@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700;800&family=Roboto:wght@300;400;500;700&display=swap');

:root {
    --primary-color: #CC0000;
    --primary-hover: #AA0000;
    --secondary-color: #004A99;
    --accent-color: #FFD700;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-white: #FFFFFF;
    --bg-light: #F8FBFF;
    --bg-dark: #001A33;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.05);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Typography Sizes */
    --font-section-title: 32px;
    --font-subtitle: 28px;
    --font-strong: 24px;
    --font-text: 20px;
}

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

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

h1,
h2,
h3,
.serif {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
}

/* Global Typography */
h2 {
    font-size: var(--font-section-title);
}

h3 {
    font-size: var(--font-subtitle);
}

strong {
    font-size: var(--font-strong);
}

p,
li {
    font-size: var(--font-text);
}

section {
    padding: 80px 5%;
}

section#order {
    padding: 50px 5%;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Utils */
.btn-primary {
    background-color: var(--primary-color);
    color: white;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 5px 15px rgba(204, 0, 0, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(204, 0, 0, 0.4);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 5px 15px rgba(0, 74, 153, 0.3);
}

.btn-secondary:hover {
    background-color: #003770;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 74, 153, 0.4);
}

.btn-pulse {
    animation: btn-pulse 2s infinite;
}

@keyframes btn-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(204, 0, 0, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(204, 0, 0, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(204, 0, 0, 0);
    }
}

/* Header */
header {
    background: linear-gradient(135deg, #001a33 0%, #003366 100%);
    padding: 15px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.logo img {
    height: 60px;
}

/* Mobile-only nav inside header — hidden on desktop */
.mobile-header-nav {
    display: none;
}

/* Mobile CTA buttons inside header — hidden on desktop */
.mobile-header-buttons {
    display: none;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
    align-items: center;
}

nav a {
    text-decoration: none;
    color: white;
    font-weight: 500;
    font-size: 16px;
    transition: var(--transition-smooth);
}

nav a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

/* Hero Product Section */
.hero-product {
    background: linear-gradient(135deg, #e6f0ff 0%, #ffffff 100%);
    padding: 80px 5% 40px;
    min-height: 70vh;
    display: flex;
    align-items: center;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-feature-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 35px;
    margin-top: 25px;
}

.hero-feature-item {
    display: flex;
    align-items: flex-start;
    background: rgba(255, 255, 255, 0.7);
    padding: 12px 15px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.hero-feature-item:hover {
    transform: translateX(5px);
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.feature-icon-wrapper {
    width: 25px;
    height: 25px;
    min-width: 25px;
    background: #e8f5e9;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    margin-top: 3px;
    color: #00cc00;
    font-weight: 900;
    font-size: 14px;
    flex-shrink: 0;
}

.feature-text {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.feature-text strong {
    color: var(--primary-color);
    font-size: var(--font-strong);
    font-weight: 800;
    letter-spacing: 0.5px;
}

.feature-text span {
    color: var(--text-dark);
    font-size: var(--font-text);
    line-height: 1.5;
}

.hero-image-product {
    text-align: center;
}

.hero-image-product img {
    max-width: 100%;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
    transition: var(--transition-smooth);
    animation: floatAndGlow 4s ease-in-out infinite;
}

@keyframes floatAndGlow {
    0% {
        transform: translateY(0) scale(1);
        filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15)) drop-shadow(0 0 10px rgba(255, 215, 0, 0));
    }

    50% {
        transform: translateY(-15px) scale(1.02);
        filter: drop-shadow(0 30px 50px rgba(0, 0, 0, 0.2)) drop-shadow(0 0 25px rgba(255, 215, 0, 0.4));
    }

    100% {
        transform: translateY(0) scale(1);
        filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15)) drop-shadow(0 0 10px rgba(255, 215, 0, 0));
    }
}

.hero-image-product img:hover {
    transform: translateY(-20px) scale(1.05);
    filter: drop-shadow(0 35px 60px rgba(0, 0, 0, 0.25)) drop-shadow(0 0 30px rgba(255, 215, 0, 0.6));
    animation-play-state: paused;
}

/* Cluster Layout for 3 Products */
.hero-image-product.cluster-layout {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    padding-top: 20px;
    padding-bottom: 20px;
}

.cluster-layout .product-main {
    position: relative;
    z-index: 3;
    width: 75%;
}

.cluster-layout .product-bg {
    position: absolute;
    z-index: 2;
    width: 58%;
    bottom: 12%;
    opacity: 0.85;
}

