/* =========================================
   Task Tracker - Main Stylesheet
   Blue Professional Theme - Mobile Responsive
   ========================================= */

/* CSS Variables */
:root {
    --primary-color: #1e3c72;
    --primary-light: #2a5298;
    --primary-dark: #152a4f;
    --secondary-color: #4a90d9;
    --accent-color: #64b5f6;

    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;

    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --text-white: #ffffff;

    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-dark: #1e3c72;

    --border-color: #e0e6ed;
    --border-radius: 8px;
    --border-radius-lg: 16px;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);

    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

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

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

/* =========================================
   Authentication Pages
   ========================================= */

.auth-page {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    animation: fadeInUp 0.5s ease;
}

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

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    color: var(--primary-color);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.auth-form h2 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-bottom: 20px;
    text-align: center;
}

.form-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: center;
    margin-bottom: 20px;
}

.auth-links {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
}

.auth-links .divider {
    color: var(--text-light);
    margin: 0 10px;
}

/* =========================================
   Forms
   ========================================= */

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: var(--font-family);
    transition: var(--transition);
    background: var(--bg-secondary);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 60, 114, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
    cursor: pointer;
}

.remember-me {
    margin-top: -5px;
}

/* =========================================
   Buttons
   ========================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--text-white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(30, 60, 114, 0.4);
    color: var(--text-white);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

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

.btn-success:hover {
    background: #218838;
    color: var(--text-white);
}

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

.btn-danger:hover {
    background: #c82333;
    color: var(--text-white);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn-icon {
    padding: 8px;
    min-width: 40px;
}

/* =========================================
   Header & Navigation
   ========================================= */

.main-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--text-white);
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
}

.logo:hover {
    color: var(--text-white);
    opacity: 0.9;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-info {
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    color: var(--text-white);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-white);
}

.nav-link-logout {
    background: rgba(255, 255, 255, 0.1);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-white);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-nav {
    display: none;
    background: var(--primary-dark);
    padding: 20px;
    flex-direction: column;
    gap: 10px;
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav .nav-link {
    display: block;
    padding: 12px 16px;
}

/* =========================================
   Main Content
   ========================================= */

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.page-title-sub {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: normal;
}

/* =========================================
   Search & Filter Bar
   ========================================= */

.search-filter-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.search-box {
    flex: 1;
    min-width: 200px;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-box::before {
    content: "🔍";
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.1rem;
}

.filter-dropdown {
    position: relative;
}

.filter-dropdown select {
    padding: 12px 40px 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--bg-secondary);
    cursor: pointer;
    appearance: none;
    min-width: 150px;
}

.filter-dropdown::after {
    content: "▼";
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.7rem;
    color: var(--text-secondary);
    pointer-events: none;
}

/* =========================================
   Task Grid
   ========================================= */

.task-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.task-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.task-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.task-edit-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    z-index: 10;
}

.task-edit-btn:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

.task-delete-btn {
    position: absolute;
    top: 10px;
    right: 48px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(220, 53, 69, 0.8);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    z-index: 10;
}

.task-delete-btn:hover {
    background: var(--danger-color);
    transform: scale(1.1);
}

.task-card-image {
    width: 100%;
    height: 140px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
}

.task-card-image.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.5);
}

.task-card-body {
    padding: 16px;
}

.task-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.task-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.task-card-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Progress Bar */
.progress-bar {
    height: 28px;
    background: var(--danger-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    position: relative;
}

/* Progress bar for tasks with no subtasks (0%) */
.progress-bar.no-subtasks {
    background: #6c757d;
}

.progress-bar.no-subtasks .progress-bar-text {
    color: white;
}

.progress-bar-fill {
    height: 100%;
    background: var(--success-color);
    transition: width 0.5s ease;
}

.progress-bar-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-white);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    white-space: nowrap;
}

/* =========================================
   Floating Action Button
   ========================================= */

.fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--text-white);
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 100;
    display: none;
}

.fab:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(30, 60, 114, 0.5);
}

/* =========================================
   Modal
   ========================================= */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: var(--transition);
}

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

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    line-height: 1;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--danger-color);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* =========================================
   Sub-tasks List
   ========================================= */

.subtask-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

.subtask-header {
    padding: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.subtask-header:hover {
    background: var(--bg-primary);
}

.subtask-toggle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding-top: 2px;
    transition: var(--transition);
}

.subtask-card.expanded .subtask-toggle {
    transform: rotate(90deg);
}

.subtask-info {
    flex: 1;
}

.subtask-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.subtask-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.subtask-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

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

.subtask-body {
    display: none;
    padding: 0 16px 16px;
    border-top: 1px solid var(--border-color);
}

