/*
 * Tensor Website Stylesheet
 * Engineering Simulation Services
 */

/* ============================================
   CSS Variables
   ============================================ */
:root {
    /* Colors */
    --primary-color: #01817f;
    --primary-dark: #016766;
    --primary-light: #01917f;
    --accent-color: #057b8d;
    --gradient-end: #386BB7;

    /* Neutral Colors */
    --white: #ffffff;
    --black: #000000;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;

    /* Typography */
    --font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* Header */
    --header-height: 80px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* 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);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 9999px;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: var(--line-height-base);
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
    list-style: none;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gradient-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   Layout & Container
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-xxl) 0;
}

.section-lg {
    padding: calc(var(--spacing-xxl) * 2) 0;
}

/* ============================================
   Header (Fixed)
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-lg);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo img {
    height: 60px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-weight: 500;
    color: var(--gray-700);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--gradient-end));
    transition: width var(--transition-base);
}

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

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

/* Dropdown */
.nav-item {
    position: relative;
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
}

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

.nav-dropdown a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--gray-700);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-dropdown a:hover {
    background: var(--gray-100);
    color: var(--primary-color);
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
    cursor: pointer;
    background: none;
    border: none;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-800);
    transition: all var(--transition-base);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gradient-end) 100%);
    color: var(--white);
}

.btn-gradient:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 550px;
    margin-right: auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.hero-stat {
    display: flex;
    flex-direction: column;
}

.hero-stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
}

.hero-stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-top: var(--spacing-xs);
}

.hero-image {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    max-width: 50%;
    z-index: 0;
}

.hero-video {
    position: absolute;
    right: 7%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero-video iframe {
    display: block;
    width: 560px;
    height: 315px;
    border-radius: var(--radius-lg);
}

/* ============================================
   Services Section
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gradient-end) 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.service-icon svg,
.service-icon img {
    width: 32px;
    height: 32px;
    color: var(--white);
    filter: brightness(0) invert(1);
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.service-description {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   About Section
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-content h2 {
    margin-bottom: var(--spacing-lg);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-top: var(--spacing-xs);
}

/* ============================================
   Blog Section
   ============================================ */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.blog-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.blog-card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-content {
    padding: var(--spacing-lg);
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: var(--spacing-sm);
}

.blog-card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.blog-card-title a {
    color: var(--gray-900);
}

.blog-card-title a:hover {
    color: var(--primary-color);
}

.blog-card-excerpt {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-link {
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.blog-card-link::after {
    content: '\2192';
    transition: transform var(--transition-fast);
}

.blog-card-link:hover::after {
    transform: translateX(4px);
}

/* ============================================
   Contact Section
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-form {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-700);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-family);
    font-size: 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(1, 129, 127, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
}

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

.footer-logo {
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    height: 40px;
    filter: brightness(0) invert(1);
}

.footer-description {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-800);
    border-radius: var(--radius-full);
    color: var(--gray-400);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-color);
    color: var(--white);
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-800);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    color: var(--gray-500);
}

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

/* ============================================
   Page Header (Inner Pages)
   ============================================ */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gradient-end) 100%);
    color: var(--white);
    padding: calc(var(--header-height) + var(--spacing-xxl)) 0 var(--spacing-xxl);
    text-align: center;
}

.page-header h1 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    opacity: 0.9;
}

.breadcrumb a {
    color: var(--white);
    opacity: 0.8;
}

.breadcrumb a:hover {
    opacity: 1;
}

.breadcrumb span {
    opacity: 0.6;
}

/* ============================================
   Problems Section
   ============================================ */
.problems-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-lg);
}

.problem-card {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.problem-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    border-radius: var(--radius-full);
}

.problem-icon svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.problem-card h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.problem-card p {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0;
}

/* ============================================
   Solutions Section
   ============================================ */
.solutions-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.solution-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.solution-item:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.solution-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    opacity: 0.5;
    line-height: 1;
    min-width: 50px;
}

.solution-content h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.solution-content p {
    color: var(--gray-600);
    margin-bottom: 0;
}

/* ============================================
   Benefits Section
   ============================================ */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.benefit-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
}

.benefit-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary-color);
}

.benefit-card h3 {
    font-size: 1.125rem;
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.benefit-card p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0;
}

/* ============================================
   Process Section
   ============================================ */
.process-timeline {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--spacing-md);
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 25px;
    left: 25px;
    right: 25px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--gradient-end));
}

.process-step {
    text-align: center;
    position: relative;
}

.process-step-number {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gradient-end) 100%);
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    position: relative;
    z-index: 1;
}

.process-step-content h3 {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.process-step-content p {
    font-size: 0.8rem;
    color: var(--gray-600);
    margin-bottom: 0;
}

/* ============================================
   Results Section
   ============================================ */
.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.result-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.result-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-lg);
}

.result-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gradient-end) 100%);
    border-radius: var(--radius-full);
}