.cluster-layout .product-bg-1 {
    left: -2%;
}

.cluster-layout .product-bg-2 {
    right: -2%;
}

.cluster-layout img {
    width: 100%;
    display: block;
}

/* Press Section */
.press-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.press-item {
    display: flex;
    flex-direction: column;
    background: white;
    border-radius: 15px;
    overflow: hidden;
    text-decoration: none;
    color: var(--text-dark);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}

.press-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.press-item img {
    width: 100%;
    height:auto;
    object-fit: cover;
    border-bottom: 2px solid var(--primary-color);
}

.press-info {
    padding: 20px;
}

.press-info h4 {
    color: var(--primary-color);
    font-size: 14px;
    text-transform: uppercase;
    margin-bottom: 10px;
    font-weight: 800;
}

.press-info p {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.5;
    margin: 0;
}

/* Order Form Section */
.order-section {
    padding: 80px 5%;
}

/* Symptoms & Solution Section */
.symptoms-section {
    padding: 80px 5%;
}

.symptom-header {
    margin-bottom: 40px;
}

/* Reusing and refining existing Hero Symptoms styles */
.hero-symptoms-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.image-wrapper {
    position: relative;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.1);
}

.image-wrapper img {
    width: 100%;
    display: block;
    transition: var(--transition-smooth);
    
}
/* @media (max-width: 768px) {
    .image-wrapper img {
        width: 100%;
        max-width: 500px;
        margin: 0 auto;
        display: block;
    }
} */

.image-badge {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 700;
}

.benefit-bullets {
    list-style: none;
    padding: 0;
}

.benefit-bullets li {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    align-items: flex-start;
}

.bullet-icon-large {
    font-size: 28px;
    min-width: 60px;
    height: 60px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.bullet-desc {
    font-size: 18px;
    color: var(--text-dark);
}

.bullet-desc strong {
    color: var(--secondary-color);
}

@media (max-width: 992px) {

    .hero-grid,
    .hero-symptoms-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-grid {
        display: flex;
        flex-direction: column-reverse;
    }

    .hero-simple-bullets li {
        text-align: left;
    }

    .hero-title {
        font-size: 36px;
    }
}

/* Ingredients Section Enhancement */
.ingredient-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ingredient-list li {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px dashed #e1e1e1;
    transition: var(--transition-smooth);
}

.ingredient-list li:hover {
    transform: translateX(5px);
}

.ingredient-list li:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.ingredient-icon {
    font-size: 30px;
    min-width: 65px;
    height: 65px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fbff 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 5px 15px rgba(0, 74, 153, 0.08);
    /* slight blue tint shadow */
}

.ingredient-text {
    font-size: var(--font-text);
    color: var(--text-light);
    line-height: 1.6;
}

.ingredient-text strong {
    display: block;
    font-size: var(--font-strong);
    color: var(--secondary-color);
    margin-bottom: 6px;
}

/* Section Titles */
.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: var(--font-section-title);
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-title p {
    font-size: var(--font-text);
    color: var(--text-light);
}

/* Benefits (Mechanism) */
.benefits-mechanism {
    background-color: var(--bg-light);
}

.mechanism-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.mechanism-item {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}

.mechanism-item:hover {
    transform: scale(1.05);
}

.mechanism-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

/* Scientific Proof */
.scientific-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    align-items: stretch;
}

.science-card {
    border: 1px dashed var(--primary-color);
    padding: 30px;
    border-radius: 10px;
    background: white;
    display: flex;
    flex-direction: column;
    min-height: 600px;
}

.science-card h3 {
    color: var(--secondary-color);
    margin-bottom: 15px;
}

/* Audience Section */
.audience-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.audience-image .image-wrapper {
    border-radius: 24px;
    overflow: hidden;
}

.shadow-large {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.audience-list-wrapper {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
}

.audience-list {
    list-style: none;
    padding: 0;
}

.audience-list li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #f0f0f0;
}

.audience-list li:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.bullet-icon {
    min-width: 24px;
    height: 24px;
    background-color: var(--primary-color);
    border-radius: 50%;
    margin-top: 2px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bullet-icon::after {
    content: "";
    width: 10px;
    height: 6px;
    border-left: 2px solid white;
    border-bottom: 2px solid white;
    transform: rotate(-45deg);
    margin-top: -2px;
}

.bullet-text {
    font-size: var(--font-text);
    color: var(--text-dark);
}

.bullet-text strong {
    font-size: var(--font-strong);
    color: var(--secondary-color);
    display: inline-block;
    margin-right: 5px;
}

/* Order Form Section Enhancement */

.order-form-wrapper {
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    padding: 30px 35px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
    border: 1px solid #eee;
}

