/* ===================================
   INFRADEV ADVISORY - STYLES
   Modern, Professional, Energy-themed
   =================================== */

/* ===================================
   CSS VARIABLES & RESET
   =================================== */

:root {
    /* Primary Colors */
    --color-green: #059669;
    --color-green-dark: #047857;
    --color-green-light: #10b981;
    --color-blue: #2563eb;
    --color-blue-dark: #1e40af;
    --color-purple: #7c3aed;
    --color-orange: #ea580c;

    /* Neutral Colors */
    --color-dark: #1f2937;
    --color-dark-light: #374151;
    --color-gray: #6b7280;
    --color-gray-light: #d1d5db;
    --color-white: #ffffff;
    --color-off-white: #f9fafb;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-green) 0%, var(--color-blue) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--color-blue) 0%, var(--color-purple) 100%);
    --gradient-accent: linear-gradient(135deg, var(--color-orange) 0%, var(--color-purple) 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

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

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-base: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Layout */
    --container-max-width: 1280px;
    --navbar-height: 80px;
}

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

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

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

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

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-label {
    display: inline-block;
    color: var(--color-green);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray);
    max-width: 700px;
    margin: 0 auto;
}

/* ===================================
   NAVIGATION
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background-color: rgba(255, 255, 255, 0.95);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--navbar-height);
}

.logo a {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.logo-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    font-weight: 500;
    margin-top: -4px;
}

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

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background: var(--gradient-primary);
    transition: transform var(--transition-base);
}

.nav-link.active::after,
.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-link.cta-button {
    background: var(--gradient-primary);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-weight: 600;
}

.nav-link.cta-button::after {
    display: none;
}

.nav-link.cta-button:hover {
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 3px;
    background-color: var(--color-dark);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--color-dark);
    border: 2px solid var(--color-gray-light);
}

.btn-outline:hover {
    border-color: var(--color-green);
    color: var(--color-green);
}

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

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: var(--navbar-height);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #e0f2fe 0%, #dbeafe 50%, #e0e7ff 100%);
    opacity: 0.4;
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(5, 150, 105, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 8s ease-in-out infinite;
}

.hero-background::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 6s ease-in-out infinite;
    animation-delay: 2s;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.1); opacity: 0.5; }
}

.hero-content {
    text-align: center;
    z-index: 1;
    padding: var(--spacing-2xl) 0;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-3xl);
}

.stat-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    min-width: 140px;
    text-align: center;
    transition: transform var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-xs);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-gray);
    font-size: var(--font-size-sm);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-gray);
    border-bottom: 2px solid var(--color-gray);
    transform: rotate(45deg);
}

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

/* ===================================
   VALUE PROPOSITIONS
   =================================== */

.value-props {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.value-card {
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    background-color: var(--color-off-white);
    transition: all var(--transition-base);
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    background-color: var(--color-white);
}

.value-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.value-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.value-card p {
    color: var(--color-gray);
    line-height: 1.6;
}

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

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.about-content .lead {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-dark);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

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

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

.mission-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-green);
}

.mission-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.mission-card p {
    color: var(--color-gray);
    line-height: 1.6;
}

.founder-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.founder-image-placeholder {
    width: 180px;
    height: 180px;
    margin: 0 auto var(--spacing-lg);
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.founder-image {
    width: 200px;
    height: 200px;
    margin: 0 auto var(--spacing-lg);
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 4px solid var(--color-white);
    background: var(--color-off-white);
}

.founder-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    display: block;
}

.initials {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-white);
}

.founder-card h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.founder-title {
    font-size: var(--font-size-lg);
    color: var(--color-green);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.founder-bio {
    color: var(--color-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.founder-expertise {
    text-align: left;
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background-color: var(--color-off-white);
    border-radius: var(--radius-lg);
}

.founder-expertise h4 {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.founder-expertise ul {
    list-style: none;
}

.founder-expertise li {
    padding: var(--spacing-xs) 0;
    color: var(--color-gray);
    position: relative;
    padding-left: var(--spacing-md);
}

.founder-expertise li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-green);
    font-weight: 700;
}

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

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

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

.info-item strong {
    color: var(--color-dark);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-item span {
    color: var(--color-gray);
}

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

.services-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

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

.service-card {
    background-color: var(--color-off-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

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

.service-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.service-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.service-card > p {
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

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

.service-list li {
    padding: var(--spacing-xs) 0;
    color: var(--color-gray);
    font-size: var(--font-size-sm);
    position: relative;
    padding-left: var(--spacing-md);
    line-height: 1.6;
}

.service-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-green);
    font-weight: 700;
}

/* ===================================
   SECTORS SECTION
   =================================== */

.sectors-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-off-white) 100%);
}

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

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

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

.sector-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.sector-icon {
    font-size: var(--font-size-3xl);
}

