/*
 * OM Hydropower - Modern Corporate Website
 * Clean, Professional Industrial Design
 * Author: Senior Front-End Developer
 * Version: 2.0
 */

/* ========================================
   CSS Variables & Root Configuration
======================================== */
:root {
    /* Force light color scheme */
    color-scheme: light;
    
    /* Primary Colors - Energy Blue/Green Theme */
    --primary-color: #0066cc;
    --primary-dark: #004d99;
    --primary-light: #3399ff;
    --secondary-color: #00a86b;
    --secondary-dark: #008555;
    --secondary-light: #33cc99;
    
    /* Neutral Colors */
    --dark-color: #1a1a2e;
    --dark-secondary: #16213e;
    --gray-900: #212529;
    --gray-800: #343a40;
    --gray-700: #495057;
    --gray-600: #6c757d;
    --gray-500: #adb5bd;
    --gray-400: #ced4da;
    --gray-300: #dee2e6;
    --gray-200: #e9ecef;
    --gray-100: #f8f9fa;
    --white: #ffffff;
    
    /* Accent Colors */
    --accent-yellow: #ffc107;
    --accent-orange: #fd7e14;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Poppins', 'Inter', sans-serif;
    --font-mono: 'Fira Code', 'Consolas', monospace;
    
    /* Font Sizes */
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 1.875rem;
    --fs-4xl: 2.25rem;
    --fs-5xl: 3rem;
    --fs-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Container */
    --container-max: 1320px;
    --container-padding: 1.5rem;
    
    /* Header Height */
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

h1 { font-size: clamp(2.5rem, 5vw, var(--fs-6xl)); }
h2 { font-size: clamp(2rem, 4vw, var(--fs-5xl)); }
h3 { font-size: clamp(1.5rem, 3vw, var(--fs-3xl)); }
h4 { font-size: var(--fs-2xl); }
h5 { font-size: var(--fs-xl); }
h6 { font-size: var(--fs-lg); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--gray-600);
}

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

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

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

ul, ol {
    list-style: none;
}

/* ========================================
   Utility Classes
======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--spacing-4xl) 0;
}

.section-sm {
    padding: var(--spacing-3xl) 0;
}

.section-lg {
    padding: calc(var(--spacing-4xl) * 1.5) 0;
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-subtitle {
    display: inline-block;
    font-size: var(--fs-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding: 0 var(--spacing-lg);
}

.section-subtitle::before,
.section-subtitle::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 2px;
    background: var(--primary-color);
}

.section-subtitle::before {
    left: -20px;
}

.section-subtitle::after {
    right: -20px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: var(--fs-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Background Variants */
.bg-primary { background-color: var(--primary-color); }
.bg-secondary { background-color: var(--secondary-color); }
.bg-dark { background-color: var(--dark-color); }
.bg-light { background-color: var(--gray-100); }
.bg-white { background-color: var(--white); }

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

/* ========================================
   Buttons
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 2rem;
    font-family: var(--font-primary);
    font-size: var(--fs-base);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--secondary-dark);
    border-color: var(--secondary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

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

.btn-outline-white:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

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

.btn-white:hover {
    background: var(--gray-100);
    border-color: var(--gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: var(--fs-lg);
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: var(--fs-sm);
}

.btn-icon {
    width: 50px;
    height: 50px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* ========================================
   Top Bar
======================================== */
.topbar {
    background: var(--primary-dark);
    padding: 0.5rem 0;
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.9);
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.topbar-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.topbar-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.topbar-item i {
    color: var(--secondary-color);
}

.topbar-item a {
    color: rgba(255, 255, 255, 0.9);
    transition: color var(--transition-fast);
}

.topbar-item a:hover {
    color: var(--secondary-color);
}

.topbar-social {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.topbar-social a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.topbar-social a:hover {
    color: var(--secondary-color);
}

/* ========================================
   Header & Navigation
======================================== */
.header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    padding: 1.25rem 0;
}

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

.header .nav-link {
    color: var(--dark-color);
}

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

.header .logo-text {
    color: var(--dark-color);
}

/* Transparent header variant for hero pages */
.header.transparent {
    position: absolute;
    background: transparent;
    box-shadow: none;
}

