/* =====================================================
   GQS - Ground Quant Solutions Website Styles
   Earth-Tone Design System with Mobile-First Approach
   
   Color Palette:
   - Primary Dark: #383C49 (Charcoal gray)
   - Primary Brown: #413A38 (Dark brown)
   - Secondary Brown: #7A6247 (Medium brown)
   - Light Accent: #B4AA9B (Light beige)
   - White: #FFFFFF
   - Text Dark: #2D3748
   - Text Light: #718096
   ===================================================== */

/* =====================================================
   RESET & BASE STYLES
   ===================================================== */

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

:root {
    /* Earth-Tone Color Palette */
    --primary-dark: #383C49;
    --primary-brown: #413A38;
    --secondary-brown: #7A6247;
    --light-accent: #B4AA9B;
    --white: #FFFFFF;
    --text-dark: #2D3748;
    --text-light: #718096;

    /* Typography */
    --font-primary: 'Calibri', 'Arial', sans-serif;

    /* Spacing Scale (8px base unit) */
    --space-xs: 0.5rem;
    /* 8px */
    --space-sm: 1rem;
    /* 16px */
    --space-md: 1.5rem;
    /* 24px */
    --space-lg: 2rem;
    /* 32px */
    --space-xl: 3rem;
    /* 48px */
    --space-2xl: 4rem;
    /* 64px */
    --space-3xl: 6rem;
    /* 96px */

    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 8px;
    --shadow-light: 0 2px 4px rgba(56, 60, 73, 0.1);
    --shadow-medium: 0 4px 8px rgba(56, 60, 73, 0.15);
    --shadow-heavy: 0 8px 16px rgba(56, 60, 73, 0.2);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* =====================================================
   TYPOGRAPHY
   ===================================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--space-sm);
    color: var(--primary-dark);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--space-sm);
    color: var(--text-dark);
}

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

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

ul,
ol {
    list-style: none;
}

/* =====================================================
   LAYOUT COMPONENTS
   ===================================================== */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section-padding {
    padding: var(--space-2xl) 0;
}

/* =====================================================
   ACCESSIBILITY
   ===================================================== */

.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-dark);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    z-index: 100;
    border-radius: 0 0 4px 4px;
}

.skip-link:focus {
    top: 0;
}

/* Focus indicators for accessibility */
button:focus,
input:focus,
textarea:focus,
select:focus,
a:focus {
    outline: 2px solid var(--secondary-brown);
    outline-offset: 2px;
}

/* =====================================================
   HEADER STYLES
   ===================================================== */

.header {
    background-color: var(--white);
    box-shadow: var(--shadow-light);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--transition-medium);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    flex-wrap: wrap;
    gap: var(--space-md);
}

/* Logo Section */
.logo-section {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex: 1;
    min-width: 0;
}

.logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
    border-radius: 50%;
}

.brand-text {
    flex: 1;
    min-width: 0;
}

.company-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tagline {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 0;
    font-style: italic;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Navigation */
.main-nav {
    display: none;
}

/* Show main-nav when menu is open on mobile */
.main-nav:has(.mobile-menu-open) {
    display: block;
}

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

.nav-link {
    font-weight: 600;
    color: var(--text-dark);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus {
    background-color: var(--light-accent);
    color: var(--primary-dark);
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: var(--space-xs);
    background-color: var(--light-accent);
    padding: var(--space-xs);
    border-radius: var(--border-radius);
}

.lang-btn {
    padding: var(--space-xs) var(--space-sm);
    border: none;
    background-color: transparent;
    color: var(--text-dark);
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
    text-decoration: none;
    display: inline-block;
}

.lang-btn:hover,
.lang-btn:focus {
    background-color: var(--secondary-brown);
    color: var(--white);
}

.lang-btn.active {
    background-color: var(--primary-brown);
    color: var(--white);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--border-radius);
    z-index: 1001;
}

.mobile-menu-toggle:focus {
    outline: 2px solid var(--secondary-brown);
    outline-offset: 2px;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background-color: var(--primary-dark);
    transition: all var(--transition-medium);
}

