/*
Theme Name: AISEO Industrial
Theme URI: https://aiseo.com
Author: AISEO Team
Author URI: https://aiseo.com
Description: AI-driven SEO optimized WordPress theme for industrial manufacturing B2B e-commerce. Features include bilingual support, product catalog, FAQ sections, and comprehensive SEO/AEO/GEO optimization.
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.4
Requires PHP: 8.0
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: aiseo-industrial
Domain Path: /languages

AISEO Industrial - Industrial Manufacturing WordPress Theme
*/

/* CSS Custom Properties - EXACT Match to Design */
:root {
    /* Primary - Black */
    --primary: #000000;
    --on-primary: #ffffff;
    --primary-container: #0f1c2c;
    --on-primary-container: #778598;
    --primary-fixed: #d6e4f9;
    --primary-fixed-dim: #bac8dc;
    --on-primary-fixed: #0f1c2c;
    --on-primary-fixed-variant: #3a4859;

    /* Secondary - Slate Blue */
    --secondary: #48626e;
    --on-secondary: #ffffff;
    --secondary-container: #cbe7f5;
    --on-secondary-container: #4e6874;
    --secondary-fixed: #cbe7f5;
    --secondary-fixed-dim: #afcbd8;
    --on-secondary-fixed: #021f29;
    --on-secondary-fixed-variant: #304a55;

    /* Tertiary - Orange/Coral */
    --tertiary: #000000;
    --on-tertiary: #ffffff;
    --tertiary-container: #ffdbd1;
    --on-tertiary-container: #ec4b18;
    --tertiary-fixed: #ffdbd1;
    --tertiary-fixed-dim: #ffb5a0;
    --on-tertiary-fixed: #3b0900;
    --on-tertiary-fixed-variant: #872100;

    /* Background & Surface - Light Blue Theme */
    --background: #f4faff;
    --on-background: #111d23;
    --surface: #f4faff;
    --surface-bright: #f4faff;
    --surface-dim: #cfdce4;
    --surface-container-lowest: #ffffff;
    --surface-container-low: #e9f6fd;
    --surface-container: #e3f0f8;
    --surface-container-high: #ddeaf2;
    --surface-container-highest: #d7e4ec;
    --on-surface: #111d23;
    --on-surface-variant: #44474c;

    /* Surface Tint */
    --surface-tint: #525f71;

    /* Inverse */
    --inverse-surface: #263238;
    --inverse-on-surface: #e6f3fb;
    --inverse-primary: #bac8dc;

    /* Outline */
    --outline: #74777d;
    --outline-variant: #c4c6cc;

    /* Error */
    --error: #ba1a1a;
    --on-error: #ffffff;
    --error-container: #ffdad6;
    --on-error-container: #93000a;

    /* Font Families */
    --font-headline: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-label: 'Inter', sans-serif;

    /* Border Radius */
    --radius-sm: 0.125rem;
    --radius-md: 0.25rem;
    --radius-lg: 0.5rem;
    --radius-full: 0.75rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.15);
    --shadow-2xl: 0 25px 50px rgba(0,0,0,0.25);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--on-background);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headline);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 { font-size: 3.75rem; font-weight: 900; }
h2 { font-size: 3rem; font-weight: 700; }
h3 { font-size: 1.875rem; font-weight: 700; }
h4 { font-size: 1.5rem; font-weight: 700; }
h5 { font-size: 1.25rem; font-weight: 700; }
h6 { font-size: 1rem; font-weight: 700; }

p { margin-bottom: 1rem; }

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

a:hover { color: var(--on-tertiary-container); }

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

/* Material Symbols */
.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
}

.fill-icon {
    font-variation-settings: 'FILL' 1, 'wght' 300, 'GRAD' 0, 'opsz' 24;
}

/* ============================================
   1. TOP NAVBAR
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 50;
    background-color: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(199, 220, 228, 0.5);
    box-shadow: var(--shadow-sm);
}

.dark .site-header {
    background-color: rgba(15, 23, 42, 0.8);
    border-bottom-color: rgba(30, 41, 59, 0.5);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    max-width: 1536px;
    margin: 0 auto;
}

.site-logo a {
    font-family: var(--font-headline);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    color: var(--on-background);
}

.main-nav {
    display: none;
}

@media (min-width: 768px) {
    .main-nav {
        display: flex;
        gap: 1.5rem;
    }
}