.header.transparent .nav-link {
    color: var(--white);
}

.header.transparent .nav-link:hover,
.header.transparent .nav-link.active {
    color: var(--secondary-color);
}

.header.transparent .logo-text {
    color: var(--white);
}

.header.transparent.scrolled {
    position: fixed;
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.header.transparent.scrolled .nav-link {
    color: var(--dark-color);
}

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

.header.transparent.scrolled .logo-text {
    color: var(--dark-color);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--white);
    transition: color var(--transition-base);
}

.logo-text span {
    color: var(--secondary-color);
}

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

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

.nav-link {
    font-size: var(--fs-base);
    font-weight: 500;
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 70%;
}

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

/* Dropdown Menu */
.has-dropdown {
    position: relative;
}

.has-dropdown > .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.has-dropdown > .nav-link::after {
    content: '';
    position: static;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    background: none;
    transition: transform var(--transition-fast);
    margin-left: 2px;
    transform: translateX(0);
}

.has-dropdown:hover > .nav-link::after,
.has-dropdown > .nav-link.active::after {
    transform: rotate(180deg);
    width: 0;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
    z-index: 1000;
    list-style: none;
}

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

.dropdown-menu li {
    list-style: none;
}

.dropdown-item {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--dark-color);
    font-size: var(--fs-sm);
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--light-color);
    color: var(--primary-color);
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1002;
    position: relative;
}

.nav-toggle span {
    display: block;
    width: 26px;
    height: 3px;
    background: #1a1a1a;
    background: var(--dark-color, #1a1a1a);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.header.transparent .nav-toggle span {
    background: #ffffff;
    background: var(--white, #ffffff);
}

.header.transparent.scrolled .nav-toggle span {
    background: #1a1a1a;
    background: var(--dark-color, #1a1a1a);
}

.nav-toggle.active span {
    background: #0066cc;
    background: var(--primary-color, #0066cc);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* CTA Button in Header */
.nav-cta .btn {
    padding: 0.625rem 1.5rem;
    font-size: var(--fs-sm);
}

/* ========================================
   Hero Section
======================================== */
.hero {
    position: relative;
    min-height: 600px;
    padding: 5rem 0;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.9), rgba(0, 168, 107, 0.8)),
                url('../img/hero-bg.jpg') center/cover no-repeat;
    overflow: hidden;
}

.hero.hero-full {
    min-height: 100vh;
    padding-top: var(--header-height);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-badge-text {
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.hero-title span {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--fs-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

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

.hero-stat-number {
    font-family: var(--font-heading);
    font-size: var(--fs-4xl);
    font-weight: 700;
    color: var(--white);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.hero-stat-label {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--white);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

.hero-scroll-text {
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-scroll-icon {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 15px;
    position: relative;
}

.hero-scroll-icon::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--white);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 30px; }
}

/* ========================================
   About Section
======================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image-main {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.about-image-main img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    object-position: center;
}

.about-image-badge {
    position: absolute;
    bottom: -30px;
    right: -30px;
    background: var(--secondary-color);
    color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.about-image-badge-number {
    font-family: var(--font-heading);
    font-size: var(--fs-4xl);
    font-weight: 700;
    line-height: 1;
}

.about-image-badge-text {
    font-size: var(--fs-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-content {
    padding-left: var(--spacing-xl);
}

.about-content .section-subtitle {
    padding-left: 0;
}

.about-content .section-subtitle::before {
    display: none;
}

.about-text {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

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

.about-feature-icon {
    width: 24px;
    height: 24px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 12px;
    flex-shrink: 0;
}

.about-feature-text {
    font-weight: 500;
    color: var(--dark-color);
}

/* ========================================
   Services Section
======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    font-size: 2rem;
    color: var(--white);
    transition: transform var(--transition-base);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

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

.service-description {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    font-size: var(--fs-sm);
    letter-spacing: 1px;
}

