/* Reset & Base */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font); background: var(--color-bg); color: var(--color-text); min-height: 100vh; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }

/* Login Page */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 40px; width: 380px; max-width: 90%; }
.login-card h1 { font-size: 24px; margin-bottom: 8px; color: var(--color-primary); }
.login-card p { color: var(--color-text-secondary); margin-bottom: 24px; font-size: 14px; }

/* Layout */
.app-layout { display: flex; min-height: 100vh; }
.sidebar {
    width: var(--sidebar-width); background: var(--color-surface); border-right: 1px solid var(--color-border);
    display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0; z-index: 100;
}
.sidebar-brand { padding: 20px; font-size: 18px; font-weight: 700; color: var(--color-primary); border-bottom: 1px solid var(--color-border); }
.sidebar-nav { flex: 1; padding: 12px 0; overflow-y: auto; }
.sidebar-nav a {
    display: flex; align-items: center; gap: 10px; padding: 10px 20px; color: var(--color-text-secondary);
    font-size: 14px; transition: var(--transition); border-left: 3px solid transparent;
}
.sidebar-nav a:hover, .sidebar-nav a.active { color: var(--color-text); background: var(--color-surface-hover); border-left-color: var(--color-primary); }
.sidebar-footer { padding: 16px 20px; border-top: 1px solid var(--color-border); font-size: 13px; color: var(--color-text-muted); }
.sidebar-footer a { color: var(--color-text-secondary); }

.main-content { margin-left: var(--sidebar-width); flex: 1; padding: 24px; }

/* Page Header */
.page-header { margin-bottom: 24px; }
.page-header h2 { font-size: 22px; font-weight: 600; }
.page-header p { color: var(--color-text-secondary); font-size: 14px; margin-top: 4px; }

/* Cards */
.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 20px; }
.card + .card { margin-top: 16px; }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 20px; }
.stat-card .stat-value { font-size: 28px; font-weight: 700; color: var(--color-primary); }
.stat-card .stat-label { font-size: 13px; color: var(--color-text-secondary); margin-top: 4px; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; font-weight: 600; color: var(--color-text-secondary); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px; }
.form-input, .form-select, .form-textarea {
    width: 100%; padding: 10px 14px; background: var(--color-bg); border: 1px solid var(--color-border);
    border-radius: var(--radius); color: var(--color-text); font-size: 14px; font-family: var(--font);
    transition: var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--color-primary); }
.form-textarea { min-height: 100px; resize: vertical; }
.form-hint { font-size: 12px; color: var(--color-text-muted); margin-top: 4px; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 6px; padding: 9px 18px; border: none; border-radius: var(--radius);
    font-size: 14px; font-weight: 500; cursor: pointer; transition: var(--transition); font-family: var(--font);
}
.btn-primary { background: var(--color-primary); color: #000; }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: var(--color-danger-hover); }
.btn-ghost { background: transparent; color: var(--color-text-secondary); border: 1px solid var(--color-border); }
.btn-ghost:hover { color: var(--color-text); border-color: var(--color-text-secondary); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn + .btn { margin-left: 8px; }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; padding: 10px 14px; font-size: 12px; font-weight: 600; color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--color-border); }
td { padding: 10px 14px; border-bottom: 1px solid var(--color-border); }
tr:hover td { background: var(--color-surface-hover); }

/* Badges */
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-success { background: rgba(46,213,115,0.15); color: var(--color-success); }
.badge-danger { background: rgba(255,71,87,0.15); color: var(--color-danger); }
.badge-warning { background: rgba(255,165,2,0.15); color: var(--color-warning); }
.badge-info { background: rgba(30,144,255,0.15); color: var(--color-info); }

/* Toast */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast { padding: 12px 20px; border-radius: var(--radius); font-size: 14px; color: #fff; animation: slideIn 0.3s ease; min-width: 250px; }
.toast-success { background: #2d8c5a; }
.toast-error { background: #c0392b; }
.toast-info { background: #2874a6; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Pagination */
.pagination { display: flex; align-items: center; gap: 8px; margin-top: 16px; justify-content: center; }
.pagination button { padding: 6px 12px; background: var(--color-surface); border: 1px solid var(--color-border); color: var(--color-text); border-radius: var(--radius); cursor: pointer; font-size: 13px; }
.pagination button:hover { border-color: var(--color-primary); }
.pagination button.active { background: var(--color-primary); color: #000; border-color: var(--color-primary); }
.pagination button:disabled { opacity: 0.3; cursor: not-allowed; }
.pagination span { font-size: 13px; color: var(--color-text-secondary); }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); width: 500px; max-width: 90%; max-height: 90vh; overflow-y: auto; }
.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--color-border); font-size: 16px; font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
.modal-header .close-btn { background: none; border: none; color: var(--color-text-secondary); cursor: pointer; font-size: 20px; }
.modal-body { padding: 20px; }
.modal-footer { padding: 16px 20px; border-top: 1px solid var(--color-border); display: flex; justify-content: flex-end; gap: 8px; }

/* Settings tabs */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--color-border); margin-bottom: 20px; }
.tab { padding: 10px 20px; font-size: 14px; color: var(--color-text-secondary); cursor: pointer; border-bottom: 2px solid transparent; transition: var(--transition); }
.tab:hover { color: var(--color-text); }
.tab.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Truncate */
.truncate { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); transition: var(--transition); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}