/* Hamburger animation when open */
.mobile-menu-toggle.is-open .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.is-open .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.is-open .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Menu Styles */
.nav-menu.mobile-menu-open {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: var(--shadow-heavy);
    padding: var(--space-lg) var(--space-md);
    gap: 0;
    z-index: 1000;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile menu links styling */
.nav-menu.mobile-menu-open li {
    width: 100%;
    border-bottom: 1px solid #e2e8f0;
}

.nav-menu.mobile-menu-open li:last-child {
    border-bottom: none;
}

.nav-menu.mobile-menu-open .nav-link {
    display: block;
    width: 100%;
    padding: var(--space-md);
    font-size: 1.125rem;
    text-align: left;
    color: var(--text-dark);
}

.nav-menu.mobile-menu-open .nav-link:hover,
.nav-menu.mobile-menu-open .nav-link:focus {
    background-color: var(--light-accent);
    color: var(--primary-dark);
}

/* Prevent body scroll when menu is open */
body.menu-open {
    overflow: hidden;
}

/* =====================================================
   HERO SECTION
   ===================================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    overflow: hidden;
    margin-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-brown) 50%, var(--secondary-brown) 100%);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(56, 60, 73, 0.3);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 var(--space-md);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    color: var(--light-accent);
    font-weight: 400;
}

/* =====================================================
   BUTTONS & CALL-TO-ACTION
   ===================================================== */

.cta-button {
    display: inline-block;
    padding: var(--space-sm) var(--space-xl);
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.cta-button.primary {
    background-color: var(--secondary-brown);
    color: var(--white);
    box-shadow: var(--shadow-medium);
}

.cta-button.primary:hover,
.cta-button.primary:focus {
    background-color: var(--primary-brown);
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
    color: var(--white);
}

.cta-button.secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.cta-button.secondary:hover,
.cta-button.secondary:focus {
    background-color: var(--white);
    color: var(--primary-dark);
}

/* =====================================================
   SERVICES SECTION
   ===================================================== */

.services {
    background-color: #f9f9f9;
    padding: var(--space-3xl) 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
    color: var(--primary-dark);
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.service-card {
    background-color: var(--white);
    padding: var(--space-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: all var(--transition-medium);
    border-top: 4px solid var(--secondary-brown);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
}

.service-icon {
    width: 60px;
    height: 60px;
    background-color: var(--light-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--primary-brown);
}

.service-icon svg {
    width: 30px;
    height: 30px;
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--primary-dark);
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
    color: var(--text-dark);
    line-height: 1.6;
}

.service-features li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--secondary-brown);
    font-weight: bold;
}

/* =====================================================
   ABOUT SECTION
   ===================================================== */

.about {
    padding: var(--space-3xl) 0;
    background-color: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

.about-description {
    flex: 2;
}

.mission-vision {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}

.mission,
.vision {
    padding: var(--space-lg);
    background-color: #f9f9f9;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--secondary-brown);
}

.mission h4,
.vision h4 {
    color: var(--secondary-brown);
    margin-bottom: var(--space-sm);
}

.founded-info {
    margin-top: var(--space-md);
    padding: var(--space-sm);
    background-color: var(--light-accent);
    border-radius: var(--border-radius);
    text-align: center;
}

.core-values {
    flex: 1;
    background-color: #f9f9f9;
    padding: var(--space-xl);
    border-radius: var(--border-radius);
}

.values-list {
    list-style: none;
}

.values-list li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid #e2e8f0;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.values-list li:last-child {
    border-bottom: none;
}

.value-number {
    background-color: var(--secondary-brown);
    color: var(--white);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: bold;
    flex-shrink: 0;
}

/* =====================================================
   FAQ SECTION
   ===================================================== */

.faq {
    background-color: #f9f9f9;
    padding: var(--space-3xl) 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    margin-top: var(--space-2xl);
}

.faq-item {
    background-color: var(--white);
    margin-bottom: var(--space-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    overflow: hidden;
}

