/* ========================================
   Tarot Vision XR - Design System
   ======================================== */

:root {
    /* Color Palette - Mystical Dark Theme */
    --color-bg-primary: #0a0a12;
    --color-bg-secondary: #12121f;
    --color-bg-glass: rgba(20, 20, 35, 0.85);
    --color-bg-glass-light: rgba(255, 255, 255, 0.05);
    
    --color-accent-primary: #9d4edd;
    --color-accent-secondary: #c77dff;
    --color-accent-tertiary: #e0aaff;
    --color-accent-gold: #ffd700;
    
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.5);
    
    --color-success: #4ade80;
    --color-warning: #fbbf24;
    --color-error: #f87171;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #6B8DD6 100%);
    --gradient-mystical: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    --gradient-glow: radial-gradient(circle, rgba(157, 78, 221, 0.3) 0%, transparent 70%);
    
    /* Typography */
    --font-primary: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-display: 'Georgia', serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(157, 78, 221, 0.4);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ========================================
   Base Styles
   ======================================== */

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: var(--font-primary);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
}

body {
    background: var(--gradient-mystical);
    background-attachment: fixed;
}

/* Animated Background Stars */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255,255,255,0.4), transparent),
        radial-gradient(2px 2px at 160px 120px, rgba(255,255,255,0.3), transparent),
        radial-gradient(1px 1px at 230px 80px, rgba(255,255,255,0.2), transparent);
    background-size: 250px 160px;
    animation: twinkle 8s ease-in-out infinite alternate;
    pointer-events: none;
    z-index: 0;
}

@keyframes twinkle {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* ========================================
   Entry Screen
   ======================================== */

#entry-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    z-index: 100;
}

.glass-container {
    background: var(--color-bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    max-width: 480px;
    width: 100%;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Logo Section */
.logo-section {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.crystal-ball {
    font-size: 4rem;
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 0 20px rgba(157, 78, 221, 0.5));
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.logo-section h1 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 400;
    margin-top: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-accent-tertiary), var(--color-accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.xr-badge {
    display: inline-block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
    vertical-align: super;
}

.tagline {
    color: var(--color-text-secondary);
    font-size: 1rem;
    margin-top: var(--spacing-xs);
    letter-spacing: 0.5px;
}

/* API Section */
.api-section {
    margin-bottom: var(--spacing-xl);
}

.api-section label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.input-wrapper {
    position: relative;
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.input-wrapper input {
    flex: 1;
    background: var(--color-bg-glass-light);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    font-size: 1rem;
    color: var(--color-text-primary);
    outline: none;
    transition: var(--transition-normal);
}

.input-wrapper input:focus {
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px rgba(157, 78, 221, 0.2);
}

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

.icon-btn {
    background: var(--color-bg-glass-light);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    width: 48px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 1.2rem;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition-slow);
}

.btn-primary:hover:not(:disabled)::before {
    left: 100%;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-accent-secondary);
    background: transparent;
    border: 1px solid var(--color-accent-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-secondary:hover {
    background: rgba(157, 78, 221, 0.1);
}

.btn-icon {
    font-size: 1.2rem;
}

/* Status Message */
.status-message {
    min-height: 24px;
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    text-align: center;
    transition: var(--transition-fast);
}

.status-message.success {
    color: var(--color-success);
}

.status-message.error {
    color: var(--color-error);
}

/* Instructions */
.instructions {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.instructions h3 {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
}

.instructions ol {
    padding-left: var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
}

.instructions li::marker {
    color: var(--color-accent-primary);
}

/* Warning Message */
.warning-message {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.3);
    border-radius: var(--radius-sm);
    color: var(--color-warning);
    font-size: 0.9rem;
    text-align: center;
}

/* ========================================
   Scene Container
   ======================================== */

#scene-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#scene-container canvas {
    width: 100% !important;
    height: 100% !important;
}

/* ========================================
   Loading Overlay
   ======================================== */

#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 18, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loader {
    text-align: center;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(157, 78, 221, 0.2);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

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

.loader p {
    color: var(--color-text-secondary);
    font-size: 1rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 480px) {
    .glass-container {
        padding: var(--spacing-lg);
        margin: var(--spacing-sm);
    }
    
    .logo-section h1 {
        font-size: 2rem;
    }
    
    .crystal-ball {
        font-size: 3rem;
    }
}

/* ========================================
   XR Panel Styles (for CSS2DRenderer)
   ======================================== */

.xr-panel {
    background: var(--color-bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    pointer-events: auto;
}

.xr-panel-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-accent-tertiary), var(--color-accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.xr-panel-content {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.xr-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.xr-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* Reading Results Panel */
.reading-panel {
    max-width: 500px;
    max-height: 400px;
    overflow-y: auto;
}

.reading-panel::-webkit-scrollbar {
    width: 6px;
}

.reading-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.reading-panel::-webkit-scrollbar-thumb {
    background: var(--color-accent-primary);
    border-radius: 3px;
}

.card-reading {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    background: var(--color-bg-glass-light);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-accent-primary);
}

.card-reading h4 {
    color: var(--color-accent-secondary);
    margin-bottom: var(--spacing-sm);
}

.synthesis {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(157, 78, 221, 0.1), rgba(102, 126, 234, 0.1));
    border-radius: var(--radius-sm);
    border: 1px solid rgba(157, 78, 221, 0.3);
}

.synthesis h4 {
    color: var(--color-accent-gold);
    margin-bottom: var(--spacing-sm);
}