.main-nav a {
    font-family: var(--font-headline);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: #475569;
    padding-bottom: 0.25rem;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.dark .main-nav a {
    color: #94a3b8;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--on-tertiary-container);
    border-bottom-color: var(--on-tertiary-container);
}

.header-actions .btn-wholesale {
    font-family: var(--font-headline);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 0.5rem 1.5rem;
    background-color: var(--primary-container);
    color: var(--on-primary-container);
    border: none;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.header-actions .btn-wholesale:hover {
    opacity: 0.9;
}

/* ============================================
   2. HERO BANNER
   ============================================ */
.hero-section {
    position: relative;
    height: 870px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(20%) contrast(1.1);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(17, 29, 35, 0.9) 0%, rgba(17, 29, 35, 0.4) 50%, transparent 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 1536px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    color: white;
    line-height: 0.9;
    letter-spacing: -0.05em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    max-width: 800px;
}

.hero-title .accent {
    color: var(--on-tertiary-container);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--surface-container-high);
    max-width: 600px;
    border-left: 4px solid var(--on-tertiary-container);
    padding-left: 1.5rem;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-cta-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn-cta-primary {
    font-family: var(--font-headline);
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0.025em;
    padding: 1.25rem 2.5rem;
    background: linear-gradient(to right, #ec4b18, #ff6b3d);
    color: white;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-2xl);
    transition: transform var(--transition-fast);
}

.btn-cta-primary:hover {
    transform: scale(1.02);
}

.btn-cta-secondary {
    font-family: var(--font-headline);
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0.025em;
    padding: 1.25rem 2.5rem;
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.btn-cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ============================================
   3. TRUST BAR
   ============================================ */
.trust-bar {
    background-color: var(--surface-container-low);
    padding: 3rem 0;
}

.trust-bar-inner {
    max-width: 1536px;
    margin: 0 auto;
    padding: 0 2rem;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

@media (min-width: 768px) {
    .trust-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.trust-icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: white;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-fast);
}

.trust-item:hover .trust-icon {
    background-color: var(--on-tertiary-container);
}

.trust-icon .material-symbols-outlined {
    color: var(--on-tertiary-container);
    transition: color var(--transition-fast);
}

.trust-item:hover .trust-icon .material-symbols-outlined {
    color: white;
}

.trust-text {
    font-family: var(--font-headline);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.025em;
    text-transform: uppercase;
    color: var(--on-surface);
}

/* ============================================
   4. PRODUCT CATEGORIES (BENTO GRID)
   ============================================ */
.categories-section {
    padding: 6rem 2rem;
    background-color: var(--surface);
}

.categories-inner {
    max-width: 1536px;
    margin: 0 auto;
}

.categories-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 4rem;
}

.categories-label {
    font-family: var(--font-headline);
    font-size: 0.75rem;
    font-weight: 900;
    letter-spacing: 0.3em;
    color: var(--on-tertiary-container);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.categories-title {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--on-background);
}

.categories-link {
    font-family: var(--font-headline);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 2px solid rgba(0, 0, 0, 0.1);
    padding-bottom: 0.25rem;
    transition: border-color var(--transition-fast);
}

.categories-link:hover {
    border-bottom-color: var(--on-tertiary-container);
}

.bento-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    height: auto;
}

@media (min-width: 768px) {
    .bento-grid {
        grid-template-columns: repeat(12, 1fr);
        height: 600px;
    }
}

.bento-item {
    position: relative;
    overflow: hidden;
    background-color: var(--surface-container-low);
}

.bento-item.large {
    grid-column: span 1;
}

@media (min-width: 768px) {
    .bento-item.large {
        grid-column: span 8;
    }
}

.bento-item.small {
    grid-column: span 1;
}

@media (min-width: 768px) {
    .bento-item.small {
        grid-column: span 4;
    }
}

.bento-item.small-grid {
    display: grid;
    grid-template-rows: 1fr 1fr;
    gap: 1.5rem;
}

.bento-item.small-grid .bento-item {
    grid-column: span 1 !important;
}

.bento-image {
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
}

.bento-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.bento-item:hover .bento-image img {
    transform: scale(1.1);
}

.bento-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 50%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
}

.bento-item.large .bento-overlay {
    padding: 2.5rem;
}

.bento-name {
    font-family: var(--font-headline);
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.bento-item.large .bento-name {
    font-size: 2rem;
}

.bento-desc {
    color: rgba(255, 255, 255, 0.7);
    max-width: 400px;
    font-size: 0.875rem;
}

