/**
 * Richesin Engineering LLC
 * Main Stylesheet
 * 
 * Colors:
 * --primary: Richesin Green #00913D (lightened)
 * --primary-dark: #007030
 * --accent: Richesin Green #00913D
 * --text: #1a1a1a
 * --text-light: #555555
 * --surface: #f8f9fa
 * --white: #ffffff
 */

/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
    --primary: #00913D;
    --primary-dark: #007030;
    --primary-light: #00a344;
    --accent: #00913D;
    --accent-hover: #00a344;
    --accent-dark: #007030;
    --text: #1a1a1a;
    --text-light: #555555;
    --text-muted: #777777;
    --surface: #f8f9fa;
    --surface-alt: #f0f2f0;
    --border: #d4d9d4;
    --white: #ffffff;
    --success: #00913D;
    --error: #dc3545;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Source Sans 3', sans-serif;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --transition: 0.2s ease;
    --transition-slow: 0.4s ease;
}

*, *::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(--text);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--accent-hover);
}

ul, ol {
    list-style: none;
}

address {
    font-style: normal;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

p:last-child {
    margin-bottom: 0;
}

.lead {
    font-size: 1.25rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ============================================
   Layout
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-narrow {
    max-width: 800px;
}

.section {
    padding: 5rem 0;
}

.section-sm {
    padding: 3rem 0;
}

.section-lg {
    padding: 7rem 0;
}

.section-dark {
    background: var(--primary);
    color: var(--white);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: var(--white);
}

.section-dark .lead {
    color: rgba(255,255,255,0.8);
}

.section-alt {
    background: var(--surface);
}

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

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.section-header h2 {
    margin-bottom: 1rem;
}

.section-label {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    transition: box-shadow var(--transition);
}

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

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

.logo img {
    height: 45px;
    width: auto;
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--text);
    padding: 0.5rem 0;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent);
}

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

.header-phone {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text);
    padding: 0.75rem 1.25rem;
    background: var(--surface);
    border-radius: var(--radius);
    transition: all var(--transition);
}

.header-phone:hover {
    background: var(--accent);
    color: var(--white);
}

.header-phone svg {
    flex-shrink: 0;
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    position: relative;
    transition: background var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: transform var(--transition);
}

.hamburger::before { top: -8px; }
.hamburger::after { bottom: -8px; }

.nav-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: translateY(-8px) rotate(-45deg);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: var(--white);
    border-color: var(--accent);
}

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

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

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

.btn-outline {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

.btn-outline:hover {
    background: var(--accent);
    color: var(--white);
}

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

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.0625rem;
}

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #00a344 0%, #00913D 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 80%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 720px;
}

.hero h1 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero h1 span {
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.hero .lead {
    color: rgba(255,255,255,0.95);
    margin-bottom: 2rem;
    font-size: 1.25rem;
}

.hero .btn-group {
    margin-top: 2.5rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(255,255,255,0.3);
}

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

.hero-stat-value {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.hero-stat-label {
    font-size: 0.9375rem;
    color: rgba(255,255,255,0.9);
}

/* ============================================
   Service Cards
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.service-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    color: var(--white);
}

.service-card h3 {
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.service-card ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.service-card li {
    font-size: 0.8125rem;
    color: var(--text-muted);
    background: var(--surface);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
}

/* ============================================
   Features / Why Choose Us
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    color: var(--accent);
}

.feature-item h4 {
    margin-bottom: 0.75rem;
}

.feature-item p {
    color: var(--text-light);
    font-size: 0.9375rem;
}

/* ============================================
   Testimonials
   ============================================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.testimonial-quote {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text);
    margin-bottom: 1.5rem;
    position: relative;
    padding-left: 1.5rem;
    border-left: 3px solid var(--accent);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-author-info strong {
    display: block;
    font-weight: 600;
    color: var(--text);
}

.testimonial-author-info span {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   Locations
   ============================================ */
.locations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.location-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid var(--border);
    text-align: center;
}

.location-card h3 {
    margin-bottom: 1rem;
    color: var(--accent);
}

.location-card address {
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, #00a344 0%, #00913D 100%);
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 1rem;
}

.cta-section p {
    color: rgba(255,255,255,0.8);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: #00913D;
    color: rgba(255,255,255,0.9);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 3rem;
}

.footer-logo {
    margin-bottom: 1rem;
}

.footer-tagline {
    font-size: 0.9375rem;
    margin-bottom: 1rem;
}

.footer-license {
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.5);
}

.footer-col h3 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col ul a {
    color: rgba(255,255,255,0.7);
    font-size: 0.9375rem;
    transition: color var(--transition);
}

.footer-col ul a:hover {
    color: var(--accent);
}

.footer-location {
    margin-bottom: 1rem;
}

.footer-location strong {
    display: block;
    color: var(--white);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.footer-location address {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
}

.footer-contact li {
    margin-bottom: 0.75rem;
}

.footer-contact a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255,255,255,0.7);
    font-size: 0.9375rem;
}

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

.footer-contact svg {
    flex-shrink: 0;
}

.footer-bottom {
    margin-top: 3rem;
    padding: 1.5rem 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
}

/* ============================================
   Contact Form
   ============================================ */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--white);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

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

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

.form-message {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}

.form-message.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
    background: linear-gradient(135deg, #00a344 0%, #00913D 100%);
    padding: 140px 0 60px;
    text-align: center;
}

.page-header h1 {
    color: var(--white);
    margin-bottom: 1rem;
}

.page-header .lead {
    color: rgba(255,255,255,0.8);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Content Sections
   ============================================ */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

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

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.team-card {
    text-align: center;
    padding: 2rem;
}

.team-card h4 {
    margin-bottom: 0.25rem;
}

.team-card .role {
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 1rem;
}

.team-card p {
    color: var(--text-light);
    font-size: 0.9375rem;
}

/* ============================================
   Service Detail Pages
   ============================================ */
.service-detail {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
}

.service-sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
}

.sidebar-card h4 {
    margin-bottom: 1rem;
}

.sidebar-card ul li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-light);
}

.sidebar-card ul li:last-child {
    border-bottom: none;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .service-detail {
        grid-template-columns: 1fr;
    }
    
    .service-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        transform: translateX(-100%);
        transition: transform var(--transition-slow);
    }
    
    .nav-menu.open {
        transform: translateX(0);
    }
    
    .nav-menu a {
        font-size: 1.25rem;
    }
    
    .header-phone span {
        display: none;
    }
    
    .header-phone {
        padding: 0.75rem;
    }
    
    .hero {
        min-height: auto;
        padding: 120px 0 60px;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .services-grid,
    .features-grid,
    .testimonials-grid,
    .locations-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-col:first-child {
        margin-bottom: 1rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .btn-group .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .hero-stat-value {
        font-size: 2rem;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ============================================
   Utilities
   ============================================ */
.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;
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
}

.faq-item h4 {
    color: var(--primary);
    margin-bottom: 0.75rem;
    font-size: 1.0625rem;
}

.faq-item p {
    color: var(--text-light);
    margin-bottom: 0;
}

/* ============================================
   Utilities
   ============================================ */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }