/* ==========================================================================
   PMMS Layout & Page Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   Layout Structure
   -------------------------------------------------------------------------- */
.app-container {
    display: flex;
    min-height: 100vh;
    background: var(--bg-primary);
}

/* --------------------------------------------------------------------------
   Sidebar Navigation
   -------------------------------------------------------------------------- */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--gray-900) 0%, var(--gray-800) 100%);
    color: var(--text-inverse);
    display: flex;
    flex-direction: column;
    z-index: var(--z-sticky);
    transition: width var(--transition-base);
    overflow: hidden;
}

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

.sidebar-header {
    padding: var(--space-5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.sidebar-logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
}

.sidebar-logo-text {
    font-size: var(--text-lg);
    font-weight: 700;
    white-space: nowrap;
}

.sidebar-logo-text span {
    font-weight: 400;
    opacity: 0.7;
}

.sidebar.collapsed .sidebar-logo-text {
    display: none;
}

/* Tenant Info */
.tenant-info {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tenant-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: var(--accent-300);
}

.tenant-name {
    font-size: var(--text-sm);
    font-weight: 500;
    margin-top: var(--space-2);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar.collapsed .tenant-info {
    display: none;
}

/* Navigation */
.sidebar-nav {
    flex: 1;
    padding: var(--space-4) var(--space-3);
    overflow-y: auto;
}

.nav-section {
    margin-bottom: var(--space-6);
}

.nav-section-title {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-400);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-2);
}

.sidebar.collapsed .nav-section-title {
    display: none;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-3);
    border-radius: var(--radius-lg);
    color: var(--gray-300);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: var(--space-1);
    text-decoration: none;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-inverse);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: var(--text-inverse);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.nav-item-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-item-text {
    white-space: nowrap;
}

.sidebar.collapsed .nav-item-text {
    display: none;
}

.nav-item-badge {
    margin-left: auto;
    background: var(--error);
    color: var(--text-inverse);
    font-size: var(--text-xs);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.sidebar.collapsed .nav-item-badge {
    display: none;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: var(--space-2);
    background: rgba(255, 255, 255, 0.05);
    border: none;
    border-radius: var(--radius-lg);
    color: var(--gray-400);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-inverse);
}

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

.sidebar.collapsed~.main-wrapper {
    margin-left: var(--sidebar-collapsed);
}

/* Header */
.main-header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    padding: 0 var(--space-6);
    z-index: var(--z-sticky);
    backdrop-filter: blur(8px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.mobile-menu-btn {
    display: none;
    padding: var(--space-2);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
}

.page-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.header-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Search */
.header-search {
    position: relative;
}

.header-search input {
    width: 280px;
    padding: var(--space-2) var(--space-4);
    padding-left: var(--space-10);
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.header-search input:focus {
    width: 360px;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.header-search-icon {
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
}

/* Notifications */
.header-notifications {
    position: relative;
}

.notification-btn {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.notification-btn:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.notification-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    background: var(--error);
    border-radius: 50%;
    border: 2px solid var(--surface);
}

/* User Menu */
.user-menu {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-menu:hover {
    background: var(--bg-primary);
}

.user-info {
    text-align: right;
}

.user-name {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.user-role {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--space-6);
    max-width: var(--content-max-width);
    width: 100%;
    margin: 0 auto;
}

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

.page-header-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.page-header-subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.page-header-actions {
    display: flex;
    gap: var(--space-3);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
}

.breadcrumb-item {
    color: var(--text-secondary);
}

.breadcrumb-item a {
    color: var(--text-secondary);
}

.breadcrumb-item a:hover {
    color: var(--primary-600);
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 500;
}

.breadcrumb-separator {
    color: var(--text-tertiary);
}

/* --------------------------------------------------------------------------
   Dashboard Stats Grid
   -------------------------------------------------------------------------- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-5);
    margin-bottom: var(--space-6);
}

@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* --------------------------------------------------------------------------
   Content Grid
   -------------------------------------------------------------------------- */
.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-6);
}

.content-grid.equal {
    grid-template-columns: 1fr 1fr;
}

@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
}

/* --------------------------------------------------------------------------
   Modal
   -------------------------------------------------------------------------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--surface);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transform: translateY(20px) scale(0.95);
    transition: all var(--transition-base);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal.large {
    max-width: 900px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5);
    border-bottom: 1px solid var(--border-light);
}

.modal-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--space-5);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-light);
    background: var(--bg-primary);
    border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
}

/* --------------------------------------------------------------------------
   Filter Bar
   -------------------------------------------------------------------------- */
.filter-bar {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-5);
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.filter-group label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    white-space: nowrap;
}

.filter-group select {
    min-width: 150px;
}

.filter-search {
    flex: 1;
    min-width: 200px;
}

/* --------------------------------------------------------------------------
   Empty State
   -------------------------------------------------------------------------- */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-16);
    text-align: center;
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border-radius: var(--radius-full);
    color: var(--text-tertiary);
    font-size: 2rem;
    margin-bottom: var(--space-5);
}

