/**
 * Critical CSS - Above-the-fold styles only
 *
 * PROJECT LIGHTNING Phase 5.1
 *
 * This file contains ONLY the CSS needed for initial above-the-fold render:
 * - CSS variables (colors, fonts, spacing)
 * - Reset styles
 * - Body/html base styles
 * - Header styles
 * - Main layout containers
 *
 * Size target: < 5 KB (inlined in HTML)
 *
 * DO NOT add component-specific or below-fold styles here.
 */

/* ========================================
   CSS VARIABLES
   ======================================== */

:root {
    /* Color System */
    --bg-primary: #0a0e17;
    --bg-secondary: #0d1520;
    --bg-tertiary: #111a28;
    --bg-panel: rgba(0, 50, 100, 0.85);

    /* Accent Colors */
    --accent-cyan: #00cfff;
    --accent-glow: rgba(0, 150, 255, 0.5);
    --accent-lime: #00cfff;
    --accent-pink: #FF5000;
    --accent-blue: #00cfff;
    --accent-gold: #ffd700;
    --accent-orange: #FF5000;

    --text-primary: #FFFFFF;
    --text-secondary: #9DA3A8;
    --text-dim: #6B7280;
    --border-color: rgba(0, 150, 255, 0.3);

    /* Typography */
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-display: 'Archivo Black', sans-serif;
    --font-body: 'Inter', 'Outfit', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;

    /* Glass-Morphism */
    --glass-blur: blur(15px);
    --glass-border: 1px solid rgba(0, 150, 255, 0.5);
}

/* ========================================
   RESET & BASE
   ======================================== */

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

html {
    overflow-x: hidden;
    max-width: 100vw;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-mono);
    background: linear-gradient(180deg, #0a0e17 0%, #0d1520 50%, #111a28 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    max-width: 100vw;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a, button {
    outline: none;
}

/* ========================================
   HEADER (chat-header from partials)
   ======================================== */

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, rgba(0, 50, 100, 0.5) 0%, rgba(0, 80, 150, 0.4) 100%);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(0, 150, 255, 0.3);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.chat-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.chat-header-right {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.chat-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 207, 255, 0.2), rgba(0, 150, 255, 0.3));
    border: 2px solid var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.chat-header-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.chat-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(90deg, #00cfff, #0099ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.chat-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 10px #4ade80;
}

/* Header Buttons */
.chat-header-btn {
    min-width: 44px;
    min-height: 44px;
    border: 1px solid rgba(0, 150, 255, 0.3);
    background: rgba(0, 50, 100, 0.3);
    border-radius: 10px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    text-decoration: none;
}

.chat-header-btn:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(0, 100, 255, 0.2);
}

.chat-header-btn svg {
    width: 20px;
    height: 20px;
}

/* Auth buttons */
.chat-header-btn.auth-btn {
    width: auto;
    padding: 6px 12px;
    gap: 6px;
    font-size: 12px;
}

.chat-header-btn.login-btn {
    background: linear-gradient(135deg, rgba(0, 150, 255, 0.15), rgba(0, 100, 200, 0.25));
    border: 1px solid rgba(0, 150, 255, 0.3);
}

.chat-header-btn.signup-btn {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.15), rgba(34, 197, 94, 0.25));
    border: 1px solid rgba(74, 222, 128, 0.3);
}

.auth-text {
    font-weight: 500;
}

.chat-header-btn.login-btn .auth-text { color: #00cfff; }
.chat-header-btn.signup-btn .auth-text { color: #4ade80; }

/* Wallet button */
.chat-header-btn.wallet-btn {
    width: auto;
    padding: 0 12px;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 12px;
}

/* ========================================
   MAIN LAYOUT
   ======================================== */

.main-content,
.chat-container,
.perpetual-main {
    padding-top: 70px; /* Account for fixed header */
    min-height: 100vh;
}

/* Container utilities */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* ========================================
   MOBILE CRITICAL STYLES
   ======================================== */

@media (max-width: 768px) {
    .chat-header {
        padding: 0.5rem 1rem;
    }

    .chat-avatar {
        width: 36px;
        height: 36px;
    }

    .chat-title {
        font-size: 1rem;
    }

    .chat-header-right {
        gap: 0.25rem;
    }

    .chat-header-btn {
        min-width: 40px;
        min-height: 40px;
    }

    .chat-header-btn.auth-btn .auth-text {
        display: none;
    }
}

@media (max-width: 480px) {
    .chat-header {
        padding: 0.4rem 0.75rem;
    }

    .chat-header-btn {
        width: 32px;
        height: 32px;
        min-width: 32px;
        min-height: 32px;
    }

    .chat-header-btn svg {
        width: 16px;
        height: 16px;
    }
}

/* ========================================
   LOADING STATE (prevents FOUC)
   ======================================== */

.loading-skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}