@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600&display=swap');

:root {
    --primary: #4f46e5;
    --primary-dark: #3730a3;
    --primary-light: rgba(79, 70, 229, 0.06);
    --secondary: #0f172a;
    --bg-app: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --shadow-premium: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
}

[data-theme='dark'] {
    --primary: #818cf8;
    --primary-dark: #4f46e5;
    --primary-light: rgba(129, 140, 248, 0.08);
    --secondary: #f8fafc;
    --bg-app: #020617;
    --bg-card: #0f172a;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #1e293b;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

body {
    background-color: var(--bg-app);
    color: var(--text-main);
    min-height: 100vh;
    transition: background-color 0.3s;
}

/* Base Layout */
.app-container {
    display: flex;
    height: 100vh;
    padding: 1rem;
    gap: 1rem;
    overflow: hidden;
}

/* Sidebar Refined */
.sidebar {
    width: 280px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 2rem 0;
    flex-shrink: 0;
    box-shadow: var(--shadow-premium);
}

.main-content {
    flex: 1;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-premium);
}

.content-inner {
    padding: 2.5rem;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

/* Sophisticated Navigation */
.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    margin: 0 1rem 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 14px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
    background: var(--primary-light);
    color: var(--primary);
    transform: translateX(4px);
}

.nav-link.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 8px 15px -3px rgba(79, 70, 229, 0.3);
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    border: 1px solid var(--border);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }

.btn-secondary { background: var(--bg-app); color: var(--text-main); border-color: var(--border); }

/* Badges */
.badge {
    padding: 0.4rem 0.8rem;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-success { background: rgba(16, 185, 129, 0.1); color: #10b981; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }