/* ================================================================
   Stylesheet
   ================================================================

   Table of Contents:
   1. Settings .......... CSS Variables, Fonts
   2. Base .............. Reset, Root Elements
   3. Layout ............ App Container, Sidebar, Main Content
   4. Components ........ Cards, Buttons, Badges, Alerts, Forms
   5. Tables ............ Table Styles
   6. Utilities ......... Empty State, Helpers
   7. Pages ............. Login, Dashboard (page-specific)
   8. Responsive ........ Media Queries
   9. Print ............. Print Styles

   ================================================================ */

/* ================================================================
   1. SETTINGS
   ================================================================ */

:root {
    /* Colors - Primary */
    --primary: #BC0003;
    --primary-dark: #8A0002;
    --primary-light: rgba(188, 0, 3, 0.1);

    /* Colors - Secondary */
    --secondary: #154C79;
    --secondary-dark: #0D3A5C;
    --secondary-light: rgba(21, 76, 121, 0.1);

    /* Colors - Status */
    --success: #22C55E;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;
    --dark: #3C3C3C;

    /* Colors - Neutrals */
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;

    /* Transitions */
    --transition: all 0.2s ease;
}


/* ================================================================
   2. BASE
   ================================================================ */

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

body {
    font-family: 'Roboto Slab', Georgia, 'Times New Roman', serif;
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
}


/* ================================================================
   3. LAYOUT
   ================================================================ */

.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--gray-200);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 32px;
    color: var(--primary);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--gray-800);
    letter-spacing: 1px;
}

.logo-subtitle {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

.sidebar-nav {
    padding: 16px 12px;
}

.nav-section {
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 16px 12px 8px;
    margin-top: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--gray-600);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

.nav-item.active {
    background: var(--primary-light);
    color: var(--primary);
}

.nav-item .material-icons-outlined {
    font-size: 20px;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.content-header {
    height: var(--header-height);
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-600);
}

.page-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-800);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--gray-500);
}

.logout-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-600);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
}

.logout-link:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

.logout-link .material-icons-outlined {
    font-size: 20px;
}

.content-body {
    padding: 24px;
}


/* ================================================================
   4. COMPONENTS
   ================================================================ */

.card {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--gray-200);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-800);
}

.card-body {
    padding: 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

.stat-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon.primary { background: var(--primary-light); color: var(--primary); }
.stat-icon.secondary { background: var(--secondary-light); color: var(--secondary); }
.stat-icon.success { background: rgba(34, 197, 94, 0.1); color: var(--success); }
.stat-icon.warning { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.stat-icon.dark { background: rgba(60, 60, 60, 0.1); color: var(--dark); }

.stat-info h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-800);
}

.stat-info p {
    font-size: 1rem;
    color: var(--gray-500);
}

.section {
    margin-top: 32px;
}

.section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 16px;
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.quick-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 16px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--gray-700);
    transition: var(--transition);
}

.quick-action:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.quick-action .material-icons-outlined {
    font-size: 32px;
    color: var(--gray-500);
    transition: var(--transition);
}

.quick-action:hover .material-icons-outlined {
    color: var(--primary);
}

.quick-action span:last-child {
    font-size: 14px;
    font-weight: 500;
}


/* ================================================================
   5. TABLES
   ================================================================ */

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

th {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--gray-50);
}

td {
    font-size: 14px;
    color: var(--gray-700);
}

tr:hover {
    background: var(--gray-50);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--secondary);
    color: var(--white);
}

.btn-secondary:hover {
    background: var(--secondary-dark);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-600);
}

.btn-outline:hover {
    background: var(--gray-100);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-icon {
    padding: 8px;
}

.actions {
    display: flex;
    gap: 8px;
}

.action-btn {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.action-btn .material-icons-outlined {
    font-size: 18px;
}

.action-btn.edit {
    background: var(--secondary-light);
    color: var(--secondary);
}

.action-btn.edit:hover {
    background: var(--secondary);
    color: var(--white);
}

.action-btn.delete {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.action-btn.delete:hover {
    background: var(--danger);
    color: var(--white);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge.active, .badge.operational {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.badge.inactive, .badge.retired {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.badge.not-applicable {
    background: rgba(107, 114, 128, 0.1);
    color: var(--gray-500);
}

.badge.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge.in-progress {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
}

.badge.completed {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
}

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

select.form-control {
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert.success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.alert.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}


/* ================================================================
   6. UTILITIES
   ================================================================ */

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--gray-500);
}

.empty-state .material-icons-outlined {
    font-size: 48px;
    color: var(--gray-300);
    margin-bottom: 12px;
}


/* ================================================================
   7. PAGES
   ================================================================ */

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('../images/login-background.jpg') no-repeat center center;
    background-size: cover;
    padding: 20px;
    position: relative;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 0;
}

.login-card {
    position: relative;
    z-index: 1;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 720px;
    overflow: hidden;
}

.login-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 40px 32px;
    text-align: center;
}

.login-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.login-logo .material-icons-outlined {
    font-size: 48px;
    color: var(--white);
}

.login-logo-title {
    font-size: 12px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.8);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.login-logo-subtitle {
    font-size: 22px;
    font-weight: 600;
    color: var(--white);
}

.login-body {
    padding: 40px 32px;
}

.login-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 8px;
    text-align: center;
}

.login-subtitle {
    font-size: 14px;
    color: var(--gray-500);
    text-align: center;
    margin-bottom: 32px;
}

.login-form .form-group {
    margin-bottom: 24px;
}

.login-form .form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.input-icon-wrapper {
    position: relative;
}

.input-icon-wrapper .material-icons-outlined {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 20px;
}

.input-icon-wrapper .form-control.login-input {
    padding: 14px;
    padding-left: 44px;
    font-size: 15px;
}

.input-icon-wrapper .form-control.login-input.has-toggle {
    padding-right: 48px;
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    font-size: 14px;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-600);
    cursor: pointer;
}

.remember-me input {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

.forgot-password {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 500;
}

.forgot-password:hover {
    text-decoration: underline;
}

.btn-login {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
}

.login-footer {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
    margin-top: 32px;
}

.login-footer p {
    font-size: 14px;
    color: var(--gray-500);
}

.login-footer a {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 500;
}

.login-footer a:hover {
    text-decoration: underline;
}

.password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-400);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle .material-icons-outlined {
    position: static;
    transform: none;
    font-size: 20px;
}

.password-toggle:hover {
    color: var(--gray-600);
}


/* ================================================================
   8. RESPONSIVE
   ================================================================ */

/* Breakpoint: 768px – sync with App.MOBILE_BREAKPOINT in app.js */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

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

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

    .menu-toggle {
        display: block;
    }
}


/* ================================================================
   9. PRINT
   ================================================================ */

@media print {
    .sidebar,
    .content-header,
    .menu-toggle,
    .btn,
    .action-btn,
    .quick-actions {
        display: none !important;
    }

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

    .content-body {
        padding: 0;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    body {
        background: white;
        color: black;
    }

    a {
        text-decoration: none;
        color: inherit;
    }
}