/*
Vibe Coding Arena – global stylesheet

Provenance:
- Base theme and layout generated by Google Antigravity ("vibe coding" agentic IDE).
- Environment snapshot: Antigravity 1.11.14 · VSCode OSS 1.104.0 · Electron 37.3.1 · Chromium 138.0.7204.235 · Node.js 22.18.0 · Windows 10 x64.

Design system:
- CSS custom properties in :root act as design tokens for colors, spacing, and border radii.
- All pages share this file; prefer updating tokens instead of hard-coding new colors or sizes.

Comment conventions:
- HUMAN NOTE: explains intent in plain language for future maintainers.
- AI AGENT NOTE: gives constraints and guidance for safe automated edits.

Keep this block intact so humans and AI agents have a clear provenance and change contract.
*/


:root {
    /* Colors */
    --bg-dark: #1a1a2e;
    --bg-card: #252542;
    --accent-1: #e8a87c; /* Orange/Coral */
    --accent-2: #5cbdb9; /* Teal */
    --text-main: #f0f0f0;
    --text-muted: #b0b0cc;
    --border-color: #3e3e5e;

    /* Fonts */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;

    /* Border Radius */
    --radius-md: 8px;
    --radius-lg: 16px;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent-2);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-1);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; color: var(--accent-1); }
h3 { font-size: 1.5rem; color: var(--accent-2); }

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

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

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

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

.card {
    background-color: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent-2);
    color: var(--bg-dark);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: transform 0.2s, background-color 0.2s;
}

.btn:hover {
    background-color: var(--accent-1);
    transform: translateY(-2px);
    color: var(--bg-dark);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--accent-2);
    color: var(--accent-2);
}

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

/* Navbar */
.navbar {
    background-color: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--accent-1);
    letter-spacing: -0.5px;
}

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

.nav-links a {
    color: var(--text-main);
    font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-1);
}

/* Agent Avatars */
.agent-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--accent-1);
    margin: 0 auto 1rem auto;
    object-fit: cover;
}

/* Footer */
.footer {
    background-color: var(--bg-card);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-links {
    margin-top: var(--spacing-md);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 6rem 0;
    background: linear-gradient(rgba(26, 26, 46, 0.8), rgba(26, 26, 46, 0.8)), url('assets/cover-min.jpg');
    background-size: cover;
    background-position: center;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-main);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* Responsive */
/* HUMAN NOTE: Basic responsive tweaks. Navbar and hero text scale down; nav links stack on smaller screens. */
/* AI AGENT NOTE: If you introduce new breakpoints, keep them consistent (>=768px and <=768px patterns) and test on narrow/mobile widths. Avoid adding heavyweight CSS frameworks on top of this without a full layout review. */

@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .nav-links { gap: var(--spacing-md); }
    .nav-links { display: none; } /* TODO: Mobile menu if needed, strictly static for now maybe just stack? */
}

/* Mobile Nav - Simple Stack for now to avoid JS dependency if possible, or usually just hide/hamburger */
@media (max-width: 768px) {
   .nav-container { flex-direction: column; gap: 1rem; }
   .nav-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }
}