/* Custom variables */
:root {
    --navy: #0F172A;
    --navy-light: #1E293B;
    --blue: #2563EB;
    --blue-dark: #1E40AF;
    --blue-glow: rgba(37, 99, 235, 0.15);
    --white: #FFFFFF;
    --gray-light: #F8FAFC;
    --gray-medium: #E2E8F0;
    --gray-text: #64748B;
    --gradient: linear-gradient(135deg, #0F172A 0%, #1E3A8A 50%, #2563EB 100%);
    --font-primary: 'Be Vietnam Pro', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.05);
    --shadow-medium: 0 20px 40px rgba(15, 23, 42, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.12);
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Layout section spacing */
.section {
    padding: 100px 0;
}

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

.text-center {
    text-align: center;
}

/* Section Header styling */
.section-header {
    margin-bottom: 60px;
}

.section-tag {
    font-family: var(--font-secondary);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--blue);
    display: inline-block;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--navy);
    letter-spacing: -0.5px;
}

.section-divider {
    width: 60px;
    height: 4px;
    background-color: var(--blue);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--navy);
}
::-webkit-scrollbar-thumb {
    background: var(--blue);
    border-radius: 4px;
}

/* Header & Nav */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 24px 0;
    transition: var(--transition-smooth);
    background: transparent;
}

.main-header.scrolled {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 16px 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-secondary);
    font-weight: 900;
    font-size: 1.25rem;
    color: var(--white);
    text-decoration: none;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo-accent {
    color: var(--blue);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-family: var(--font-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--blue);
    transition: var(--transition-smooth);
}

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

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

.nav-cta-btn {
    background-color: var(--blue);
    color: var(--white);
    padding: 10px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.nav-cta-btn:hover {
    background-color: var(--blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 1001;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--white);
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero-section {
    background: var(--gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 120px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-image: radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: center;
}

.hero-content {
    color: var(--white);
    z-index: 2;
}

.hero-tag {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 8px 18px;
    border-radius: var(--radius-xl);
    font-family: var(--font-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 24px;
    color: rgba(255, 255, 255, 0.9);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 16px;
    letter-spacing: -1.5px;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    font-weight: 500;
    color: var(--blue);
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 36px;
    max-width: 580px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    font-family: var(--font-secondary);
}

.btn-primary {
    background-color: var(--blue);
    color: var(--white);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    background-color: var(--blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.hero-image-container {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
}

.hero-image {
    width: 100%;
    max-width: 550px;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 25px 50px rgba(0, 0, 0, 0.3));
    animation: float 6s ease-in-out infinite;
}

.hero-image-glow {
    position: absolute;
    width: 350px;
    height: 350px;
    background: var(--blue);
    filter: blur(120px);
    opacity: 0.25;
    border-radius: 50%;
    z-index: -1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* Services Section Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.service-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(15, 23, 42, 0.03);
    transition: var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
    border-color: rgba(37, 99, 235, 0.15);
}

.service-icon {
    width: 60px;
    height: 60px;
    background-color: var(--blue-glow);
    color: var(--blue);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition-smooth);
}

.service-card:hover .service-icon {
    background-color: var(--blue);
    color: var(--white);
    transform: scale(1.05);
}

.service-name {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--navy);
}

.service-desc {
    color: var(--gray-text);
    font-size: 0.95rem;
}

/* Advantages Section */
.advantages-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.advantage-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.adv-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background-color: #DEF7EC;
    color: #03543F;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.adv-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 6px;
}

.adv-desc {
    color: var(--gray-text);
    font-size: 0.95rem;
}

/* Fleet Section */
.fleet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.fleet-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    background: var(--gray-medium);
    aspect-ratio: 4/3;
    box-shadow: var(--shadow-soft);
}

.fleet-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fleet-card:hover img {
    transform: scale(1.08);
}

/* Price Section */
.price-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}

.price-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--gray-medium);
    position: relative;
    transition: var(--transition-smooth);
}

.price-card.highlighted {
    border: 2px solid var(--blue);
    transform: scale(1.03);
    box-shadow: var(--shadow-medium);
}

.popular-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--blue);
    color: var(--white);
    font-family: var(--font-secondary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: var(--radius-xl);
}

.price-category {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 16px;
}

.price-value {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--blue);
    margin-bottom: 32px;
}

