/* ============================================
   SkipCoin Website - Professional Dark Theme
   Redesigned for a slick, modern look
   ============================================ */

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

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Primary dark theme - extracted from header image tones */
    --bg-body: #07080c;
    --bg-primary: #0c0e14;
    --bg-secondary: #11141c;
    --bg-card: #151922;
    --bg-card-hover: #1a1f2b;
    --bg-elevated: #1e2330;
    
    /* Accent colors - gold/amber from coin imagery */
    --accent-primary: #d4a428;
    --accent-primary-hover: #e6b630;
    --accent-primary-dim: #b8942e;
    --accent-glow: rgba(212, 164, 40, 0.15);
    --accent-glow-strong: rgba(212, 164, 40, 0.25);
    
    /* Secondary accents */
    --accent-blue: #5b9cf5;
    --accent-blue-hover: #79b0ff;
    --accent-green: #4ade80;
    --accent-orange: #f59e0b;
    
    /* Text hierarchy */
    --text-primary: #f1f1f3;
    --text-secondary: #a3a8b8;
    --text-muted: #6b7280;
    --text-on-accent: #0c0e14;
    
    /* Borders & surfaces */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-default: rgba(255, 255, 255, 0.1);
    --border-accent: rgba(212, 164, 40, 0.3);
    --border-accent-hover: rgba(212, 164, 40, 0.5);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);
    
    /* Typography */
    --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    
    /* Sizing */
    --max-width: 1100px;
    --max-width-narrow: 900px;
    
    /* Spacing scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ============================================
   Base Styles
   ============================================ */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ============================================
   Hero Section - Full Header Image
   ============================================ */
.hero {
    width: 100%;
    background-color: var(--bg-primary);
    position: relative;
}

.hero-image-wrapper {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-body) 100%);
}

.hero-image {
    width: 100%;
    max-width: 1400px;
    height: auto;
    display: block;
    object-fit: contain;
    object-position: center;
}

/* Gradient fade at bottom of hero for seamless transition */
.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to bottom, transparent, var(--bg-body));
    pointer-events: none;
}

/* ============================================
   Layout & Container
   ============================================ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

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

.section {
    padding: var(--space-12) 0;
}

/* ============================================
   Card Components
   ============================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    max-width: var(--max-width-narrow);
    margin: 0 auto;
    transition: all var(--transition-base);
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-md);
}

.card-glow {
    position: relative;
}

.card-glow::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    background: linear-gradient(135deg, var(--accent-primary) 0%, transparent 50%, var(--accent-primary-dim) 100%);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card-glow:hover::before {
    opacity: 0.15;
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
}

.card-icon {
    font-size: 1.5rem;
    line-height: 1;
}

.card-header h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent-primary);
    letter-spacing: -0.02em;
}

.card-body p {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    font-size: 1rem;
}

.card-body p:last-child {
    margin-bottom: 0;
}

/* ============================================
   Contract Address Section
   ============================================ */
.card-contract {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(212, 164, 40, 0.03) 100%);
}

.contract-wrapper {
    margin-top: var(--space-2);
}

.contract-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: var(--space-3);
    padding: var(--space-1) var(--space-3);
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
}

.contract-box {
    display: flex;
    gap: var(--space-3);
    align-items: stretch;
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    transition: border-color var(--transition-fast);
}

.contract-box:hover {
    border-color: var(--border-accent);
}

.contract-address {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-primary);
    background: transparent;
    padding: var(--space-3);
    word-break: break-all;
    line-height: 1.5;
    display: flex;
    align-items: center;
}

.btn-copy {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background: var(--accent-primary);
    color: var(--text-on-accent);
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-copy:hover:not(:disabled) {
    background: var(--accent-primary-hover);
    transform: translateY(-1px);
}

.btn-copy:active:not(:disabled) {
    transform: translateY(0);
}

.btn-copy:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-copy .copy-text,
.btn-copy .copied-text {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.btn-copy .copied-text {
    display: none;
}

.btn-copy.copied .copy-text {
    display: none;
}

.btn-copy.copied .copied-text {
    display: flex;
}

.btn-copy.copied {
    background: var(--accent-green);
}

/* ============================================
   Info Box & Highlight Text
   ============================================ */
.info-box {
    background: var(--bg-elevated);
    border-left: 3px solid var(--accent-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: var(--space-5);
    margin: var(--space-5) 0;
}

