:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --success: #22c55e;
    --error: #ef4444;
}

* { box-sizing: border-box; transition: all 0.2s ease; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.5;
    margin: 0;
}

.container { max-width: 1000px; margin: 0 auto; padding: 2rem 1rem; }

/* Navbar */
.navbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    margin-bottom: 2rem;
}
.navbar .container {
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.navbar a { text-decoration: none; color: var(--text); font-weight: 500; }
.navbar .brand { font-size: 1.25rem; font-weight: 700; color: var(--primary); }
.nav-links { display: flex; gap: 1.5rem; align-items: center; }

/* Components */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 1.5rem;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 4px 6px rgba(0,0,0,0.05); }

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    border: none;
    text-align: center;
    font-size: 0.875rem;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: #f1f5f9; color: var(--text); }
.btn-secondary:hover { background: #e2e8f0; }

.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-size: 0.875rem; font-weight: 500; }
.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
}
.form-group input:focus { outline: none; border-color: var(--primary); ring: 2px solid var(--primary); }

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-weight: 500;
}
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

.points-badge {
    background: #e0e7ff;
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 700;
}

.progress-container {
    background: #e2e8f0;
    border-radius: 9999px;
    height: 10px;
    width: 100%;
    margin: 10px 0;
    overflow: hidden;
}
.progress-bar {
    background: var(--primary);
    height: 100%;
    border-radius: 9999px;
}

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
@media (max-width: 768px) { .grid { grid-template-columns: 1fr; } }