/* --- Reset & Basic Styles (Copied & Adjusted) --- */
:root {
    --primary-color: #005fbe;    /* Ngọc Cường Blue */
    --secondary-color: #f39c12; /* Ngọc Cường Orange */
    --accent-color: #ffe082;     /* Light Yellow/Gold accent */
    --success-color: #28a745;    /* Green for success/check */
    --danger-color: #dc3545;     /* Red for warnings/times */
    --text-light: #ffffff;
    --text-dark: #212529;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --light-gray: #f8f9fa;
    --body-font: 'Open Sans', sans-serif;
    --heading-font: 'Open Sans', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--body-font); line-height: 1.7; color: var(--text-dark); background-color: #fff; font-size: 15px; }
.container { width: 90%; max-width: 1140px; margin: 0 auto; padding: 0 15px; }
h1, h2, h3, h4 { font-family: var(--heading-font); font-weight: 700; margin-bottom: 1.2rem; line-height: 1.4; color: var(--primary-color); }
h1 { font-size: 2.6rem; }
h2 { font-size: 2.1rem; text-align: center; margin-bottom: 3rem; padding-bottom: 0.5rem; position: relative; }
h2::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 80px; height: 4px; background-color: var(--secondary-color); border-radius: 2px; }
h3 { font-size: 1.5rem; margin-bottom: 1.5rem; color: var(--primary-color); display: flex; align-items: center; border-bottom: 2px solid var(--border-color); padding-bottom: 0.8rem;}
h3 i { margin-right: 12px; font-size: 1.3em; width: 30px; text-align: center; /* Align icons */ }
h4 { font-size: 1.15rem; margin-bottom: 0.8rem; color: var(--text-dark); font-weight: 600; }
p { margin-bottom: 1rem; color: var(--text-muted); }
a { color: var(--primary-color); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--secondary-color); }
ul, ol { list-style: none; padding: 0; margin: 0; }
img { max-width: 100%; height: auto; display: block; }
section { padding: 60px 0; border-bottom: 1px solid var(--border-color); }
section:last-of-type { border-bottom: none; }
.text-light { color: var(--text-light) !important; }
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-0 { margin-bottom: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0; }

/* --- Button Styles (Copied) --- */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 30px; font-size: 1rem; font-weight: 700; text-align: center; border-radius: 30px; cursor: pointer; transition: all 0.3s ease; border: none; text-transform: uppercase; letter-spacing: 0.5px; line-height: 1.5; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.btn i { margin-right: 8px; }
.btn-sm { padding: 8px 18px; font-size: 0.9rem; }
.btn-lg { padding: 15px 40px; font-size: 1.1rem; }
.btn-primary { background-color: var(--primary-color); color: var(--text-light); }
.btn-primary:hover { background-color: #004a9a; color: var(--text-light); transform: translateY(-2px); box-shadow: 0 6px 12px rgba(0, 95, 190, 0.3); }
.btn-secondary { background-color: var(--secondary-color); color: var(--text-light); }
.btn-secondary:hover { background-color: #d35400; color: var(--text-light); transform: translateY(-2px); box-shadow: 0 6px 12px rgba(243, 156, 18, 0.3); }
.btn-outline-primary { background-color: transparent; color: var(--primary-color); border: 2px solid var(--primary-color); }
.btn-outline-primary:hover { background-color: var(--primary-color); color: #fff; }
.btn-outline-light { background-color: transparent; color: var(--text-light); border: 2px solid var(--text-light); }
.btn-outline-light:hover { background-color: var(--text-light); color: var(--primary-color); }