.order-header {
    margin-bottom: 18px;
}

.order-header h2 {
    color: var(--primary-color);
    margin-bottom: 5px;
    letter-spacing: -0.5px;
    font-size: 26px;
}

.order-header p {
    color: var(--text-light);
    font-size: 14px;
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-dark);
}

.form-group input[type="text"],
.form-group input[type="tel"] {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid #e1e1e1;
    border-radius: 8px;
    font-size: 14px;
    transition: var(--transition-smooth);
    background: #fafafa;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 4px rgba(204, 0, 0, 0.05);
}

.plan-options {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.plan-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    border: 1.5px solid #f0f0f0;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    background: white;
    gap: 8px;
}

.plan-card:hover {
    border-color: #ddd;
    transform: translateX(5px);
}

.plan-card input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 0;
}

.plan-label {
    flex: 1;
    font-weight: 500;
    font-size: 13px;
    color: var(--text-dark);
    line-height: 16px;
}

.plan-price-group {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    line-height: 1;
}

.plan-price {
    font-weight: 800 !important;
    font-size: 15px !important;
    line-height: 16px;
    margin-bottom: 2px !important;
}

.old-price {
    text-decoration: line-through !important;
    color: #888 !important;
    font-size: 11px !important;
    line-height: 1;
}

.plan-promo {
    font-weight: 700;
    font-size: 14px;
}

.plan-card:has(input:checked) {
    border-color: var(--primary-color);
    background: var(--primary-color) !important;
    box-shadow: 0 5px 15px rgba(204, 0, 0, 0.2);
}

.plan-card:has(input:checked) .plan-label,
.plan-card:has(input:checked) .plan-price,
.plan-card:has(input:checked) .old-price {
    color: white !important;
}

.plan-card:has(input:checked) .plan-label {
    font-weight: 700;
}

.btn-primary-large {
    width: 100%;
    margin-top: 10px;
    background: var(--primary-color);
    color: white;
    padding: 12px;
    font-size: 16px;
    font-weight: 700;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 6px 12px rgba(204, 0, 0, 0.2);
}

.btn-primary-large:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(204, 0, 0, 0.3);
}

@media (max-width: 992px) {
    .audience-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .order-main-container {
        flex-direction: column;
    }
}

/* Sticky Footer Bar */
.sticky-footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    background-color: var(--bg-white);
    padding: 10px 5%;
    display: flex;
    justify-content: center;
    gap: 20px;
    box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.1);
    z-index: 999;
}

.sticky-footer .btn {
    flex: 1;
    max-width: 300px;
    text-align: center;
    padding: 12px;
    border-radius: 10px;
    font-weight: 700;
    text-decoration: none;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .hero {
        flex-direction: column-reverse;
        padding-top: 100px;
    }

    .hero h1 {
        font-size: 38px;
    }

    .hero-content {
        padding-right: 0;
        margin-top: 40px;
        text-align: center;
    }

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

/* Floating Action Buttons Containers */
.floating-buttons-left {
    position: fixed;
    left: 20px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 9999;
}

.floating-buttons-right {
    position: fixed;
    right: 20px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 9999;
}

/* Mobile Header Buttons - Hidden on Desktop */
.mobile-header-buttons {
    display: none;
}

/* Left Buttons (Capsule style) */
.float-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
    transition: var(--transition-smooth);
    text-decoration: none;
    overflow: hidden;
    padding: 12px 25px;
    border-radius: 50px;
    min-width: 165px;
}

.cart-btn-long {
    background-color: var(--primary-color);
    color: white;
    animation: pulse-cart-new 2s infinite;
}

.consult-btn-long {
    background-color: #004A99;
    color: white;
    animation: pulse-blue-new 2s infinite;
}

.btn-icon {
    display: none;
}

.btn-text {
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.float-btn:hover {
    transform: translateX(10px) scale(1.05);
}

/* Right Buttons (Circle style) */
.float-btn-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    transition: var(--transition-smooth);
    text-decoration: none;
    overflow: hidden;
}

.zalo-btn-right {
    background-color: white;
    border: 2px solid #0068ff;
    animation: pulse-zalo-simple 2s infinite;
}

.zalo-btn-right img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.phone-btn-right {
    background-color: #00cc00;
    animation: pulse-phone-simple 2s infinite;
}

.phone-icon {
    width: 30px;
    height: 30px;
}

.float-btn-circle:hover {
    transform: scale(1.1);
}

/* Animations */
@keyframes pulse-cart-new {
    0% {
        box-shadow: 0 0 0 0 rgba(204, 0, 0, 0.4);
    }

