/* ============================================
   STAR TREK: UNITY - Main Stylesheet
   ============================================ */

/* ============================================
   CSS Variables (Theme Colors)
   ============================================ */
:root {
    /* Starfleet Colors */
    --starfleet-blue: #5C88DA;
    --starfleet-red: #CC3333;
    --starfleet-gold: #FFAA00;
    --warning-orange: #FF9900;
    --lcars-purple: #CC99CC;
    --lcars-peach: #FF9966;
    --lcars-blue: #9999FF;
    
    /* Neutral Colors */
    --dark-bg: #1a1a1a;
    --medium-bg: #2a2a2a;
    --light-bg: #f5f5f5;
    --card-bg: #ffffff;
    --border-color: #333333;
    
    /* Text Colors */
    --text-light: #ffffff;
    --text-dark: #1a1a1a;
    --text-muted: #666666;
    --text-accent: #5C88DA;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "Courier New", Courier, monospace;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--light-bg);
    overflow-x: hidden;
}

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

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

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

a {
    color: var(--text-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--starfleet-blue);
    text-decoration: underline;
}

strong {
    font-weight: 700;
}

em {
    font-style: italic;
}

code {
    font-family: var(--font-mono);
    background-color: var(--medium-bg);
    color: var(--text-light);
    padding: 0.2rem 0.4rem;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.lead {
    font-size: 1.25rem;
    font-weight: 400;
    line-height: 1.8;
}

.highlight {
    background-color: rgba(92, 136, 218, 0.1);
    padding: var(--spacing-sm);
    border-left: 4px solid var(--starfleet-blue);
    margin: var(--spacing-md) 0;
}

.alert {
    color: var(--starfleet-red);
    font-weight: 700;
}

/* ============================================
   Navigation
   ============================================ */
.main-nav {
    background-color: var(--dark-bg);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

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

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

.nav-logo .logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.site-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 0.05em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active {
    background-color: var(--starfleet-blue);
    color: var(--text-light);
    text-decoration: none;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--dark-bg);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: block;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 50%, #1a1a1a 100%);
    color: var(--text-light);
    padding: var(--spacing-xxl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(92, 136, 218, 0.03) 2px,
            rgba(92, 136, 218, 0.03) 4px
        );
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.hero-badge {
    display: inline-block;
    background-color: var(--starfleet-blue);
    color: var(--text-light);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--lcars-purple);
    margin-bottom: var(--spacing-sm);
    font-weight: 300;
}

.hero-tagline {
    font-size: 1.25rem;
    font-style: italic;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--lcars-peach);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
}

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

/* Responsive Hero */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-tagline {
        font-size: 1rem;
    }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--starfleet-blue);
    color: var(--text-light);
}

.btn-primary:hover {
    background-color: #4a6fb8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-light);
    border-color: var(--starfleet-blue);
}

.btn-secondary:hover {
    background-color: var(--starfleet-blue);
    color: var(--text-light);
    text-decoration: none;
}

.btn-tertiary {
    background-color: transparent;
    color: var(--lcars-purple);
    border-color: var(--lcars-purple);
}

.btn-tertiary:hover {
    background-color: var(--lcars-purple);
    color: var(--text-light);
    text-decoration: none;
}

.btn-download {
    background-color: var(--warning-orange);
    color: var(--text-light);
}

.btn-download:hover {
    background-color: #e68a00;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
}

/* ============================================
   Sections
   ============================================ */
section {
    padding: var(--spacing-xxl) 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    color: var(--text-dark);
}

/* ============================================
   Introduction Section
   ============================================ */
.intro-section {
    background-color: var(--card-bg);
}

.intro-content {
    display: grid;
    gap: var(--spacing-xl);
}

.intro-text {
    font-size: 1.125rem;
    line-height: 1.8;
}

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

.feature-card {
    background-color: var(--light-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--starfleet-blue);
}

.feature-card p {
    color: var(--text-muted);
    margin-bottom: 0;
}

/* ============================================
   Quick Start Section
   ============================================ */
.quickstart-section {
    background-color: var(--light-bg);
}

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

.quickstart-step {
    background-color: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    position: relative;
    border-left: 4px solid var(--starfleet-blue);
}

.step-number {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    font-size: 2rem;
    font-weight: 900;
    color: rgba(92, 136, 218, 0.2);
}

.quickstart-step h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--starfleet-blue);
}

.quickstart-step ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: var(--spacing-md);
}

.quickstart-step li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
}

.quickstart-step li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--starfleet-blue);
}

.step-link {
    display: inline-block;
    color: var(--starfleet-blue);
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

.step-link:hover {
    text-decoration: underline;
}

/* ============================================
   Mechanics Section
   ============================================ */
.mechanics-section {
    background-color: var(--card-bg);
}

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

.mechanic-card {
    background-color: var(--light-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
}

.mechanic-card h3 {
    color: var(--starfleet-blue);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.stat-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.stat-item-small {
    display: flex;
    flex-direction: column;
}

.stat-item-small strong {
    color: var(--starfleet-blue);
    font-size: 1rem;
}

.stat-item-small span {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.cohesion-track,
.pressure-track {
    display: flex;
    gap: var(--spacing-xs);
    margin: var(--spacing-md) 0;
    justify-content: center;
}

.cohesion-pip {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid var(--starfleet-blue);
    background-color: transparent;
}

.cohesion-pip.active {
    background-color: var(--starfleet-blue);
}

.pressure-segment {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid var(--text-muted);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

.pressure-segment.active {
    background-color: var(--warning-orange);
    border-color: var(--warning-orange);
    color: var(--text-light);
}

.pressure-segment.alert {
    background-color: var(--starfleet-red);
    border-color: var(--starfleet-red);
    color: var(--text-light);
}

.dice-example {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
    font-size: 1.5rem;
}

.die {
    font-size: 2rem;
}

.plus {
    color: var(--text-muted);
}

.stat-bonus {
    color: var(--starfleet-blue);
    font-weight: 700;
}

.mechanic-note {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: var(--spacing-sm);
}

/* ============================================
   Downloads Section
   ============================================ */
.downloads-section {
    background-color: var(--light-bg);
}

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

.download-card {
    background-color: var(--card-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    text-align: center;
    border: 2px solid var(--border-color);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.download-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.download-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--starfleet-blue);
}

.download-card p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Footer
   ============================================ */
.main-footer {
    background-color: var(--dark-bg);
    color: var(--text-light);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.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(--starfleet-blue);
    margin-bottom: var(--spacing-md);
}

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

.footer-section li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.footer-section a:hover {
    color: var(--text-light);
    text-decoration: underline;
}

.footer-version {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.legal-text {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.footer-bottom a {
    color: var(--starfleet-blue);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .intro-features,
    .quickstart-grid,
    .mechanics-grid,
    .downloads-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 13px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .main-nav,
    .hero,
    .cta-buttons,
    .main-footer {
        display: none;
    }
    
    body {
        background-color: white;
        color: black;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
}