.bento-count {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* ============================================
   5. HOT SELLERS / FEATURED PRODUCTS
   ============================================ */
.products-section {
    padding: 6rem 2rem;
    background-color: var(--surface-container-low);
}

.products-inner {
    max-width: 1536px;
    margin: 0 auto;
}

.products-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--on-background);
    text-align: center;
    margin-bottom: 3rem;
}

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

@media (min-width: 640px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.product-card {
    background-color: var(--surface-container-lowest);
    transition: all var(--transition-base);
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
}

.product-image {
    height: 256px;
    overflow: hidden;
    position: relative;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: var(--on-tertiary-container);
    color: white;
    padding: 0.25rem 0.75rem;
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.product-content {
    padding: 1.5rem;
}

.product-category {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--on-secondary-container);
    margin-bottom: 0.5rem;
}

.product-name {
    font-family: var(--font-headline);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--on-background);
    text-transform: uppercase;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.btn-inquiry {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--primary-container);
    color: white;
    font-family: var(--font-headline);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.btn-inquiry:hover {
    background-color: var(--on-tertiary-container);
}

/* ============================================
   6. OEM / SUPPLY CHAIN SECTION
   ============================================ */
.oem-section {
    padding: 8rem 2rem;
    background-color: var(--on-background);
    color: white;
    overflow: hidden;
}

.oem-inner {
    max-width: 1536px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 6rem;
    align-items: center;
}

@media (min-width: 1024px) {
    .oem-inner {
        grid-template-columns: repeat(2, 1fr);
    }
}

.oem-image-wrapper {
    position: relative;
}

.oem-corner-tl {
    position: absolute;
    top: -2.5rem;
    left: -2.5rem;
    width: 10rem;
    height: 10rem;
    border-top: 4px solid var(--on-tertiary-container);
    border-left: 4px solid var(--on-tertiary-container);
}

.oem-image {
    width: 100%;
    height: 600px;
    object-fit: cover;
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-2xl);
}

.oem-badge {
    position: absolute;
    bottom: -2.5rem;
    right: -2.5rem;
    background-color: var(--on-tertiary-container);
    color: white;
    padding: 2rem 2.5rem;
    z-index: 20;
}

.oem-badge-value {
    font-size: 3rem;
    font-weight: 900;
    display: block;
    letter-spacing: -0.02em;
}

.oem-badge-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.8;
}

.oem-content {
    color: var(--surface-container-high);
}

.oem-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    line-height: 1;
}

.oem-text {
    font-size: 1.125rem;
    line-height: 1.7;
    max-width: 500px;
}

.oem-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.oem-stat-value {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--on-tertiary-container);
    display: block;
    margin-bottom: 0.25rem;
}

.oem-stat-label {
    font-size: 0.875rem;
    opacity: 0.7;
}

/* ============================================
   7. WORKFLOW PROTOCOL
   ============================================ */
.workflow-section {
    padding: 6rem 2rem;
    background-color: var(--surface);
}

.workflow-inner {
    max-width: 1536px;
    margin: 0 auto;
}

.workflow-header {
    text-align: center;
    margin-bottom: 5rem;
}

.workflow-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    color: var(--on-background);
    margin-bottom: 1rem;
}

.workflow-subtitle {
    color: var(--on-surface-variant);
    max-width: 600px;
    margin: 0 auto;
}

.workflow-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    position: relative;
}

@media (min-width: 768px) {
    .workflow-steps {
        grid-template-columns: repeat(5, 1fr);
    }
}

.workflow-line {
    position: absolute;
    top: 2rem;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--outline-variant);
    display: none;
}

@media (min-width: 768px) {
    .workflow-line {
        display: block;
    }
}

.workflow-step {
    padding-top: 3rem;
    text-align: center;
    position: relative;
}

.workflow-icon {
    width: 4rem;
    height: 4rem;
    background-color: var(--surface-container-lowest);
    border: 2px solid var(--outline-variant);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    position: relative;
    z-index: 10;
    transition: border-color var(--transition-fast);
}

.workflow-step:hover .workflow-icon {
    border-color: var(--on-tertiary-container);
}

.workflow-icon .material-symbols-outlined {
    color: var(--primary);
    transition: color var(--transition-fast);
}

.workflow-step:hover .workflow-icon .material-symbols-outlined {
    color: var(--on-tertiary-container);
}

.workflow-step-title {
    font-family: var(--font-headline);
    font-size: 1.125rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.workflow-step-desc {
    font-size: 0.75rem;
    color: var(--on-surface-variant);
}

