/* AlphaLink Solution - Main Stylesheet */
/* Brand Colors:
   Primary: #00aeef
   Secondary: #f47521
   Dark gray: #4d4a4c
   Light gray: #929693
*/

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #00aeef;
    --secondary: #f47521;
    --dark-gray: #4d4a4c;
    --light-gray: #929693;
    --white: #ffffff;
    --light-bg: #f5f5f5;
    --primary-hover: #0099cc;
    --secondary-hover: #e0661a;
    --primary-light: rgba(0, 174, 239, 0.1);
    --secondary-light: rgba(244, 117, 33, 0.15);
    --secondary-bg: rgba(244, 117, 33, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--dark-gray);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.navbar-brand {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.navbar-logo {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.navbar-logo:hover {
    transform: scale(1.05);
}

.brand-text {
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand-text {
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.navbar-menu {
    display: flex;
    gap: 24px;
}

.nav-link {
    color: var(--dark-gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
    padding-bottom: 4px;
}

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

.nav-link.active {
    color: var(--secondary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dark-gray);
    transition: all 0.3s;
}

.mobile-menu {
    display: none;
    flex-direction: column;
    background: var(--white);
    border-top: 1px solid #eee;
    padding: 16px 20px;
}

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

.mobile-nav-link {
    color: var(--dark-gray);
    text-decoration: none;
    padding: 12px 0;
    border-bottom: 1px solid #eee;
    transition: color 0.3s;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--secondary);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
}

.hero-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 32px;
    opacity: 0.95;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 12px 32px;
    background: var(--white);
    color: var(--primary);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    font-size: 16px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    background: #f0f0f0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

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

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary) 0%, #0099cc 100%);
    box-shadow: 0 4px 16px rgba(0, 174, 239, 0.4);
}

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

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--secondary) 0%, #e0661a 100%);
    box-shadow: 0 4px 16px rgba(244, 117, 33, 0.4);
}

/* Sections */
.section {
    padding: 80px 20px;
}

.section-title {
    font-size: 36px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 16px;
    color: var(--dark-gray);
    position: relative;
    padding-bottom: 16px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 20px;
    text-align: center;
    color: var(--light-gray);
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-gray {
    background: var(--light-bg);
}

/* Cách ly phần đối tác để không ảnh hưởng đến phần khác */
section:has(.partners-grid) {
    contain: layout;
    isolation: isolate;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.card {
    background: var(--white);
    padding: 32px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-light) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    border-color: var(--secondary);
    z-index: 5;
}

.card:hover::before {
    opacity: 0.05;
}

.card-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-light) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 24px;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), background 0.4s ease;
    position: relative;
    z-index: 1;
}

.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark-gray);
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

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

.card-description {
    color: var(--light-gray);
    line-height: 1.6;
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.card:hover .card-description {
    color: var(--dark-gray);
}

/* Service Card - Fixed height with button at bottom */
.service-card {
    display: flex;
    flex-direction: column;
    min-height: 280px;
}

.service-card .card-description {
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    min-height: 4.8em; /* 3 lines * 1.6 line-height */
}

.service-card-footer {
    margin-top: auto;
    padding-top: 16px;
}

.service-btn {
    font-size: 14px;
    padding: 8px 20px;
    width: 100%;
}

/* Footer */
.footer {
    background: var(--white);
    border-top: 1px solid #eee;
    padding: 48px 20px 24px;
    margin-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.footer-col-wide {
    grid-column: span 2;
}

.footer-title {
    font-size: 24px;
    font-weight: bold;
    color: var(--dark-gray);
    margin-bottom: 16px;
}

.footer-title.footer-brand-text {
    color: transparent;
}

.footer-description {
    color: var(--light-gray);
    margin-bottom: 24px;
    line-height: 1.6;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--light-gray);
}

.footer-icon {
    color: var(--secondary);
}

.footer-heading {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--light-gray);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--secondary);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #eee;
    color: var(--light-gray);
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-gray);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary);
}

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

.alert {
    padding: 16px;
    border-radius: 6px;
    margin-bottom: 24px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Blog */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.blog-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
}

.blog-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-light) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.blog-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    border-color: var(--secondary);
    z-index: 5;
}

.blog-card:hover::before {
    opacity: 0.05;
}

.blog-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
}

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

.blog-card-content {
    padding: 24px;
    position: relative;
    z-index: 1;
}

.blog-card-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark-gray);
}

.blog-card-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
}

.blog-card-title a:hover {
    color: var(--secondary);
}

.blog-card-excerpt {
    color: var(--light-gray);
    margin-bottom: 16px;
    line-height: 1.6;
}

