:root {
    --primary: #021EAE;
    --primary-dark: #011880;
    --primary-light: #1a3bc9;
    --primary-subtle: rgba(2, 30, 174, 0.08);
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 72px;
    --header-height: 64px;
    --text-on-primary: #ffffff;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --page-bg: #f4f6fb;
    --card-bg: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: 0.25s ease;
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    color: #1f2937;
    background: var(--page-bg);
}

/* ===== App Layout ===== */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--primary);
    color: var(--text-on-primary);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 1000;
    transition: width var(--transition);
    overflow: hidden;
}

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

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    min-height: 72px;
}

.sidebar-brand .brand-logo {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 10px;
    object-fit: cover;
    display: block;
}

.sidebar-brand .brand-text {
    overflow: hidden;
    white-space: nowrap;
    transition: opacity var(--transition);
}

.sidebar.collapsed .brand-text {
    opacity: 0;
    width: 0;
}

.sidebar-brand .brand-name {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.2;
}

.sidebar-brand .brand-subtitle {
    font-size: 11px;
    opacity: 0.7;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 10px;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-nav .nav-section {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.5;
    padding: 8px 12px 6px;
    white-space: nowrap;
}

.sidebar.collapsed .nav-section {
    opacity: 0;
    height: 0;
    padding: 0;
    overflow: hidden;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 2px;
    transition: background var(--transition), color var(--transition);
    white-space: nowrap;
}

.sidebar-nav .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.sidebar-nav .nav-link.active {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
    font-weight: 500;
}

.sidebar-nav .nav-link .nav-icon {
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    font-size: 16px;
}

.sidebar-nav .nav-link .nav-label {
    transition: opacity var(--transition);
}

.sidebar.collapsed .nav-link .nav-label {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

.sidebar-footer {
    padding: 16px 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 11px;
    opacity: 0.6;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-footer span {
    opacity: 0;
}

.sidebar-toggle {
    position: absolute;
    right: -14px;
    top: 28px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1001;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition);
    font-size: 12px;
}

.sidebar.collapsed .sidebar-toggle {
    transform: rotate(180deg);
}

.main-area {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition);
}

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

.app-header {
    height: var(--header-height);
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-start {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    flex: 1;
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: #fff;
    color: var(--primary);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    font-size: 20px;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.mobile-menu-btn:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition);
}

.sidebar-backdrop.show {
    display: block;
    opacity: 1;
}

.sidebar-mobile-close {
    display: none;
    position: absolute;
    top: 18px;
    right: 16px;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
}

.sidebar-mobile-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

body.sidebar-mobile-open {
    overflow: hidden;
}

.app-header .page-title {
    font-size: 20px;
    font-weight: 600;
    color: #111827;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-menu {
    position: relative;
}

.user-menu-trigger {
    display: flex;
    align-items: center;
    gap: 10px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 6px 14px 6px 6px;
    cursor: pointer;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.user-menu-trigger:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

.user-menu-trigger .user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.25;
}

.user-menu-trigger .user-name {
    font-size: 14px;
    font-weight: 500;
    color: #374151;
}

.user-menu-trigger .user-role {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: capitalize;
}

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    min-width: 180px;
    display: none;
    overflow: hidden;
}

.user-menu-dropdown.show {
    display: block;
}

.user-menu-dropdown a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    color: #374151;
    text-decoration: none;
    font-size: 14px;
    transition: background var(--transition);
}

.user-menu-dropdown a:hover {
    background: var(--primary-subtle);
    color: var(--primary);
}

.app-content {
    flex: 1;
    padding: 28px;
}

/* ===== Dashboard Cards ===== */
.stat-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 16px;
}

.stat-card .stat-icon.primary { background: var(--primary-subtle); color: var(--primary); }
.stat-card .stat-icon.success { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.stat-card .stat-icon.warning { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.stat-card .stat-icon.info { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: #111827;
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 6px;
}

.content-card {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.content-card .card-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.content-card .card-body {
    padding: 24px;
}

.mock-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 640px;
}

.content-card .card-body.p-0 {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.mock-table th {
    text-align: left;
    padding: 10px 16px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    background: #f9fafb;
}

.mock-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.mock-table tr:last-child td {
    border-bottom: none;
}

.badge-status {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge-status.active { background: rgba(16, 185, 129, 0.1); color: #059669; }
.badge-status.inactive { background: rgba(107, 114, 128, 0.1); color: #6b7280; }
.badge-status.pending { background: rgba(245, 158, 11, 0.1); color: #d97706; }

.btn-primary-custom {
    background: var(--primary);
    border: none;
    color: #fff;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: background var(--transition);
}

.btn-primary-custom:hover {
    background: var(--primary-dark);
    color: #fff;
}

