/* ==========================================
   CHE Securities Limited - Main Stylesheet
   ========================================== */

/* ==========================================
   CSS Variables
   ========================================== */
:root {
    --primary-color: #1a4d8f;
    --secondary-color: #2e7dd1;
    --accent-color: #4a9eff;
    --dark-color: #0f2942;
    --light-color: #f8f9fa;
    --text-color: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    
    --font-primary: 'Roboto', 'Noto Sans SC', sans-serif;
    --font-chinese: 'Noto Sans SC', sans-serif;
    
    --transition-speed: 0.3s;
    --box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* ==========================================
   Reset & Base Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 80px; /* Offset for fixed header */
}

body {
    font-family: var(--font-primary);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Performance optimizations */
*,
*::before,
*::after {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* GPU acceleration for smoother animations */
.header,
.hero-slide,
.nav-menu,
.service-card,
.team-member,
.value-card,
.partner-logo-card,
.historical-card,
.advantage-item {
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-speed);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
    font-family: inherit;
}

/* ==========================================
   Utility Classes
   ========================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.title-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 0 auto 20px;
    border-radius: 2px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 35px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 50px;
    transition: all var(--transition-speed);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(26, 77, 143, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(26, 77, 143, 0.4);
}

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

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* ==========================================
   Header & Navigation
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: box-shadow var(--transition-speed);
    will-change: box-shadow;
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.navbar {
    padding: 15px 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.8rem;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-link {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-color);
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-speed);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--light-color);
    color: var(--primary-color);
    border-radius: 25px;
    font-weight: 600;
    transition: all var(--transition-speed);
}

.lang-toggle:hover {
    background: var(--primary-color);
    color: var(--white);
}

.lang-toggle i {
    font-size: 1.1rem;
}

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* ==========================================
   Hero Carousel Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    padding-top: 80px;
    overflow: hidden;
}

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

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.3;
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--white);
    animation: fadeInUp 1s ease-out;
}

/* Carousel Navigation Buttons */
.carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.carousel-nav:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.carousel-nav.prev {
    left: 30px;
}

.carousel-nav.next {
    right: 30px;
}

/* Carousel Indicators */
.carousel-indicators {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    display: flex;
    gap: 15px;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: scale(1.2);
}

.indicator.active {
    background: var(--white);
    width: 40px;
    border-radius: 10px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    font-weight: 300;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    font-size: 2rem;
    animation: bounce 2s infinite;
}

/* ==========================================
   About Section
   ========================================== */
.about {
    padding: 100px 0;
    background: var(--white);
}

.about-content {
    margin-top: 40px;
}

.about-text {
    margin-bottom: 60px;
}

.about-description {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-color);
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 25px;
}

.about-text.compact {
    margin-bottom: 15px;
}

.about-intro {
    max-width: 1000px;
    margin: 0 auto;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: all var(--transition-speed);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}



/* ==========================================
   Team Section
   ========================================== */
.team {
    padding: 100px 0;
    background: var(--light-color);
}

/* CEO Section */
.ceo-section {
    margin-bottom: 60px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.ceo-card {
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--box-shadow);
    overflow: hidden;
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 0;
    width: 100%;
}

.ceo-image {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 30px;
}

.ceo-image i {
    font-size: 6rem;
    color: rgba(255, 255, 255, 0.9);
}

.ceo-content {
    padding: 35px 40px;
}

.ceo-header {
    margin-bottom: 20px;
    border-bottom: 2px solid var(--light-color);
    padding-bottom: 15px;
}

.ceo-name {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.ceo-title {
    font-size: 1rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 5px;
}

.ceo-credential {
    font-size: 0.9rem;
    color: var(--text-light);
    font-style: italic;
}

.ceo-bio {
    margin-bottom: 20px;
}

.ceo-bio p {
    line-height: 1.7;
    color: var(--text-color);
    font-size: 0.95rem;
}

.ceo-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.detail-section h4 {
    font-size: 1.1rem;
    color: var(--dark-color);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--accent-color);
}

.experience-list,
.education-list {
    list-style: none;
}

.experience-list li,
.education-list li {
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
    color: var(--text-color);
    line-height: 1.5;
    font-size: 0.9rem;
}

.experience-list li::before,
.education-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 0.8rem;
}

/* Team Members Grid */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.team-member {
    background: var(--white);
    padding: 35px 25px;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: all var(--transition-speed);
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

.member-image {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--white);
    flex-shrink: 0;
}

.member-name {
    font-size: 1.2rem;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.member-role {
    color: var(--primary-color);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.member-bio {
    color: var(--text-color);
    font-size: 0.85rem;
    line-height: 1.6;
    text-align: left;
    margin-top: 10px;
    padding-top: 15px;
    border-top: 1px solid var(--light-color);
}

