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

:root {
    --bg: #f5f6fa;
    --sidebar: #1e2a38;
    --sidebar-hover: #2c3e50;
    --primary: #3498db;
    --primary-dark: #2980b9;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --text: #2c3e50;
    --text-light: #7f8c8d;
    --border: #dfe6e9;
    --card-bg: #fff;
    --radius: 8px;
}

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

.hidden { display: none !important; }

/* Login */
.login-box {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    padding: 3rem;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: 0 4px 24px rgba(0,0,0,0.1);
}
.login-box h1 { font-size: 2rem; color: var(--primary); margin-bottom: 0.5rem; }
.login-box p { color: var(--text-light); margin-bottom: 2rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
    color: var(--text);
    cursor: pointer;
    font-size: 0.875rem;
    text-decoration: none;
    transition: all 0.15s;
}
.btn:hover { background: var(--bg); }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-sm { padding: 0.25rem 0.75rem; font-size: 0.8rem; }
.btn-lg { padding: 0.75rem 2rem; font-size: 1rem; }
.btn-spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin 0.6s linear infinite; vertical-align: middle; margin-right: 4px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Action menu (3-dot dropdown) */
.action-menu-btn { font-size: 1.2rem; line-height: 1; padding: 0.2rem 0.5rem; letter-spacing: 1px; background: transparent; border: 1px solid transparent; color: var(--text-light); cursor: pointer; border-radius: 4px; }
.action-menu-btn:hover { background: var(--bg); border-color: var(--border); color: var(--text); }
.action-menu { position: absolute; right: 0; top: 100%; background: #fff; border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,0.12); z-index: 100; min-width: 150px; padding: 4px 0; }
.action-menu-item { display: block; width: 100%; padding: 8px 16px; border: none; background: none; text-align: left; cursor: pointer; font-size: 0.85rem; color: var(--text); }
.action-menu-item:hover { background: var(--bg); }

/* Layout */
#main-screen { display: flex; min-height: 100vh; }

.sidebar {
    width: 240px;
    background: var(--sidebar);
    color: #ecf0f1;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; bottom: 0;
}
.sidebar-header { padding: 1.5rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-header h2 { font-size: 1.25rem; }
.user-email { font-size: 0.75rem; color: #95a5a6; word-break: break-all; }

.nav-links { list-style: none; padding: 0.5rem 0; flex: 1; }
.nav-links a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: #bdc3c7;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.15s;
}
.nav-links a:hover, .nav-links a.active {
    background: var(--sidebar-hover);
    color: #fff;
}
.nav-links a.active { border-left: 3px solid var(--primary); }

.sidebar-footer { padding: 1rem 1.5rem; border-top: 1px solid rgba(255,255,255,0.1); }
.sidebar-footer .btn { width: 100%; text-align: center; color: #bdc3c7; border-color: rgba(255,255,255,0.2); background: transparent; }
.sidebar-footer .btn:hover { background: rgba(255,255,255,0.1); color: #fff; }

.content { margin-left: 240px; padding: 2rem; flex: 1; min-width: 0; }

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.card-header h3 { font-size: 1.1rem; }

/* Stats row */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.stat-card .label { font-size: 0.8rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-card .value { font-size: 1.75rem; font-weight: 700; margin-top: 0.25rem; }
.stat-card .sub { font-size: 0.8rem; color: var(--text-light); margin-top: 0.25rem; }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th { text-align: left; padding: 0.75rem; border-bottom: 2px solid var(--border); color: var(--text-light); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; white-space: nowrap; }
td { padding: 0.75rem; border-bottom: 1px solid var(--border); }
tr:hover td { background: #f8f9fa; }

/* Badges */
.badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-active { background: #d4edda; color: #155724; }
.badge-inactive { background: #f8d7da; color: #721c24; }
.badge-hidden { background: #fff3cd; color: #856404; }
.badge-primary { background: #cce5ff; color: #004085; }
.badge-format { background: #e2e3e5; color: #383d41; }
.badge-full { background: #d1ecf1; color: #0c5460; }
.badge-partial { background: #fff3cd; color: #856404; }

/* Page header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.page-header h2 { font-size: 1.5rem; }

/* Forms */
.form-row { display: flex; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.form-group { display: flex; flex-direction: column; flex: 1; min-width: 200px; }
.form-group label { font-size: 0.8rem; font-weight: 600; color: var(--text-light); margin-bottom: 0.25rem; text-transform: uppercase; letter-spacing: 0.03em; }
input, select, textarea {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-family: inherit;
}
input:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba(52,152,219,0.2); }

/* Filter bar */
.filter-bar {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}
.filter-bar .form-group { min-width: 150px; flex: 0 0 auto; }
.filter-bar input[type="text"] { width: 250px; }

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}
.modal {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 2rem;
    width: 90%;
    max-width: 560px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.modal h3 { margin-bottom: 1.25rem; }
.modal-actions { display: flex; gap: 0.5rem; justify-content: flex-end; margin-top: 1.5rem; }

/* Loading */
.loading { text-align: center; padding: 3rem; color: var(--text-light); }
.loading::after { content: ''; display: inline-block; width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.6s linear infinite; margin-left: 0.5rem; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Clickable rows */
.clickable { cursor: pointer; }
.clickable:hover td { background: #e8f4fd; }

/* Pagination */
.pagination { display: flex; gap: 0.5rem; justify-content: center; margin-top: 1rem; }

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 0.75rem 1.25rem;
    background: var(--text);
    color: #fff;
    border-radius: var(--radius);
    font-size: 0.875rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    z-index: 200;
    animation: fadeInUp 0.3s ease-out;
}
.toast.error { background: var(--danger); }
.toast.success { background: var(--success); }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Detail view */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}
.detail-item .label { font-size: 0.75rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.03em; }
.detail-item .value { font-size: 1rem; margin-top: 0.15rem; }

/* Breadcrumb */
.breadcrumb { font-size: 0.85rem; color: var(--text-light); margin-bottom: 1rem; }
.breadcrumb a { color: var(--primary); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }