/*
 * BARIN COMPANY - Static Website Styles
 * =====================================
 */

/* ================================
   CSS Variables
   ================================ */
:root {
    --primary: #e67e22;
    --primary-dark: #d35400;
    --primary-light: #f39c12;
    --secondary: #2c3e50;
    --secondary-dark: #1a252f;
    --secondary-light: #34495e;
    --accent: #f39c12;
    --white: #ffffff;
    --black: #1a1a1a;
    --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;
    --success: #27ae60;
    --danger: #e74c3c;
    
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

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

ul {
    list-style: none;
}

/* ================================
   Utilities
   ================================ */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.text-primary {
    color: var(--primary);
}

.section {
    padding: 5rem 0;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    z-index: 10000;
    transition: top var(--transition-base);
}

.skip-link:focus {
    top: 1rem;
}

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(230, 126, 34, 0.4);
}

.btn-outline-white {
    background: var(--white);
    color: var(--gray-900);
    border: 2px solid var(--white);
}

.btn-outline-white:hover {
    background: var(--gray-100);
    border-color: var(--gray-200);
    color: var(--gray-900);
    transform: translateY(-2px);
}

/* ================================
   Header & Navigation
   ================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: all var(--transition-base);
    padding: 1rem 0;
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    padding: 0.75rem 0;
}

.site-header.scrolled .nav-link {
    color: var(--gray-800);
}

.site-header.scrolled .logo-title,
.site-header.scrolled .logo-tagline {
    color: var(--secondary);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: var(--primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1.5rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1;
    color: var(--white);
    transition: color var(--transition-base);
}

.logo-tagline {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

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

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-base);
}

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

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

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

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    margin: 6px 0;
    transition: all var(--transition-base);
}

.site-header.scrolled .menu-toggle span {
    background: var(--secondary);
}

.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

.menu-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* ================================
   Hero Section
   ================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

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

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.4) 50%, rgba(230,126,34,0.3) 100%);
    z-index: 1;
}

/* Slider Controls */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(4px);
    border: none;
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all var(--transition-base);
}

.slider-arrow:hover {
    background: rgba(255, 255, 255, 0.3);
}

.slider-prev {
    left: 1rem;
}

.slider-next {
    right: 1rem;
}

.slider-dots {
    position: absolute;
    bottom: 6rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 0.75rem;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.slider-dot.active {
    background: var(--primary);
    width: 32px;
    border-radius: var(--radius-full);
}

/* Hero Content */
.hero-content {
    position: relative;
    z-index: 2;
    padding: 8rem 0 4rem;
    width: 100%;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    color: var(--white);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.hero-title span {
    display: block;
}

.hero-subtitle {
    color: var(--white);
    font-size: 2rem;
    font-weight: 300;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.hero-description {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.125rem;
    max-width: 500px;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.hero-contact {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.hero-contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.hero-contact-item i {
    color: var(--primary);
}

/* Stats Card */
.stats-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: 2rem;
}

.stats-title {
    color: var(--white);
    text-align: center;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

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

.stat-item {
    text-align: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.mouse {
    width: 32px;
    height: 48px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-full);
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wheel {
    width: 6px;
    height: 12px;
    background: var(--primary);
    border-radius: var(--radius-full);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(16px); opacity: 0; }
}

/* ================================
   Section Headers
   ================================ */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.section-header-left {
    text-align: left;
    margin-left: 0;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-title span {
    color: var(--primary);
}

.section-description {
    color: var(--gray-600);
    font-size: 1.0625rem;
}

/* ================================
   About Section
   ================================ */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

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

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

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

.experience-badge {
    position: absolute;
    bottom: -1.5rem;
    right: -1.5rem;
    background: var(--primary);
    color: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.exp-number {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.exp-text {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: 0.25rem;
}

.about-content {
    padding: 1rem 0;
}

.about-text {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.feature-item i {
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.feature-item span {
    font-size: 0.9375rem;
    color: var(--gray-700);
}

.about-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.about-card {
    background: var(--gray-100);
    padding: 1.25rem;
    border-radius: var(--radius-lg);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: rgba(230, 126, 34, 0.1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.about-card h4 {
    font-size: 1rem;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

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

/* ================================
   Services Section
   ================================ */
.services {
    background: var(--gray-100);
}

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

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

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

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

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

.service-card:hover .service-image img {
    transform: scale(1.1);
}

.service-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
}

.service-icon {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    width: 48px;
    height: 48px;
    background: var(--primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
}

.service-content {
    padding: 1.5rem;
}

.service-title {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 0.75rem;
}

.service-description {
    color: var(--gray-600);
    font-size: 0.9375rem;
    margin-bottom: 1rem;
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-bottom: 0.375rem;
}

.service-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
}

.service-link:hover {
    gap: 0.75rem;
}

/* ================================
   Projects Section
   ================================ */
.projects {
    background: var(--white);
}

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

.project-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
}

.project-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

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

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--secondary) 0%, rgba(44, 62, 80, 0.8) 50%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-category {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    width: fit-content;
}

.project-title {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.project-meta {
    display: flex;
    gap: 1rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.project-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.project-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.project-footer {
    padding: 1rem 1.25rem;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
}

.project-location {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-600);
    font-size: 0.875rem;
}

.project-location i {
    color: var(--primary);
}

/* Projects Stats */
.projects-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.stat-box {
    text-align: center;
    padding: 1.5rem;
    background: rgba(230, 126, 34, 0.05);
    border-radius: var(--radius-xl);
}

