/* ==========================================================================
   DESIGN SYSTEM & CUSTOM VARIABLES
   ========================================================================== */
:root {
    /* Color Palette */
    --primary: #D32F2F;        /* Emergency Crimson */
    --primary-hover: #B71C1C;
    --secondary: #0D47A1;      /* Deep Trust Blue */
    --secondary-hover: #0A3780;
    --accent: #FF9800;         /* Amber Warning */
    --accent-hover: #F57C00;
    --success: #2E7D32;        /* Zalo & Success Green */
    --success-hover: #1B5E20;
    
    /* Neutral Colors */
    --dark-bg: #1A202C;
    --dark-surface: #2D3748;
    --light-bg: #F7FAFC;
    --light-surface: #FFFFFF;
    --border-color: #E2E8F0;
    
    /* Text Colors */
    --text-main: #2D3748;
    --text-muted: #718096;
    --text-light: #FFFFFF;
    
    /* Shadows & Border Radius */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    /* Layout Constants */
    --max-width: 1200px;
    --header-height: 80px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--light-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--dark-bg);
    line-height: 1.25;
}

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

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

ul {
    list-style: none;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: 1rem;
    border: none;
    outline: none;
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title .sub-title {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.section-title h2 {
    font-size: 2.25rem;
    color: var(--secondary);
    margin-bottom: 15px;
    text-transform: uppercase;
}

.section-title .title-line {
    width: 80px;
    height: 4px;
    background-color: var(--primary);
    margin: 0 auto 20px;
    border-radius: var(--radius-full);
}

.section-title .section-desc {
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-muted);
}

.d-none {
    display: none !important;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    gap: 8px;
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--secondary);
    color: var(--text-light);
}

.btn-primary:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background-color: var(--primary);
    color: var(--text-light);
}

.btn-danger:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline-light:hover {
    background-color: var(--text-light);
    color: var(--secondary);
    transform: translateY(-2px);
}

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

.btn-outline-primary:hover {
    background-color: var(--secondary);
    color: var(--text-light);
}

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

.btn-light:hover {
    background-color: #f1f1f1;
    transform: scale(1.05);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.05rem;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

/* Micro-animations */
@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(211, 47, 47, 0.7);
    }
    70% {
        transform: scale(1.05);
        box-shadow: 0 0 0 15px rgba(211, 47, 47, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(211, 47, 47, 0);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* ==========================================================================
   TOP BAR
   ========================================================================== */
.top-bar {
    background-color: var(--dark-bg);
    color: var(--text-light);
    font-size: 0.85rem;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

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

.top-bar-left, .top-bar-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.top-bar-left a {
    color: var(--accent);
}

.top-bar-left a:hover {
    color: var(--text-light);
}

.top-bar-left .separator {
    opacity: 0.3;
}

/* ==========================================================================
   HEADER / MENU
   ========================================================================== */
.main-header {
    background-color: var(--light-surface);
    height: var(--header-height);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.main-header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    height: 70px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

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

/* Logo styling */
.logo a {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    max-height: 55px;
    width: auto;
    object-fit: contain;
}

/* Nav Menu */
.nav-menu ul {
    display: flex;
    align-items: center;
    gap: 25px;
}

.nav-menu a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
    position: relative;
    padding: 8px 0;
}

.nav-menu a:hover, .nav-menu a.active {
    color: var(--primary);
}

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

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

.nav-menu .btn-nav-cta::after {
    display: none;
}

.nav-menu .btn-nav-cta {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-light) !important;
}

/* Dropdown styling */
.nav-menu li.dropdown {
    position: relative;
}

.nav-menu li.dropdown > a {
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-menu li.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--light-surface);
    min-width: 220px;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-normal);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.dropdown-menu li {
    width: 100%;
}

.dropdown-menu li a {
    display: block;
    padding: 10px 20px !important;
    font-size: 0.9rem !important;
    color: var(--text-main) !important;
    font-weight: 500 !important;
    border-bottom: none !important;
}

.dropdown-menu li a:hover {
    background-color: rgba(13, 71, 161, 0.05);
    color: var(--primary) !important;
}