/* ============================================
   8. TESTIMONIALS
   ============================================ */
.testimonials-section {
    padding: 6rem 2rem;
    background-color: var(--surface-container-high);
}

.testimonials-inner {
    max-width: 1536px;
    margin: 0 auto;
}

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

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    background-color: white;
    padding: 2.5rem;
    border-top: 8px solid var(--on-tertiary-container);
    box-shadow: var(--shadow-lg);
}

.testimonial-quote-icon {
    margin-bottom: 1.5rem;
}

.testimonial-quote-icon .material-symbols-outlined {
    font-size: 3rem;
    color: var(--on-tertiary-container);
}

.testimonial-quote {
    font-style: italic;
    color: var(--on-surface-variant);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid #f1f5f9;
}

.testimonial-avatar {
    width: 2.5rem;
    height: 2.5rem;
    background-color: #e2e8f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
}

.testimonial-name {
    font-family: var(--font-headline);
    font-size: 0.875rem;
    font-weight: 700;
}

.testimonial-company {
    font-size: 0.625rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--on-surface-variant);
}

/* ============================================
   9. FAQ SECTION
   ============================================ */
.faq-section {
    padding: 6rem 2rem;
    background-color: var(--surface);
}

.faq-inner {
    max-width: 896px;
    margin: 0 auto;
}

.faq-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    color: var(--on-background);
    text-align: center;
    margin-bottom: 3rem;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background-color: var(--surface-container-low);
    padding: 1.5rem;
    border-radius: var(--radius-sm);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    padding: 0;
}

.faq-question h4 {
    font-family: var(--font-headline);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    color: var(--on-background);
}

.faq-item .material-symbols-outlined {
    color: var(--on-surface-variant);
    transition: transform var(--transition-fast);
}

.faq-item.active .material-symbols-outlined {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base), padding var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-top: 1rem;
}

.faq-answer p {
    font-size: 0.875rem;
    color: var(--on-surface-variant);
    line-height: 1.7;
    margin: 0;
}

/* ============================================
   10. LEAD GENERATION FORM
   ============================================ */
.lead-section {
    padding: 8rem 2rem;
    background-color: var(--secondary-container);
}

.lead-inner {
    max-width: 1536px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 5rem;
}

@media (min-width: 1024px) {
    .lead-inner {
        grid-template-columns: repeat(2, 1fr);
    }
}

.lead-label {
    font-family: var(--font-headline);
    font-size: 0.75rem;
    font-weight: 900;
    letter-spacing: 0.3em;
    color: var(--on-tertiary-container);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.lead-title {
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 900;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    color: var(--on-background);
    margin-bottom: 2rem;
    line-height: 1;
}

.lead-subtitle {
    font-size: 1.25rem;
    color: var(--on-secondary-container);
    max-width: 500px;
    margin-bottom: 3rem;
}

.lead-trust {
    display: flex;
    gap: 2rem;
    align-items: center;
    padding-top: 3rem;
    border-top: 1px solid rgba(78, 104, 116, 0.2);
}

.lead-avatars {
    display: flex;
    margin-left: -1rem;
}

.lead-avatar {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    border: 4px solid var(--secondary-container);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
    margin-left: -1rem;
}

.lead-avatar:first-child {
    margin-left: 0;
}

.lead-avatar.visa { background-color: var(--surface-container-highest); }
.lead-avatar.mastercard { background-color: var(--on-background); color: white; }
.lead-avatar.apple { background-color: var(--on-tertiary-container); color: white; }

.lead-trust-text {
    font-family: var(--font-headline);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--on-background);
}

.lead-form-container {
    background-color: white;
    padding: 3rem;
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
}

.lead-form-corner {
    position: absolute;
    top: 0;
    right: 0;
    width: 8rem;
    height: 8rem;
    background-color: rgba(236, 75, 24, 0.05);
    transform: rotate(45deg) translate(4rem, -4rem);
}

.lead-form {
    position: relative;
    z-index: 10;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

.form-label {
    display: block;
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--on-surface-variant);
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
    width: 100%;
    background-color: var(--surface-container-low);
    border: none;
    border-bottom: 2px solid var(--primary-fixed);
    padding: 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--on-background);
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-bottom-color: var(--on-tertiary-container);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--on-surface-variant);
    opacity: 0.6;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    width: 100%;
    padding: 1.25rem;
    background-color: var(--on-background);
    color: white;
    font-family: var(--font-headline);
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.btn-submit:hover {
    background-color: var(--on-tertiary-container);
}