.faq-question {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: var(--space-lg);
    margin: 0;
    cursor: pointer;
    font-size: 1.125rem;
    transition: background-color var(--transition-fast);
    position: relative;
}

.faq-question:hover {
    background-color: var(--primary-brown);
}

.faq-question::after {
    content: "+";
    position: absolute;
    right: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-question::after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-answer {
    padding: 0 var(--space-lg);
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.faq-item.active .faq-answer {
    padding: var(--space-lg);
    max-height: 2000px;
    overflow-y: auto;
}

.faq-answer p {
    color: var(--text-dark);
    line-height: 1.6;
    margin: 0;
}

/* Sub-FAQ styles for nested content */
.sub-faq-list {
    margin-top: var(--space-md);
    border-left: 3px solid var(--light-accent);
    padding-left: var(--space-md);
}

.sub-faq-item {
    background-color: #f8f8f8;
    margin-bottom: var(--space-sm);
    border-radius: var(--border-radius);
    border: 1px solid #e2e2e2;
}

.sub-faq-question {
    background-color: var(--secondary-brown);
    color: var(--white);
    padding: var(--space-md);
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    position: relative;
}

.sub-faq-question:hover {
    background-color: var(--primary-brown);
}

.sub-faq-question::after {
    content: "→";
    position: absolute;
    right: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    transition: transform var(--transition-fast);
}

.sub-faq-item.active .sub-faq-question::after {
    transform: translateY(-50%) rotate(90deg);
}

.sub-faq-answer {
    padding: 0 var(--space-md);
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.sub-faq-item.active .sub-faq-answer {
    padding: var(--space-md);
    max-height: 800px;
    overflow-y: auto;
}

.sub-faq-answer p {
    color: var(--text-dark);
    line-height: 1.6;
    margin: 0;
    font-size: 0.95rem;
}

/* Case study styles */
.case-study {
    background-color: #f0f4f8;
    border-left: 4px solid var(--primary-brown);
    padding: var(--space-md);
    margin: var(--space-md) 0;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.case-study h5 {
    color: var(--primary-brown);
    margin-bottom: var(--space-sm);
    font-size: 1.1rem;
}

.case-study p {
    margin: 0;
    line-height: 1.6;
}

/* =====================================================
   CONTACT SECTION
   ===================================================== */

.contact {
    padding: var(--space-3xl) 0;
    background-color: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

.contact-form-container {
    background-color: #f9f9f9;
    padding: var(--space-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
}

.contact-form fieldset {
    border: none;
    padding: 0;
}

.contact-form legend {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--space-xl);
}

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

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 600;
    color: var(--primary-dark);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-sm);
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
    background-color: var(--white);
}

.form-input:focus,
.form-textarea:focus {
    border-color: var(--secondary-brown);
    outline: none;
}

.form-help {
    display: block;
    margin-top: var(--space-xs);
    font-size: 0.875rem;
    color: var(--text-light);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit {
    width: 100%;
    margin-top: var(--space-md);
}

/* Contact Information */
.contact-info {
    flex: 1;
}

.contact-details {
    margin-bottom: var(--space-xl);
}

.contact-details h3 {
    margin-bottom: var(--space-lg);
    color: var(--primary-dark);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.contact-icon {
    width: 40px;
    height: 40px;
    background-color: var(--secondary-brown);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--white);
}

.contact-icon svg {
    width: 20px;
    height: 20px;
}

.contact-text strong {
    display: block;
    color: var(--primary-dark);
    margin-bottom: var(--space-xs);
}

.contact-text a {
    display: block;
    margin-bottom: 4px;
}

.social-media h4 {
    margin-bottom: var(--space-md);
    color: var(--primary-dark);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 48px;
    height: 48px;
    background-color: var(--secondary-brown);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all var(--transition-fast);
}

.social-link:hover,
.social-link:focus {
    background-color: var(--primary-brown);
    transform: translateY(-2px);
    color: var(--white);
}