/* ===== Login Page ===== */
.auth-page {
    display: flex;
    min-height: 100vh;
}

.auth-form-side {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: #fff;
}

.auth-form-container {
    width: 100%;
    max-width: 400px;
}

.auth-form-container h1 {
    font-size: 28px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 8px;
}

.auth-form-container .auth-subtitle {
    color: var(--text-muted);
    margin-bottom: 36px;
    font-size: 15px;
}

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

.auth-form label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 6px;
}

.auth-form .form-control {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color var(--transition), box-shadow var(--transition);
}

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

.auth-form .btn-login {
    width: 100%;
    padding: 13px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 8px;
    transition: background var(--transition);
}

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

.auth-brand-side {
    flex: 1;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.auth-brand-side::before {
    content: "";
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    top: -100px;
    right: -100px;
}

.auth-brand-side::after {
    content: "";
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    bottom: -80px;
    left: -60px;
}

.auth-brand-content {
    position: relative;
    z-index: 1;
    max-width: 420px;
    text-align: center;
}

.auth-brand-logo {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    object-fit: cover;
    display: block;
    margin: 0 auto 28px;
}

.auth-brand-content h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.auth-brand-content p {
    font-size: 16px;
    line-height: 1.7;
    opacity: 0.85;
}

@media (max-width: 991.98px) {
    .mobile-menu-btn {
        display: inline-flex;
    }

    .sidebar-brand {
        padding-right: 52px;
    }

    .sidebar-mobile-close {
        display: inline-flex;
    }

    .sidebar-toggle {
        display: none;
    }

    .sidebar {
        transform: translateX(-100%);
        width: min(var(--sidebar-width), 88vw) !important;
        box-shadow: var(--shadow-md);
    }

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

    .sidebar.collapsed {
        width: min(var(--sidebar-width), 88vw) !important;
    }

    .sidebar.collapsed .brand-text,
    .sidebar.collapsed .nav-link .nav-label,
    .sidebar.collapsed .sidebar-footer span {
        opacity: 1;
        width: auto;
        overflow: visible;
    }

    .sidebar.collapsed .nav-section {
        opacity: 0.5;
        height: auto;
        padding: 8px 12px 6px;
        overflow: visible;
    }

    .main-area {
        margin-left: 0 !important;
    }

    .app-header {
        padding: 0 16px;
    }

    .app-content {
        padding: 16px;
    }

    .content-card .card-header,
    .content-card .card-body {
        padding-left: 16px;
        padding-right: 16px;
    }

    .content-card .card-header {
        align-items: flex-start;
    }

    .user-menu-trigger .user-info {
        display: none;
    }

    .user-menu-trigger {
        padding: 6px;
    }

    .stat-card {
        padding: 18px;
    }

    .stat-card .stat-value {
        font-size: 24px;
    }

    .image-picker-preview {
        width: 100%;
        max-width: 100%;
    }

    .survey-question-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
}

@media (max-width: 768px) {
    .auth-brand-side {
        display: none;
    }

    .auth-form-side {
        padding: 24px 20px;
    }
}

@media (max-width: 575.98px) {
    .app-header .page-title {
        font-size: 17px;
    }

    .content-card .card-header .btn-primary-custom {
        width: 100%;
        justify-content: center;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .content-card .card-header .d-flex {
        width: 100%;
        flex-direction: column;
    }

    .content-card .card-header .d-flex .btn,
    .content-card .card-header .d-flex a {
        width: 100%;
    }
}

/* ===== News Image Picker ===== */
.image-picker {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.image-picker-preview {
    width: 280px;
    aspect-ratio: 4 / 3;
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background: #f9fafb;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.image-picker-preview img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.image-picker-preview.empty {
    border-style: dashed;
}

.image-picker-placeholder {
    text-align: center;
    color: var(--text-muted);
    padding: 16px;
}

.image-picker-placeholder i {
    font-size: 32px;
    display: block;
    margin-bottom: 8px;
}

.image-picker-placeholder span {
    font-size: 13px;
}

.image-picker-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 8px;
}

.image-upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    aspect-ratio: 4 / 3;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
    overflow: hidden;
    position: relative;
    background: #f9fafb;
}

.image-upload-zone:hover,
.image-upload-zone.dragover {
    border-color: var(--primary);
    background: var(--primary-subtle);
}

.image-upload-zone-content {
    text-align: center;
    padding: 32px;
    color: var(--text-muted);
}

.image-upload-zone-content i {
    font-size: 40px;
    color: var(--primary);
    display: block;
    margin-bottom: 12px;
}

.image-upload-zone-content p {
    margin-bottom: 6px;
    color: #374151;
    font-weight: 500;
}

#modalImagePreview {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    padding: 12px;
}

/* ===== Survey Form ===== */
.survey-question-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    background: #fafbfc;
}

.survey-question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}