.subtask-card.expanded .subtask-body {
    display: block;
}

.subtask-description {
    padding: 16px;
    background: #ffffff;
    border-radius: var(--border-radius);
    margin-bottom: 16px;
    color: var(--text-secondary);
    border-left: 3px solid var(--primary-color);
}

.subtask-description a {
    color: var(--primary-color);
    text-decoration: underline;
}

.subtask-attachments {
    margin-bottom: 16px;
}

.subtask-attachments h4,
.subtask-urls h4,
.comments-section h4 {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.attachment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 8px;
}

.attachment-thumb {
    width: 100%;
    height: 80px;
    object-fit: cover;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.attachment-thumb:hover {
    transform: scale(1.05);
}

.url-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.url-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    padding: 8px 12px;
    background: #ffffff;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.url-item a {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--primary-color);
    text-decoration: underline;
}

.url-item a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* =========================================
   Comments
   ========================================= */

.comments-section {
    margin-top: 16px;
}

.comment-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 16px;
}

.comment-item {
    padding: 12px;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
}

.comment-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.comment-author {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.comment-date {
    font-size: 0.8rem;
    color: var(--text-light);
}

.comment-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    white-space: pre-wrap;
}

.comment-form {
    display: flex;
    gap: 8px;
}

.comment-form textarea {
    flex: 1;
    min-height: 60px;
    resize: none;
}

/* =========================================
   Badges
   ========================================= */

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-admin {
    background: var(--warning-color);
    color: var(--text-primary);
}

.badge-priority-1 { background: #dc3545; color: white; }
.badge-priority-2 { background: #fd7e14; color: white; }
.badge-priority-3 { background: #ffc107; color: black; }
.badge-priority-4 { background: #20c997; color: white; }
.badge-priority-5 { background: #28a745; color: white; }

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

/* =========================================
   Admin Dashboard
   ========================================= */

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.users-table {
    width: 100%;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

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

.users-table th,
.users-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.users-table th {
    background: var(--bg-primary);
    font-weight: 600;
    color: var(--text-primary);
}

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

.users-table tr:hover td {
    background: var(--bg-primary);
}

/* =========================================
   Alerts
   ========================================= */

.alert {
    padding: 14px 18px;
    border-radius: var(--border-radius);
    margin-bottom: 16px;
    font-size: 0.95rem;
    animation: fadeIn 0.3s ease;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left: 4px solid var(--success-color);
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: #cce5ff;
    color: #004085;
    border-left: 4px solid var(--info-color);
}

/* =========================================
   Image Upload
   ========================================= */

.image-upload-container {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.image-upload-container:hover {
    border-color: var(--primary-color);
    background: rgba(30, 60, 114, 0.02);
}

.image-upload-container.dragover {
    border-color: var(--primary-color);
    background: rgba(30, 60, 114, 0.05);
}

.image-upload-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.image-preview {
    max-width: 200px;
    max-height: 150px;
    object-fit: cover;
    border-radius: var(--border-radius);
    margin-top: 12px;
}

.multi-image-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.multi-image-preview img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

/* =========================================
   Members Selection
   ========================================= */

.members-select {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.member-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-primary);
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.member-chip:hover {
    background: var(--border-color);
}

.member-chip.selected {
    background: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
}

/* =========================================
   Empty State
   ========================================= */

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    margin-bottom: 8px;
    color: var(--text-primary);
}

/* =========================================
   Loading
   ========================================= */

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* =========================================
   Utilities
   ========================================= */

.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

/* =========================================
   View Toggle
   ========================================= */

.view-toggle {
    display: flex;
    gap: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 4px;
}

.view-toggle-btn {
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-family);
    text-decoration: none;
    display: inline-block;
}

.view-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
}

.view-toggle-btn.active {
    background: var(--text-white);
    color: var(--primary-color);
}

.view-toggle-mobile {
    width: 100%;
    margin-bottom: 16px;
}

.view-toggle-mobile .view-toggle-btn {
    flex: 1;
    text-align: center;
}

/* =========================================
   User Cards Grid
   ========================================= */

.user-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.user-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.user-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.user-card-body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.user-avatar-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
    margin: 0 auto;
}

.user-card-info {
    text-align: center;
}

.user-card-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.user-card-stats {
    display: flex;
    justify-content: center;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.user-card-stats .stat-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.user-card-stats .stat-item strong {
    color: var(--text-primary);
}

.user-progress-bar {
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.user-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color) 0%, #20c997 100%);
    transition: width 0.5s ease;
    border-radius: 4px;
}

/* =========================================
   User Tasks Modal
   ========================================= */

.user-tasks-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.task-group {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.task-group-header {
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-secondary);
}

.task-group-header:hover {
    background: var(--bg-primary);
}

.task-group-toggle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: transform 0.2s ease;
}

