:root {
    /* Color Palette */
    --bg-dark: #0a0a0c;
    --bg-darker: #050506;
    --text-light: #f4f4f5;
    --text-muted: #a1a1aa;
    
    /* Neon/Electric Accents */
    --accent-primary: #8b5cf6; /* Electric Purple */
    --accent-secondary: #ec4899; /* Hot Pink */
    --accent-tertiary: #10b981; /* Neon Green */
    --accent-glow: rgba(139, 92, 246, 0.4);

    /* Gradients */
    --gradient-brand: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --gradient-dark: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-accent: 'Syne', sans-serif;
    
    /* Spacing & Utilities */
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --border-radius: 12px;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body.dark-theme {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: var(--font-heading);
    overflow-x: hidden;
    line-height: 1.6;
    cursor: none; /* Custom cursor */
}

/* Typography Utilities */
h1, h2, h3, h4, .kinetic-text {
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-weight: 900;
    line-height: 1.1;
}

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

.outline-text {
    color: transparent;
    -webkit-text-stroke: 1px var(--text-light);
}

/* Custom Cursor */
.cursor-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-primary);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: transform 0.1s ease;
}

.cursor-outline {
    width: 40px;
    height: 40px;
    border: 1px solid var(--accent-glow);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease, background-color 0.3s ease;
}

html:hover .cursor-outline {
    background-color: transparent;
}

/* Glassmorphism Panel Utilities */
.glass-panel {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
}

/* Navigation */
.nav-container {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-xl);
    z-index: 100;
    background: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
    font-family: var(--font-accent);
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pulse-icon {
    color: var(--accent-tertiary);
    animation: pulseIcon 2s infinite ease-in-out;
}

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

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    transition: color 0.3s;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background: var(--gradient-brand);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--accent-primary);
}

.btn-primary {
    background: var(--gradient-brand);
    color: var(--text-light);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 30px;
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: none; /* Let custom cursor handle hover state styling via JS */
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
    z-index: -1;
    transition: opacity 0.3s ease;
    opacity: 0;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover::before {
    opacity: 1;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 30px;
    height: 2px;
    background-color: var(--text-light);
    transition: 0.3s;
}

/* Sections Base */
section {
    padding: 100px var(--space-xl);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.section-header {
    margin-bottom: var(--space-xl);
}

.section-header h2 {
    font-size: 3.5rem;
    margin-bottom: var(--space-sm);
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.2rem;
}

/* Hero Section */
.hero {
    align-items: center;
    text-align: center;
    overflow: hidden;
    padding-top: 150px;
}

.hero-bg-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
    z-index: -1;
    filter: blur(80px);
    opacity: 0.6;
    animation: driftBackground 10s infinite alternate cubic-bezier(0.4, 0, 0.2, 1);
}

.kinetic-container {
    position: relative;
    z-index: 2;
}

.kinetic-text {
    display: flex;
    flex-direction: column;
    font-size: clamp(4rem, 10vw, 10rem);
    letter-spacing: -2px;
}

.kinetic-text span {
    display: block;
    transform: translateY(100px);
    opacity: 0;
    animation: slideUpFade 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.kinetic-text .line-1 { animation-delay: 0.1s; }
.kinetic-text .line-2 { animation-delay: 0.3s; margin-left: -10vw; text-align: left;}
.kinetic-text .line-3 { animation-delay: 0.5s; text-align: right;}
.kinetic-text .line-4 { animation-delay: 0.7s; font-family: var(--font-accent); font-style: italic;}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    opacity: 0;
    animation: fadeIn 1s 1.5s forwards;
}

.scroll-indicator p {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.scroll-line::before {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--accent-primary);
    animation: scrollLineDrop 2s cubic-bezier(0.7, 0, 0.3, 1) infinite;
}

/* Activity Banner (Marquee) */
.activity-banner {
    min-height: auto;
    padding: 20px 0;
    background: var(--accent-tertiary);
    color: var(--bg-dark);
    overflow: hidden;
    position: relative;
    transform: rotate(-2deg) scale(1.05);
    z-index: 10;
}

.marquee {
    display: flex;
    white-space: nowrap;
    font-family: var(--font-accent);
    font-weight: 800;
    font-size: 1.5rem;
    text-transform: uppercase;
    animation: marqueeScroll 20s linear infinite;
}

.marquee-item {
    padding: 0 2rem;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
}

.marquee-item .dot {
    width: 10px;
    height: 10px;
    background: var(--bg-dark);
    border-radius: 50%;
}

/* Base Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .mobile-menu-btn {
        display: flex;
    }
    section {
        padding: 80px var(--space-md);
    }
    .kinetic-text .line-2 { margin-left: 0; text-align: center;}
    .kinetic-text .line-3 { text-align: center;}
}

/* Timeline Schedule Section */
.schedule-section {
    background: var(--bg-darker);
    position: relative;
}