/* ==========================================
   Services Section - Simple Cards
   ========================================== */
.services {
    padding: 100px 0;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.service-card-simple {
    background: var(--white);
    padding: 40px 25px;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
    transition: all var(--transition-speed);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
}

.service-card-simple:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
    border-color: var(--primary-color);
}

.service-icon-simple {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 2rem;
    color: var(--white);
    transition: all var(--transition-speed);
}

.service-card-simple:hover .service-icon-simple {
    transform: scale(1.1) rotate(5deg);
}

.service-name {
    font-size: 1.1rem;
    color: var(--dark-color);
    font-weight: 600;
    line-height: 1.4;
    margin: 0;
}

/* ==========================================
   Partners Section
   ========================================== */
.partners {
    padding: 100px 0;
    background: var(--light-color);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.partner-logo-card {
    background: var(--white);
    padding: 30px 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all var(--transition-speed);
    border: 2px solid transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
}

.partner-logo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
    border-color: var(--accent-color);
}

.partner-logo-name {
    font-size: 0.95rem;
    color: var(--text-color);
    font-weight: 500;
    line-height: 1.4;
}



/* ==========================================
   Values Section
   ========================================== */
.values {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--dark-color), var(--primary-color));
    color: var(--white);
}

.values .section-title,
.values .section-description {
    color: var(--white);
}

/* Comparison Table Styles */
.comparison-table-wrapper {
    margin: 50px auto;
    max-width: 1200px;
    overflow-x: auto;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 30px;
    backdrop-filter: blur(10px);
}

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

.comparison-table thead th {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    padding: 20px 15px;
    text-align: left;
    font-weight: 600;
    font-size: 1.1rem;
    border-bottom: 3px solid var(--accent-color);
}

.comparison-table thead th:first-child {
    border-radius: 10px 0 0 0;
    width: 21%;
}

.comparison-table thead th.che-column {
    background: rgba(74, 158, 255, 0.2);
    border-bottom: 3px solid #4a9eff;
}

.comparison-table thead th.traditional-column {
    background: rgba(220, 53, 69, 0.2);
    border-bottom: 3px solid #dc3545;
    border-radius: 0 10px 0 0;
    width: 27%;
}

.comparison-table tbody tr {
    transition: background var(--transition-speed);
}

.comparison-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

.comparison-table tbody td {
    padding: 25px 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    vertical-align: top;
}

.category-cell {
    font-weight: 600;
    color: var(--white);
    background: rgba(255, 255, 255, 0.05);
}

.category-cell i {
    color: var(--accent-color);
    margin-right: 10px;
    font-size: 1.1rem;
}

.che-cell {
    background: rgba(74, 158, 255, 0.08);
}

.che-cell i.fa-check-circle {
    color: #4a9eff;
    margin-right: 10px;
    font-size: 1.1rem;
}

.traditional-cell {
    background: rgba(220, 53, 69, 0.08);
}

.traditional-cell i.fa-times-circle {
    color: #dc3545;
    margin-right: 10px;
    font-size: 1.1rem;
}

.che-cell span,
.traditional-cell span {
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
}

/* Key Advantages Section */
.key-advantages {
    margin-top: 60px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.advantages-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.advantage-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-speed);
}

.advantage-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.advantage-item i {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 15px;
    display: block;
}

.advantage-item p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin: 0;
}

/* Historical Business Section */
.historical-business {
    margin-top: 80px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.historical-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 25px;
    color: var(--white);
}

.historical-intro {
    text-align: center;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 50px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.historical-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.historical-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 35px 30px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-speed);
    position: relative;
    overflow: hidden;
}

.historical-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-color), transparent);
    transform: scaleY(0);
    transition: transform var(--transition-speed);
}

.historical-card:hover::before {
    transform: scaleY(1);
}

.historical-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.historical-number {
    position: absolute;
    top: 20px;
    right: 25px;
    font-size: 3rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.1);
    line-height: 1;
}

.historical-company {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 25px;
    font-weight: 600;
}

.historical-details {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.historical-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.historical-item i {
    color: var(--accent-color);
    font-size: 1.1rem;
    margin-top: 3px;
    flex-shrink: 0;
}

.historical-item span {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    flex: 1;
}

/* ==========================================
   Contact Section
   ========================================== */
.contact {
    padding: 100px 0;
    background: var(--light-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    margin-top: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--box-shadow);
    transition: all var(--transition-speed);
}

.info-item:hover {
    transform: translateX(10px);
    box-shadow: var(--box-shadow-hover);
}

.info-icon {
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-text h4 {
    font-size: 1.2rem;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.info-text p {
    color: var(--text-light);
    line-height: 1.6;
}