/* ============================================
   11. FOOTER
   ============================================ */
.site-footer {
    background-color: #f1f5f9;
    color: #0f172a;
    font-size: 0.875rem;
    line-height: 1.6;
}

@media (prefers-color-scheme: dark) {
    .site-footer {
        background-color: #020617;
        color: #f1f5f9;
    }
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    padding: 4rem 3rem;
    max-width: 1536px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .footer-main {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    font-family: var(--font-headline);
    font-size: 1.25rem;
    font-weight: 900;
    text-transform: uppercase;
    margin-bottom: 1rem;
    display: block;
}

.footer-desc {
    color: #64748b;
    margin-bottom: 1.5rem;
}

@media (prefers-color-scheme: dark) {
    .footer-desc {
        color: #94a3b8;
    }
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social .material-symbols-outlined {
    color: #94a3b8;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.footer-social .material-symbols-outlined:hover {
    color: #f97316;
}

.footer-resources h4,
.footer-contact h4 {
    font-family: var(--font-headline);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.footer-links a {
    color: #64748b;
    text-decoration: underline;
    text-underline-offset: 4px;
    transition: color var(--transition-fast);
}

@media (prefers-color-scheme: dark) {
    .footer-links a {
        color: #94a3b8;
    }
}

.footer-links a:hover {
    color: #f97316;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: #64748b;
}

@media (prefers-color-scheme: dark) {
    .footer-contact-item {
        color: #94a3b8;
    }
}

.footer-contact-item .material-symbols-outlined {
    font-size: 1rem;
}

.footer-bottom {
    border-top: 1px solid #e2e8f0;
    padding: 2rem 3rem;
    max-width: 1536px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

@media (prefers-color-scheme: dark) {
    .footer-bottom {
        border-top-color: #1e293b;
    }
}

.footer-copyright {
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: #64748b;
}

@media (prefers-color-scheme: dark) {
    .footer-copyright {
        color: #94a3b8;
    }
}

.footer-payments {
    display: flex;
    gap: 1rem;
    opacity-30: 0.3;
    filter: grayscale(100%);
}

.footer-payments .material-symbols-outlined {
    font-size: 1.5rem;
    color: #64748b;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    width: 100%;
    max-width: 1536px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.uppercase { text-transform: uppercase; }
.font-headline { font-family: var(--font-headline); }
.font-body { font-family: var(--font-body); }

.tracking-tight { letter-spacing: -0.02em; }
.tracking-widest { letter-spacing: 0.1em; }
.tracking-wider { letter-spacing: 0.05em; }

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    background-color: var(--on-tertiary-container);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    box-shadow: var(--shadow-lg);
    transition: background-color var(--transition-fast);
}

.back-to-top:hover {
    background-color: var(--on-tertiary);
}

.back-to-top.visible {
    display: flex;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--on-background);
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--background);
    z-index: 40;
    padding: 2rem;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav a {
    display: block;
    padding: 1rem 0;
    font-family: var(--font-headline);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--on-background);
    border-bottom: 1px solid var(--outline-variant);
}

/* Search */
.header-search {
    display: none;
    cursor: pointer;
}

@media (min-width: 768px) {
    .header-search {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        transition: background-color var(--transition-fast);
    }

    .header-search:hover {
        background-color: var(--surface-container);
    }
}

.search-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(244, 250, 255, 0.95);
    z-index: 100;
    backdrop-filter: blur(10px);
}

.search-overlay.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-form-wrapper {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
}

.search-form-wrapper input {
    width: 100%;
    padding: 1.25rem;
    font-size: 1.25rem;
    background-color: var(--surface-container-low);
    border: none;
    border-radius: var(--radius-sm);
}

.search-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fadeIn { animation: fadeIn 0.5s ease forwards; }
.animate-slideUp { animation: slideUp 0.5s ease forwards; }

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }

    .hero-section { height: auto; min-height: 600px; padding: 6rem 0; }
    .hero-title { font-size: 2.5rem; }

    .trust-grid { grid-template-columns: 1fr; }
    .categories-header { flex-direction: column; align-items: flex-start; gap: 1rem; }
    .products-grid { grid-template-columns: 1fr; }
    .oem-inner { grid-template-columns: 1fr; }
    .workflow-steps { grid-template-columns: 1fr; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .lead-inner { grid-template-columns: 1fr; }
    .footer-main { grid-template-columns: 1fr; }
}

/* Print */
@media print {
    .site-header,
    .back-to-top,
    .mobile-nav { display: none; }
}