:root {
    --primary-color: #0056B3;
    --primary-light: #0066CC;
    --secondary-color: #00B4A0;
    --text-dark: #2C3E50;
    --text-light: #6B7C93;
    --bg-light: #F8F9FA;
    --white: #FFFFFF;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 12px 40px rgba(0, 86, 179, 0.15);
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Cases Page Header */
.cases-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    padding: 80px 0 60px;
    text-align: center;
    color: var(--white);
}

.cases-header h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    font-weight: 800;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.cases-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Cases Container */
.cases-page {
    min-height: 100vh;
    background-color: var(--bg-light);
}

.cases-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px 20px;
}

/* Filter Section */
.filter-section {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: var(--shadow);
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    align-items: flex-start;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 200px;
}

.filter-group label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.filter-group select {
    padding: 12px 16px;
    border: 2px solid #E8EEF5;
    border-radius: var(--border-radius);
    font-size: 1rem;
    color: var(--text-dark);
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7C93' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.filter-group select:hover {
    border-color: var(--primary-color);
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.filter-tag {
    padding: 10px 20px;
    background: var(--bg-light);
    border: 2px solid transparent;
    border-radius: 30px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-light);
    transition: var(--transition);
}

.filter-tag:hover {
    background: rgba(0, 86, 179, 0.05);
    color: var(--primary-color);
}

.filter-tag.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.filter-actions {
    display: flex;
    gap: 15px;
    align-items: flex-end;
}

.btn-filter, .btn-reset {
    padding: 12px 30px;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-filter:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 86, 179, 0.3);
}

.btn-reset {
    background: transparent;
    color: var(--text-light);
    border: 2px solid #E8EEF5;
}

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

/* Cases Summary */
.cases-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.cases-count {
    font-size: 1rem;
    color: var(--text-light);
}

.cases-count strong {
    color: var(--primary-color);
    font-size: 1.3rem;
}

/* Cases Grid */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.case-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.case-image-container {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, #E8EEF5 0%, #F8F9FA 100%);
}

.case-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.case-image-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #E8EEF5 0%, #F8F9FA 100%);
    opacity: 1;
    transition: opacity 0.3s ease;
}

.case-image-placeholder i {
    font-size: 3rem;
    color: #CBD5E0;
}

.case-image.loaded + .case-image-placeholder {
    opacity: 0;
    pointer-events: none;
}

.case-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: var(--white);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.case-content {
    padding: 25px;
}

.case-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.case-meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.case-meta-item i {
    color: var(--secondary-color);
    width: 16px;
    text-align: center;
}

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 86, 179, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    padding: 20px;
}

.case-card:hover .case-overlay {
    opacity: 1;
    visibility: visible;
}

.case-overlay-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    transition: var(--transition);
}

.case-card:hover .case-overlay-icon {
    transform: scale(1.1);
}

.case-overlay-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.case-overlay-text {
    color: var(--white);
    font-size: 0.95rem;
    font-weight: 600;
}

/* Empty State */
.cases-empty {
    text-align: center;
    padding: 80px 20px;
}

.cases-empty i {
    font-size: 4rem;
    color: #CBD5E0;
    margin-bottom: 20px;
}

.cases-empty h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.cases-empty p {
    color: var(--text-light);
}

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.3s ease;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

.modal-header {
    position: relative;
    height: 350px;
    overflow: hidden;
}

.modal-header img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 50%;
    border: none;
    color: var(--white);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

.modal-body {
    padding: 40px;
}

.modal-category {
    display: inline-block;
    background: rgba(0, 86, 179, 0.1);
    color: var(--primary-color);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.modal-title {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.modal-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 30px;
    padding: 25px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
}

.modal-meta-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-meta-item i {
    width: 45px;
    height: 45px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
}

.modal-meta-item-content {
    display: flex;
    flex-direction: column;
}

.modal-meta-item-label {
    font-size: 0.85rem;
    color: var(--text-light);
}

.modal-meta-item-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
}

.modal-description {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1.05rem;
}

.modal-gallery {
    margin-top: 35px;
}

.modal-gallery h4 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.modal-gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.modal-gallery-item {
    aspect-ratio: 4/3;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.modal-gallery-item:hover {
    transform: scale(1.03);
}

.modal-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(30px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 1199px) {
    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .cases-header h1 {
        font-size: 2.5rem;
    }

    .filter-row {
        gap: 20px;
    }

    .filter-group {
        min-width: 180px;
    }

    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .modal-meta {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .modal-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .cases-header {
        padding: 60px 0 40px;
    }

    .cases-header h1 {
        font-size: 2rem;
    }

    .cases-header p {
        font-size: 1rem;
    }

    .cases-container {
        padding: 40px 15px;
    }

    .filter-section {
        padding: 20px;
    }

    .filter-row {
        flex-direction: column;
        gap: 20px;
    }

    .filter-group {
        min-width: 100%;
    }

    .filter-actions {
        width: 100%;
    }

    .btn-filter, .btn-reset {
        flex: 1;
        padding: 14px 20px;
    }

    .cases-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .case-card:hover {
        transform: translateY(-5px);
    }

    .case-image-container {
        height: 180px;
    }

    .modal-header {
        height: 220px;
    }

    .modal-body {
        padding: 25px;
    }

    .modal-title {
        font-size: 1.4rem;
    }

    .modal-gallery-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .case-content {
        padding: 20px;
    }

    .case-title {
        font-size: 1.1rem;
    }
}