/**
 * TechHub Tamil - Components
 * Reusable UI Components
 */

/* ========================================
   1. Buttons
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-md);
    font-weight: 600;
    line-height: 1;
    border-radius: var(--border-radius-full);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    white-space: nowrap;
}

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

/* Button Sizes */
.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 1.125rem 2.25rem;
    font-size: var(--font-size-lg);
}

/* Button Variants */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-success {
    background: var(--gradient-green);
    color: var(--text-primary);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(16, 185, 129, 0.4);
}

.btn-warning {
    background: var(--gradient-orange);
    color: var(--text-primary);
}

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

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

.btn-ghost:hover {
    background: rgba(99, 102, 241, 0.1);
}

/* Button with Icon */
.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--border-radius-md);
}

.btn-icon-sm {
    width: 36px;
    height: 36px;
}

.btn-icon-lg {
    width: 52px;
    height: 52px;
}

/* ========================================
   2. Cards
======================================== */
.card {
    background: var(--dark-light);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.card-text {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* Card Hover Effects */
.card-hover-lift:hover {
    transform: translateY(-10px);
}

.card-hover-glow:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.15);
}

.card-hover-border:hover {
    border-color: var(--primary);
}

/* ========================================
   3. Badges & Tags
======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.375rem 0.875rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--border-radius-full);
}

.badge-primary {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

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

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

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

.badge-info {
    background: rgba(6, 182, 212, 0.1);
    color: var(--accent-cyan);
}

/* Tags */
.tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-full);
    color: var(--text-muted);
    transition: all var(--transition-normal);
}

.tag:hover {
    background: var(--primary);
    color: var(--text-primary);
}

/* ========================================
   4. Form Elements
======================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.form-label .required {
    color: var(--danger);
}

.form-input {
    width: 100%;
    padding: 1rem;
    background: var(--dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-md);
    transition: all var(--transition-normal);
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-input::placeholder {
    color: var(--text-dark);
}

.form-input-sm {
    padding: 0.625rem 0.875rem;
    font-size: var(--font-size-sm);
}

.form-input-lg {
    padding: 1.125rem 1.25rem;
    font-size: var(--font-size-lg);
}

/* Input with Icon */
.input-icon-wrapper {
    position: relative;
}

.input-icon-wrapper .input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dark);
}

.input-icon-wrapper .form-input {
    padding-left: 3rem;
}

/* Select */
.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-check-input {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
    cursor: pointer;
}

/* Textarea */
.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* Form Error */
.form-error {
    color: var(--danger);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.form-input.error {
    border-color: var(--danger);
}

/* ========================================
   5. Navbar
======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: var(--z-fixed);
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    padding: 0.75rem 5%;
    background: rgba(15, 23, 42, 0.98);
    box-shadow: var(--shadow-lg);
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.navbar-logo i {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.navbar-menu {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
}

.navbar-link {
    color: var(--text-muted);
    font-weight: 500;
    transition: color var(--transition-normal);
    position: relative;
}

.navbar-link:hover,
.navbar-link.active {
    color: var(--text-primary);
}

.navbar-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Mobile Menu Toggle */
.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.navbar-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all var(--transition-normal);
}

/* ========================================
   6. Language Switcher
======================================== */
.lang-switcher {
    display: flex;
    gap: 0.25rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem;
    border-radius: var(--border-radius-full);
    border: 1px solid var(--border-color);
}

.lang-btn {
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-full);
    background: transparent;
    color: var(--text-muted);
    font-weight: 600;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.lang-btn:hover {
    color: var(--text-primary);
}

.lang-btn.active {
    background: var(--gradient-primary);
    color: var(--text-primary);
}

/* ========================================
   7. Section Headers
======================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--border-radius-full);
    color: var(--primary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    color: var(--text-muted);
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   8. Info Boxes / Alerts
======================================== */
.alert {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-lg);
}

.alert-icon {
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.alert-content h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.alert-content p {
    font-size: var(--font-size-sm);
    margin: 0;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.alert-success .alert-icon { color: var(--success); }

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.alert-warning .alert-icon { color: var(--warning); }

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.alert-danger .alert-icon { color: var(--danger); }

.alert-info {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.alert-info .alert-icon { color: var(--primary); }

/* ========================================
   9. Modal
======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.modal {
    background: var(--dark-light);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    max-width: 500px;
    width: 90%;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

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

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

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.modal-close {
    width: 36px;
    height: 36px;
    background: var(--dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

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

.modal-body {
    margin-bottom: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* ========================================
   10. Toast / Notifications
======================================== */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: var(--z-tooltip);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 1rem 1.5rem;
    background: var(--dark-light);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    transform: translateX(120%);
    transition: transform var(--transition-normal);
}

.toast.show {
    transform: translateX(0);
}

.toast-success {
    border-color: rgba(34, 197, 94, 0.3);
}

.toast-success i { color: var(--success); }

.toast-error {
    border-color: rgba(239, 68, 68, 0.3);
}

.toast-error i { color: var(--danger); }

.toast-warning {
    border-color: rgba(245, 158, 11, 0.3);
}

.toast-warning i { color: var(--warning); }

/* ========================================
   11. Loading Spinner
======================================== */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 4px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
}

/* ========================================
   12. Tooltips
======================================== */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1rem;
    background: var(--dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    margin-bottom: 0.5rem;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   13. Dropdown
======================================== */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background: var(--dark-light);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: var(--z-dropdown);
}

.dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    color: var(--text-muted);
    transition: all var(--transition-normal);
}

.dropdown-item:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--text-primary);
}

/* ========================================
   14. Pagination
======================================== */
.pagination {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.page-btn {
    width: 40px;
    height: 40px;
    background: var(--dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.page-btn:hover {
    border-color: var(--primary);
    color: var(--text-primary);
}

.page-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--text-primary);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========================================
   15. Progress Bar
======================================== */
.progress {
    height: 8px;
    background: var(--dark);
    border-radius: var(--border-radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-full);
    transition: width var(--transition-slow);
}

.progress-sm { height: 4px; }
.progress-lg { height: 12px; }

/* ========================================
   16. Avatar
======================================== */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--text-primary);
    flex-shrink: 0;
}

.avatar-sm { width: 32px; height: 32px; font-size: var(--font-size-sm); }
.avatar-lg { width: 56px; height: 56px; font-size: var(--font-size-xl); }
.avatar-xl { width: 80px; height: 80px; font-size: var(--font-size-2xl); }

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

/* ========================================
   17. WhatsApp Float Button
======================================== */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(37, 211, 102, 0.5);
}

/* ========================================
   18. Back to Top Button
======================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 6rem;
    width: 50px;
    height: 50px;
    background: var(--dark-light);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary);
    border-color: var(--primary);
}

/* ========================================
   19. Breadcrumb
======================================== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.breadcrumb a {
    color: var(--text-muted);
    transition: color var(--transition-normal);
}

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

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

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

/* ========================================
   20. Table
======================================== */
.table-wrapper {
    background: var(--dark-light);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
}

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

.table th,
.table td {
    padding: 1rem 1.5rem;
    text-align: left;
}

.table th {
    background: var(--dark);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.table tr {
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-normal);
}

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

.table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* ========================================
   21. Tabs
======================================== */
.tabs {
    display: flex;
    gap: var(--spacing-sm);
    background: var(--dark-light);
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border-radius: var(--border-radius-md);
    color: var(--text-muted);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.tab-btn.active {
    background: var(--gradient-primary);
    color: var(--text-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}