/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ============================================
   COLOR SYSTEM - Dark Theme (Option A)
   ============================================ */
:root {
    /* Background Colors */
    --bg-primary: #000000;
    --bg-secondary: #000000;
    --bg-surface: #0a0a0a;
    --bg-surface-hover: #0f0f0f;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    
    /* Accent Colors */
    --accent-primary: #107AEF;
    --accent-primary-hover: #2a8fff;
    --accent-primary-active: #0d6bd6;
    
    /* Border Colors */
    --border-primary: #2a2a2a;
    --border-secondary: #333333;
    --border-hover: #3a3a3a;
    
    /* Interactive States */
    --interactive-hover: rgba(16, 122, 239, 0.1);
    --interactive-active: rgba(16, 122, 239, 0.2);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* ============================================
   BODY & TYPOGRAPHY
   ============================================ */
html {
    width: 100%;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
header {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    background-color: var(--bg-primary);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(0, 0, 0, 0.8);
    transition: border-color var(--transition-base);
    width: 100%;
    max-width: 100%;
    margin: 0;
}

header:hover {
    border-bottom-color: var(--border-secondary);
}

/* Logo Styles */
.logo {
    display: flex;
    align-items: center;
}

.logo a {
    display: inline-block;
    transition: transform var(--transition-base);
    text-decoration: none;
}

.logo a:hover {
    transform: scale(1.05);
}

.logo a:active {
    transform: scale(0.98);
}

.logo-img {
    height: 48px;
    width: auto;
    display: block;
    transition: opacity var(--transition-base);
}

.logo a:hover .logo-img {
    opacity: 0.9;
}

/* Navigation Styles */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.main-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-base);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-primary);
    transition: width var(--transition-base);
}

.main-nav a:hover {
    color: var(--text-primary);
}

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

.main-nav a:active {
    color: var(--accent-primary);
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 101;
    position: relative;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
    display: block;
}

/* Don't transform hamburger to X - we have a separate close button */
.mobile-menu-toggle[aria-expanded="true"] {
    opacity: 0.6;
}

/* Zcal Link - Accent Color Styling */
.zcal-link {
    background-color: var(--accent-primary);
    color: var(--text-primary) !important;
    padding: var(--spacing-xs) var(--spacing-md) !important;
    border-radius: var(--radius-md);
    font-weight: 600 !important;
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(16, 122, 239, 0.3);
}

.zcal-link::after {
    display: none;
}

.zcal-link:hover {
    background-color: var(--accent-primary-hover);
    color: var(--text-primary) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 122, 239, 0.4);
}

.zcal-link:active {
    background-color: var(--accent-primary-active);
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(16, 122, 239, 0.3);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
main {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

.hero {
    position: relative;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.6s ease-out;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-mesh {
    position: absolute;
    width: 50%;
    left: -5%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 0;
    opacity: 0.5;
    pointer-events: none;
    overflow: hidden;
}

.mesh-image {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 0 20px rgba(16, 122, 239, 0.3));
    animation: meshColorShift 8s ease-in-out infinite, meshGlow 4s ease-in-out infinite;
    position: relative;
}

.hero-content-wrapper {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    text-shadow: 
        2px 2px 8px rgba(0, 0, 0, 0.8),
        0 0 20px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
    text-shadow: 
        1px 1px 6px rgba(0, 0, 0, 0.8),
        0 0 15px rgba(0, 0, 0, 0.5);
}

.content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.content p {
    font-size: clamp(1rem, 1.5vw, 1.1rem);
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

.content a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-base);
}

.content a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-primary);
    transition: width var(--transition-base);
}

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

.content a:hover::after {
    width: 100%;
}

/* ============================================
   LEGAL PAGES
   ============================================ */
.legal-page {
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 0.6s ease-out;
}

.legal-page h1 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: 700;
}

.last-updated {
    color: var(--text-tertiary);
    font-style: italic;
    margin-bottom: var(--spacing-xl);
    font-size: 0.9rem;
}

