:root {
    /* Colors */
    --primary: #2563EB;
    --primary-hover: #1D4ED8;
    --secondary: #F97316;
    --secondary-hover: #EA580C;
    --dark: #0F172A;
    --darker: #020617;
    --light: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-400: #94A3B8;
    --gray-600: #475569;
    --gray-800: #1E293B;
    --white: #ffffff;
    
    /* Typography */
    --font-main: 'Inter', sans-serif;
    
    /* Spacing & Layout */
    --container: 1200px;
    --radius: 8px;
    --radius-lg: 16px;
    --transition: 0.3s ease;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--gray-800);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Utilities */
.section {
    padding: 5rem 0;
}

.bg-light { background-color: var(--gray-100); }
.bg-dark { background-color: var(--dark); color: var(--light); }
.text-white { color: var(--white); }

.center { text-align: center; }

.section-header {
    margin-bottom: 3rem;
}

.section-header p {
    color: var(--gray-600);
    font-size: 1.125rem;
    max-width: 600px;
    margin-top: 1rem;
}

.section-header.center p {
    margin-inline: auto;
}

.h2-main {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--dark);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.bg-dark .h2-main {
    color: var(--white);
}

.h2-main::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background-color: var(--primary);
    border-radius: 2px;
}

.section-header.center .h2-main::after {
    left: 50%;
    transform: translateX(-50%);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.5rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.39);
}

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

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

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

.btn-whatsapp {
    background-color: #25D366;
    color: var(--white);
    padding: 0.5rem 1rem;
}

.btn-whatsapp:hover {
    background-color: #128C7E;
}

/* Header */
.header {
    background-color: var(--white);
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.05em;
}

.logo strong {
    color: var(--primary);
}

.nav ul {
    display: flex;
    gap: 2rem;
}

.nav a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--gray-600);
}

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

.header-contact {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.tel-link {
    font-weight: 700;
    color: var(--dark);
    font-size: 1.1rem;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--dark);
}

/* Hero */
.hero {
    position: relative;
    padding: 8rem 0;
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 100%);
    overflow: hidden;
}

/* Hero background pattern simulation */
.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: radial-gradient(var(--gray-800) 1px, transparent 1px);
    background-size: 32px 32px;
    opacity: 0.4;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-text {
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--white);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-400);
    margin-bottom: 2.5rem;
    max-width: 650px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

/* EEAT Badge */
.eeat-badge {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255,255,255,0.05);
    padding: 0.75rem 1.25rem;
    border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.1);
    display: inline-flex;
    backdrop-filter: blur(10px);
}

.avatar {
    width: 40px;
    height: 40px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--white);
}

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

.eeat-name {
    color: var(--white);
    font-weight: 600;
    font-size: 0.95rem;
}

.eeat-title {
    color: var(--gray-400);
    font-size: 0.8rem;
}

/* Intro Section */
.intro-box {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.intro-box:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.check-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 0.75rem;
    color: var(--gray-600);
}

.check-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--primary);
    font-weight: bold;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th,
.data-table td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.data-table th {
    background-color: var(--gray-100);
    font-weight: 600;
    color: var(--dark);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tbody tr:hover {
    background-color: #f8fafc;
}

.badge {
    background-color: var(--primary);
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
}

.update-date {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background-color: #e0f2fe;
    color: #0284c7;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
}

/* Qualities */
.quality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.quality-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 2rem;
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.quality-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-5px);
}

.quality-card .h2-main::after {
    background-color: var(--secondary);
}

/* Formula Box */
.formula-box {
    background: #fffbeb;
    border: 1px solid #fde68a;
    color: #92400e;
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Local SEO Grid */
.local-seo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.local-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.local-card h3 {
    font-size: 1rem;
    color: var(--gray-600);
    font-weight: 600;
    text-transform: capitalize;
}

/* FAQ */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--gray-200);
}

.faq-question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 1.5rem 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
}

.faq-question .chevron {
    transition: transform 0.3s ease;
    color: var(--gray-400);
}

.faq-question[aria-expanded="true"] .chevron {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding-bottom: 1.5rem;
    color: var(--gray-600);
}

/* Massive H2 SEO Block */
.seo-tags-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 2rem;
    justify-content: center;
}