.info-box-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.info-icon {
    font-size: 1.25rem;
}

.info-box p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.95rem;
}

.highlight-text {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    background: linear-gradient(90deg, var(--accent-glow) 0%, transparent 100%);
    border-radius: var(--radius-md);
    color: var(--accent-primary-hover);
    font-weight: 600;
    font-size: 1.05rem;
    margin-top: var(--space-5);
}

.highlight-icon {
    font-size: 1.25rem;
}

/* ============================================
   Feature List
   ============================================ */
.section-intro {
    color: var(--text-secondary);
    margin-bottom: var(--space-5);
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.feature-list li:hover {
    background: var(--bg-elevated);
    border-color: var(--border-accent);
    transform: translateX(4px);
}

.feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-text {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ============================================
   Roadmap Timeline
   ============================================ */
.roadmap-disclaimer {
    font-style: italic;
    color: var(--text-muted);
    margin-bottom: var(--space-6);
    font-size: 0.95rem;
}

.roadmap-timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.roadmap-item {
    display: flex;
    gap: var(--space-5);
}

.roadmap-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

.roadmap-number {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-primary-dim) 100%);
    color: var(--text-on-accent);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px var(--accent-glow);
    flex-shrink: 0;
}

.roadmap-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(180deg, var(--accent-primary-dim) 0%, var(--border-subtle) 100%);
    margin: var(--space-2) 0;
    min-height: 40px;
}

.roadmap-content {
    flex: 1;
    padding: var(--space-3) 0 var(--space-8) 0;
}

.roadmap-content h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.roadmap-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.roadmap-item:last-child .roadmap-content {
    padding-bottom: 0;
}

/* ============================================
   CTA Section
   ============================================ */
.section-cta {
    background: linear-gradient(180deg, var(--bg-body) 0%, var(--bg-secondary) 50%, var(--bg-body) 100%);
    padding: var(--space-16) 0;
}

.cta-content {
    text-align: center;
    max-width: var(--max-width-narrow);
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: var(--space-3);
    letter-spacing: -0.02em;
}

.cta-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--space-10);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: center;
}

/* ============================================
   Button Styles
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    min-width: 180px;
}

.btn svg {
    flex-shrink: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-primary-dim) 100%);
    color: var(--text-on-accent);
    border: none;
    box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-primary-hover) 0%, var(--accent-primary) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px var(--accent-glow-strong);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: var(--accent-glow);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--space-12) 0 var(--space-8);
    background: var(--bg-primary);
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.disclaimer-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: center;
    margin-bottom: var(--space-6);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.12);
    color: var(--accent-orange);
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.footer-disclaimer {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.footer-disclaimer strong {
    color: var(--accent-primary);
}

.footer-legal {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 700px;
    margin: 0 auto;
}

.footer-divider {
    height: 1px;
    background: var(--border-subtle);
    margin: var(--space-8) auto;
    max-width: 200px;
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    :root {
        --space-8: 1.5rem;
        --space-12: 2rem;
        --space-16: 3rem;
    }
    
    .hero-image {
        max-width: 100%;
    }
    
    .card {
        padding: var(--space-6);
    }
    
    .card-header h2 {
        font-size: 1.5rem;
    }
    
    .contract-box {
        flex-direction: column;
    }
    
    .contract-address {
        font-size: 0.8rem;
        padding: var(--space-3);
    }
    
    .btn-copy {
        width: 100%;
        justify-content: center;
    }
    
    .roadmap-item {
        gap: var(--space-4);
    }
    
    .roadmap-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
        min-width: unset;
    }
    
    .disclaimer-badges {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 15px;
    }
    
    .container {
        padding: 0 var(--space-4);
    }
    
    .card {
        padding: var(--space-5);
        border-radius: var(--radius-md);
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }
    
    .card-header h2 {
        font-size: 1.35rem;
    }
    
    .feature-list li {
        padding: var(--space-3) var(--space-4);
    }
    
    .roadmap-content h3 {
        font-size: 1.1rem;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
}

/* ============================================
   Accessibility Enhancements
   ============================================ */
@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;
    }
}

@media (prefers-contrast: high) {
    :root {
        --text-primary: #ffffff;
        --text-secondary: #e0e0e0;
        --border-default: rgba(255, 255, 255, 0.2);
    }
}

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

/* Selection styling */
::selection {
    background: var(--accent-glow-strong);
    color: var(--text-primary);
}