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

/* =====================================================
   FOOTER STYLES
   ===================================================== */

.footer {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: var(--space-2xl) 0 var(--space-lg);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.footer-logo-img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    border-radius: 50%;
}

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

.footer-brand p {
    color: var(--light-accent);
    margin: 0;
    font-style: italic;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: var(--space-md);
    font-size: 1.125rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-xs);
}

.footer-links a {
    color: var(--light-accent);
    transition: color var(--transition-fast);
}

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

.footer-contact a {
    color: var(--light-accent);
}

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

.footer-bottom {
    border-top: 1px solid var(--primary-brown);
    padding-top: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    text-align: center;
}

.footer-bottom p {
    color: var(--light-accent);
    margin: 0;
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.footer-social-link {
    width: 40px;
    height: 40px;
    background-color: var(--primary-brown);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all var(--transition-fast);
}

.footer-social-link:hover,
.footer-social-link:focus {
    background-color: var(--secondary-brown);
    transform: translateY(-2px);
    color: var(--white);
}

.footer-social-link svg {
    width: 20px;
    height: 20px;
}

/* =====================================================
   RESPONSIVE DESIGN - TABLET (768px+)
   ===================================================== */

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-lg);
    }

    /* Header */
    .header-content {
        padding: var(--space-md) 0;
    }

    .company-name {
        font-size: 1.75rem;
    }

    .main-nav {
        display: block;
    }

    .mobile-menu-toggle {
        display: none;
    }

    /* Typography */
    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 2.5rem;
    }

    /* Hero */
    .hero-title {
        font-size: 4rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    /* Services Grid */
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* About Layout */
    .about-content {
        grid-template-columns: 2fr 1fr;
    }

    .mission-vision {
        grid-template-columns: 1fr 1fr;
    }

    /* Contact Layout */
    .contact-content {
        grid-template-columns: 1fr 1fr;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr 1fr 1fr 1fr;
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* =====================================================
   RESPONSIVE DESIGN - DESKTOP (1024px+)
   ===================================================== */

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-xl);
    }

    /* Typography */
    h1 {
        font-size: 3.5rem;
    }

    h2 {
        font-size: 3rem;
    }

    /* Hero */
    .hero-title {
        font-size: 4.5rem;
    }

    .hero-subtitle {
        font-size: 1.75rem;
    }

    /* Services Grid */
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    /* About Layout */
    .about-content {
        gap: var(--space-3xl);
    }

    /* Footer */
    .footer-content {
        gap: var(--space-2xl);
    }
}

/* =====================================================
   ANIMATIONS & INTERACTIONS
   ===================================================== */

/* Fade in animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll-triggered animations */
.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Loading states */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Form validation states */
.form-input.valid,
.form-textarea.valid {
    border-color: #48bb78;
}

.form-input.invalid,
.form-textarea.invalid {
    border-color: #f56565;
}

/* Success states */
.form-success {
    background-color: #f0fff4;
    border: 1px solid #48bb78;
    color: #2f855a;
    padding: var(--space-sm);
    border-radius: var(--border-radius);
    margin-top: var(--space-sm);
}

/* Error states */
.form-error {
    background-color: #fff5f5;
    border: 1px solid #f56565;
    color: #c53030;
    padding: var(--space-sm);
    border-radius: var(--border-radius);
    margin-top: var(--space-sm);
}

/* =====================================================
   UTILITY CLASSES
   ===================================================== */

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

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

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

.hidden {
    display: none;
}

.visible {
    display: block;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* =====================================================
   PRINT STYLES
   ===================================================== */

@media print {

    .header,
    .mobile-menu-toggle,
    .language-switcher,
    .footer {
        display: none;
    }

    .hero {
        margin-top: 0;
        min-height: auto;
        page-break-after: avoid;
    }

    .service-card,
    .faq-item {
        page-break-inside: avoid;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    h1,
    h2,
    h3 {
        page-break-after: avoid;
    }
}

/* =====================================================
   END OF STYLES
   ===================================================== */