/* --- Header Styles (Copied) --- */
.site-header { background-color: #fff; padding: 10px 0; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 5px rgba(0,0,0,0.1); transition: box-shadow 0.3s ease; }
.site-header.scrolled { box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.header-container { display: flex; justify-content: space-between; align-items: center; position: relative; }
.header-logo a { display: flex; align-items: center; color: var(--primary-color); font-weight: 700; font-size: 1.3rem; text-decoration: none; }
.header-logo img { height: 45px; margin-right: 10px; width: auto; }
.main-nav { display: flex; }
.main-nav ul { display: flex; list-style: none; margin: 0; padding: 0; }
.main-nav li { margin-left: 10px; }
.main-nav a { color: var(--text-dark); font-weight: 600; padding: 10px 12px; border-radius: 5px; font-size: 0.9rem; white-space: nowrap; transition: color 0.3s ease, background-color 0.3s ease; display: flex; align-items: center; }
.main-nav a i { margin-right: 6px; font-size: 1em; color: var(--primary-color); transition: color 0.3s ease; }
.main-nav a:hover { color: var(--primary-color); background-color: rgba(0, 95, 190, 0.08); }
.main-nav a:hover i { color: var(--secondary-color); }
.main-nav a.active { color: #fff !important; background-color: var(--primary-color); }
.main-nav a.active i { color: #fff !important; }
.menu-toggle { display: none; background: none; border: none; font-size: 1.8rem; color: var(--primary-color); cursor: pointer; padding: 5px; z-index: 1001; }


/* --- Hero Section (Returns Page) --- */
.hero-returns-section { background-size: cover; background-position: center center; position: relative; padding: 80px 0; color: var(--text-light); }
.hero-returns-section .overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(rgba(0, 95, 190, 0.8), rgba(0, 40, 80, 0.9)); z-index: 1; }
.hero-returns-content { position: relative; z-index: 2; }
.hero-returns-image { max-width: 200px; /* Slightly smaller */ margin: 0 auto 25px auto; animation: pulse 3s infinite ease-in-out; }
.returns-title { font-size: 2.8rem; /* Adjusted size */ font-weight: 700; margin-bottom: 1rem; color: #fff; text-shadow: 1px 1px 3px rgba(0,0,0,0.3); }
.returns-subtitle { font-size: 1.4rem; color: #e0f2ff; margin-bottom: 35px; max-width: 700px; margin-left: auto; margin-right: auto; font-weight: 600; }
.hero-returns-sub-images { display: flex; justify-content: center; gap: 20px; align-items: center; margin-top: 25px; filter: brightness(1.1); /* Make images slightly brighter */ }
.hero-returns-sub-images img { max-height: 65px; width: auto; opacity: 0.95; mix-blend-mode: lighten; /* Blend mode for effect */ }

/* --- Policy Highlights Bar (Copied & Adjusted) --- */
.policy-highlights-bar { background-color: var(--primary-color); color: var(--text-light); padding: 18px 0; /* Slightly more padding */ border-bottom: 4px solid var(--secondary-color); }
.highlight-items-wrapper { display: flex; justify-content: space-around; align-items: stretch; flex-wrap: wrap; gap: 15px; }
.highlight-item { display: flex; align-items: center; text-align: left; padding: 10px; position: relative; flex: 1; min-width: 210px; justify-content: center; border-right: 1px solid rgba(255, 255, 255, 0.15); } /* Add separator */
.highlight-item:last-child { border-right: none; }
.highlight-icon { font-size: 2.4rem; margin-right: 15px; flex-shrink: 0; color: var(--accent-color); width: 45px; text-align: center; }
.highlight-text { font-size: 0.95rem; line-height: 1.4; font-weight: 600; }
.highlight-text strong { display: block; font-size: 1.15rem; font-weight: 700; margin-top: 3px; }
.highlight-link-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; }

/* --- Returns Policy Section --- */
.returns-policy-section { background-color: #fff; padding: 80px 0; /* More padding */ }
.returns-policy-section .section-title { margin-bottom: 50px; }
.policy-content-wrapper { max-width: 950px; margin: 0 auto; }
.policy-block { background-color: #fff; padding: 35px; border-radius: 8px; margin-bottom: 35px; border: 1px solid var(--border-color); box-shadow: 0 5px 15px rgba(0,0,0,0.05); position: relative; /* For border effect */ border-left: 7px solid var(--primary-color); }
.policy-block h3 { border-bottom: none; padding-bottom: 0; margin-bottom: 1.5rem; }
.policy-block h3 i { font-size: 1.6rem; }
.policy-core h3 { border-left-color: var(--secondary-color); /* Orange */ color: var(--secondary-color); }
.policy-core h3 i { color: var(--secondary-color); }
.policy-exclusions h3 { border-left-color: var(--danger-color); color: var(--danger-color); }
.policy-exclusions h3 i { color: var(--danger-color); }
.policy-conditions h3 { border-left-color: var(--success-color); color: var(--success-color); }
.policy-conditions h3 i { color: var(--success-color); }
.policy-shipping-costs h3 { border-left-color: var(--primary-color); color: var(--primary-color); }
.policy-shipping-costs h3 i { color: var(--primary-color); }