.task-group.expanded .task-group-toggle {
    transform: rotate(90deg);
}

.task-group-title {
    flex: 1;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.task-subtask-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--bg-primary);
    padding: 4px 10px;
    border-radius: 12px;
}

.task-group-subtasks {
    display: none;
    padding: 8px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.task-group.expanded .task-group-subtasks {
    display: block;
}

.subtask-row {
    display: flex;
    align-items: center;
    padding: 12px 14px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    gap: 12px;
    background: var(--bg-primary);
    margin-bottom: 6px;
}

.subtask-row:last-child {
    margin-bottom: 0;
}

.subtask-row:hover {
    background: var(--border-color);
}

.subtask-row-name {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.subtask-row-dates {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.subtask-row-dates .date-label {
    color: var(--text-light);
}

.subtask-row-dates .date-separator {
    color: var(--border-color);
}

.subtask-row-status {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 12px;
    text-transform: uppercase;
    flex-shrink: 0;
}

.subtask-row-status.status-completed {
    background: #d4edda;
    color: #155724;
}

.subtask-row-status.status-in-progress {
    background: #fff3cd;
    color: #856404;
}

.subtask-row-status.status-pending {
    background: #e2e3e5;
    color: #383d41;
}

/* =========================================
   User Detail Page (user.php)
   ========================================= */

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    transition: var(--transition);
}

.back-link:hover {
    color: var(--primary-light);
}

.user-stats-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.user-stats-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.user-stats-info {
    flex: 1;
    min-width: 200px;
}

.user-stats-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.user-stats-details {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.user-stats-details span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.user-stats-progress {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    min-width: 120px;
}

.user-stats-percentage {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.user-stats-progress-bar {
    width: 120px;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.user-stats-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color) 0%, #20c997 100%);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.user-tasks-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.user-task-group {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.user-task-header {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-secondary);
}

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

.user-task-toggle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: transform 0.2s ease;
}

.user-task-group.expanded .user-task-toggle {
    transform: rotate(90deg);
}

.user-task-title {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.user-task-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--bg-primary);
    padding: 4px 12px;
    border-radius: 12px;
}

.user-task-subtasks {
    display: none;
    padding: 8px 16px 16px;
    border-top: 1px solid var(--border-color);
}

.user-task-group.expanded .user-task-subtasks {
    display: block;
}

.user-subtask-row {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    gap: 12px;
    background: var(--bg-primary);
    margin-bottom: 8px;
}

.user-subtask-row:last-child {
    margin-bottom: 0;
}

.user-subtask-row:hover {
    background: var(--border-color);
}

.user-subtask-info {
    flex: 1;
}

.user-subtask-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.user-subtask-dates {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.user-subtask-dates .date-label {
    color: var(--text-light);
}

.user-subtask-dates .date-separator {
    color: var(--border-color);
}

.user-subtask-status {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 12px;
    text-transform: uppercase;
    flex-shrink: 0;
}

.user-subtask-status.status-completed {
    background: #d4edda;
    color: #155724;
}

.user-subtask-status.status-in-progress {
    background: #fff3cd;
    color: #856404;
}

.user-subtask-status.status-pending {
    background: #e2e3e5;
    color: #383d41;
}

/* =========================================
   Responsive Design
   ========================================= */

/* Tablets */
@media (max-width: 992px) {
    .task-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }

    .user-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

/* Mobile */
@media (max-width: 768px) {
    .page-title {
        display: none;
    }

    .main-nav {
        display: none;
    }

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

    .task-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .user-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    /* User Detail Page Mobile */
    .user-stats-card {
        padding: 16px;
        gap: 16px;
    }

    .user-stats-avatar {
        width: 56px;
        height: 56px;
        font-size: 1.25rem;
    }

    .user-stats-name {
        font-size: 1.25rem;
    }

    .user-stats-details {
        gap: 12px;
        font-size: 0.85rem;
    }

    .user-stats-percentage {
        font-size: 1.5rem;
    }

    .user-task-header {
        padding: 14px 16px;
    }

    .user-task-title {
        font-size: 1rem;
    }

    .user-subtask-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .user-subtask-status {
        align-self: flex-start;
    }

    .user-card-body {
        padding: 12px;
        gap: 8px;
    }

    .user-avatar-circle {
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }

    .user-card-name {
        font-size: 0.95rem;
    }

    .user-card-stats {
        flex-direction: column;
        gap: 4px;
        font-size: 0.8rem;
    }

    .subtask-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .subtask-row-dates {
        flex-wrap: wrap;
    }

