/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    background-color: var(--background-color);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-hover);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-main);
    margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--spacing-4);
    color: var(--text-muted);
}

/* Layout shell (Sidebar + Topbar) */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--surface-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-normal);
    z-index: var(--z-index-fixed);
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    overflow-x: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar.collapsed .nav-text { opacity: 0; display: none; }
.sidebar.collapsed .sidebar-brand-text { display: none; }
.sidebar.collapsed .sidebar-header h2 { display: none; }

.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: var(--spacing-3) 0;
}

.sidebar.collapsed .nav-icon { margin-right: 0; }

/* Sidebar Brand Block */
.sidebar-brand {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-4);
    gap: var(--spacing-3);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.sidebar-logo {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.brand-logo-img {
    width: 250%;
    height: 250%;
    object-fit: cover;
    object-position: 15% 50%;
    filter: contrast(1.25) saturate(1.4) brightness(1.05);
}

.sidebar-brand-text {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-church-name {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.1;
    white-space: nowrap;
}

.sidebar-church-sub {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    white-space: nowrap;
}

/* Legacy sidebar-header support */
.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-3) 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-2) var(--spacing-4);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    border-left: 3px solid transparent;
    margin: 1px 0;
    border-radius: 0;
    text-decoration: none;
}

.nav-item:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
    text-decoration: none;
}

.nav-item.active {
    background-color: var(--primary-light);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    font-weight: 600;
}

.nav-icon {
    width: 18px;
    height: 18px;
    margin-right: var(--spacing-3);
    flex-shrink: 0;
    opacity: 0.7;
}

.nav-item.active .nav-icon,
.nav-item:hover .nav-icon {
    opacity: 1;
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

.main-content.expanded {
    margin-left: var(--sidebar-collapsed-width);
}

/* Topbar */
.topbar {
    height: var(--header-height);
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-6);
    position: sticky;
    top: 0;
    z-index: var(--z-index-sticky);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.topbar-left, .topbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.icon-btn:hover {
    background-color: var(--background-color);
    color: var(--text-main);
}

/* Page Content */
.page-container {
    padding: var(--spacing-6);
    max-width: var(--content-max-width);
    margin: 0 auto;
    width: 100%;
    flex: 1;
}

/* Cards */
.card {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    padding: var(--spacing-6);
    margin-bottom: var(--spacing-6);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-4);
}

.card-title {
    margin-bottom: 0;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-6);
}

.stat-card {
    padding: var(--spacing-6);
    display: flex;
    align-items: center;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-lg);
    background-color: var(--primary-light);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-4);
}

.stat-content h4 {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 500;
}

.stat-content .value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-4);
}

.form-label,
.form-group > label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    background-color: var(--surface-color);
    color: var(--text-main);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-control:disabled {
    background-color: var(--background-color);
    cursor: not-allowed;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
    gap: var(--spacing-2);
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-light);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-inverse);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: var(--surface-color);
    border-color: var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--background-color);
}

.btn-danger {
    background-color: var(--danger-color);
    color: var(--text-inverse);
}

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626; /* darker red */
}

.btn-block {
    width: 100%;
}

/* Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th, .table td {
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    background-color: var(--surface-hover);
    white-space: nowrap;
}

.table tbody tr {
    transition: background-color var(--transition-fast);
}

.table tbody tr:hover {
    background-color: var(--surface-hover);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    text-transform: uppercase;
}
.badge-success { background: var(--success-bg); color: var(--success-color); }
.badge-warning { background: var(--warning-bg); color: var(--warning-color); }
.badge-danger { background: var(--danger-bg); color: var(--danger-color); }
.badge-info { background: var(--info-bg); color: var(--info-color); }

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(15, 23, 42, 0.5); /* slate-900 / 50% */
    z-index: var(--z-index-modal-backdrop);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.modal-backdrop.active {
    display: flex;
}

.modal,
.modal-content {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    z-index: var(--z-index-modal);
    animation: modalSlideIn 0.2s ease-out;
    overflow: hidden;
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    padding: var(--spacing-4) var(--spacing-6);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    margin: 0;
    font-size: var(--font-size-lg);
}

.modal-body {
    padding: var(--spacing-6);
}

.modal-footer {
    padding: var(--spacing-4) var(--spacing-6);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
    background-color: var(--surface-hover);
    border-bottom-left-radius: var(--border-radius-lg);
    border-bottom-right-radius: var(--border-radius-lg);
}

/* Toasts */
.toast-container {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    z-index: var(--z-index-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.toast {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-4);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    min-width: 300px;
    border-left: 4px solid var(--primary-color);
    animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast.toast-success { border-left-color: var(--success-color); }
.toast.toast-error { border-left-color: var(--danger-color); }
.toast.toast-warning { border-left-color: var(--warning-color); }

@keyframes toastSlideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-6);
    gap: var(--spacing-6);
}

.tab {
    padding: var(--spacing-2) var(--spacing-4);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    font-weight: 500;
    cursor: pointer;
    border: none;
    background: none;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    margin-bottom: -1px;
    border-radius: 0;
}

.tab:hover {
    color: var(--text-main);
}

.tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.2s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--spacing-12) var(--spacing-4);
}

.empty-icon {
    width: 64px;
    height: 64px;
    color: var(--border-color);
    margin: 0 auto var(--spacing-4);
}

/* Utilities */
.text-center { text-align: center; }
.mt-4 { margin-top: var(--spacing-4); }
.mb-4 { margin-bottom: var(--spacing-4); }
.flex { display: flex; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.gap-2 { gap: var(--spacing-2); }
.gap-4 { gap: var(--spacing-4); }
.w-full { width: 100%; }
.text-muted { color: var(--text-muted); }

/* Installer Specific */
.installer-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8);
    background-color: var(--background-color);
}

.installer-card {
    background: var(--surface-color);
    padding: var(--spacing-10);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 650px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: var(--z-index-modal-backdrop);
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-4);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }
    
    .main-content {
        margin-left: 0 !important;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .page-container {
        padding: var(--spacing-4);
    }
    
    .mobile-close-btn {
        display: flex !important;
    }
}

/* --- Search Component --- */
.search-container {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--surface-color, #ffffff);
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: var(--border-radius, 8px);
    padding: 0.5rem 1rem;
}

.search-icon {
    width: 20px;
    height: 20px;
    color: var(--muted-text-color, #6b7280);
    margin-right: 0.5rem;
    flex-shrink: 0;
}

.search-input {
    border: none;
    outline: none;
    background: transparent;
    width: 100%;
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-color, #1f2937);
}
.search-input::placeholder {
    color: var(--muted-text-color, #9ca3af);
}

/* --- Module Header and Breadcrumbs (New UI Standard) --- */
.module-breadcrumb {
    display: flex;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-4);
}

.module-breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.module-breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb-sep {
    margin: 0 var(--spacing-2);
    color: var(--border-color);
}

.breadcrumb-current {
    font-weight: 500;
    color: var(--text-main);
}

.module-page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-6);
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

.header-titles h1 {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-1);
    font-size: var(--font-size-2xl);
    color: var(--text-main);
}

.module-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.header-desc {
    color: var(--text-muted);
    margin: 0;
    font-size: var(--font-size-sm);
}

.branch-context {
    display: inline-block;
    background: var(--surface-hover);
    padding: 2px 8px;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    margin-left: var(--spacing-2);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}