.legal-page section {
    margin-bottom: var(--spacing-xl);
}

.legal-page h2 {
    font-size: clamp(1.5rem, 3vw, 1.8rem);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 600;
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-primary);
}

.legal-page p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--text-secondary);
}

.legal-page a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-base);
}

.legal-page a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-primary);
    transition: width var(--transition-base);
}

.legal-page a:hover {
    color: var(--accent-primary-hover);
}

.legal-page a:hover::after {
    width: 100%;
}

.legal-page ul {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

.legal-page li {
    margin-bottom: var(--spacing-sm);
}

.legal-page li strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--border-primary);
    margin-top: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

footer p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

footer nav {
    display: flex;
    gap: var(--spacing-md);
}

footer nav a {
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-base);
}

footer nav a:hover {
    color: var(--text-secondary);
}

footer nav a::after {
    background-color: var(--text-secondary);
}

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

@keyframes meshColorShift {
    0%, 100% {
        filter: drop-shadow(0 0 20px rgba(16, 122, 239, 0.3)) 
                hue-rotate(0deg) 
                brightness(1);
    }
    25% {
        filter: drop-shadow(0 0 25px rgba(16, 122, 239, 0.5)) 
                hue-rotate(10deg) 
                brightness(1.1);
    }
    50% {
        filter: drop-shadow(0 0 30px rgba(42, 143, 255, 0.4)) 
                hue-rotate(20deg) 
                brightness(1.15);
    }
    75% {
        filter: drop-shadow(0 0 25px rgba(16, 122, 239, 0.5)) 
                hue-rotate(10deg) 
                brightness(1.1);
    }
}

@keyframes meshGlow {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.7;
    }
}


/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }
    
    header {
        flex-wrap: nowrap;
        padding: var(--spacing-sm) var(--spacing-md);
        margin: 0;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .logo-img {
        height: 40px;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--bg-surface);
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        padding: var(--spacing-lg);
        padding-top: 60px;
        gap: var(--spacing-md);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.5);
        transition: right var(--transition-base);
        z-index: 100;
        overflow-y: auto;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .main-nav a {
        width: 100%;
        padding: var(--spacing-sm);
        font-size: 1rem;
        border-bottom: 1px solid var(--border-primary);
        margin-top: 0;
    }
    
    .main-nav a:first-of-type {
        margin-top: var(--spacing-sm);
    }
    
    .main-nav a::after {
        display: none;
    }
    
    .main-nav a:hover {
        color: var(--accent-primary);
        background-color: var(--bg-surface-hover);
        border-radius: var(--radius-sm);
    }
    
    .zcal-link {
        width: 100%;
        text-align: center;
        padding: var(--spacing-sm) var(--spacing-md) !important;
        margin-top: var(--spacing-sm);
    }
    
    /* Overlay when menu is open */
    .main-nav.active::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.7);
        z-index: -1;
        backdrop-filter: blur(4px);
    }
    
    footer {
        flex-direction: column;
        text-align: center;
        align-items: center;
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    footer nav {
        flex-direction: column;
        width: 100%;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .hero-mesh {
        width: 80%;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        opacity: 0.4;
    }
    
    .hero-content-wrapper {
        padding: var(--spacing-md);
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .legal-page {
        padding: var(--spacing-md);
    }
    
    .legal-page h1 {
        font-size: 2rem;
    }
    
    .content {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .logo-img {
        height: 36px;
    }
    
    .main-nav {
        width: 100%;
        right: -100%;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
        margin: 0;
    }
    
    header {
        padding: var(--spacing-sm) var(--spacing-sm);
        margin: 0;
    }
    
    main {
        padding: var(--spacing-lg) 0;
    }
    
    .hero {
        min-height: 300px;
    }
    
    .hero-mesh {
        width: 90%;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        opacity: 0.3;
    }
    
    .hero-content-wrapper {
        padding: var(--spacing-sm);
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .content {
        padding: var(--spacing-sm);
    }
    
    .legal-page {
        padding: var(--spacing-sm);
    }
}

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

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}