    70% {
        box-shadow: 0 0 0 12px rgba(204, 0, 0, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(204, 0, 0, 0);
    }
}

@keyframes pulse-blue-new {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 74, 153, 0.4);
    }

    70% {
        box-shadow: 0 0 0 12px rgba(0, 74, 153, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(0, 74, 153, 0);
    }
}

@keyframes pulse-zalo-simple {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 104, 255, 0.4);
    }

    70% {
        box-shadow: 0 0 0 12px rgba(0, 104, 255, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(0, 104, 255, 0);
    }
}

@keyframes pulse-phone-simple {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 204, 0, 0.4);
    }

    70% {
        box-shadow: 0 0 0 12px rgba(0, 204, 0, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(0, 204, 0, 0);
    }
}

/* ========================================
   MOBILE RESPONSIVE OPTIMIZATIONS
   ======================================== */

/* Hamburger Menu Button */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 10001;
}

.mobile-menu-toggle span {
    width: 30px;
    height: 3px;
    background: white;
    border-radius: 10px;
    transition: all 0.3s linear;
    position: relative;
    transform-origin: 1px;
}

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

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(20px);
}

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

/* Mobile Navigation Overlay */
@media (max-width: 768px) {
    /* Responsive Typography Variables */
    :root {
        --font-section-title: 26px;
        --font-subtitle: 22px;
        --font-strong: 20px;
        --font-text: 18px;
    }

    /* Show hamburger menu */
    .mobile-menu-toggle {
        display: none !important;
    }

    /* Header adjustments */
    header {
        padding: 12px 5%;
    }

    .logo span {
        font-size: 20px !important;
    }

    /* Hide nav on mobile */
    nav {
        display: none;
    }

    /* Header becomes 2-row on mobile */
    header {
        flex-wrap: wrap;
        padding: 12px 5% 0;
        gap: 0;
    }

    /* Row 1: logo + nav links */
    .logo {
        flex: 0 0 auto;
    }

    /* Mobile nav links — shown top-right, white bold, no border */
    .mobile-header-nav {
        display: flex;
        gap: 18px;
        align-items: center;
        flex: 1;
        justify-content: flex-end;
    }

    .mobile-header-nav a {
        color: #ffffff;
        text-decoration: none;
        font-size: 14px;
        font-weight: 700;
        transition: color 0.3s ease;
        white-space: nowrap;
    }

    .mobile-header-nav a:hover,
    .mobile-header-nav a:active {
        color: var(--accent-color);
    }

    /* Row 2: CTA buttons spanning full width */
    .mobile-header-buttons {
        display: flex;
        justify-content: center;
        gap: 10px;
        padding: 10px 0 12px;
        width: 100%;
        background: transparent;
    }

    .mobile-header-btn {
        padding: 10px 20px;
        border-radius: 30px;
        text-decoration: none;
        font-weight: 600;
        font-size: 14px;
        text-align: center;
        transition: all 0.3s ease;
        min-width: 140px;
        white-space: nowrap;
        display: block;
    }

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

    .mobile-header-btn.consult-btn {
        background-color: #004A99;
        color: white;
    }

    /* Mobile nav links inside header — shown on right, no border */
    .mobile-header-nav {
        display: flex;
        gap: 16px;
        align-items: center;
    }

    .mobile-header-nav a {
        color: #ffffff;
        text-decoration: none;
        font-size: 14px;
        font-weight: 700;
        transition: color 0.3s ease;
        border: none;
        background: none;
        padding: 0;
        white-space: nowrap;
    }

    .mobile-header-nav a:hover,
    .mobile-header-nav a:active {
        color: var(--accent-color);
    }

    nav ul {
        flex-direction: column;
        gap: 0;
        padding: 20px;
    }

    nav li {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    nav a {
        display: block;
        padding: 18px 15px;
        font-size: 16px;
        text-align: left;
    }

    nav a.btn-primary {
        margin-top: 15px;
        text-align: center;
        border-radius: 50px;
        padding: 15px 25px !important;
    }

    /* Mobile overlay backdrop */
    .mobile-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 9999;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .mobile-overlay.active {
        display: block;
        opacity: 1;
    }

    /* Sections Mobile */
    section#order {
        padding: 30px 5%;
    }

    /* Hero Section Mobile */
    .hero-product {
        padding: 40px 5% 30px;
        min-height: auto;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        display: flex;
        flex-direction: column-reverse;
    }

    .hero-title {
        font-size: 28px !important;
        line-height: 1.2;
        text-align: center;
    }

    .hero-subtitle {
        font-size: 18px !important;
        text-align: center;
        margin-bottom: 20px;
    }

