:root, [data-theme="light"] {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --warning: #ca8a04;
    --danger: #dc2626;
    --bg: #f1f5f9;
    --sidebar-bg: #1e293b;
    --sidebar-text: #94a3b8;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
}

[data-theme="dark"] {
    --bg: #0f172a;
    --card-bg: #1e293b;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --border: #334155;
    --sidebar-bg: #020617;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 240px;
    height: 100vh;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 { color: white; font-size: 1.25rem; }
.sidebar-header .version { font-size: 0.75rem; opacity: 0.6; }

.nav-menu {
    list-style: none;
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

.nav-menu li a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-menu li a:hover, .nav-menu li a.active {
    background: rgba(255,255,255,0.1);
    color: white;
}

.nav-section {
    padding: 1rem 1.5rem 0.5rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.5;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
}

.sidebar-footer a { color: var(--sidebar-text); text-decoration: none; }
.sidebar-footer a:hover { color: white; }
.sidebar-footer .logout { color: var(--danger); }

/* Main Content */
main { padding: 2rem; }
main.with-sidebar { margin-left: 240px; }

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 1.5rem;
}

.card h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

/* Grid */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* Service Cards */
.service-card {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: var(--text);
    display: block;
}

.service-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.service-card .icon { font-size: 2rem; margin-bottom: 0.75rem; }
.service-card h3 { font-size: 1rem; margin-bottom: 0.25rem; }
.service-card p { font-size: 0.875rem; color: var(--text-muted); }
.service-card .status { font-size: 0.75rem; margin-top: 0.75rem; }
.service-card .status.online { color: var(--success); }
.service-card .status.offline { color: var(--danger); }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 500; font-size: 0.875rem; }

input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); color: white; }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.75rem; }

/* Tables */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
th { background: var(--bg); font-weight: 600; font-size: 0.875rem; }

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-admin { background: #fef3c7; color: #92400e; }
.badge-data_steward { background: #dbeafe; color: #1e40af; }
.badge-analyst { background: #dcfce7; color: #166534; }
.badge-viewer { background: #f1f5f9; color: #475569; }

/* Flash Messages */
.flash-messages { margin-bottom: 1rem; }
.flash {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 0.5rem;
}

.flash.success { background: #dcfce7; color: #166534; }
.flash.error { background: #fee2e2; color: #991b1b; }

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--sidebar-bg) 0%, #334155 100%);
}

.login-box {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.login-box h1 {
    text-align: center;
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.login-box .subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 0.875rem;
}

.login-box .btn { width: 100%; }

/* iFrame Container */
.iframe-container {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.iframe-container iframe {
    width: 100%;
    height: calc(100vh - 140px);
    border: none;
}

.iframe-header {
    padding: 1rem 1.5rem;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Stats */
.stat-card {
    text-align: center;
    padding: 1.5rem;
}

.stat-card .value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-card .label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Toggle Switch */
.toggle {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

.toggle input { opacity: 0; width: 0; height: 0; }

.toggle .slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: #cbd5e1;
    border-radius: 24px;
    transition: 0.3s;
}

.toggle .slider:before {
    content: "";
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: 0.3s;
}

.toggle input:checked + .slider { background: var(--success); }
.toggle input:checked + .slider:before { transform: translateX(24px); }

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.modal.active { display: flex; }

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

/* Dark Mode Overrides */
[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background: #0f172a;
    color: var(--text);
    border-color: var(--border);
}

[data-theme="dark"] th { background: #0f172a; }
[data-theme="dark"] .login-box { background: var(--card-bg); }
[data-theme="dark"] .modal-content { background: var(--card-bg); }
[data-theme="dark"] .service-card { background: var(--card-bg); }

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    cursor: pointer;
    color: var(--sidebar-text);
    font-size: 0.875rem;
}

.theme-toggle:hover { color: white; }