/**
 * Components CSS - Buttons, Cards, Forms
 * D-14: Split CSS files for organization
 */

/* ========== Language Switcher ========== */
.lang-switch {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.lang-item {
    font-size: 0.875rem;
    font-weight: 500;
}

.lang-active {
    color: var(--primary-blue);
}

.lang-form {
    display: inline;
}

.lang-link {
    color: var(--text-gray);
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.lang-link:hover {
    color: var(--primary-blue);
}

.lang-separator {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 2px solid transparent;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--accent-orange);
    color: #fff;
}

.btn-primary:hover {
    background-color: #d97706;
    color: #fff;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: #fff;
    border-color: #fff;
}

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

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

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

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8125rem;
}

/* ========== Cards ========== */
.card {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

.card-image {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 aspect ratio */
    overflow: hidden;
}

.card-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.card:hover .card-image img {
    transform: scale(1.05);
}

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

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.card-title a {
    color: inherit;
}

.card-title a:hover {
    color: var(--primary-blue);
}

.card-text {
    font-size: 0.875rem;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.card-meta {
    font-size: 0.8125rem;
    color: var(--text-light);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--primary-blue);
    font-weight: 500;
}

.card-link:hover {
    color: var(--secondary-blue);
}

.card-link::after {
    content: '→';
    transition: transform var(--transition-fast);
}

.card:hover .card-link::after {
    transform: translateX(4px);
}

/* ========== Product Card ========== */
.product-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

.product-card-image {
    position: relative;
    width: 100%;
    padding-top: 75%; /* 4:3 aspect ratio */
    overflow: hidden;
    background-color: var(--bg-light);
}

.product-card-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.product-card:hover .product-card-image img {
    transform: scale(1.05);
}

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

.product-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.product-card-title a {
    color: inherit;
}

.product-card-title a:hover {
    color: var(--primary-blue);
}

.product-card-desc {
    font-size: 0.875rem;
    color: var(--text-gray);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8125rem;
    color: var(--primary-blue);
    font-weight: 500;
}

.product-card-link:hover {
    color: var(--secondary-blue);
}

/* ========== News Card ========== */
.news-card {
    display: flex;
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
}

.news-card:hover {
    box-shadow: var(--shadow-md);
}

.news-card-image {
    flex-shrink: 0;
    width: 120px;
    height: 90px;
    overflow: hidden;
}

.news-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-card-body {
    padding: var(--spacing-sm) var(--spacing-md);
    flex: 1;
}

.news-card-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.news-card-title a {
    color: inherit;
}

.news-card-title a:hover {
    color: var(--primary-blue);
}

.news-card-date {
    font-size: 0.75rem;
    color: var(--text-light);
}

/* ========== Case Card ========== */
.case-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md);
    transition: box-shadow var(--transition-normal);
}

.case-card:hover {
    box-shadow: var(--shadow-md);
}

.case-card-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.case-card-title a {
    color: inherit;
}

.case-card-title a:hover {
    color: var(--primary-blue);
}

.case-card-desc {
    font-size: 0.8125rem;
    color: var(--text-gray);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-card-link {
    font-size: 0.75rem;
    color: var(--primary-blue);
    font-weight: 500;
}

/* ========== Hero Section ========== */
.hero {
    position: relative;
    width: 100%;
    height: 500px;
    background-color: var(--dark-blue);
    overflow: hidden;
}

.hero-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(30, 58, 95, 0.9) 0%, rgba(30, 58, 95, 0.4) 50%, transparent 100%);
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    z-index: 10;
    width: 90%;
    max-width: 800px;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Carousel Navigation */
.carousel-nav {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 20;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.carousel-dot.active {
    background-color: #fff;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background-color: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 1.25rem;
    cursor: pointer;
    z-index: 20;
    transition: background-color var(--transition-fast);
}

.carousel-arrow:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

.carousel-prev {
    left: 20px;
}

.carousel-next {
    right: 20px;
}

/* ========== Forms ========== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9375rem;
    color: var(--text-dark);
    background-color: var(--bg-white);
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
    outline: none;
}

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

/* ========================================
   Form Validation Errors (Phase 5)
   ======================================== */

.form-error {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

.form-group.has-error .form-input,
.form-group.has-error .form-textarea {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-group.has-error label {
    color: #ef4444;
}

/* ========================================
   Certification Cards (Phase 5)
   ======================================== */

.certification-card {
    background: white;
    border-radius: 0.75rem;
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.certification-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.certification-card img {
    height: 80px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    margin-bottom: 1rem;
}

.certification-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

/* Trust badge (homepage About section) */
.trust-badge {
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.2s ease;
}

.trust-badge:hover {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.trust-badge img {
    height: 32px;
    width: auto;
    object-fit: contain;
}

.trust-badge span {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-dark);
}

/* Certifications grid */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

@media (max-width: 991px) {
    .certifications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 575px) {
    .certifications-grid {
        grid-template-columns: 1fr;
    }
}

/* Trust badges container (homepage) */
.trust-badges-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
    justify-content: flex-start;
}

@media (max-width: 575px) {
    .trust-badges-container {
        justify-content: center;
    }
}

/* ========== Empty State ========== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-gray);
}

/* ========== Responsive ========== */
@media (max-width: 767px) {
    .hero {
        height: 400px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .news-card {
        flex-direction: column;
    }

    .news-card-image {
        width: 100%;
        height: 160px;
    }
}