    .hero-feature-list {
        margin-top: 20px;
        margin-bottom: 25px;
    }

    .hero-feature-item {
        padding: 12px;
        align-items: flex-start;
    }

   .feature-icon-wrapper {
    margin-right: 15px;
    margin-top: 0; /* bỏ lệch dọc */
}

    .feature-text strong {
        font-size: 20px;
    }

    .feature-text span {
        font-size: 18px;
    }

    .hero-cta {
        flex-direction: column !important;
        gap: 12px !important;
    }

    .hero-cta a {
        width: 100% !important;
        min-width: auto !important;
        padding: 14px 25px !important;
        font-size: 16px !important;
    }

    /* Hero Image Product */
    .hero-image-product.cluster-layout {
        max-width: 280px;
        margin: 0 auto;
    }

    /* Section Titles Mobile */
    .section-title h2 {
        line-height: 1.3;
    }

    section {
        padding: 50px 5%;
    }

    /* Audience Section */
    .audience-grid {
        display: flex;
        flex-direction: column;
        gap: 30px;
    }

    .audience-image {
        order: -1;
        text-align: center;
    }

    .audience-image .image-wrapper {
        max-width: 400px;
        margin: 0 auto;
    }

    .audience-image .image-wrapper img {
        width: 100%;
        max-width: 100%;
        height: auto;
    }

    .audience-list-wrapper {
        padding: 25px 20px;
    }

    /* Ingredients Section */
    #ingredients > div > div {
        flex-direction: column !important;
        gap: 30px !important;
    }

    #ingredients .ingredient-list {
        padding-right: 0 !important;
    }

    #ingredients .hero-image-product {
        max-width: 400px !important;
        margin: 0 auto;
    }

    /* Consultation Banner */
    .consultation-banner {
        padding: 40px 5% !important;
    }

    .consultation-banner form {
        flex-direction: column !important;
    }

    .consultation-banner input[type="tel"] {
        width: 100% !important;
        max-width: 100% !important;
        min-width: auto !important;
    }

    .consultation-banner button {
        width: 100%;
        padding: 15px 30px !important;
    }

    /* Science/Legal Section */
    .scientific-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .science-card {
        padding: 30px 25px !important;
    }

    .science-card ul {
        font-size: 14px !important;
    }

    /* Press Section */
    .press-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .press-item {
        flex-direction: row;
        align-items: stretch;
    }

    .press-item img {
        width: 120px;
        min-width: 120px;
        height: auto;
        object-fit: cover;
        border-bottom: none;
        border-right: 3px solid var(--primary-color);
    }

    .press-info {
        padding: 12px 15px;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
    }

    .press-info h4 {
        font-size: 13px;
        font-weight: 700;
        margin-bottom: 6px;
        line-height: 1.2;
    }

    .press-info p {
        font-size: 13px;
        line-height: 1.4;
        color: var(--text-dark);
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    /* Experts Section */
    #experts > div > div {
        flex-direction: column;
        gap: 20px !important;
    }

    #experts > div > div > div {
        max-width: 100% !important;
        padding: 30px 25px !important;
    }

    /* Order Form */
    .order-form-wrapper {
        width: 100% !important;
        padding: 25px 20px !important;
    }

    .order-header {
        margin-bottom: 15px !important;
    }

    .order-header h2 {
        font-size: 24px !important;
    }

    .order-header p {
        font-size: 14px !important;
    }

    .form-group {
        margin-bottom: 14px !important;
    }

    .form-group label {
        font-size: 13px !important;
        margin-bottom: 6px !important;
    }

    .form-group input {
        padding: 11px 14px !important;
        font-size: 14px !important;
    }

    .plan-options {
        gap: 6px !important;
    }

    .plan-card {
        padding: 9px 12px !important;
        gap: 8px !important;
    }

    .plan-label {
        font-size: 13px !important;
        line-height: 1.3 !important;
    }

    .plan-price {
        font-size: 15px !important;
    }

    .old-price {
        font-size: 11px !important;
    }

    .btn-primary-large {
        padding: 13px !important;
        font-size: 16px !important;
        margin-top: 10px !important;
    }

    .btn-primary-large {
        font-size: 17px !important;
        padding: 16px !important;
    }

    /* Footer */
    footer {
        padding: 40px 5% 30px !important;
    }

    footer h2 {
        font-size: 20px !important;
    }

    footer h3 {
        font-size: 16px !important;
    }

    footer p,
    footer address p {
        font-size: 14px !important;
    }

    footer > div > div {
        flex-direction: column !important;
        gap: 20px !important;
    }