.service-link i {
    transition: transform var(--transition-fast);
}

.service-link:hover i {
    transform: translateX(5px);
}

/* ========================================
   Projects Section
======================================== */
.projects-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-full);
    font-family: var(--font-primary);
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

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

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.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;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 102, 204, 0.9), transparent);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-xl);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.project-overlay-content {
    transform: translateY(20px);
    transition: transform var(--transition-base);
}

.project-card:hover .project-overlay-content {
    transform: translateY(0);
}

.project-category {
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-xs);
}

.project-overlay-title {
    font-size: var(--fs-xl);
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.project-content {
    padding: var(--spacing-xl);
}

.project-title {
    font-size: var(--fs-xl);
    margin-bottom: var(--spacing-sm);
}

.project-meta {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--gray-500);
    font-size: var(--fs-sm);
}

.project-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ========================================
   Why Choose Us Section
======================================== */
.why-choose-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.why-choose-card {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
}

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

.why-choose-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
}

.why-choose-title {
    font-size: var(--fs-xl);
    margin-bottom: var(--spacing-sm);
}

.why-choose-description {
    color: var(--gray-600);
    line-height: 1.7;
}

/* Stats Counter */
.stats-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: var(--spacing-3xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    text-align: center;
}

.stat-item {
    padding: var(--spacing-lg);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: var(--fs-5xl);
    font-weight: 700;
    color: var(--white);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: var(--fs-base);
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ========================================
   Testimonials Section
======================================== */
.testimonials-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin: var(--spacing-md);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.testimonial-quote {
    font-size: var(--fs-xl);
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    font-style: italic;
    position: relative;
}

.testimonial-quote::before {
    content: '"';
    font-family: Georgia, serif;
    font-size: 5rem;
    color: var(--primary-color);
    opacity: 0.2;
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
}

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

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

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

.testimonial-name {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: var(--spacing-xs);
}

.testimonial-position {
    font-size: var(--fs-sm);
    color: var(--gray-500);
}

.testimonial-rating {
    display: flex;
    gap: 2px;
    color: var(--accent-yellow);
    margin-top: var(--spacing-xs);
}

/* ========================================
   CTA Section
======================================== */
.cta-section {
    background: linear-gradient(135deg, var(--dark-color), var(--dark-secondary)),
                url('../img/cta-bg.jpg') center/cover no-repeat;
    padding: var(--spacing-4xl) 0;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-size: var(--fs-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

/* ========================================
   Footer
======================================== */
.footer {
    background: var(--dark-color);
    color: var(--white);
    padding-top: var(--spacing-4xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-2xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    max-width: 350px;
}

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

.footer-logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.footer-logo-text {
    font-family: var(--font-heading);
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--white);
}

.footer-logo-text span {
    color: var(--secondary-color);
}

.footer-description {
    color: var(--gray-500);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

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

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

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-heading {
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.footer-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--secondary-color);
}

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

.footer-links a {
    color: var(--gray-500);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: var(--spacing-sm);
}

.footer-contact-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--gray-500);
}

.footer-contact-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    flex-shrink: 0;
}

.footer-contact-text {
    line-height: 1.6;
}

.footer-bottom {
    padding: var(--spacing-lg) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-copyright {
    color: var(--gray-500);
    font-size: var(--fs-sm);
}

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

.footer-legal a {
    color: var(--gray-500);
    font-size: var(--fs-sm);
    transition: color var(--transition-fast);
}

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

/* ========================================
   Contact Form (Contact Page)
======================================== */
.contact-form-wrapper {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
}

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

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

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-primary);
    font-size: var(--fs-base);
    color: var(--dark-color);
    background: var(--gray-100);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}

.form-control::placeholder {
    color: var(--gray-500);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

/* ========================================
   Page Headers (Inner Pages)
======================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)),
                url('../img/page-header-bg.jpg') center/cover no-repeat;
    padding: calc(var(--header-height) + var(--spacing-3xl)) 0 var(--spacing-3xl);
    text-align: center;
}

.page-header-content {
    position: relative;
    z-index: 2;
}

.page-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--fs-sm);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

