/**
 * AI Zeus Website Styles
 * Military-themed dark design
 */

/* ============================================
   CSS Variables
   ============================================ */
:root {
    /* Colors */
    --color-bg-dark: #0a0e14;
    --color-bg-medium: #121820;
    --color-bg-light: #1a222d;
    --color-bg-card: #1e2832;
    
    --color-primary: #ff6b00;
    --color-primary-light: #ff8a33;
    --color-primary-dark: #cc5500;
    
    --color-accent: #00d4ff;
    --color-accent-light: #33ddff;
    --color-accent-dark: #00a8cc;
    
    --color-success: #00ff88;
    --color-warning: #ffcc00;
    --color-danger: #ff4444;
    
    --color-text: #e8e8e8;
    --color-text-muted: #8899aa;
    --color-text-dark: #556677;
    
    --color-border: #2a3644;
    --color-border-light: #3a4654;
    
    /* Typography */
    --font-heading: 'Rajdhani', sans-serif;
    --font-mono: 'Share Tech Mono', monospace;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    
    /* Container */
    --container-max: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg-dark);
    min-height: 100vh;
}

img {
    max-width: 100%;
    height: auto;
}

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

a:hover {
    color: var(--color-accent-light);
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

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

.highlight {
    color: var(--color-primary);
}

.text-accent {
    color: var(--color-accent);
}

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

code, .mono {
    font-family: var(--font-mono);
}

/* ============================================
   Layout
   ============================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section-dark {
    background: var(--color-bg-medium);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-primary);
}

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 992px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* ============================================
   Header
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 20, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.logo-img {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
}

.logo-icon {
    font-size: 1.75rem;
}

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

.logo:hover .highlight {
    color: var(--color-primary-light);
}

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

.nav-list a {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 1rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: var(--spacing-sm) 0;
    position: relative;
}

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

.nav-list a:hover,
.nav-list a.active {
    color: var(--color-text);
}

.nav-list a:hover::after,
.nav-list a.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-list {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg-dark);
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        display: none;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-list.active {
        display: flex;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: calc(70px + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
    background: linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg-medium) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(255, 107, 0, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-logo {
    width: 150px;
    height: 150px;
    margin-bottom: var(--spacing-lg);
    border-radius: 50%;
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.4), 0 0 80px rgba(255, 107, 0, 0.2);
    animation: logoGlow 3s ease-in-out infinite alternate;
}

@keyframes logoGlow {
    from {
        box-shadow: 0 0 40px rgba(0, 212, 255, 0.4), 0 0 80px rgba(255, 107, 0, 0.2);
    }
    to {
        box-shadow: 0 0 60px rgba(0, 212, 255, 0.6), 0 0 100px rgba(255, 107, 0, 0.3);
    }
}

.hero-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-primary);
    background: rgba(255, 107, 0, 0.1);
    border: 1px solid var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 0 40px rgba(255, 107, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: var(--spacing-md) var(--spacing-xl);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary-light);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(255, 107, 0, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

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

.btn-sm {
    font-size: 0.875rem;
    padding: var(--spacing-sm) var(--spacing-lg);
}

.btn-lg {
    font-size: 1.125rem;
    padding: var(--spacing-lg) var(--spacing-2xl);
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.card-text {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* Feature Card */
.feature-card {
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-list {
    list-style: none;
    margin-top: var(--spacing-lg);
}

.feature-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.feature-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* Download Card */
.download-card {
    display: flex;
    flex-direction: column;
}

.download-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.download-card .version-badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-success);
    background: rgba(0, 255, 136, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.download-card .card-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin: var(--spacing-md) 0;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.download-card .card-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.download-card .requirements {
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.download-card .requirements h5 {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.download-card .requirements ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.download-card .requirements li {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    background: var(--color-bg-medium);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.download-card .btn {
    margin-top: var(--spacing-lg);
}

/* ============================================
   Documentation
   ============================================ */
.doc-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-2xl);
    padding-top: calc(70px + var(--spacing-2xl));
}

.doc-sidebar {
    position: sticky;
    top: calc(70px + var(--spacing-lg));
    height: fit-content;
}

.doc-nav {
    list-style: none;
}

.doc-nav-section {
    margin-bottom: var(--spacing-lg);
}

.doc-nav-title {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.doc-nav a {
    display: block;
    padding: var(--spacing-xs) var(--spacing-md);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    border-left: 2px solid transparent;
    transition: all var(--transition-fast);
}

.doc-nav a:hover,
.doc-nav a.active {
    color: var(--color-text);
    border-left-color: var(--color-primary);
    background: rgba(255, 107, 0, 0.05);
}

.doc-content {
    min-width: 0;
}

.doc-section {
    margin-bottom: var(--spacing-3xl);
}

.doc-section h2 {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.doc-section h3 {
    color: var(--color-primary);
    margin-top: var(--spacing-xl);
}

@media (max-width: 992px) {
    .doc-layout {
        grid-template-columns: 1fr;
    }
    
    .doc-sidebar {
        position: static;
        display: none;
    }
}

/* ============================================
   Code Blocks
   ============================================ */
pre {
    background: var(--color-bg-dark);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

pre code {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text);
}

code:not(pre code) {
    font-family: var(--font-mono);
    font-size: 0.875em;
    color: var(--color-accent);
    background: rgba(0, 212, 255, 0.1);
    padding: 0.1em 0.4em;
    border-radius: var(--radius-sm);
}

/* Syntax highlighting */
.code-comment { color: #6a737d; }
.code-keyword { color: #ff7b72; }
.code-string { color: #a5d6ff; }
.code-number { color: #79c0ff; }
.code-function { color: #d2a8ff; }
.code-variable { color: #ffa657; }

/* ============================================
   Tables
   ============================================ */
.table-wrapper {
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

th, td {
    text-align: left;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

th {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-bg-medium);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 1px;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

td code {
    font-size: 0.8125rem;
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) 0;
    border-left: 4px solid;
}

.alert-info {
    background: rgba(0, 212, 255, 0.1);
    border-left-color: var(--color-accent);
}

.alert-warning {
    background: rgba(255, 204, 0, 0.1);
    border-left-color: var(--color-warning);
}

.alert-danger {
    background: rgba(255, 68, 68, 0.1);
    border-left-color: var(--color-danger);
}

.alert-success {
    background: rgba(0, 255, 136, 0.1);
    border-left-color: var(--color-success);
}

.alert-title {
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   Stats
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin: var(--spacing-2xl) 0;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: var(--spacing-sm);
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--color-bg-medium);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.footer-logo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.footer-section .version {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-primary);
}

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

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

.footer-section a {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

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

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

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-xs);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
    padding: calc(70px + var(--spacing-3xl)) 0 var(--spacing-2xl);
    background: linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg-medium) 100%);
    text-align: center;
}

.page-header h1 {
    margin-bottom: var(--spacing-md);
}

.page-header .lead {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Installation Steps
   ============================================ */
.steps {
    counter-reset: step;
}

.step {
    position: relative;
    padding-left: 80px;
    margin-bottom: var(--spacing-2xl);
}

.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    background: rgba(255, 107, 0, 0.1);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
}

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

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

/* ============================================
   Utilities
   ============================================ */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-xl); }
.mt-3 { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-xl); }
.mb-3 { margin-bottom: var(--spacing-2xl); }

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

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-sizing: border-box;
}

.form-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.form-input::placeholder {
    color: var(--color-text-dark);
}