.blog-card-date {
    color: var(--light-gray);
    font-size: 14px;
}

/* Blog Detail */
.blog-detail {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px 20px;
}

.blog-detail-header {
    margin-bottom: 32px;
}

.blog-detail-title {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 16px;
    color: var(--dark-gray);
}

.blog-detail-meta {
    color: var(--light-gray);
    font-size: 14px;
}

.blog-detail-content {
    line-height: 1.8;
    color: var(--dark-gray);
}

.blog-detail-content img {
    max-width: 100%;
    height: auto;
    margin: 24px 0;
    border-radius: 8px;
}

.blog-detail-content p {
    margin-bottom: 16px;
}

.blog-detail-content h1,
.blog-detail-content h2,
.blog-detail-content h3,
.blog-detail-content h4,
.blog-detail-content h5,
.blog-detail-content h6 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: bold;
    color: var(--dark-gray);
}

.blog-detail-content ul,
.blog-detail-content ol {
    margin: 16px 0;
    padding-left: 24px;
}

.blog-detail-content li {
    margin-bottom: 8px;
}

.blog-detail-content a {
    color: var(--secondary);
    text-decoration: none;
}

.blog-detail-content a:hover {
    color: var(--primary);
    text-decoration: underline;
}

.blog-detail-content blockquote {
    border-left: 4px solid var(--secondary);
    padding-left: 16px;
    margin: 16px 0;
    color: var(--light-gray);
    font-style: italic;
}

/* About content styling */
.about-content {
    line-height: 1.8;
    color: var(--dark-gray);
}

.about-content p {
    margin-bottom: 16px;
}

.about-content h1,
.about-content h2,
.about-content h3,
.about-content h4,
.about-content h5,
.about-content h6 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: bold;
    color: var(--dark-gray);
}

.about-content ul,
.about-content ol {
    margin: 16px 0;
    padding-left: 24px;
}

.about-content li {
    margin-bottom: 8px;
}

.about-content img {
    max-width: 100%;
    height: auto;
    margin: 24px 0;
    border-radius: 8px;
}

.about-content a {
    color: var(--secondary);
    text-decoration: none;
}

.about-content a:hover {
    color: var(--primary);
    text-decoration: underline;
}

/* Case study content styling */
.case-study-content {
    line-height: 1.8;
}

.case-study-content p {
    margin-bottom: 12px;
}

.case-study-content h1,
.case-study-content h2,
.case-study-content h3,
.case-study-content h4,
.case-study-content h5,
.case-study-content h6 {
    margin-top: 16px;
    margin-bottom: 12px;
    font-weight: bold;
}

.case-study-content ul,
.case-study-content ol {
    margin: 12px 0;
    padding-left: 20px;
}

.case-study-content li {
    margin-bottom: 6px;
}

.case-study-content img {
    max-width: 100%;
    height: auto;
    margin: 16px 0;
    border-radius: 6px;
}

.case-study-content a {
    color: var(--secondary);
    text-decoration: none;
}

.case-study-content a:hover {
    color: var(--primary);
    text-decoration: underline;
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.pricing-card {
    background: var(--white);
    padding: 40px 32px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-light) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.pricing-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    border-color: var(--secondary);
    z-index: 5;
}

.pricing-card:hover::before {
    opacity: 0.05;
}

.pricing-card.popular {
    border: 2px solid var(--secondary);
}

.pricing-card.popular::before {
    content: 'Phổ biến';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    padding: 4px 16px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-name {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 8px;
    color: var(--dark-gray);
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.pricing-card:hover .pricing-name {
    color: var(--secondary);
}

.pricing-price {
    font-size: 32px;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.pricing-description {
    color: var(--light-gray);
    margin-bottom: 24px;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 32px;
    flex: 1;
}

.pricing-features li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--dark-gray);
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

.pricing-card .btn {
    margin-top: auto;
    flex-shrink: 0;
}

/* Careers */
.job-card {
    background: var(--white);
    padding: 32px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.job-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-light) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.job-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    border-color: var(--secondary);
    z-index: 5;
}

.job-card:hover::before {
    opacity: 0.05;
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
    position: relative;
    z-index: 1;
}

.job-title {
    font-size: 24px;
    font-weight: bold;
    color: var(--dark-gray);
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.job-card:hover .job-title {
    color: var(--secondary);
}

.job-meta {
    display: flex;
    gap: 16px;
    color: var(--light-gray);
    font-size: 14px;
    flex-wrap: wrap;
}

.job-section {
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

.job-section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 12px;
}

.job-section ul {
    list-style: none;
    padding-left: 0;
}

.job-section li {
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
    color: var(--dark-gray);
}