.seo-tag {
    font-size: 0.8rem;
    font-weight: 500;
    color: #94a3b8;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 0.4rem 0.8rem;
    border-radius: 50px;
    margin: 0;
    line-height: 1;
    transition: var(--transition);
}

.seo-tag:hover {
    color: var(--white);
    background: var(--primary);
    border-color: var(--primary);
}

/* Footer */
.footer {
    background-color: var(--darker);
    color: var(--gray-400);
    padding: 5rem 0 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer .logo {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    display: block;
}

.footer-h3 {
    color: var(--white);
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

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

.footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-contact a {
    color: var(--gray-400);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 992px) {
    .grid-2, .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 2.75rem;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--white);
        padding: 2rem;
        box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1);
        border-top: 1px solid var(--gray-200);
    }
    
    .nav.active {
        display: block;
    }
    
    .nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    .header-contact {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        padding: 5rem 0;
    }
    
    .hero h1 {
        font-size: 2.25rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
}

/* -----------------------------
   SEO ARTICLE STYLES
------------------------------ */
.seo-article {
    max-width: 900px;
    margin: 4rem auto;
    padding: 3rem;
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.seo-article h2 {
    font-size: 2rem;
    color: var(--dark);
    margin-top: 3.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--gray-100);
    text-transform: capitalize;
    line-height: 1.3;
}

.seo-article h2:first-child {
    margin-top: 0;
}

.seo-article h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    text-transform: capitalize;
}

.seo-article h4 {
    font-size: 1.25rem;
    color: var(--gray-800);
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.seo-article p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.seo-article strong {
    color: var(--dark);
    font-weight: 700;
}

.seo-article a {
    color: var(--primary);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    font-weight: 600;
    transition: var(--transition);
}

.seo-article a:hover {
    color: var(--primary-hover);
    text-decoration-thickness: 2px;
}

/* Beautiful Data Table */
.seo-article table {
    width: 100% !important;
    border-collapse: collapse !important;
    margin: 2.5rem 0 !important;
    border-radius: var(--radius) !important;
    overflow: hidden !important;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1) !important;
    border: none !important;
}

.seo-article th {
    background-color: var(--primary) !important;
    color: var(--white) !important;
    padding: 1.25rem 1rem !important;
    font-weight: 600 !important;
    text-align: left !important;
    border: none !important;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.seo-article td {
    padding: 1rem !important;
    border: none !important;
    border-bottom: 1px solid var(--gray-200) !important;
    color: var(--gray-800) !important;
    text-align: left !important;
}

.seo-article tr:last-child td {
    border-bottom: none !important;
}

.seo-article tr:hover td {
    background-color: #f8fafc !important;
}

/* Informational Section Boxes */
.seo-article section[style*="background"] {
    background-color: #eff6ff !important; /* light blue */
    border-left: 4px solid var(--primary) !important;
    padding: 2rem !important;
    border-radius: 0 var(--radius) var(--radius) 0 !important;
    margin: 3rem 0 !important;
}

.seo-article section[style*="background"] h2 {
    border-bottom: none;
    margin-top: 0;
    font-size: 1.5rem;
    color: var(--primary);
}

.seo-article section[style*="background"] p {
    margin-bottom: 0;
    color: var(--gray-800);
}

/* SSS inside Article */
#galvaniz-sac-sss {
    background: #f8fafc !important;
    padding: 3rem 2rem !important;
    border-radius: var(--radius-lg) !important;
    margin-top: 4rem !important;
    border: 1px solid var(--gray-200) !important;
}

#galvaniz-sac-sss h2 {
    border-bottom: none;
    margin-top: 0;
    margin-bottom: 2rem;
    text-align: center;
}

#galvaniz-sac-sss h3 {
    font-size: 1.15rem;
    color: var(--dark);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

#galvaniz-sac-sss h3:first-of-type {
    border-top: none;
    padding-top: 0;
}

#galvaniz-sac-sss p {
    font-size: 1rem;
    margin-bottom: 0;
}

/* Mobile optimizations for article */
@media (max-width: 768px) {
    .seo-article {
        padding: 1.5rem;
        margin: 2rem 1rem;
    }
    
    .seo-article h2 {
        font-size: 1.5rem;
    }
    
    .seo-article h3 {
        font-size: 1.25rem;
    }
    
    .seo-article table {
        display: block !important;
        overflow-x: auto !important;
        white-space: nowrap;
    }
}