    .subtask-row-status {
        align-self: flex-start;
    }

    .task-card-image {
        height: 100px;
    }

    .task-card-body {
        padding: 12px;
    }

    .task-card-title {
        font-size: 0.95rem;
    }

    .task-card-meta {
        font-size: 0.75rem;
    }

    .progress-bar {
        height: 24px;
    }

    .fab {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .page-header .btn:not(.fab) {
        display: none;
    }

    .auth-card {
        padding: 30px 24px;
    }

    .modal {
        max-height: 95vh;
        margin: 10px;
    }

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

    .back-link-container {
       width: 100%;
    }
      
    .search-filter-bar {
        flex-direction: column;
    }

    .search-box {
        width: 100%;
    }

    .filter-dropdown {
        width: 100%;
    }

    .filter-dropdown select {
        width: 100%;
    }

    .subtask-header {
        flex-direction: column;
        gap: 8px;
    }

    .subtask-actions {
        width: 100%;
        justify-content: flex-end;
    }

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

    .users-table table {
        min-width: 600px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .main-content {
        padding: 12px;
    }

    .task-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .task-card-image {
        height: 80px;
    }

    .task-card-body {
        padding: 10px;
    }

    .progress-bar-text {
        font-size: 0.75rem;
    }

    .user-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .user-card-body {
        padding: 10px;
        gap: 6px;
    }

    .user-avatar-circle {
        width: 36px;
        height: 36px;
        font-size: 0.85rem;
    }

    .user-card-name {
        font-size: 0.85rem;
    }

    .user-card-stats {
        font-size: 0.75rem;
    }

    .view-toggle-btn {
        padding: 6px 10px;
        font-size: 0.8rem;
    }

    .task-group-header {
        padding: 10px 12px;
    }

    .task-group-title {
        font-size: 0.9rem;
    }

    .subtask-row {
        padding: 10px 12px;
    }

    .subtask-row-name {
        font-size: 0.85rem;
    }
}

/* =========================================
   Recurring Sub-task Styles
   ========================================= */

/* Back link container for mobile recurring button */
.back-link-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.back-link {
    font-size: 0.9rem;
    display: inline-block;
}

/* Desktop recurring button */
.btn-recurring-desktop {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* Mobile recurring button - hidden on desktop */
.btn-recurring-mobile {
    display: none;
    width: 36px;
    height: 36px;
    padding: 0;
    font-size: 1rem;
    border-radius: 50%;
    background: var(--secondary-color);
    color: white;
    border: none;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-recurring-mobile:hover {
    background: var(--primary-light);
    transform: scale(1.1);
}

/* Recurring badge on subtask cards */
.badge-recurring {
    background: linear-gradient(135deg, #9c27b0, #673ab7);
    color: white;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 12px;
    margin-left: 8px;
    white-space: nowrap;
}

/* Recurrence section in modal */
.recurrence-section {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 16px;
    margin-top: 16px;
    border: 1px solid var(--border-color);
}

.recurrence-section-title {
    color: var(--primary-color);
    margin-bottom: 16px;
    font-size: 1rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 8px;
}

/* Recurrence type options */
.recurrence-type-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.recurrence-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.recurrence-option:hover {
    border-color: var(--secondary-color);
    background: rgba(74, 144, 217, 0.05);
}

.recurrence-option input[type="radio"] {
    accent-color: var(--primary-color);
}

.recurrence-option input[type="radio"]:checked + span {
    color: var(--primary-color);
    font-weight: 600;
}

.recurrence-option:has(input:checked) {
    border-color: var(--primary-color);
    background: rgba(30, 60, 114, 0.1);
}

/* Days checkbox group */
.days-checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.day-checkbox {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 40px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.85rem;
}

.day-checkbox:hover {
    border-color: var(--secondary-color);
}

.day-checkbox input[type="checkbox"] {
    display: none;
}

.day-checkbox:has(input:checked) {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.day-checkbox:has(input:checked) span {
    font-weight: 600;
}

/* Mobile responsive for recurring */
@media (max-width: 768px) {
    /* Show mobile button, hide desktop button */
    .btn-recurring-mobile {
        display: flex!important;
    }

    .btn-recurring-desktop {
        display: none !important;
    }

    .recurrence-type-options {
        grid-template-columns: repeat(2, 1fr);
    }

    .days-checkbox-group {
        justify-content: center;
    }

    .day-checkbox {
        width: 44px;
        height: 36px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .recurrence-type-options {
        grid-template-columns: 1fr 1fr;
        gap: 6px;
    }

    .recurrence-option {
        padding: 8px 10px;
        font-size: 0.85rem;
    }

    .day-checkbox {
        width: 40px;
        height: 34px;
    }

    .recurrence-section {
        padding: 12px;
    }

    .badge-recurring {
        font-size: 0.65rem;
        padding: 2px 6px;
    }
}