.job-section li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

/* Partners Section */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
    contain: layout style;
    isolation: isolate;
}

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

.partner-card {
    background: var(--white);
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
    transition: box-shadow 0.4s ease, border-color 0.4s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out backwards;
    z-index: 1;
    contain: layout style;
    will-change: auto;
    height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.partner-card:nth-child(1) { animation-delay: 0.1s; }
.partner-card:nth-child(2) { animation-delay: 0.2s; }
.partner-card:nth-child(3) { animation-delay: 0.3s; }
.partner-card:nth-child(4) { animation-delay: 0.4s; }
.partner-card:nth-child(5) { animation-delay: 0.5s; }
.partner-card:nth-child(6) { animation-delay: 0.6s; }

.partner-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-light) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.partner-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    border-color: var(--secondary);
    z-index: 10;
    /* Đảm bảo không làm thay đổi layout */
    position: relative;
}

.partner-card:hover::before {
    opacity: 0.05;
}

.partner-logo-wrapper {
    margin-bottom: 16px;
    min-height: 80px;
    max-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    overflow: hidden;
    contain: layout;
    flex-shrink: 0;
}

.partner-logo-link {
    display: inline-block;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
    will-change: transform;
}

.partner-card:hover .partner-logo-link {
    transform: scale(1.15);
}

.partner-logo {
    max-width: 100%;
    max-height: 80px;
    object-fit: contain;
    transition: filter 0.3s ease;
    filter: none;
    /* Đảm bảo không có grayscale filter */
}

.partner-name-only {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark-gray);
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
    contain: layout;
}

.partner-card:hover .partner-name-only {
    transform: scale(1.05);
}

.partner-name-link {
    color: var(--secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.partner-name-link:hover {
    color: var(--primary);
}

.partner-divider {
    height: 1px;
    background: #eee;
    margin: 16px 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
    flex-shrink: 0;
}

.partner-card:hover .partner-divider {
    height: 2px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    margin: 20px 0;
    box-shadow: 0 2px 8px rgba(244, 117, 33, 0.3);
}

.partner-description {
    color: var(--light-gray);
    font-size: 14px;
    line-height: 1.6;
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
    flex: 1;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
    max-height: 96px;
}

.partner-card:hover .partner-description {
    color: var(--dark-gray);
}

.partner-description p {
    margin: 0;
    transition: transform 0.3s ease;
}

.partner-card:hover .partner-description p {
    /* Bỏ transform để không ảnh hưởng layout */
}

/* Modal (General) */
.modal {
    display: none !important;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.show {
    display: flex !important;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

/* Contact Modal */
.contact-modal {
    display: none !important;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.contact-modal.show {
    display: flex !important;
}

.contact-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.contact-modal-content {
    position: relative;
    background: var(--white);
    border-radius: 12px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    z-index: 1;
    animation: modalSlideIn 0.3s ease-out;
}

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

.contact-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid #eee;
    flex-shrink: 0;
}

.contact-modal-header h2 {
    margin: 0;
    font-size: 24px;
    color: var(--dark-gray);
}

.contact-modal-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--light-gray);
    transition: color 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-modal-close:hover {
    color: var(--dark-gray);
}

.contact-modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.contact-form-message {
    margin-bottom: 16px;
}

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

.contact-form .form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-gray);
}

.contact-form .form-label.required::before,
.form-label.required::before {
    content: '*';
    color: #dc3545;
    margin-right: 4px;
    font-weight: bold;
}

.contact-form .form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.contact-form .form-control:focus {
    outline: none;
    border-color: var(--secondary);
}

.contact-form .form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.contact-form .form-actions .btn {
    flex: 1;
}

.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Scroll Animations */
.scroll-fade-in {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    transform: translateY(20px);
}

.scroll-fade-in.animated {
    opacity: 1;
    transform: translateY(0);
}

.scroll-slide-up {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    transform: translateY(40px);
}

.scroll-slide-up.animated {
    opacity: 1;
    transform: translateY(0);
}

.scroll-slide-left {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    transform: translateX(-40px);
}

.scroll-slide-left.animated {
    opacity: 1;
    transform: translateX(0);
}

.scroll-slide-right {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    transform: translateX(40px);
}

.scroll-slide-right.animated {
    opacity: 1;
    transform: translateX(0);
}

/* Responsive */
@media (max-width: 768px) {
    .desktop-menu {
        display: none;
    }

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

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .section-title {
        font-size: 28px;
    }

    .footer-col-wide {
        grid-column: span 1;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partner-card {
        height: auto;
        min-height: 200px;
    }

    .contact-modal-content {
        max-width: 95%;
        padding: 16px;
    }
}