    /* Hide Floating Buttons on Mobile */
    .floating-buttons-left {
        display: none !important;
    }

    .floating-buttons-right {
        right: 10px;
        bottom: 20px;
        gap: 4px;
    }

    .float-btn {
        width: 80px;
        padding: 2px 4px;
        display: flex;
        align-items: center;
        justify-content: center;
        white-space: nowrap;
    }

    .btn-text {
        font-size: 16px;
    }

    .float-btn-circle {
        width: 50px;
        height: 50px;
    }

    .phone-icon {
        width: 24px;
        height: 24px;
    }

    .zalo-btn-right img {
        width: 50px;
        height: 50px;
    }

    /* Disable hover effects on mobile */
    .float-btn:hover {
        transform: none;
    }

    .float-btn-circle:hover {
        transform: none;
    }
}

/* Small Mobile Devices (320px - 480px) */
@media (max-width: 480px) {
    /* Responsive Typography Variables - Small Mobile */
    :root {
        --font-section-title: 22px;
        --font-subtitle: 20px;
        --font-strong: 18px;
        --font-text: 16px;
    }

    /* Extra small adjustments */
    section#order {
        padding: 25px 5% !important;
    }

    .hero-title {
        font-size: 24px !important;
    }

    .hero-feature-item {
        padding: 10px;
    }

    .feature-icon-wrapper {
        width: 22px;
        height: 22px;
        min-width: 22px;
        font-size: 12px;
        margin-right: 8px;
    }

    .feature-text strong {
        font-size: 18px;
    }

    .feature-text span {
        font-size: 16px;
    }

    /* Hide Floating Buttons on Small Mobile */
    .floating-buttons-left {
        display: none !important;
    }

    /* Mobile Header Buttons - Smaller on small screens */
    .mobile-header-btn {
        padding: 9px 18px;
        font-size: 13px;
        min-width: 130px;
    }

    .floating-buttons-right {
        bottom: 15px;
    }

    .float-btn {
        width: 100px;
        padding: 2px 4px;
        display: flex;
        align-items: center;
        justify-content: center;
        white-space: nowrap;
    }

    .btn-text {
        font-size: 16px;
    }

    .float-btn-circle {
        width: 45px;
        height: 45px;
    }

    .phone-icon {
        width: 20px;
        height: 20px;
    }

    /* Tighter spacing */
    section {
        padding: 40px 5%;
    }

    .container {
        padding: 0 10px;
    }

    /* Order form adjustments */
    .order-form-wrapper {
        width: 100% !important;
        padding: 20px 16px !important;
    }

    .order-header {
        margin-bottom: 12px !important;
    }

    .order-header h2 {
        font-size: 22px !important;
    }

    .form-group {
        margin-bottom: 12px !important;
    }

    .form-group label {
        font-size: 12px !important;
        margin-bottom: 5px !important;
    }

    .plan-options {
        gap: 5px !important;
    }

    .plan-card {
        padding: 8px 10px !important;
        gap: 6px !important;
    }

    .plan-label {
        font-size: 12px !important;
    }

    .plan-price {
        font-size: 14px !important;
    }

    .old-price {
        font-size: 10px !important;
    }

    .form-group input {
        padding: 10px 14px !important;
        font-size: 14px !important;
    }

    .btn-primary-large {
        padding: 12px !important;
        font-size: 15px !important;
    }

    /* Audience & Ingredients Images - smaller on very small screens */
    .audience-image .image-wrapper {
        max-width: 320px;
    }

    #ingredients .hero-image-product {
        max-width: 320px !important;
    }
}

/* Tablet Landscape (769px - 992px) */
@media (min-width: 769px) and (max-width: 992px) {
    .hero-title {
        font-size: 36px !important;
    }

    .section-title h2 {
        font-size: 32px !important;
    }

    nav ul {
        gap: 20px;
    }

    nav a {
        font-size: 15px;
    }

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

    .hero-image-product.cluster-layout {
        max-width: 360px;
    }
}

/* Certification Slider */
.cert-slider {
    width: 100%;
    margin-top: auto;
}

.science-card h3 {
    flex-shrink: 0;
}

.science-card ul {
    flex-shrink: 0;
    min-height: 120px;
}

.slider-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    min-height: 375px;
}

.slider-wrapper {
    position: relative;
    width: 100%;
    padding-top: 75%;
    background-color: #f5f5f5;
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.slider-wrapper:active {
    cursor: grabbing;
}

.slider-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    pointer-events: none;
}