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

.stat-box-label {
    color: var(--gray-600);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* ================================
   Team Section
   ================================ */
.team {
    background: var(--gray-100);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.team-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all var(--transition-base);
}

.team-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.team-avatar {
    position: relative;
    width: 96px;
    height: 96px;
    margin: 0 auto 1rem;
}

.avatar-fallback {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
    font-weight: 700;
}

.team-exp {
    position: absolute;
    bottom: 0;
    right: 0;
    background: var(--secondary);
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 600;
}

.team-name {
    font-size: 1.125rem;
    color: var(--secondary);
    margin-bottom: 0.25rem;
}

.team-role {
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.team-bio {
    color: var(--gray-600);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.team-social {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-base);
}

.team-card:hover .team-social {
    opacity: 1;
    transform: translateY(0);
}

.team-social a {
    width: 32px;
    height: 32px;
    background: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    transition: all var(--transition-base);
}

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

/* Key Engineers */
.key-engineers {
    margin-top: 3rem;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.key-engineers-title {
    text-align: center;
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

.key-engineers-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
}

.key-engineer {
    text-align: center;
    padding: 1rem;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
}

.key-avatar {
    width: 64px;
    height: 64px;
    margin: 0 auto 0.75rem;
    background: rgba(44, 62, 80, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
    font-weight: 700;
}

.key-engineer h4 {
    font-size: 0.875rem;
    color: var(--secondary);
    margin-bottom: 0.25rem;
}

.key-specialty {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-bottom: 0.5rem;
}

.key-exp {
    display: inline-block;
    background: rgba(230, 126, 34, 0.1);
    color: var(--primary);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 600;
}

/* Organization Structure */
.org-structure {
    margin-top: 2rem;
    text-align: center;
}

.org-box {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: rgba(230, 126, 34, 0.05);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-xl);
}

.org-icon {
    width: 48px;
    height: 48px;
    background: var(--primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
}

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

.org-content strong {
    color: var(--secondary);
    display: block;
    margin-bottom: 0.25rem;
}

.org-content p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* ================================
   Contact Section
   ================================ */
.contact {
    background: var(--white);
}

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

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-info-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.contact-info-card:hover {
    background: var(--gray-200);
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
    font-size: 1.25rem;
}

.contact-details h4 {
    font-size: 1rem;
    color: var(--secondary);
    margin-bottom: 0.25rem;
}

.contact-details p {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin: 0;
}

.contact-map {
    background: var(--gray-100);
    border-radius: var(--radius-xl);
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

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

.map-content i {
    color: var(--primary);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

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

.legal-info {
    background: rgba(44, 62, 80, 0.05);
    padding: 1.5rem;
    border-radius: var(--radius-xl);
}

.legal-info h4 {
    font-size: 1rem;
    color: var(--secondary);
    margin-bottom: 1rem;
}

.legal-info p {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--gray-100);
    padding: 2rem;
    border-radius: var(--radius-xl);
}

.contact-form-wrapper h3 {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

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

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.375rem;
}

.form-group .required {
    color: var(--danger);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    background: var(--white);
    transition: all var(--transition-base);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.1);
}

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

.btn-submit {
    width: 100%;
}

/* Form Success */
.form-success {
    text-align: center;
    padding: 3rem 1rem;
}

.success-icon {
    width: 64px;
    height: 64px;
    background: rgba(39, 174, 96, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--success);
    font-size: 2rem;
    margin: 0 auto 1rem;
}

.form-success h4 {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.form-success p {
    color: var(--gray-600);
    margin: 0;
}

/* ================================
   Footer
   ================================ */
.site-footer {
    background: var(--secondary);
    color: var(--white);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 2rem;
    padding-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo .logo-icon {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
}

.footer-logo .logo-title {
    font-size: 1.125rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all var(--transition-base);
}

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

.footer-column h4 {
    font-size: 1.125rem;
    color: var(--white);
    margin-bottom: 1.25rem;
}

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

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

.footer-links a::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

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

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
}

.footer-contact i {
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 0.25rem;
}

/* Footer Bottom */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 0;
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    margin: 0;
}

.legal {
    display: flex;
    gap: 1.5rem;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

/* ================================
   Back to Top Button
   ================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--primary);
    border: none;
    border-radius: 50%;
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* ================================
   Responsive Styles
   ================================ */
@media (max-width: 1024px) {
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        transition: right var(--transition-base);
        z-index: 1000;
        box-shadow: var(--shadow-xl);
    }
    
    .main-nav.open {
        right: 0;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }
    
    .nav-link {
        color: var(--gray-800);
        padding: 1rem 0;
        border-bottom: 1px solid var(--gray-200);
    }
    
    .nav-btn {
        margin-top: 1rem;
        width: 100%;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-right {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .experience-badge {
        right: 0;
        bottom: -1rem;
    }
    
    .services-grid,
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .key-engineers-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 3rem 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .about-features,
    .about-cards {
        grid-template-columns: 1fr;
    }
    
    .services-grid,
    .projects-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info-grid,
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .key-engineers-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom-inner {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .legal {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .slider-arrow {
        display: none;
    }
    
    .org-box {
        flex-direction: column;
        text-align: center;
    }
    
    .org-content {
        text-align: center;
    }
}

/* ================================
   Print Styles
   ================================ */
@media print {
    .site-header,
    .site-footer,
    .back-to-top,
    .slider-dots,
    .scroll-indicator,
    .slider-arrow {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    .hero-slide {
        opacity: 1 !important;
        position: relative !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .section {
        padding: 1rem 0;
        page-break-inside: avoid;
    }
}

/* ================================
   Accessibility
   ================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus styles */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}