:root {
    /* Color Palette - Premium Dark Theme */
    --bg-body: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-glass: rgba(15, 23, 42, 0.6);

    --primary: #6366f1;
    /* Indigo */
    --primary-glow: rgba(99, 102, 241, 0.5);
    --secondary: #ec4899;
    /* Pink */
    --accent: #8b5cf6;
    /* Violet */

    --text-main: #f8fafc;
    --text-muted: #94a3b8;

    --border-color: rgba(255, 255, 255, 0.1);
    --glass-border: 1px solid rgba(255, 255, 255, 0.05);

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;

    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-body);
    background-image:
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(236, 72, 153, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.15) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-right: var(--glass-border);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform 0.3s ease;
}

.logo-area {
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 0 20px var(--primary-glow);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(to right, #fff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-item {
    padding: 1rem 1.2rem;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
    font-weight: 500;
}

.nav-item:hover,
.nav-item.active {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    transform: translateX(5px);
}

.nav-item i {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 2rem 3rem;
    transition: margin-left 0.3s ease;
}

.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.mobile-toggle {
    display: none;
    /* Hidden on desktop */
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border-radius: 50px;
    border: var(--glass-border);
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(to right, var(--secondary), var(--accent));
}

/* Cards */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glass);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Dashboard Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card h3 {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(to right, #fff, #e2e8f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-family: inherit;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow);
}

/* Utilities */
.text-gradient {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.mb-4 {
    margin-bottom: 1rem;
}

/* MOBILE RESPONSIVENESS */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        /* Hide sidebar */
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }

    .sidebar.active {
        transform: translateX(0);
        /* Show sidebar */
    }

    .main-content {
        margin-left: 0;
        padding: 1.5rem;
    }

    .mobile-toggle {
        display: block;
        /* Show hamburger */
    }

    .header-bar {
        gap: 1rem;
    }

    .header-bar h1 {
        font-size: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        /* Stack cards */
    }

    /* Make tables scrollable */
    .card {
        padding: 1rem;
    }

    /* Bigger buttons for touch */
    .btn {
        padding: 1rem;
        width: 100%;
        /* Full width buttons on mobile */
    }

    /* Adjust quick actions */
    .card>div[style*="display: flex; gap: 1rem;"] {
        flex-direction: column;
    }
}