.dropdown-menu li a::after {
    display: none !important;
}

/* Menu Toggle (Mobile Hamburger) */
.menu-toggle {
    display: none;
    background: transparent;
    font-size: 1.5rem;
    color: var(--secondary);
    cursor: pointer;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
    position: relative;
    background-image: url('../assets/banner_cua_cuon.jpg');
    background-size: cover;
    background-position: center;
    padding: 100px 0;
    min-height: 580px;
    display: flex;
    align-items: center;
    color: var(--text-light);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(13, 71, 161, 0.9) 0%, rgba(26, 32, 44, 0.85) 100%);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
}

.hero-content {
    max-width: 650px;
}

.badge-emergency {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--primary);
    color: var(--text-light);
    font-weight: 700;
    font-size: 0.85rem;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    margin-bottom: 25px;
    text-transform: uppercase;
}

.hero h1 {
    font-size: 3.2rem;
    color: var(--text-light);
    margin-bottom: 15px;
    font-weight: 800;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 35px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

/* Booking box styling */
.hero-booking-box {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-xl);
    color: var(--text-light);
}

.hero-booking-box h3 {
    font-size: 1.35rem;
    color: var(--text-light);
    margin-bottom: 8px;
    text-align: center;
}

.hero-booking-box p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
    text-align: center;
    margin-bottom: 20px;
}

.quick-form .form-group {
    margin-bottom: 15px;
}

.quick-form input, .quick-form select {
    width: 100%;
    padding: 12px;
    border-radius: var(--radius-md);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-main);
    font-size: 0.95rem;
}

.quick-form select {
    cursor: pointer;
}

.form-status {
    margin-top: 15px;
    font-size: 0.85rem;
    text-align: center;
    padding: 8px;
    border-radius: var(--radius-sm);
    display: none;
}

.form-status.success {
    background-color: rgba(46, 125, 50, 0.3);
    border: 1px solid var(--success);
    color: #81C784;
    display: block;
}

.form-status.error {
    background-color: rgba(211, 47, 47, 0.3);
    border: 1px solid var(--primary);
    color: #E57373;
    display: block;
}

/* ==========================================================================
   TRUST SIGNALS
   ========================================================================== */
.trust-signals {
    background-color: var(--light-surface);
    padding: 35px 0;
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 5;
    margin-top: -30px;
    border-radius: var(--radius-md);
    max-width: 1160px;
    margin-left: auto;
    margin-right: auto;
}

.trust-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.trust-card {
    display: flex;
    align-items: center;
    gap: 15px;
}

.trust-icon {
    font-size: 1.8rem;
    color: var(--primary);
    background-color: rgba(211, 47, 47, 0.08);
    width: 54px;
    height: 54px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.trust-info h4 {
    font-size: 0.95rem;
    color: var(--secondary);
    margin-bottom: 2px;
}

.trust-info p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.3;
}

/* ==========================================================================
   EMERGENCY ALERTS
   ========================================================================== */
.emergency-alert {
    background-color: var(--primary);
    color: var(--text-light);
    padding: 30px 0;
}

.alert-content-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.alert-bell {
    font-size: 2.2rem;
    background-color: rgba(255,255,255,0.2);
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 1.5s infinite;
}

.alert-text {
    flex-grow: 1;
}

.alert-text h3 {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 5px;
}

.alert-text p {
    font-size: 0.95rem;
    opacity: 0.9;
}

.emergency-alert .btn-light {
    font-size: 1.1rem;
    padding: 14px 28px;
    font-weight: 700;
}

/* ==========================================================================
   SERVICES SECTION
   ========================================================================== */
.services-section {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background-color: var(--light-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(13, 71, 161, 0.2);
}

.service-image {
    background: linear-gradient(135deg, var(--secondary) 0%, #1976D2 100%);
    color: var(--text-light);
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
}

.service-card:hover .service-image i {
    transform: scale(1.1) rotate(5deg);
    transition: var(--transition-normal);
}

.service-body {
    padding: 30px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.service-body h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--secondary);
}

.service-body p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.service-bullets {
    margin-bottom: 25px;
    font-size: 0.85rem;
}

.service-bullets li {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: var(--text-main);
}

