {
    font-size: 1.75rem;
    color: var(--color-black);
}

.audience-card h3 {
    color: var(--color-electric-blue);
    margin-bottom: var(--spacing-sm);
}

.audience-card p {
    color: var(--color-light-gray);
}

/* ===========================
   TRACKS OVERVIEW
   =========================== */
.tracks-overview {
    background: var(--color-charcoal);
}

.tracks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.track-card {
    background: var(--color-dark-gray);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.track-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-electric-blue), var(--color-blue-dark));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.track-card:hover::before {
    transform: scaleX(1);
}

.track-card:hover {
    border-color: var(--color-electric-blue);
    transform: translateY(-5px);
}

.track-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-electric-blue);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.track-card h3 {
    margin-bottom: var(--spacing-sm);
}

.track-card p {
    color: var(--color-light-gray);
    margin-bottom: var(--spacing-md);
}

.track-link {
    color: var(--color-electric-blue);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.track-link:hover {
    gap: 1rem;
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* ===========================
   HOW IT WORKS
   =========================== */
.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-electric-blue), var(--color-blue-dark));
}

.timeline-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.timeline-marker {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-electric-blue), var(--color-blue-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-black);
    flex-shrink: 0;
    z-index: 1;
}

.timeline-content {
    background: var(--color-charcoal);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--color-dark-gray);
    flex: 1;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--color-electric-blue);
    transform: translateX(10px);
}

.timeline-content h3 {
    color: var(--color-electric-blue);
}

.timeline-content p {
    color: var(--color-light-gray);
    margin: 0;
}

/* ===========================
   PARTICIPATE SECTION
   =========================== */
.participate-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.participate-card {
    background: var(--color-charcoal);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--color-dark-gray);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.participate-card:hover {
    border-color: var(--color-electric-blue);
    transform: translateY(-8px);
    box-shadow: 0 15px 40px var(--color-blue-glow);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.card-header i {
    font-size: 2rem;
    color: var(--color-electric-blue);
}

.card-header h3 {
    margin: 0;
}

.participate-card p {
    color: var(--color-light-gray);
    flex: 1;
    margin-bottom: var(--spacing-md);
}

/* ===========================
   COLLABORATORS
   =========================== */
.collaborators {
    background: var(--color-charcoal);
    text-align: center;
}

.logos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.logo-item {
    background: var(--color-dark-gray);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
}

.logo-item:hover {
    border-color: var(--color-electric-blue);
    transform: scale(1.05);
}

.collaborators-note {
    color: var(--color-light-gray);
    font-style: italic;
}

/* ===========================
   CTA SECTION
   =========================== */
.cta-section {
    background: linear-gradient(135deg, var(--color-charcoal) 0%, var(--color-black) 100%);
    padding: var(--spacing-xl) 0;
    text-align: center;
    border-top: 2px solid var(--color-electric-blue);
    border-bottom: 2px solid var(--color-electric-blue);
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.email-signup-large {
    max-width: 600px;
}

/* ===========================
   FOOTER
   =========================== */
.main-footer {
    background: var(--color-charcoal);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid var(--color-dark-gray);
}

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

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

.footer-section p {
    color: var(--color-light-gray);
}

.footer-meta {
    font-size: 0.9rem;
    color: var(--color-gray);
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul a {
    color: var(--color-light-gray);
    text-decoration: none;
    transition: var(--transition);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-dark-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--color-electric-blue);
    color: var(--color-black);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-dark-gray);
    color: var(--color-gray);
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.98);
        flex-direction: column;
        padding: var(--spacing-md);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .nav-links.active {
        transform: translateX(0);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-cta,
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .email-signup,
    .email-signup-large {
        flex-direction: column;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-marker {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .focus-grid,
    .audience-grid,
    .tracks-grid,
    .participate-grid {
        grid-template-columns: 1fr;
    }
}