.policy-core p { font-size: 1.05rem; /* Slightly larger */ line-height: 1.8; }
.policy-core .policy-image { max-width: 220px; margin: 25px auto 0 auto; }

.policy-exclusions ul, .policy-conditions ul { padding-left: 10px; margin-top: 1rem; }
.policy-exclusions li, .policy-conditions li { display: flex; align-items: flex-start; margin-bottom: 1rem; /* More space */ color: var(--text-muted); font-size: 1rem; }
.policy-exclusions li i, .policy-conditions li i { margin-right: 12px; margin-top: 5px; width: 22px; text-align: center; flex-shrink: 0; font-size: 1.1rem; }
.policy-exclusions li i { color: var(--danger-color); }
.policy-conditions li i { color: var(--success-color); }
.policy-conditions li strong { color: var(--text-dark); } /* Highlight CPU note */

.policy-conditions .note { margin-top: 1.8rem; font-style: italic; font-size: 1rem; color: var(--primary-color); background-color: rgba(0, 95, 190, 0.05); padding: 10px 15px; border-radius: 4px; border-left: 3px solid var(--primary-color); }
.policy-conditions .note i { margin-right: 8px; }

.policy-shipping-costs ul { margin-top: 1rem; margin-bottom: 1.5rem; }
.policy-shipping-costs li i { color: var(--primary-color); }
.cost-details { margin-top: 1.5rem; padding: 20px; background-color: var(--light-gray); border: 1px solid var(--border-color); border-radius: 5px; }
.cost-details p { font-weight: 700; color: var(--text-dark); margin-bottom: 0.8rem; font-size: 1.05rem;}
.cost-details ul { margin-top: 0.8rem; padding-left: 0; }
.cost-details ul li { margin-bottom: 0.6rem; font-size: 1rem;}
.cost-details ul li strong { color: var(--primary-color); }
.cost-details ul li i { color: var(--primary-color); }
.policy-image-small { max-width: 130px; margin: 20px auto 0 auto; }

.returns-policy-section .cta-section { margin-top: 50px; }
.returns-policy-section .cta-title { color: var(--primary-color); font-size: 1.7rem;}

/* --- Footer Styles (Copied) --- */
.footer-section { background-color: #2a3035; color: #adb5bd; padding: 60px 0 25px 0; font-size: 0.95rem; border-top: 5px solid var(--primary-color); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 45px; margin-bottom: 45px; }
.footer-column h4 { color: #fff; margin-bottom: 1.8rem; font-size: 1.15rem; position: relative; padding-bottom: 1rem; text-transform: uppercase; letter-spacing: 1px; }
.footer-column h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 60px; height: 3px; background-color: var(--primary-color); border-radius: 1.5px; }
.footer-column h4 i { margin-right: 10px; width: 20px; text-align: center; }
.footer-column p, .footer-column li { margin-bottom: 1rem; color: #e0e0e0; line-height: 1.8; }
.footer-column a { color: #e0e0e0; }
.footer-column a:hover { color: #fff; text-decoration: underline; }
.footer-column strong { color: #f8f9fa; }
.footer-column ul li { padding-left: 0; }
.footer-column ul li a i { margin-right: 8px; font-size: 0.8rem; color: var(--primary-color); width: 15px; text-align: center; }
.social-icons-footer { margin-top: 1.2rem; }
.social-icons-footer a { color: #e0e0e0; font-size: 2rem; margin-right: 20px; transition: color 0.3s ease, transform 0.3s ease; display: inline-block; }
.social-icons-footer a:hover { color: var(--primary-color); transform: translateY(-3px); }
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid #495057; font-size: 0.9rem; color: #adb5bd; }
.footer-bottom a { color: #ced4da; font-weight: 600; }