.service-bullets li i {
    color: var(--success);
}

.service-link {
    font-weight: 700;
    color: var(--primary);
    font-size: 0.9rem;
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.service-link:hover {
    color: var(--primary-hover);
    gap: 10px;
}

/* ==========================================================================
   PRODUCTS SECTION
   ========================================================================== */
.products-section {
    padding: 80px 0;
    background-color: var(--light-surface);
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    background-color: var(--light-bg);
    color: var(--text-main);
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
}

.tab-btn.active, .tab-btn:hover {
    background-color: var(--secondary);
    color: var(--text-light);
    border-color: var(--secondary);
    box-shadow: var(--shadow-md);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background-color: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 35px 30px;
    position: relative;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
    background-color: var(--light-surface);
    border-color: var(--primary);
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--accent);
    color: var(--text-light);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.product-icon-wrap {
    width: 64px;
    height: 64px;
    background-color: rgba(13, 71, 161, 0.06);
    color: var(--secondary);
    font-size: 2rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.product-card h3 {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 12px;
}

.product-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 25px;
    flex-grow: 1;
}

.price-range {
    font-size: 0.95rem;
    color: var(--text-main);
    margin-bottom: 20px;
    border-top: 1px dashed var(--border-color);
    padding-top: 15px;
}

.price-range strong {
    color: var(--primary);
    font-size: 1.2rem;
}

.product-card .btn {
    margin-top: auto;
}

/* ==========================================================================
   CALCULATOR SECTION
   ========================================================================== */
.calculator-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #0d47a1 0%, #1e88e5 100%);
    color: var(--text-light);
}

.calculator-section .section-title h2, 
.calculator-section .section-title .section-desc {
    color: var(--text-light);
}

.calculator-section .section-title .sub-title {
    color: var(--accent);
}

.calculator-section .section-title .title-line {
    background-color: var(--accent);
}

.calculator-wrapper {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    max-width: 900px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.calc-inputs {
    padding: 40px;
    border-right: 1px solid rgba(255,255,255,0.2);
}

.input-row {
    margin-bottom: 25px;
}

.input-row label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.input-row select, .input-row input {
    width: 100%;
    padding: 14px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    background-color: var(--light-surface);
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

.calc-results {
    padding: 40px;
    background-color: rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.calc-results h4 {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 15px;
}

.price-display {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 15px;
}

.calc-note {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 30px;
}

.calc-actions {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.btn-success {
    background-color: var(--success);
    color: var(--text-light);
}

.btn-success:hover {
    background-color: var(--success-hover);
    transform: translateY(-2px);
}

/* ==========================================================================
   PRICING TABLE SECTION
   ========================================================================== */
.pricing-section {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.table-responsive {
    overflow-x: auto;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    background-color: var(--light-surface);
    margin-bottom: 30px;
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    min-width: 700px;
}

.pricing-table th, .pricing-table td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

.pricing-table th {
    background-color: var(--secondary);
    color: var(--text-light);
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
}

.pricing-table td {
    font-size: 0.95rem;
}

.pricing-table tbody tr:hover {
    background-color: rgba(13, 71, 161, 0.02);
}

.pricing-table tr.table-category td {
    background-color: #ECEFF1;
    font-weight: 700;
    color: var(--secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pricing-table td:nth-child(3) {
    font-weight: 700;
    color: var(--primary);
}

.pricing-table td:nth-child(4) {
    color: var(--success);
    font-weight: 600;
}

.pricing-footer {
    max-width: 900px;
    margin: 0 auto;
    background-color: rgba(13, 71, 161, 0.04);
    border-left: 4px solid var(--secondary);
    padding: 20px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.pricing-footer p {
    font-size: 0.85rem;
    color: var(--text-main);
    line-height: 1.5;
}

.pricing-footer i {
    color: var(--secondary);
    margin-right: 5px;
}

/* ==========================================================================
   WORK PROCESS SECTION
   ========================================================================== */
.process-section {
    padding: 80px 0;
    background-color: var(--light-surface);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    position: relative;
}

.step-card {
    background-color: var(--light-bg);
    border-radius: var(--radius-md);
    padding: 40px 30px;
    position: relative;
    border: 1px solid var(--border-color);
}