.empty-state-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.empty-state-text {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    max-width: 400px;
    margin-bottom: var(--space-6);
}

/* --------------------------------------------------------------------------
   Timeline
   -------------------------------------------------------------------------- */
.timeline {
    position: relative;
    padding-left: var(--space-8);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--border-light);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-5);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -26px;
    top: 4px;
    width: 12px;
    height: 12px;
    background: var(--surface);
    border: 2px solid var(--primary-500);
    border-radius: 50%;
}

.timeline-dot.success {
    border-color: var(--success);
    background: var(--success-light);
}

.timeline-dot.warning {
    border-color: var(--warning);
    background: var(--warning-light);
}

.timeline-dot.error {
    border-color: var(--error);
    background: var(--error-light);
}

.timeline-content {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.timeline-date {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-bottom: var(--space-2);
}

.timeline-title {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.timeline-text {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Project Status Colors
   -------------------------------------------------------------------------- */
.status-ongoing {
    color: var(--info);
}

.status-completed {
    color: var(--success);
}

.status-suspended {
    color: var(--warning);
}

.status-terminated {
    color: var(--error);
}

.status-expired {
    color: #7c3aed;
}

.badge-ongoing {
    background: var(--info-light);
    color: var(--primary-700);
}

.badge-completed {
    background: var(--success-light);
    color: var(--accent-700);
}

.badge-suspended {
    background: var(--warning-light);
    color: #b45309;
}

.badge-terminated {
    background: var(--error-light);
    color: #b91c1c;
}

.badge-expired {
    background: #ede9fe;
    color: #5b21b6;
}

/* --------------------------------------------------------------------------
   Login Page
   -------------------------------------------------------------------------- */
.login-page {
    min-height: 100vh;
    display: flex;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 50%, var(--primary-900) 100%);
}

.login-left {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--space-8);
    color: var(--text-inverse);
}

.login-branding {
    text-align: center;
    max-width: 480px;
}

.login-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto var(--space-6);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.login-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.login-subtitle {
    font-size: var(--text-lg);
    opacity: 0.8;
    margin-bottom: var(--space-8);
}

.login-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    text-align: left;
}

.login-feature {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    opacity: 0.9;
}

.login-feature-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
}

.login-right {
    width: 480px;
    background: var(--surface);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8);
}

.login-form-container {
    width: 100%;
    max-width: 360px;
}

.login-form-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.login-form-subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
}

.login-form .form-group {
    margin-bottom: var(--space-5);
}

.login-form .form-input {
    padding: var(--space-3) var(--space-4);
}

.login-divider {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-6) 0;
    color: var(--text-tertiary);
    font-size: var(--text-sm);
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-light);
}

.login-footer {
    text-align: center;
    margin-top: var(--space-6);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.login-footer a {
    color: var(--primary-600);
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .login-left {
        display: none;
    }

    .login-right {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-wrapper {
        margin-left: 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .header-search {
        display: none;
    }

    .user-info {
        display: none;
    }

    .main-content {
        padding: var(--space-4);
    }

    .page-header {
        flex-direction: column;
        align-items: stretch;
    }

    .page-header-actions {
        flex-wrap: wrap;
    }
}

/* --------------------------------------------------------------------------
   Toast Notifications
   -------------------------------------------------------------------------- */
.toast-container {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 320px;
    max-width: 420px;
    animation: slideDown var(--transition-base);
}

.toast-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
}

.toast.success .toast-icon {
    background: var(--success-light);
    color: var(--success);
}

.toast.error .toast-icon {
    background: var(--error-light);
    color: var(--error);
}

.toast.warning .toast-icon {
    background: var(--warning-light);
    color: var(--warning);
}

.toast.info .toast-icon {
    background: var(--info-light);
    color: var(--info);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.toast-message {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.toast-close {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-md);
}

.toast-close:hover {
    background: var(--bg-primary);
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Project Cards
   -------------------------------------------------------------------------- */
.project-card {
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    transition: all var(--transition-base);
}

.project-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

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

.project-card-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.project-card-unit {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.project-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    font-size: var(--text-sm);
}

.project-card-meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
}

.project-card-progress {
    margin-bottom: var(--space-3);
}

.project-card-progress-header {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-sm);
    margin-bottom: var(--space-2);
}

.project-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-light);
}

/* --------------------------------------------------------------------------
   Data Table Enhancements
   -------------------------------------------------------------------------- */
.table-actions {
    display: flex;
    gap: var(--space-2);
}

.table-action-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.table-action-btn:hover {
    background: var(--bg-primary);
    color: var(--primary-600);
}

.table-row-selected {
    background: var(--primary-50) !important;
}

.table-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-500);
}