/* 
   GSOC ChatBot Platform - Global Design System
   Premium Glassmorphism & Modern Aesthetic
*/

:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --secondary: #ec4899;
    --accent: #8b5cf6;
    --background: #0f172a;
    --surface: rgba(30, 41, 59, 0.7);
    --surface-border: rgba(255, 255, 255, 0.1);
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --radius-lg: 1rem;
    --radius-md: 0.75rem;
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--background);
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0, transparent 50%),
        radial-gradient(at 100% 100%, rgba(236, 72, 153, 0.1) 0, transparent 50%);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Glassmorphism Classes */
.glass {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--surface-border);
    box-shadow: var(--shadow-xl);
}

/* Layout */
.app-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    padding: 2rem;
    border-right: 1px solid var(--surface-border);
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-muted);
}

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

.nav-item.active {
    border-left: 3px solid var(--primary);
}

/* Main Content */
.main-content {
    overflow-y: auto;
    padding: 2rem;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

h1 { font-size: 2rem; font-weight: 700; }
h2 { font-size: 1.5rem; font-weight: 600; margin-bottom: 1.5rem; }

/* Dashboard Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    padding: 1.5rem;
    border-radius: var(--radius-lg);
}

.stat-label { color: var(--text-muted); font-size: 0.875rem; }
.stat-value { font-size: 2rem; font-weight: 800; margin-top: 0.5rem; }

/* Grid Layout for Features */
.features-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.card {
    padding: 2rem;
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

/* Ultra Specific Components */
.visualizer-container {
    height: 300px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: #000;
    border: 8px solid #333;
    border-radius: 40px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}