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

.breadcrumb-separator {
    font-size: 0.75rem;
}

/* ========================================
   Animations
======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.6s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* Stagger Animation Delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* ========================================
   Back to Top Button
======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ========================================
   Preloader
======================================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 1200px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }
    
    .footer-brand {
        grid-column: span 2;
        max-width: none;
    }
}

@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .about-image-badge {
        bottom: -20px;
        right: 20px;
    }
    
    .about-content {
        padding-left: 0;
    }
    
    .hero-stats {
        gap: var(--spacing-xl);
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    /* Mobile Navigation at 992px for many menu items */
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed !important;
        top: 0 !important;
        right: -100% !important;
        width: 85% !important;
        max-width: 320px !important;
        height: 100vh !important;
        height: 100dvh !important;
        background-color: #ffffff !important;
        flex-direction: column !important;
        align-items: flex-start !important;
        padding: 80px 20px 30px 20px !important;
        transition: right 0.3s ease-in-out;
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.15);
        z-index: 1001 !important;
        overflow-y: auto !important;
        overflow-x: hidden !important;
        gap: 0 !important;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-menu.active {
        right: 0 !important;
    }
    
    .nav-menu > li {
        width: 100% !important;
        flex-shrink: 0;
        list-style: none !important;
        background-color: transparent !important;
    }
    
    .nav-menu .nav-link,
    .nav-menu > li > .nav-link,
    ul.nav-menu li a.nav-link {
        color: #1a1a2e !important;
        font-size: 1rem !important;
        font-weight: 500 !important;
        padding: 14px 0 !important;
        width: 100% !important;
        border-bottom: 1px solid #e0e0e0 !important;
        display: block !important;
        background-color: transparent !important;
        text-decoration: none !important;
    }
    
    .nav-menu .nav-link:hover,
    .nav-menu .nav-link.active {
        color: #0066cc !important;
    }
    
    .nav-menu .nav-link::after {
        display: none !important;
        content: none !important;
    }
    
    /* Mobile Dropdown */
    .nav-menu .has-dropdown > .nav-link {
        display: flex !important;
        justify-content: space-between !important;
        align-items: center !important;
        width: 100% !important;
    }
    
    .nav-menu .has-dropdown > .nav-link::after {
        content: '' !important;
        display: inline-block !important;
        width: 8px !important;
        height: 8px !important;
        border-right: 2px solid #1a1a2e !important;
        border-bottom: 2px solid #1a1a2e !important;
        transform: rotate(45deg) !important;
        margin-left: auto !important;
        margin-right: 4px !important;
        flex-shrink: 0 !important;
        transition: transform 0.3s ease !important;
        position: static !important;
        background: none !important;
        border-radius: 0 !important;
        border-left: none !important;
        border-top: none !important;
    }
    
    .nav-menu .has-dropdown.active > .nav-link::after {
        transform: rotate(-135deg) !important;
    }
    
    .nav-menu .dropdown-menu {
        position: static !important;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
        box-shadow: none !important;
        background-color: #f0f0f0 !important;
        border-radius: 8px !important;
        padding: 0 !important;
        max-height: 0 !important;
        overflow: hidden !important;
        transition: max-height 0.3s ease, padding 0.3s ease !important;
        margin-top: 8px !important;
        width: 100% !important;
    }
    
    .nav-menu .has-dropdown.active .dropdown-menu {
        max-height: 300px !important;
        padding: 8px 0 !important;
    }
    
    .nav-menu .dropdown-menu li {
        list-style: none !important;
        width: 100% !important;
        background-color: transparent !important;
    }
    
    .nav-menu .dropdown-item,
    .nav-menu .dropdown-menu a,
    ul.nav-menu .dropdown-menu li a {
        display: block !important;
        color: #333333 !important;
        padding: 10px 20px !important;
        border-bottom: 1px solid #e0e0e0 !important;
        background-color: transparent !important;
        text-decoration: none !important;
        font-size: 0.95rem !important;
    }
    
    .nav-menu .dropdown-item:hover,
    .nav-menu .dropdown-menu a:hover {
        background-color: #ffffff !important;
        color: #0066cc !important;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    
    .section {
        padding: var(--spacing-3xl) 0;
    }
    
