/* RustCast Dashboard Styles */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --danger: #dc2626;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

/* Navbar */
.navbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-brand { font-weight: 700; font-size: 1.2rem; color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 16px; }
.nav-links a { text-decoration: none; color: var(--text-muted); padding: 8px 12px; border-radius: var(--radius); }
.nav-links a:hover, .nav-links a.active { color: var(--primary); background: #eff6ff; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 24px; }

/* Cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; margin-bottom: 32px; }
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.card-active { border-color: var(--success); box-shadow: 0 0 0 1px var(--success); }
.card-header { padding: 12px 16px; font-weight: 600; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }
.card-body { padding: 12px 16px; font-size: 0.9rem; color: var(--text-muted); }
.card-body p { margin: 4px 0; }

/* Status dot */
.status-dot {
    width: 8px; height: 8px; border-radius: 50%; display: inline-block;
}
.status-dot.active { background: var(--success); box-shadow: 0 0 4px var(--success); }
.status-dot.inactive { background: var(--text-muted); }

/* Badge */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    background: #e2e8f0;
    color: var(--text-muted);
}
.badge.active { background: #dcfce7; color: var(--success); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text);
    cursor: pointer;
    font-size: 0.9rem;
    text-decoration: none;
}
.btn:hover { background: var(--bg); }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: #fef2f2; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }

/* Tables */
.data-table { width: 100%; border-collapse: collapse; background: var(--card-bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.data-table th, .data-table td { padding: 10px 16px; text-align: left; border-bottom: 1px solid var(--border); }
.data-table th { background: var(--bg); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; color: var(--text-muted); }
.data-table code { background: #f1f5f9; padding: 2px 6px; border-radius: 4px; font-size: 0.85rem; }

/* Forms */
.form-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; }
.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-weight: 500; margin-bottom: 4px; font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 8px 12px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.9rem;
}
.form-group textarea { min-height: 60px; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.header-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }

/* Tree */
.tree-view { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.tree-node { margin-bottom: 8px; }
.tree-header { display: flex; align-items: center; gap: 8px; padding: 6px 0; }
.tree-rooms { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 8px 16px; }
.room-chip {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 10px; border-radius: 12px; font-size: 0.85rem;
    background: #f1f5f9; border: 1px solid var(--border);
}
.room-chip.active { background: #dcfce7; border-color: var(--success); }

/* Login */
.login-page { display: flex; justify-content: center; align-items: center; min-height: 100vh; background: #1e293b; }
.login-container { background: var(--card-bg); padding: 40px; border-radius: 12px; width: 100%; max-width: 400px; }
.login-container h1 { text-align: center; color: var(--primary); margin-bottom: 4px; }
.login-container .subtitle { text-align: center; color: var(--text-muted); margin-bottom: 24px; }
.error-msg { color: var(--danger); margin-top: 12px; text-align: center; font-size: 0.9rem; }

/* Utilities */
.loading { color: var(--text-muted); font-style: italic; }
.empty { color: var(--text-muted); text-align: center; padding: 24px; }
.text-muted { color: var(--text-muted); }