/* --- Floating Action Buttons (Copied) --- */
.floating-cta { position: fixed; bottom: 25px; width: 60px; height: 60px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.9rem; box-shadow: 0 6px 18px rgba(0,0,0,0.3); z-index: 999; transition: transform 0.3s ease, background-color 0.3s ease; text-decoration: none; color: #fff; border: 2px solid rgba(255,255,255,0.5); }
.floating-cta:hover { transform: scale(1.1); }
.phone-cta { right: 25px; background-color: var(--secondary-color); }
.phone-cta:hover { background-color: #d35400; }
.zalo-cta { right: 100px; background-color: #0068ff; padding: 12px; }
.zalo-cta svg { width: 30px; height: 30px; fill: #fff; }
.zalo-cta:hover { background-color: #0053cc; }

/* --- Animations --- */
@keyframes pulse { 0%, 100% { opacity: 0.9; } 50% { opacity: 1; transform: scale(1.03);} }
.hero-returns-image { animation: pulse 3s infinite ease-in-out; }

/* --- Responsive --- */
@media (max-width: 992px) {
    h2 { font-size: 1.9rem; }
    .main-nav a { padding: 10px 8px; font-size: 0.85rem; }
    .main-nav li { margin-left: 5px; }
    .highlight-item { min-width: 180px; flex-basis: 45%; justify-content: flex-start; padding-left: 15px; padding-right: 15px; border-right: 1px solid rgba(255, 255, 255, 0.15); }
    .highlight-item:nth-child(2n) { border-right: none; } /* Remove border for every 2nd item in 2 columns */
    .highlight-item:last-child { border-right: none; }
}

@media (max-width: 768px) {
    body { padding-top: 0; font-size: 14px;}
    .site-header { position: relative; }
    /* Mobile Menu Styles */
    .main-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; width: auto; background-color: #fff; box-shadow: 0 5px 10px rgba(0,0,0,0.1); padding: 10px 0; border-top: 1px solid var(--border-color); z-index: 1100; }
    .main-nav.is-active { display: flex; }
    .main-nav ul { flex-direction: column; align-items: stretch; }
    .main-nav li { margin: 0; width: 100%; }
    .main-nav a { padding: 15px 20px; border-bottom: 1px solid #eee; justify-content: flex-start; border-radius: 0; font-size: 1rem; }
    .main-nav li:last-child a { border-bottom: none; }
    .menu-toggle { display: block; }

    section { padding: 40px 0; }
    h1 { font-size: 2rem; } h2 { font-size: 1.6rem; } h3 { font-size: 1.3rem; }
    .hero-returns-section { padding: 60px 0; }
    .returns-title { font-size: 2.2rem; }
    .returns-subtitle { font-size: 1.2rem; }
    .hero-returns-image { max-width: 150px; }
    .hero-returns-sub-images img { max-height: 50px;}

    .policy-block { padding: 25px; }
    .policy-exclusions ul, .policy-conditions ul { padding-left: 5px;}

    .highlight-items-wrapper { gap: 10px; }
    .highlight-item { flex-basis: 100%; min-width: unset; justify-content: center; padding: 10px 15px; border-right: none; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
    .highlight-item:last-child { border-bottom: none; }
    .highlight-icon { font-size: 1.8rem; margin-right: 12px; width: 35px;}
    .highlight-text { font-size: 0.85rem; }
    .highlight-text strong { font-size: 1rem; }

    .footer-grid { grid-template-columns: 1fr; }
    .floating-cta { width: 50px; height: 50px; font-size: 1.6rem; bottom: 20px; }
    .phone-cta { right: 20px; }
    .zalo-cta { right: 85px; padding: 8px;}
    .zalo-cta svg { width: 26px; height: 26px;}
}

@media (max-width: 480px) {
    .returns-title { font-size: 1.8rem; }
    .returns-subtitle { font-size: 1.1rem; }
    .hero-returns-sub-images { gap: 10px; }
    .hero-returns-sub-images img { max-height: 40px; }
    .policy-block { padding: 20px; }
    .policy-block h3 { font-size: 1.2rem; }
    .policy-exclusions li, .policy-conditions li { font-size: 0.9rem; }
    .cost-details ul li { font-size: 0.9rem; }
}