.slider-image.active {
    opacity: 1;
    pointer-events: auto;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(135deg, rgba(204, 0, 0, 0.95), rgba(170, 0, 0, 0.95));
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.4);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 24px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    box-shadow: 0 4px 12px rgba(204, 0, 0, 0.35),
                0 2px 4px rgba(0, 0, 0, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
}

.slider-btn:hover {
    background: linear-gradient(135deg, rgb(207, 59, 59), rgb(139, 82, 82));
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateY(-50%) scale(1.15);
    box-shadow: 0 6px 20px rgba(204, 0, 0, 0.5),
                0 3px 8px rgba(0, 0, 0, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.3),
                0 0 25px rgba(204, 0, 0, 0.3);
}

.slider-btn:active {
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 2px 8px rgba(204, 0, 0, 0.4),
                inset 0 1px 3px rgba(0, 0, 0, 0.3);
}

.slider-btn.prev {
    left: 15px;
    padding-right: 2px;
}

.slider-btn.next {
    right: 15px;
    padding-left: 2px;
}

.slider-dots {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: 2px solid rgba(204, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.slider-dot.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    border-color: rgba(255, 255, 255, 0.6);
    transform: scale(1.3);
    box-shadow: 0 3px 8px rgba(204, 0, 0, 0.4),
                0 0 12px rgba(204, 0, 0, 0.3);
}

.slider-dot:hover {
    background: rgba(255, 255, 255, 0.7);
    border-color: var(--primary-color);
    transform: scale(1.15);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.25);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .science-card {
        min-height: auto !important;
    }

    .science-card ul {
        min-height: auto !important;
    }

    .slider-container {
        max-width: 100%;
        min-height: auto;
    }

    .slider-btn {
        width: 38px;
        height: 38px;
        font-size: 20px;
        border-width: 1.5px;
    }

    .slider-btn.prev {
        left: 8px;
    }

    .slider-btn.next {
        right: 8px;
    }

    .slider-dot {
        width: 9px;
        height: 9px;
        border-width: 1.5px;
    }
}

/* Certification Lightbox */
.cert-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.cert-lightbox.active {
    opacity: 1;
}

.lightbox-content {
    position: relative;
    width: 90%;
    max-width: 1200px;
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: absolute;
    top: -10px;
    right: 0;
    background: linear-gradient(135deg, rgba(204, 0, 0, 0.8), rgba(170, 0, 0, 0.8));
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: white;
    font-size: 32px;
    font-weight: 400;
    cursor: pointer;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    line-height: 1;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(204, 0, 0, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.lightbox-close:hover {
    background: linear-gradient(135deg, rgba(204, 0, 0, 1), rgba(170, 0, 0, 1));
    border-color: rgba(255, 255, 255, 0.6);
    transform: scale(1.15) rotate(90deg);
    box-shadow: 0 6px 20px rgba(204, 0, 0, 0.6),
                0 0 25px rgba(204, 0, 0, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.lightbox-close:active {
    transform: scale(1.05) rotate(90deg);
}

.lightbox-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.08));
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    width: 65px;
    height: 65px;
    border-radius: 50%;
    font-size: 32px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    backdrop-filter: blur(15px) saturate(180%);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3),
                0 2px 8px rgba(0, 0, 0, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.lightbox-btn:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0.15));
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-50%) scale(1.12);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4),
                0 4px 12px rgba(0, 0, 0, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.3),
                0 0 30px rgba(255, 255, 255, 0.2);
}

.lightbox-btn:active {
    transform: translateY(-50%) scale(1.02);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3),
                inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

.lightbox-btn.prev {
    left: 30px;
    padding-right: 3px;
}

.lightbox-btn.next {
    right: 30px;
    padding-left: 3px;
}

.lightbox-counter {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 18px;
    font-weight: 500;
    background: rgba(0, 0, 0, 0.5);
    padding: 8px 20px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

/* Mobile responsive for lightbox */
@media (max-width: 768px) {
    .lightbox-content {
        width: 95%;
        height: 80vh;
    }

    .lightbox-close {
        top: -45px;
        font-size: 28px;
        width: 45px;
        height: 45px;
        border-width: 1.5px;
    }

    .lightbox-btn {
        width: 52px;
        height: 52px;
        font-size: 26px;
        border-width: 1.5px;
    }

    .lightbox-btn.prev {
        left: 12px;
    }

    .lightbox-btn.next {
        right: 12px;
    }

    .lightbox-counter {
        bottom: -40px;
        font-size: 16px;
        padding: 6px 16px;
    }
}
/* Article Viewer Modal */
.article-viewer-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.article-viewer-modal.active {
    opacity: 1;
}