.price-unit {
    font-size: 0.95rem;
    color: var(--gray-text);
    font-weight: 400;
}

.price-details {
    list-style: none;
    margin-bottom: 40px;
    text-align: left;
    display: inline-block;
}

.price-details li {
    font-size: 0.95rem;
    color: var(--gray-text);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.price-details li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--blue);
}

.price-btn {
    display: block;
    width: 100%;
    padding: 14px;
    background-color: var(--gray-light);
    color: var(--navy);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-smooth);
    border: 1px solid rgba(15, 23, 42, 0.05);
}

.price-card:hover .price-btn {
    background-color: var(--blue);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.price-card.highlighted .price-btn {
    background-color: var(--blue);
    color: var(--white);
}

.price-card.highlighted:hover .price-btn {
    background-color: var(--blue-dark);
}

.price-note {
    max-width: 800px;
    margin: 0 auto;
    color: var(--gray-text);
    font-size: 0.9rem;
}

/* Service Area Section badge */
.area-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.area-badge {
    background-color: var(--white);
    color: var(--navy);
    padding: 14px 28px;
    font-weight: 600;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(15, 23, 42, 0.03);
    transition: var(--transition-smooth);
}

.area-badge:hover {
    background-color: var(--blue);
    color: var(--white);
    transform: translateY(-2px);
}

/* FAQ Accordion */
.faq-accordion-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background-color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--gray-medium);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--navy);
    text-align: left;
    cursor: pointer;
}

.faq-icon {
    transition: var(--transition-smooth);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    color: var(--gray-text);
    padding: 0 24px;
}

.faq-answer p {
    padding-bottom: 24px;
    font-size: 0.95rem;
    line-height: 1.7;
}

.faq-item.active {
    border-color: rgba(37, 99, 235, 0.3);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--blue);
}

/* Footer Section */
.main-footer {
    background-color: var(--navy);
    color: rgba(255, 255, 255, 0.7);
    padding: 80px 0 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr 0.8fr;
    gap: 64px;
    margin-bottom: 60px;
}

.footer-info .logo {
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-contact h4, .footer-links h4 {
    color: var(--white);
    font-weight: 600;
    margin-bottom: 24px;
    font-size: 1.15rem;
}

.footer-contact p {
    margin-bottom: 12px;
}

.footer-contact a {
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 24px;
    font-size: 0.85rem;
}

/* Floating Actions Button with pulse animation */
.floating-container {
    position: fixed;
    bottom: 32px;
    right: 32px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    z-index: 999;
}

.float-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    transition: var(--transition-smooth);
    position: relative;
}

.float-zalo {
    background-color: #0084FF;
}

.float-phone {
    background-color: #10B981;
}

.float-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: inherit;
    opacity: 0.4;
    z-index: -1;
    animation: pulse 2s infinite;
}

.float-btn:hover {
    transform: translateY(-4px) scale(1.05);
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.5; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* Page content styles for Policy & Terms */
.page-header {
    background: var(--gradient);
    padding: 160px 0 80px;
    color: var(--white);
    text-align: center;
}

.page-content {
    padding: 80px 0;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
}

.article-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 40px;
    margin-bottom: 16px;
}

.article-content p, .article-content ul {
    margin-bottom: 20px;
    color: var(--navy-light);
    font-size: 1rem;
    line-height: 1.8;
}

.article-content ul {
    padding-left: 20px;
}

/* Intersection Observer animations styles */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-smooth);
}

.fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: var(--transition-smooth);
}

.fade-in-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile responsive style */
@media (max-width: 991px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 60px;
    }
    
    .hero-desc {
        margin: 0 auto 36px;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-image-container {
        order: -1;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--navy);
        flex-direction: column;
        justify-content: center;
        gap: 24px;
        padding: 40px;
        transition: var(--transition-smooth);
        box-shadow: -10px 0 30px rgba(0,0,0,0.3);
    }

    .nav-menu.active {
        right: 0;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .floating-container {
        bottom: 24px;
        right: 24px;
    }
}
/* Fleet Card Overlay Style */
.fleet-card {
    position: relative;
}

.fleet-info-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 24px;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.4) 70%, transparent 100%);
    color: var(--white);
    transform: translateY(100%);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

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

.fleet-info-overlay h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0;
}

.fleet-info-overlay span {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
}