/**
 * Summer Whisper Search Lab - UI Theme
 * 
 * Usage:
 * 1. Include this file in your project.
 * 2. Ensure Tailwind CSS is loaded (via CDN or build process).
 * 3. Ensure Phosphor Icons are loaded for icons.
 * 4. Apply classes like .glass-card, .btn-gradient to your elements.
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Base Colors */
    --color-bg-dark: #0f172a;
    --color-text-main: #e2e8f0;
    --color-text-muted: #94a3b8;
    
    /* Theme Colors */
    --color-indigo-500: #6366f1;
    --color-purple-500: #a855f7;
    --color-indigo-400: #818cf8;
    --color-slate-800: #1e293b;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-indigo-500) 0%, var(--color-purple-500) 100%);
    
    /* Glassmorphism Variables */
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --glass-blur: 12px;
}

/* Base Styles */
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--color-bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
    background-attachment: fixed;
    background-size: cover;
    color: var(--color-text-main);
    min-height: 100vh;
}

/* Helper Classes */
[v-cloak] { display: none !important; }

/* 
 * Component: Glass Card 
 * Usage: <div class="glass-card p-4">...</div>
 */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 16px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-nav {
    border-radius: 9999px;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(129, 140, 248, 0.6);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.95);
}

.btn-nav:hover {
    background: rgba(30, 64, 175, 0.9);
    border-color: rgba(165, 180, 252, 0.95);
}

/* 
 * Component: Glass Input 
 * Usage: <input class="glass-input ...">
 */
.glass-input {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #f1f5f9;
    transition: all 0.2s;
}

.glass-input:focus {
    background: rgba(15, 23, 42, 0.8);
    border-color: var(--color-indigo-400);
    outline: none;
    box-shadow: 0 0 0 2px rgba(129, 140, 248, 0.3);
}

/* 
 * Component: Gradient Button 
 * Usage: <button class="btn-gradient ...">Button</button>
 */
.btn-gradient {
    background: var(--gradient-primary);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    transition: all 0.3s ease;
    border: none;
    color: white;
}

.btn-gradient:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.btn-gradient:active {
    transform: translateY(0);
}

/* 
 * Component: Secondary Button 
 */
.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-main);
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 
 * Component: Tag Chip 
 */
.tag-chip {
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: #c7d2fe;
    border-radius: 6px;
    transition: all 0.2s;
}

.tag-chip:hover {
    background: rgba(99, 102, 241, 0.25);
    border-color: rgba(99, 102, 241, 0.5);
}

.tag-chip.active {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    border: none;
    color: white;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.4);
}

.form-checkbox {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 0.4rem;
    border: 1px solid rgba(148, 163, 184, 0.95);
    background: rgba(15, 23, 42, 0.8);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.9);
}

.form-checkbox:hover {
    border-color: rgba(129, 140, 248, 0.95);
    box-shadow: 0 0 0 1px rgba(79, 70, 229, 0.6);
}

.form-checkbox:checked {
    background-image: var(--gradient-primary);
    border-color: transparent;
}

.form-checkbox:checked::after {
    content: '✓';
    color: #ffffff;
    font-size: 0.7rem;
}

.form-checkbox:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px rgba(129, 140, 248, 0.85);
}

/* 
 * Component: Glass Table 
 */
.glass-table thead th {
    background: rgba(15, 23, 42, 0.8);
    color: var(--color-text-muted);
    font-weight: 500;
    letter-spacing: 0.05em;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.glass-table tbody tr {
    transition: background 0.2s;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.glass-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

.glass-table td {
    color: #cbd5e1;
}

/* 
 * Component: Loading Overlay 
 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-indigo-500);
    animation: spin 1s ease-in-out infinite;
}

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

/* 
 * Animation: Fade In 
 */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { animation: fadeIn 0.5s ease-out forwards; }

/* 
 * Scrollbar Customization 
 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: rgba(15, 23, 42, 0.3); border-radius: 4px; }
::-webkit-scrollbar-thumb { background: rgba(99, 102, 241, 0.3); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(99, 102, 241, 0.5); }