:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --danger: #ef4444;
    --success: #22c55e;
    --border: #334155;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--accent); text-decoration: none; transition: 0.2s; }
a:hover { color: var(--accent-hover); }

/* Typography */
h1, h2, h3 { margin: 0 0 1rem 0; letter-spacing: -0.025em; }
p { color: var(--text-secondary); line-height: 1.6; }

/* Components */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
    box-sizing: border-box;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    background: var(--accent);
    color: white;
    font-size: 0.9rem;
}
.btn:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-secondary); }
.btn-outline:hover { border-color: var(--text-primary); color: var(--text-primary); }
.btn-danger { background: var(--danger); }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.8rem; }

/* Forms */
.form-group { margin-bottom: 1.5rem; }
label { display: block; margin-bottom: 0.5rem; color: var(--text-secondary); font-size: 0.9rem; }
input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: white;
    font-size: 1rem;
    box-sizing: border-box;
    transition: 0.2s;
}
input:focus, select:focus { outline: none; border-color: var(--accent); ring: 2px solid var(--accent); }

/* Utility */
.flex { display: flex; gap: 1rem; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.grid { display: grid; gap: 1.5rem; }
.grid-cols-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.text-center { text-align: center; }
.w-full { width: 100%; }

/* Alerts */
.alert { padding: 1rem; border-radius: 8px; margin-bottom: 1rem; border: 1px solid; }
.alert-error { background: rgba(239, 68, 68, 0.1); border-color: var(--danger); color: var(--danger); }
.alert-success { background: rgba(34, 197, 94, 0.1); border-color: var(--success); color: var(--success); }

/* Table */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 1rem; border-bottom: 1px solid var(--border); }
th { color: var(--text-secondary); font-weight: 500; font-size: 0.85rem; text-transform: uppercase; }
tr:last-child td { border-bottom: none; }

/* Navbar */
.navbar { border-bottom: 1px solid var(--border); background: var(--card-bg); padding: 1rem 0; }
.nav-content { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.brand { font-weight: 700; font-size: 1.25rem; background: linear-gradient(to right, #60a5fa, #a855f7); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }