/* ========================================
   LUMINA - Base Styles
   ======================================== */

:root {
    /* Dark cyberpunk theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: linear-gradient(145deg, #15151f 0%, #0d0d14 100%);
    
    /* Accent colors - Mint green & cyan */
    --accent-primary: #00f0ff;
    --accent-secondary: #00ff88;
    --accent-tertiary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #00ff88 0%, #00f0ff 50%, #8b5cf6 100%);
    --accent-glow: 0 0 30px rgba(0, 255, 136, 0.3);
    
    /* Text colors */
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    
    /* Borders */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 240, 255, 0.3);
    
    /* Spacing */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50px;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated background */
.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(0, 255, 136, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(139, 92, 246, 0.05) 0%, transparent 60%);
}

.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background-image: 
        linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 2rem;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    color: var(--bg-primary);
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.nav-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    background: transparent;
    cursor: pointer;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    box-shadow: var(--accent-glow);
}

.nav-tab svg {
    width: 18px;
    height: 18px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    border: none;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    box-shadow: var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(0, 240, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* User info */
.user-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.wallet-address {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--accent-primary);
    padding: 8px 16px;
    background: rgba(0, 240, 255, 0.1);
    border-radius: var(--radius-full);
    border: 1px solid rgba(0, 240, 255, 0.2);
}

/* Main content */
main {
    position: relative;
    z-index: 1;
    padding: 100px 2rem 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Auth required overlay */
.auth-required {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    z-index: 50;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 2rem;
    text-align: center;
}

.auth-required.visible {
    display: flex;
}

.auth-required h2 {
    font-size: 2rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-required p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

footer a {
    color: var(--accent-primary);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Status indicator */
.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #666;
}

.status-dot.connected {
    background: #00ff88;
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
}

.status-dot.disconnected {
    background: #ff6b6b;
}

/* GPU Unavailable Banner */
.gpu-unavailable-banner {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, rgba(255, 165, 0, 0.1) 0%, rgba(255, 100, 0, 0.05) 100%);
    border: 1px solid rgba(255, 165, 0, 0.3);
    border-radius: var(--radius-md);
    animation: pulse-warning 2s ease-in-out infinite;
}

@keyframes pulse-warning {
    0%, 100% { box-shadow: 0 0 20px rgba(255, 165, 0, 0.1); }
    50% { box-shadow: 0 0 30px rgba(255, 165, 0, 0.2); }
}

.gpu-banner-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 165, 0, 0.15);
    border-radius: var(--radius-sm);
    color: #ffa500;
}

.gpu-banner-icon svg {
    width: 24px;
    height: 24px;
}

.gpu-banner-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffa500;
    margin-bottom: 0.5rem;
}

.gpu-banner-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

.gpu-banner-content a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
}

.gpu-banner-content a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 900px) {
    .header-content {
        flex-wrap: wrap;
    }
    
    .nav-tabs {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: 1rem;
    }
}

@media (max-width: 768px) {
    header {
        padding: 1rem;
    }
    
    .logo-text {
        display: none;
    }
    
    main {
        padding: 140px 1rem 3rem;
    }
    
    .nav-tab span {
        display: none;
    }
    
    .nav-tab {
        padding: 10px 16px;
    }
}