.step-number {
    position: absolute;
    top: -25px;
    left: 30px;
    background: linear-gradient(135deg, var(--primary) 0%, #E53935 100%);
    color: var(--text-light);
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.step-card h3 {
    font-size: 1.2rem;
    color: var(--secondary);
    margin-top: 10px;
    margin-bottom: 15px;
}

.step-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================================================
   CUSTOMER REVIEWS (TESTIMONIALS)
   ========================================================================== */
.reviews-section {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card {
    background-color: var(--light-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 35px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.review-stars {
    color: var(--accent);
    font-size: 0.9rem;
}

.review-badge {
    background-color: #E8F5E9;
    color: var(--success);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.review-text {
    font-style: italic;
    color: var(--text-main);
    font-size: 0.95rem;
    margin-bottom: 25px;
    line-height: 1.6;
    flex-grow: 1;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background-color: #ECEFF1;
    color: var(--text-muted);
    font-size: 1.4rem;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    font-size: 0.95rem;
    color: var(--secondary);
}

.author-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-section {
    padding: 80px 0;
    background-color: var(--light-surface);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.panel-sub {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
    display: block;
}

.contact-info-panel h2 {
    font-size: 2.25rem;
    color: var(--secondary);
    margin-bottom: 20px;
    text-transform: uppercase;
}

.contact-info-panel p {
    color: var(--text-muted);
    margin-bottom: 35px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 35px;
}

.method-card {
    display: flex;
    align-items: center;
    gap: 20px;
}

.method-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background-color: rgba(13, 71, 161, 0.06);
    color: var(--secondary);
    font-size: 1.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.method-details span {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.method-details a, .method-details p {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--secondary);
}

.method-details a:hover {
    color: var(--primary);
}

/* Styled Map Placeholder */
.map-container {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.map-placeholder {
    background-color: var(--dark-bg);
    color: var(--text-light);
    padding: 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 180px;
    position: relative;
    background-image: linear-gradient(rgba(13,71,161,0.85), rgba(13,71,161,0.85)), url('../assets/banner_cua_cuon.jpg');
    background-size: cover;
    background-position: center;
}

.map-placeholder i {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 15px;
}

.map-placeholder h4 {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.map-placeholder p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 0;
}

/* Form Panel Styling */
.contact-form-panel {
    background-color: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 45px 40px;
    box-shadow: var(--shadow-md);
}

.contact-form-panel h3 {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: 8px;
}

.contact-form-panel p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.contact-form label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-main);
}

.contact-form label .required {
    color: var(--primary);
}

.contact-form input, .contact-form select, .contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--light-surface);
    color: var(--text-main);
    transition: var(--transition-fast);
    font-size: 0.95rem;
}

.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(13, 71, 161, 0.15);
}

.contact-form textarea {
    resize: vertical;
}

/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
.site-footer {
    background-color: var(--dark-bg);
    color: rgba(255, 255, 255, 0.85);
    padding: 70px 0 0;
    border-top: 5px solid var(--secondary);
}

.footer-container {
    display: grid;
    grid-template-columns: 1.2fr 0.9fr 0.9fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-col h4 {
    color: var(--text-light);
    font-size: 1.15rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
    text-transform: uppercase;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary);
    border-radius: var(--radius-full);
}

/* About column */
.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo-img {
    max-height: 60px;
    background-color: rgba(255, 255, 255, 0.95);
    padding: 5px 10px;
    border-radius: var(--radius-sm);
}

.footer-about p {
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 25px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 36px;
    height: 36px;
    background-color: rgba(255,255,255,0.06);
    color: var(--text-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--primary);
    transform: translateY(-2px);
}

/* Links column */
.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-links ul li a:hover {
    color: var(--accent);
    padding-left: 5px;
}

.footer-links ul li a i {
    font-size: 0.75rem;
}

/* Contact Column */
.footer-contact p {
    font-size: 0.85rem;
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.footer-contact p i {
    color: var(--accent);
    font-size: 0.95rem;
    margin-top: 3px;
    flex-shrink: 0;
}