    .nav-cta {
        margin-top: var(--spacing-lg);
        width: 100%;
    }
    
    .nav-cta .btn {
        width: 100%;
    }
    
    /* Hero */
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .hero-stat {
        display: flex;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .hero-stat-number {
        font-size: var(--fs-3xl);
    }
    
    /* About Features */
    .about-features {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        grid-column: 1;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    .footer-heading::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    /* Form */
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .why-choose-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
}

/* ========================================
   Print Styles
======================================== */
@media print {
    .header,
    .back-to-top,
    .hero-scroll {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-2xl) 0;
    }
    
    .section {
        page-break-inside: avoid;
    }
}

/* ========================================
   Team Section
======================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

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

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.team-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

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

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

.team-social {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

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

.team-social a {
    width: 36px;
    height: 36px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    transition: all var(--transition-fast);
}

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

.team-info {
    padding: var(--spacing-lg);
    text-align: center;
}

.team-name {
    font-size: var(--fs-xl);
    margin-bottom: var(--spacing-xs);
}

.team-position {
    color: var(--primary-color);
    font-weight: 500;
    font-size: var(--fs-sm);
}

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

.contact-info-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
}

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

.contact-info-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--white);
}

.contact-info-title {
    font-size: var(--fs-xl);
    margin-bottom: var(--spacing-sm);
}

.contact-info-text {
    color: var(--gray-600);
    line-height: 1.8;
}

.contact-info-text a {
    color: var(--gray-600);
    transition: color var(--transition-fast);
}

.contact-info-text a:hover {
    color: var(--primary-color);
}

/* Map */
.contact-map {
    height: 400px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.contact-map iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* ========================================
   Timeline (For About Page)
======================================== */
.timeline {
    position: relative;
    padding: var(--spacing-xl) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    position: relative;
    margin-bottom: var(--spacing-2xl);
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 50%;
}

.timeline-content {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    max-width: 400px;
    margin-right: var(--spacing-2xl);
    position: relative;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: 0;
    margin-left: var(--spacing-2xl);
}

.timeline-dot {
    position: absolute;
    right: calc(50% - 10px);
    width: 20px;
    height: 20px;
    background: var(--secondary-color);
    border: 4px solid var(--white);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
}

.timeline-item:nth-child(even) .timeline-dot {
    left: calc(50% - 10px);
    right: auto;
}

.timeline-year {
    font-family: var(--font-heading);
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.timeline-title {
    font-size: var(--fs-lg);
    margin-bottom: var(--spacing-sm);
}

.timeline-description {
    color: var(--gray-600);
    font-size: var(--fs-sm);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 60px;
        padding-right: 0;
        justify-content: flex-start;
    }
    
    .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 0;
        margin-right: 0;
        max-width: 100%;
    }
    
    .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: 10px;
        right: auto;
    }
}

/* ========================================
   Partners/Clients Section
======================================== */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
    align-items: center;
}

.partner-logo {
    padding: var(--spacing-lg) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-color);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    opacity: 0.7;
    transition: all var(--transition-base);
}

.partner-logo:hover {
    opacity: 1;
    background: var(--white);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.partner-logo span {
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--dark-color);
    text-align: center;
}

.partner-logo img {
    max-height: 60px;
    width: auto;
}

/* ========================================
   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);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

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

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

.faq-question i {
    font-size: var(--fs-sm);
    transition: transform var(--transition-base);
}

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

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

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--gray-600);
    line-height: 1.8;
}

/* ========================================
   Gallery/Lightbox
======================================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-base);
}

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

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 102, 204, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay i {
    font-size: 2rem;
    color: var(--white);
}

/* ========================================
   Mobile Menu Overlay
======================================== */
body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   Topbar Responsive
======================================== */
@media (max-width: 768px) {
    .topbar {
        display: none;
    }
    
    .topbar-inner {
        flex-direction: column;
        text-align: center;
    }
    
    .topbar-info {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 576px) {
    .topbar {
        display: none;
    }
}