/**
 * Campus Lane Holdings - UI/UX Enhancements
 * Modern UI improvements applied across all pages
 */

/* ============================================
   LOADING STATES & SKELETONS
   ============================================ */

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--border-radius);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
    border-radius: 4px;
}

.skeleton-text.short { width: 60%; }
.skeleton-text.medium { width: 80%; }
.skeleton-text.long { width: 100%; }

.skeleton-card {
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.skeleton-image {
    width: 100%;
    height: 200px;
    border-radius: var(--border-radius);
}

/* ============================================
   SMOOTH TRANSITIONS
   ============================================ */

* {
    transition: background-color 0.3s ease, 
                color 0.3s ease, 
                border-color 0.3s ease,
                transform 0.3s ease,
                opacity 0.3s ease,
                box-shadow 0.3s ease;
}

/* ============================================
   ENHANCED BUTTONS
   ============================================ */

.btn {
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(44, 95, 124, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(44, 95, 124, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(74, 143, 60, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 143, 60, 0.4);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
}

.btn-loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: button-spin 0.6s linear infinite;
}

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

/* ============================================
   ENHANCED CARDS
   ============================================ */

.card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.card:hover::before {
    transform: translateX(0);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

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

.card-body {
    padding: 0;
}

.card-footer {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ============================================
   PROPERTY CARDS ENHANCEMENT
   ============================================ */

.property-card {
    position: relative;
    overflow: hidden;
}

.property-card-image {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
}

.property-card-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.property-card:hover .property-card-image img {
    transform: scale(1.1);
}

.property-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 2;
}

.property-badge.featured {
    background: linear-gradient(135deg, var(--accent-color), #f39c12);
    color: white;
}

.property-badge.new {
    background: linear-gradient(135deg, var(--success), #27ae60);
    color: white;
}

.property-badge.sold {
    background: rgba(231, 76, 60, 0.95);
    color: white;
}

.property-favorite {
    position: absolute;
    top: 1rem;
    left: 1rem;
    width: 40px;
    height: 40px;
    background: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 2;
    transition: all 0.3s ease;
}

.property-favorite:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.property-favorite.active {
    background: var(--error);
    color: white;
}

.property-favorite i {
    font-size: 1.2rem;
}

.property-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: 2rem 1rem 1rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.property-card:hover .property-overlay {
    transform: translateY(0);
}

.property-overlay-content {
    color: white;
}

/* ============================================
   ENHANCED FORMS
   ============================================ */

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-label.required::after {
    content: '*';
    color: var(--error);
    margin-left: 0.25rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg-primary);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 95, 124, 0.1);
}

.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid {
    border-color: var(--error);
}

.form-input.is-valid,
.form-select.is-valid,
.form-textarea.is-valid {
    border-color: var(--success);
}

.form-error {
    display: none;
    color: var(--error);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.form-input.is-invalid ~ .form-error {
    display: block;
}

.form-success {
    display: none;
    color: var(--success);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.form-input.is-valid ~ .form-success {
    display: block;
}

.form-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    pointer-events: none;
}

.input-group {
    position: relative;
}

.input-group-prepend,
.input-group-append {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    padding: 0 1rem;
    color: var(--text-secondary);
}

.input-group-prepend { left: 0; }
.input-group-append { right: 0; }

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

/* ============================================
   ENHANCED MODALS
   ============================================ */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

.modal {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9) translateY(-20px);
    transition: all 0.3s ease;
}

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

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    margin: 0;
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

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

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* ============================================
   ENHANCED TOAST NOTIFICATIONS
   ============================================ */

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    pointer-events: none;
}

.toast {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 300px;
    max-width: 400px;
    pointer-events: all;
    animation: toast-slide-in 0.3s ease;
    position: relative;
    overflow: hidden;
}

.toast::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
}

.toast.success::before { background: var(--success); }
.toast.error::before { background: var(--error); }
.toast.warning::before { background: var(--warning); }
.toast.info::before { background: var(--info); }

.toast-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

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

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

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

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

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

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    font-size: 1.2rem;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

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

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: currentColor;
    opacity: 0.3;
    animation: toast-progress 5s linear;
}

@keyframes toast-slide-in {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes toast-progress {
    from { width: 100%; }
    to { width: 0%; }
}

/* ============================================
   ENHANCED SEARCH BAR
   ============================================ */

.search-bar {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    width: 100%;
    padding: 1rem 3.5rem 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(44, 95, 124, 0.15);
}

.search-button {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-color);
    border: none;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.search-button:hover {
    background: var(--primary-dark);
    transform: translateY(-50%) scale(1.05);
}

.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    margin-top: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
    display: none;
    z-index: 100;
}

.search-suggestions.active {
    display: block;
}

.suggestion-item {
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: background 0.2s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.suggestion-item:hover {
    background: var(--bg-secondary);
}

.suggestion-item:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.suggestion-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ============================================
   ENHANCED PAGINATION
   ============================================ */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 2rem 0;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 600;
}

.page-link:hover {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.page-link.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.page-link.disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* ============================================
   ENHANCED TABS
   ============================================ */

.tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 2rem;
}

.tab {
    padding: 1rem 2rem;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
}

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

.tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    animation: tab-fade-in 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes tab-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   ENHANCED BADGES
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary { background: var(--primary-color); color: white; }
.badge-secondary { background: var(--secondary-color); color: white; }
.badge-success { background: var(--success); color: white; }
.badge-warning { background: var(--warning); color: white; }
.badge-error { background: var(--error); color: white; }
.badge-info { background: var(--info); color: white; }

.badge-outline {
    background: transparent;
    border: 2px solid currentColor;
}

/* ============================================
   ENHANCED TOOLTIPS
   ============================================ */

.tooltip-wrapper {
    position: relative;
    display: inline-block;
}

.tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: var(--bg-dark);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
}

.tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--bg-dark);
}

.tooltip-wrapper:hover .tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ============================================
   ENHANCED PROGRESS BARS
   ============================================ */

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    transition: width 0.3s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: progress-shimmer 2s infinite;
}

@keyframes progress-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ============================================
   FLOATING ACTION BUTTON
   ============================================ */

/* .fab class removed - was conflicting with FontAwesome and buttons */

/* ============================================
   SCROLL INDICATOR
   ============================================ */

.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    z-index: 9999;
    transition: width 0.1s ease;
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
    .toast-container {
        right: 10px;
        left: 10px;
    }
    
    .toast {
        min-width: auto;
        width: 100%;
    }
    
    .modal {
        width: 95%;
        max-height: 95vh;
    }
    
    .fab {
        bottom: 1rem;
        right: 1rem;
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .search-bar {
        max-width: 100%;
    }
}

/* ============================================
   DARK MODE SUPPORT
   ============================================ */

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #3a3a3a;
}

[data-theme="dark"] .card,
[data-theme="dark"] .modal,
[data-theme="dark"] .toast {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
    background: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* ============================================
   ACCESSIBILITY IMPROVEMENTS
   ============================================ */

*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Skip to content link */
.skip-to-content {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 1rem;
    z-index: 10000;
    transition: top 0.3s ease;
}

.skip-to-content:focus {
    top: 0;
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .no-print,
    .fab,
    .toast-container,
    .back-to-top,
    .site-header,
    .site-footer,
    .modal-overlay {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
}