.result-icon svg {
    width: 28px;
    height: 28px;
    color: var(--white);
}

.result-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.result-card p {
    color: var(--gray-600);
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.testimonial-content {
    margin-bottom: var(--spacing-lg);
}

.testimonial-content p {
    font-style: italic;
    color: var(--gray-700);
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: 0;
}

.testimonial-content p::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -10px;
    font-size: 3rem;
    color: var(--primary-color);
    opacity: 0.3;
    font-family: Georgia, serif;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gradient-end) 100%);
    color: var(--white);
    font-weight: 700;
    border-radius: var(--radius-full);
}

.testimonial-info strong {
    display: block;
    color: var(--gray-900);
}

.testimonial-info span {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* ============================================
   Use Cases Section
   ============================================ */
.use-case-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.use-case-block.use-case-reverse {
    direction: rtl;
}

.use-case-block.use-case-reverse > * {
    direction: ltr;
}

.use-case-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gradient-end) 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.use-case-icon svg {
    width: 32px;
    height: 32px;
    color: var(--white);
}

.use-case-content h2 {
    margin-bottom: var(--spacing-md);
}

.use-case-list {
    margin: var(--spacing-lg) 0;
    padding-left: var(--spacing-lg);
}

.use-case-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--gray-600);
}

.use-case-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
}

.use-case-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.use-case-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

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

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    background: var(--white);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: var(--gray-100);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    color: var(--primary-color);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--gray-600);
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    display: block;
}

/* ============================================
   Software Distribution Section
   ============================================ */
.software-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.software-block.software-reverse {
    direction: rtl;
}

.software-block.software-reverse > * {
    direction: ltr;
}

.software-logo {
    margin-bottom: var(--spacing-lg);
}

.software-logo img {
    height: 50px;
    width: auto;
}

.software-content h2 {
    margin-bottom: var(--spacing-sm);
}

.software-tagline {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.software-content h3 {
    font-size: 1.125rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.software-features {
    list-style: none;
    padding: 0;
}

.software-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--gray-700);
}

.software-features svg {
    width: 20px;
    height: 20px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.software-applications {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.app-tag {
    background: var(--gray-200);
    color: var(--gray-700);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
}

.software-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.software-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.software-image img {
    width: 100%;
    height: auto;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.support-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.support-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.support-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gradient-end) 100%);
    border-radius: var(--radius-full);
}

.support-icon svg {
    width: 28px;
    height: 28px;
    color: var(--white);
}

.support-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.support-card p {
    color: var(--gray-600);
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* ============================================
   About Page Additional Styles
   ============================================ */
.certification-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--gradient-end) 100%);
    color: var(--white);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--radius-full);
}

.company-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.company-info-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.company-info-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.company-details {
    list-style: none;
    padding: 0;
}

.company-details li {
    margin-bottom: var(--spacing-sm);
    color: var(--gray-700);
}

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

.social-links-large {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.social-link-lg {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-100);
    border-radius: var(--radius-md);
    color: var(--gray-700);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.social-link-lg:hover {
    background: var(--primary-color);
    color: var(--white);
}

.social-link-lg svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   Utilities
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-xxl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-xxl); }

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xxl);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    color: var(--gray-600);
    font-size: 1.125rem;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-image {
        max-width: 45%;
        opacity: 0.5;
    }

    .hero-video {
        right: 2%;
    }

    .hero-video iframe {
        width: 400px;
        height: 225px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }

    .problems-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-timeline {
        grid-template-columns: repeat(4, 1fr);
        row-gap: var(--spacing-xl);
    }

    .process-timeline::before {
        display: none;
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }

    .nav-list {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    /* Mobile Menu */
    .nav-list.active {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--white);
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        overflow-y: auto;
    }

    .nav-list.active .nav-link {
        font-size: 1.25rem;
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--gray-200);
    }

    .nav-item:hover .nav-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: var(--spacing-lg);
    }

    .hero {
        min-height: auto;
        padding: calc(var(--header-height) + var(--spacing-xl)) 0 var(--spacing-xl);
    }

    .hero-image,
    .hero-video {
        display: none;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .hero-buttons {
        flex-direction: column;
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .problems-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .benefits-grid {
        grid-template-columns: 1fr;
    }

    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .use-case-block,
    .use-case-block.use-case-reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }

    .use-case-image {
        order: -1;
    }

    .use-case-image img {
        height: 250px;
    }

    .software-block,
    .software-block.software-reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }

    .software-image {
        order: -1;
    }

    .software-cta {
        flex-direction: column;
    }

    .support-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .company-info-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        max-width: 100%;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .footer-legal {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .services-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .stat-item {
        padding: var(--spacing-md);
        background: var(--gray-100);
        border-radius: var(--radius-md);
    }

    .problems-grid {
        grid-template-columns: 1fr;
    }

    .process-timeline {
        grid-template-columns: 1fr;
    }

    .solution-item {
        flex-direction: column;
        text-align: center;
    }

    .solution-number {
        margin: 0 auto;
    }

    .support-grid {
        grid-template-columns: 1fr;
    }
}