.footer-contact p a {
    color: var(--accent);
    font-weight: 700;
}

.footer-contact p a:hover {
    color: var(--text-light);
}

/* Bottom Bar */
.footer-bottom {
    background-color: #111622;
    padding: 25px 0;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom .copyright {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
}

.footer-bottom .copyright strong {
    color: rgba(255,255,255,0.7);
}

.footer-terms {
    display: flex;
    gap: 20px;
}

.footer-terms a {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
}

.footer-terms a:hover {
    color: var(--accent);
}

/* ==========================================================================
   FLOATING ACTION BUTTONS
   ========================================================================== */
.floating-actions {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.float-btn {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    cursor: pointer;
    position: relative;
}

.float-icon-wrapper {
    width: 55px;
    height: 55px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    position: relative;
    z-index: 2;
    transition: var(--transition-normal);
}

.float-label {
    background-color: var(--dark-bg);
    color: var(--text-light);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    position: absolute;
    right: 65px;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(10px);
    transition: var(--transition-normal);
    pointer-events: none;
    z-index: 1;
}

/* Hover behaviors */
.float-btn:hover .float-icon-wrapper {
    transform: scale(1.1);
}

.float-btn:hover .float-label {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

/* Specific button styles */
.float-zalo .float-icon-wrapper {
    background-color: #2E7D32; /* Rich Zalo Green */
}

.float-zalo .float-icon-wrapper::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: rgba(46, 125, 50, 0.4);
    z-index: -1;
    animation: pulse 1.8s infinite;
}

.float-phone .float-icon-wrapper {
    background-color: #D32F2F; /* Alert Crimson */
}

.float-phone .float-icon-wrapper::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: rgba(211, 47, 47, 0.4);
    z-index: -1;
    animation: pulse 1.5s infinite;
}

.float-quote .float-icon-wrapper {
    background-color: #FF9800; /* Attention Orange */
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */

/* Laptop / Small Desktop */
@media (max-width: 1200px) {
    .trust-signals {
        margin-left: 20px;
        margin-right: 20px;
    }
}

/* Tablet (Landscape & Portrait) */
@media (max-width: 991px) {
    html {
        font-size: 15px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .hero-content {
        max-width: 100%;
        text-align: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .badge-emergency {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-booking-box {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .trust-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px 30px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .calculator-wrapper {
        grid-template-columns: 1fr;
    }
    
    .calc-inputs {
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.2);
    }
    
    .process-steps {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 55px;
    }
    
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Devices */
@media (max-width: 767px) {
    :root {
        --header-height: 70px;
    }
    
    .top-bar {
        display: none; /* Hide top bar on mobile to save space */
    }
    
    .main-header {
        position: fixed;
        width: 100%;
        box-shadow: var(--shadow-md);
    }
    
    .hero {
        padding-top: 100px; /* Offset fixed header */
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    /* Navigation responsive menu */
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: calc(100vh - var(--header-height));
        background-color: var(--light-surface);
        box-shadow: 10px 0 15px -3px rgba(0,0,0,0.1);
        transition: var(--transition-normal);
        z-index: 999;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: flex-start;
        padding: 30px 20px;
        gap: 20px;
        width: 100%;
    }
    
    .nav-menu ul li {
        width: 100%;
    }
    
    .nav-menu ul li a {
        display: block;
        width: 100%;
        padding: 10px 0;
        font-size: 1.1rem;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-menu a::after {
        display: none;
    }
    
    .nav-menu .nav-cta-item {
        margin-top: 10px;
    }
    
    .nav-menu .btn-nav-cta {
        justify-content: center;
    }
    
    .nav-menu li.dropdown {
        width: 100%;
    }
    
    .nav-menu li.dropdown:hover .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background-color: rgba(13, 71, 161, 0.02);
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background-color: rgba(13, 71, 161, 0.02);
        padding: 5px 0 5px 15px;
        min-width: 100%;
        display: block;
        margin-top: 5px;
    }
    
    /* Elements adjustment */
    .trust-signals {
        margin-top: 20px;
        padding: 25px 0;
    }
    
    .trust-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .alert-content-wrapper {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .alert-bell {
        margin: 0 auto;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .tab-buttons {
        gap: 8px;
    }
    
