/* ==========================================================================
   UHDC.io | Enterprise Design System
   ========================================================================== */

:root {
    /* Enterprise Dark Theme Variables */
    --bg-base: #0f172a;
    --bg-surface: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* UHDC Accent Colors */
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-purple: #8b5cf6;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;

    /* Design Language */
    --border-radius: 8px;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s ease;
}

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

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.console-font {
    font-family: 'Fira Code', monospace;
}

/* ==========================================================================
   NAVIGATION & LAYOUT
   ========================================================================== */
nav {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.9rem;
    transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-blue);
}

.btn-nav {
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
}

.btn-nav:hover {
    border-color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.1);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

section {
    padding: 4rem 0;
    border-bottom: 1px solid var(--border-color);
}

/* ==========================================================================
   HERO & MOCK UI (The "Software" Vibe)
   ========================================================================== */
.hero-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 2rem;
}

.mock-ui-container {
    background: var(--bg-surface);
    border-radius: var(--border-radius);
    border-top: 4px solid var(--accent-blue);
    box-shadow: var(--shadow-md);
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.mock-ui-header {
    background: rgba(0,0,0,0.3);
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.mock-ui-body {
    padding: 24px;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ==========================================================================
   FEATURE GRIDS & CARDS
   ========================================================================== */
.feature-grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-box {
    background: var(--bg-surface);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(255,255,255,0.2);
}

.feature-icon {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
}

/* ==========================================================================
   CAPABILITIES / ARSENAL GRID
   ========================================================================== */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tool-card {
    background: var(--bg-surface);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: inherit;
    display: block;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(255,255,255,0.2);
}

.tool-card h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.tool-type {
    font-size: 0.85rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.tool-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.view-docs {
    font-size: 0.85rem;
    font-weight: bold;
    color: var(--text-muted);
    transition: var(--transition);
}

.tool-card:hover .view-docs {
    color: var(--text-primary);
}

/* ==========================================================================
   COMPARISON GRIDS (Live Call / Training)
   ========================================================================== */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 3rem 0;
}

.comp-card {
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border: 1px solid;
    box-shadow: var(--shadow-md);
}

.comp-bad {
    background: rgba(239, 68, 68, 0.05);
    border-color: rgba(239, 68, 68, 0.2);
}

.comp-good {
    background: rgba(16, 185, 129, 0.05);
    border-color: rgba(16, 185, 129, 0.2);
}

/* ==========================================================================
   GOVERNANCE TABLES
   ========================================================================== */
.gov-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
    background: var(--bg-surface);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.gov-table th {
    background: rgba(0,0,0,0.2);
    padding: 1rem;
    text-align: left;
    color: var(--accent-blue);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

.gov-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.gov-table tr:last-child td {
    border-bottom: none;
}

.gov-table tr:hover td {
    background: rgba(255,255,255,0.02);
}

/* ==========================================================================
   TRAINING ENGINE COMPONENTS
   ========================================================================== */
.training-showcase {
    background: linear-gradient(135deg, rgba(15, 23, 42, 1) 0%, rgba(30, 41, 59, 1) 100%);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--border-radius);
    padding: 3rem;
    margin-top: 2rem;
    box-shadow: var(--shadow-md);
}

.mock-code {
    background: #000;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    color: #f8f8f2;
    border: 1px solid #333;
    margin: 1.5rem 0;
    overflow-x: auto;
    line-height: 1.5;
}

.mock-code .cmd { color: #66D9EF; }
.mock-code .param { color: #A6E22E; }
.mock-code .var { color: #FFB86C; }
.mock-code .str { color: #E6DB74; }

.mock-inperson {
    padding: 1.5rem;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    border-left: 4px solid var(--accent-blue);
    margin-top: 1.5rem;
}

/* ==========================================================================
   FAQ & ACCORDION BLOCKS
   ========================================================================== */
.faq-block {
    background-color: var(--bg-surface);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--accent-blue);
    border-top: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    font-weight: 600;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.faq-answer {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* ==========================================================================
   PRICING TABLES
   ========================================================================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

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

.card-free { border-top: 4px solid var(--accent-green); }
.card-pro { border-top: 4px solid var(--accent-blue); transform: scale(1.05); box-shadow: var(--shadow-md); z-index: 10; }
.card-custom { border-top: 4px solid var(--accent-purple); }

.pricing-tier { font-size: 1.2rem; font-weight: bold; margin-bottom: 1rem; text-transform: uppercase; letter-spacing: 1px; }
.pricing-price { font-size: 3.5rem; font-weight: 800; color: var(--text-primary); margin-bottom: 0.5rem; line-height: 1; }
.pricing-sub { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 2rem; min-height: 40px; }

.pricing-features {
    list-style: none;
    margin-bottom: 3rem;
    text-align: left;
    flex-grow: 1;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.pricing-features li::before {
    content: '✓';
    color: var(--accent-green);
    margin-right: 10px;
    font-weight: bold;
}

/* ==========================================================================
   BUTTONS & UTILITIES
   ========================================================================== */
.btn {
    display: inline-block;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.btn-full {
    display: block;
    width: 100%;
    padding: 1rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
    border: 1px solid transparent;
}

.btn-full:hover { opacity: 0.9; transform: translateY(-2px); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 900px) {
    .hero-split, .comparison-grid { grid-template-columns: 1fr; }
    .card-pro { transform: scale(1); }
    .nav-links { display: none; }
}