.timeline-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    border-left: 2px solid rgba(255, 255, 255, 0.1);
    padding-left: var(--space-xl);
    margin-top: var(--space-lg);
}

.timeline-item {
    position: relative;
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    transition: var(--transition-smooth);
    cursor: none; /* Let custom cursor handle hover */
    overflow: hidden;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -42px; /* aligns with the border-left of container */
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 2px;
    background: var(--accent-primary);
    transition: width 0.3s;
}

.timeline-item::after {
    content: '';
    position: absolute;
    left: -48px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg-darker);
    border: 2px solid var(--accent-primary);
    transition: background 0.3s;
}

.timeline-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-glow);
    transform: translateX(10px);
}

.timeline-item:hover::after {
    background: var(--accent-primary);
    box-shadow: 0 0 10px var(--accent-primary);
}

.time-slot {
    font-family: var(--font-accent);
    color: var(--accent-tertiary);
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: block;
}

.timeline-item h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.timeline-item p {
    color: var(--text-muted);
}

.tag-container {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.time-tag {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* AI Trainers Section */
.trainers-section {
    position: relative;
    z-index: 1;
}

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

.trainer-card {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 3/4;
    cursor: none;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.trainer-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(80%) contrast(1.2);
    transition: filter 0.5s;
}

.trainer-card:hover .trainer-img {
    filter: grayscale(0%) contrast(1);
}

.trainer-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--space-lg);
    background: linear-gradient(to top, rgba(5,5,6,0.95), transparent);
    transform: translateY(30%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.trainer-card:hover .trainer-info {
    transform: translateY(0);
}

.trainer-info h3 {
    font-size: 2rem;
    margin-bottom: 0.2rem;
}

.trainer-role {
    font-family: var(--font-accent);
    color: var(--accent-secondary);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 1rem;
    display: block;
}

.ai-recommendation {
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.9rem;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    margin-top: 1rem;
}

.trainer-card:hover .ai-recommendation {
    opacity: 1;
    transition-delay: 0.2s;
}

/* Join Section (App-like signup) */
.join-section {
    align-items: center;
    background: radial-gradient(circle at bottom, rgba(236, 72, 153, 0.1) 0%, var(--bg-dark) 50%);
}

.signup-container {
    width: 100%;
    max-width: 500px;
    position: relative;
    min-height: 400px;
    overflow: hidden;
}

.signup-step {
    position: absolute;
    top: var(--space-lg);
    left: var(--space-lg);
    right: var(--space-lg);
    opacity: 0;
    pointer-events: none;
    transform: translateX(20px);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.signup-step.active {
    position: relative;
    top: 0;
    left: 0;
    right: 0;
    opacity: 1;
    pointer-events: all;
    transform: translateX(0);
}

.signup-step h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.signup-step > p {
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.input-group {
    position: relative;
    margin-bottom: var(--space-lg);
}

.input-group input {
    width: 100%;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    padding: 1rem;
    color: var(--text-light);
    font-family: var(--font-heading);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.input-group input:focus {
    border-color: var(--accent-primary);
}

.input-group label {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: 0.2s ease all;
}

.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label {
    top: -0.5rem;
    left: 0.8rem;
    font-size: 0.8rem;
    background: var(--bg-dark);
    padding: 0 0.5rem;
    color: var(--accent-primary);
}

.continue-btn {
    width: 100%;
}

.plan-options {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.plan-card {
    flex: 1;
    padding: var(--space-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    text-align: center;
    cursor: none;
    transition: var(--transition-smooth);
    position: relative;
}

.plan-card h3 {
    margin-bottom: 0.5rem;
}

.plan-card .price {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-accent);
}

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

.plan-card.active-plan {
    border-color: var(--accent-secondary);
    background: rgba(236, 72, 153, 0.05);
}

.plan-card .badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-brand);
    color: white;
    font-size: 0.7rem;
    padding: 2px 10px;
    border-radius: 10px;
    text-transform: uppercase;
    font-weight: 700;
}

.form-actions {
    display: flex;
    gap: var(--space-md);
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-weight: 700;
    cursor: none;
    padding: 0.75rem 1.5rem;
    transition: color 0.3s;
}

.btn-text:hover {
    color: var(--text-light);
}

.success-content {
    text-align: center;
    padding: var(--space-lg) 0;
}

.success-icon {
    font-size: 4rem;
    color: var(--accent-tertiary);
    margin-bottom: 1rem;
    animation: scaleUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes scaleUp {
    from { transform: scale(0); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* Footer styling */
footer {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: var(--space-xl);
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .plan-options {
        flex-direction: column;
    }
    .timeline-container {
        padding-left: var(--space-md);
    }
    .timeline-item::before {
        left: -26px;
    }
    .timeline-item::after {
        left: -32px;
    }
    .footer-content {
        flex-direction: column;
    }
}