.contact-form-wrapper {
    background: var(--white);
    padding: 45px;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group input,
.form-group textarea {
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 77, 143, 0.1);
}

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

.contact-form .btn {
    width: 100%;
    padding: 16px;
    font-size: 1.1rem;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-logo i {
    font-size: 1.8rem;
    color: var(--accent-color);
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    margin-bottom: 25px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
}

.social-links a:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.footer-section h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--white);
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-speed);
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 8px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* ==========================================
   Back to Top Button
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 4px 15px rgba(26, 77, 143, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(26, 77, 143, 0.4);
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ==========================================
   Responsive Design
   ========================================== */

/* Desktop - Ensure 3 columns for team */
@media (min-width: 993px) {
    .team-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Tablet */
@media (max-width: 992px) {
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 280px;
        height: calc(100vh - 70px);
        background: var(--white);
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
        transition: left var(--transition-speed);
        padding: 30px;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 20px;
        align-items: flex-start;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero {
        padding-top: 70px;
    }
    
    .hero-carousel {
        height: calc(100vh - 70px);
    }
    
    .carousel-nav {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
    
    .carousel-nav.prev {
        left: 15px;
    }
    
    .carousel-nav.next {
        right: 15px;
    }
    
    .carousel-indicators {
        bottom: 80px;
        gap: 10px;
    }
    
    .indicator {
        width: 10px;
        height: 10px;
    }
    
    .indicator.active {
        width: 30px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    
    /* Comparison Table Responsive */
    .comparison-table-wrapper {
        padding: 20px;
    }
    
    .comparison-table thead th,
    .comparison-table tbody td {
        padding: 15px 10px;
        font-size: 0.9rem;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .advantages-title {
        font-size: 1.6rem;
    }
    
    /* Historical Business Responsive */
    .historical-title {
        font-size: 1.6rem;
    }
    
    .historical-intro {
        font-size: 0.95rem;
        margin-bottom: 40px;
    }
    
    .historical-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .historical-card {
        padding: 30px 25px;
    }
    
    .historical-number {
        font-size: 2.5rem;
        top: 15px;
        right: 20px;
    }
    
    .historical-company {
        font-size: 1.1rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .ceo-card {
        grid-template-columns: 1fr;
        max-width: 100%;
    }
    
    .ceo-image {
        padding: 30px;
    }

    .ceo-image img {
        height: 180px;
    }
    
    .ceo-image i {
        font-size: 4.5rem;
    }
    
    .ceo-content {
        padding: 30px 25px;
    }
    
    .ceo-details {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-form-wrapper {
        padding: 30px 20px;
    }
    
    .logo-text {
        font-size: 1.2rem;
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .carousel-nav {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .carousel-nav.prev {
        left: 10px;
    }
    
    .carousel-nav.next {
        right: 10px;
    }
    
    .carousel-indicators {
        bottom: 70px;
        gap: 8px;
    }
    
    .indicator {
        width: 8px;
        height: 8px;
    }
    
    .indicator.active {
        width: 25px;
    }
    
    .hero-title {
        font-size: 1.6rem;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    .logo i {
        font-size: 1.4rem;
    }
    
    .nav-actions {
        gap: 10px;
    }
    
    .lang-toggle {
        padding: 6px 15px;
        font-size: 0.9rem;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .partner-logo-card {
        padding: 25px 15px;
        min-height: 100px;
    }
    
    .partner-logo-name {
        font-size: 0.85rem;
    }
    
    /* Comparison Table Mobile */
    .comparison-table-wrapper {
        padding: 15px;
    }
    
    .comparison-table {
        font-size: 0.85rem;
    }
    
    .comparison-table thead th,
    .comparison-table tbody td {
        padding: 12px 8px;
    }
    
    .category-cell i,
    .che-cell i,
    .traditional-cell i {
        font-size: 0.9rem;
        margin-right: 5px;
    }
    
    .advantages-title {
        font-size: 1.4rem;
    }
    
    .advantage-item {
        padding: 20px;
    }
    
    .advantage-item i {
        font-size: 1.5rem;
    }
    
    /* Historical Business Mobile */
    .historical-title {
        font-size: 1.4rem;
    }
    
    .historical-intro {
        font-size: 0.9rem;
        padding: 0 10px;
    }
    
    .historical-card {
        padding: 25px 20px;
    }
    
    .historical-number {
        font-size: 2rem;
        top: 12px;
        right: 15px;
    }
    
    .historical-company {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    
    .historical-item {
        gap: 10px;
    }
    
    .historical-item i {
        font-size: 1rem;
    }
    
    .historical-item span {
        font-size: 0.9rem;
    }
}