.article-viewer-container {
    position: relative;
    width: 95%;
    max-width: 1400px;
    height: 90vh;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.article-viewer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border-bottom: 3px solid var(--secondary-color);
}

.article-viewer-header h3 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    flex: 1;
}

.article-viewer-close {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: white;
    font-size: 32px;
    font-weight: 400;
    cursor: pointer;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    line-height: 1;
    backdrop-filter: blur(10px);
    flex-shrink: 0;
    margin-left: 20px;
}

.article-viewer-close:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: white;
    transform: scale(1.1) rotate(90deg);
}

.article-viewer-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(204, 0, 0, 0.2);
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.article-viewer-loading p {
    color: var(--text-dark);
    font-size: 16px;
    font-weight: 500;
}

.article-viewer-iframe {
    flex: 1;
    width: 100%;
    height: 100%;
    border: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* Mobile responsive for article viewer */
@media (max-width: 768px) {
    .article-viewer-container {
        width: 100%;
        height: 100vh;
        border-radius: 0;
    }

    .article-viewer-header {
        padding: 15px 20px;
    }

    .article-viewer-header h3 {
        font-size: 16px;
    }

    .article-viewer-close {
        width: 40px;
        height: 40px;
        font-size: 28px;
        margin-left: 15px;
    }

    .spinner {
        width: 40px;
        height: 40px;
        border-width: 4px;
    }

    .article-viewer-loading p {
        font-size: 14px;
    }
}

/* Footer Styles */
footer {
    background: var(--bg-dark);
    color: white;
    padding: 60px 5% 40px;
    text-align: left;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-section {
    flex: 1;
    min-width: 280px;
}

.footer-section h2 {
    color: white;
    margin-bottom: 20px;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.footer-section h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: 600;
    margin-top: 20px;
}

.footer-section address {
    font-style: normal;
}

.footer-section p {
    margin-bottom: 12px;
    font-size: 15px;
    opacity: 0.9;
    line-height: 1.6;
}

.footer-section p strong {
    opacity: 1;
    font-weight: 600;
    margin-right: 5px;
}

.footer-section a {
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.footer-website-link {
    display: inline-block;
    margin-bottom: 20px;
    opacity: 0.8;
    font-size: 15px;
}

.footer-website-link:hover {
    opacity: 1;
}

.footer-notice {
    font-size: 14px;
    opacity: 0.75;
    line-height: 1.8;
}

.footer-norway {
    color: var(--primary-color);
    font-weight: bold;
    font-size: 20px;
}

.footer-divider {
    max-width: 1400px;
    margin: 40px auto 25px;
    border: none;
    border-top: 1px solid rgba(255,255,255,0.15);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    font-size: 14px;
    opacity: 0.7;
    margin: 0;
}

.footer-copyright {
    opacity: 0.5;
}

/* Footer Mobile */
@media (max-width: 768px) {
    footer {
        padding: 40px 5% 30px;
    }

    .footer-content {
        gap: 35px;
    }

    .footer-section {
        min-width: 100%;
    }

    .footer-section h2 {
        font-size: 20px;
    }

    .footer-section h3 {
        font-size: 17px;
    }

    .footer-section p {
        font-size: 14px;
    }

    .footer-norway {
        font-size: 18px;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .footer-bottom p {
        font-size: 13px;
    }
}
    .slider-container {
    position: relative;
    max-width: 100%;
    height: 420px; /* tăng chiều cao */
    margin: 0 auto;
    overflow: hidden;
    border-radius: 5px;
    background: #f9f9f9;
}

    .slider-wrapper {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

    .slider-image {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
    display: none;
}

    .slider-image.active {
        display: block;
}

    .slider-image {
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border-radius: 10px;
}

.slider-image {
    transition: transform 0.3s ease;
}

.slider-image:hover {
    transform: scale(1.03);
}

.slider-btn {
  background: transparent !important;
  border: none;
  box-shadow: none;
}

.slider-btn:hover,
.slider-btn:active,
.slider-btn:focus {
  background: transparent !important;
  box-shadow: none !important;
  outline: none;
}

/* Nếu có pseudo element gây nền */
.slider-btn::before,
.slider-btn::after {
  display: none !important;
}

button {
  background: transparent;
  -webkit-tap-highlight-color: transparent; /* mobile */
}
.cert-slider .slider-wrapper {
  margin-top: 16px;
}

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

.feature-text {
  text-align: left;
}

.feature-text strong {
  display: block;
  margin-bottom: 4px;
}

.feature-text span {
  display: block;
  line-height: 1.5;
}
.feature-text {
  display: flex;
  flex-direction: column;
}