    .tab-btn {
        padding: 10px 18px;
        font-size: 0.9rem;
    }
    
    .calc-inputs, .calc-results {
        padding: 25px;
    }
    
    .price-display {
        font-size: 2.2rem;
    }
    
    .contact-form .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .contact-form-panel {
        padding: 30px 20px;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom-container {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .footer-terms {
        justify-content: center;
    }
    
    /* Floating mobile actions style (adjusting location) */
    .floating-actions {
        bottom: 15px;
        right: 15px;
        gap: 10px;
    }
    
    .float-icon-wrapper {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .float-label {
        display: none; /* Hide text on mobile to avoid overlapping */
    }
    
    .logo-img {
        max-height: 45px;
    }
}

/* ==========================================================================
   CATEGORY HEADER & BREADCRUMBS
   ========================================================================== */
.category-header {
    background-color: #F8FAFC;
    padding: 35px 0 30px;
    border-bottom: 1px solid #E2E8F0;
    margin-bottom: 20px;
}

.breadcrumb {
    display: flex !important;
    align-items: center !important;
    flex-direction: row !important;
    gap: 10px !important;
    flex-wrap: wrap !important;
    list-style: none !important;
    padding: 0 !important;
    margin: 0 0 15px 0 !important;
    font-size: 0.9rem;
}

.breadcrumb li {
    display: inline-flex !important;
    align-items: center !important;
    gap: 10px !important;
    color: var(--text-muted);
    margin: 0 !important;
    padding: 0 !important;
}

.breadcrumb li a {
    color: var(--secondary);
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.breadcrumb li.active {
    color: var(--primary);
    font-weight: 700;
}

.breadcrumb li i {
    font-size: 0.75rem;
    color: #94A3B8;
}

.category-header h1 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.3;
}

.category-desc {
    font-size: 0.95rem;
    color: #475569;
    line-height: 1.6;
    max-width: 950px;
    margin: 0;
}

/* Official Zalo Logo Image Styles (Perfect Circular Floating Button) */
.zalo-icon-img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    border-radius: 50% !important;
    display: block;
}

.float-zalo {
    background-color: transparent !important;
}

.float-zalo .float-icon-wrapper {
    background-color: #0068FF !important;
    border-radius: 50% !important;
    overflow: hidden !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

.float-zalo .float-icon-wrapper::after {
    background-color: rgba(0, 104, 255, 0.4) !important;
    border-radius: 50% !important;
}

.zalo-social-img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    vertical-align: middle;
    border-radius: 4px;
}

/* ==========================================================================
   LIVE SOCIAL PROOF POPUP NOTIFICATIONS (GÓC DƯỚI TRÁI)
   ========================================================================== */
.social-proof-toast {
    position: fixed;
    bottom: 25px;
    left: 25px;
    z-index: 99990;
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: #FFFFFF;
    color: #1E293B;
    padding: 12px 16px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18), 0 2px 8px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #D32F2F;
    max-width: 340px;
    font-family: 'Inter', sans-serif;
    transform: translateY(120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease, visibility 0.3s ease;
}

.social-proof-toast.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.toast-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #FEF2F2;
    color: #D32F2F;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
    box-shadow: inset 0 0 0 1px rgba(211, 47, 47, 0.15);
}

.toast-content {
    flex: 1;
    font-size: 0.82rem;
    line-height: 1.4;
    padding-right: 12px;
}

.toast-name {
    font-weight: 700;
    color: #0F172A;
    font-size: 0.88rem;
    display: block;
}

.toast-action {
    color: #334155;
    margin: 2px 0;
}

.toast-action strong {
    color: #0284C7;
}

.toast-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: #64748B;
    margin-top: 3px;
}

.toast-meta .status-badge {
    color: #16A34A;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.toast-close {
    position: absolute;
    top: 6px;
    right: 8px;
    background: none;
    border: none;
    color: #94A3B8;
    font-size: 0.85rem;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
    transition: color 0.2s;
}

.toast-close:hover {
    color: #0F172A;
}

@media (max-width: 576px) {
    .social-proof-toast {
        bottom: 85px;
        left: 15px;
        right: 15px;
        max-width: calc(100% - 30px);
    }
}