.sector-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-dark);
}

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

.sector-list li {
    padding: var(--spacing-sm) 0;
    color: var(--color-gray);
    position: relative;
    padding-left: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-light);
    line-height: 1.6;
}

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

.sector-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-green);
    font-weight: 700;
}

/* ===================================
   GEOGRAPHIC SECTION
   =================================== */

.geographic-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-off-white);
}

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

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

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

.geo-card-highlight {
    border: 2px solid var(--color-green);
}

.geo-card h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.geo-description {
    color: var(--color-gray);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.geo-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.geo-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-off-white);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-dark);
    font-weight: 500;
}

.geo-strength {
    padding: var(--spacing-md);
    background-color: var(--color-off-white);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--color-gray);
}

.geo-strength strong {
    color: var(--color-green);
}

/* ===================================
   ENGAGEMENT SECTION
   =================================== */

.engagement-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

.engagement-card {
    background: linear-gradient(135deg, #f0fdf4 0%, #dbeafe 100%);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

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

.engagement-logo {
    display: flex;
    align-items: flex-start;
}

.logo-placeholder {
    width: 120px;
    height: 120px;
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: var(--font-size-lg);
    color: var(--color-green);
    box-shadow: var(--shadow-md);
}

.engagement-details h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.engagement-details p {
    margin-bottom: var(--spacing-xs);
    color: var(--color-gray);
}

.engagement-scope {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
}

.engagement-scope h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

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

.scope-item strong {
    display: block;
    color: var(--color-green);
    margin-bottom: var(--spacing-xs);
}

.scope-item ul {
    list-style: none;
    margin-top: var(--spacing-xs);
}

.scope-item li {
    padding: var(--spacing-xs) 0 var(--spacing-xs) var(--spacing-md);
    position: relative;
    color: var(--color-gray);
    font-size: var(--font-size-sm);
}

.scope-item li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-green);
}

.engagement-note {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-blue);
}

.engagement-note p {
    color: var(--color-gray);
    line-height: 1.6;
}

.engagement-note strong {
    color: var(--color-dark);
}

/* ===================================
   WHY CHOOSE SECTION
   =================================== */

.why-choose-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-off-white) 100%);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

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

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

.why-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.why-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.why-card p {
    color: var(--color-gray);
    line-height: 1.6;
}

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

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

.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-form-wrapper {
    background-color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 600;
    color: var(--color-dark);
    font-size: var(--font-size-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-gray-light);
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base);
    background-color: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-green);
}

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

.error-message {
    color: var(--color-orange);
    font-size: var(--font-size-sm);
    display: none;
}

.form-group.error .error-message {
    display: block;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--color-orange);
}

.btn-submit {
    position: relative;
    overflow: hidden;
}

.btn-submit .btn-loading {
    display: none;
}

.btn-submit.loading .btn-text {
    display: none;
}

.btn-submit.loading .btn-loading {
    display: inline;
}

.form-success {
    display: none;
    padding: var(--spacing-md);
    background-color: #d1fae5;
    color: #065f46;
    border-radius: var(--radius-lg);
    text-align: center;
    font-weight: 500;
}

.form-success.show {
    display: block;
}

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

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

.info-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-gray-light);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-icon {
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.contact-details {
    flex: 1;
}

.contact-details strong {
    display: block;
    color: var(--color-dark);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.contact-details a {
    color: var(--color-green);
    transition: color var(--transition-base);
}

.contact-details a:hover {
    color: var(--color-green-dark);
    text-decoration: underline;
}

.contact-details p {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.business-hours {
    background-color: var(--color-off-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.business-hours h4 {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.business-detail {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
    color: var(--color-gray);
    font-size: var(--font-size-sm);
}

.business-detail span:first-child {
    font-weight: 600;
    color: var(--color-dark);
}

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

.footer {
    background-color: var(--color-dark);
    color: var(--color-gray-light);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

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

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

.footer-tagline {
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    max-width: 300px;
}

.footer-links h4 {
    color: var(--color-white);
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

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

.footer-links a {
    color: var(--color-gray-light);
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-dark-light);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-legal {
    font-size: var(--font-size-sm);
}

.footer-license {
    font-size: var(--font-size-sm);
    opacity: 0.7;
    margin-top: var(--spacing-xs);
}

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

.footer-links-inline a {
    font-size: var(--font-size-sm);
    color: var(--color-gray-light);
    transition: color var(--transition-base);
}

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

/* ===================================
   BACK TO TOP BUTTON
   =================================== */

.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

/* Tablets and below (768px) */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --spacing-3xl: 4rem;
        --spacing-2xl: 3rem;
        --navbar-height: 70px;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        transition: transform var(--transition-base);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

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

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

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

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

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

    .engagement-content {
        grid-template-columns: 1fr;
    }

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

    .section-header h2 {
        font-size: var(--font-size-3xl);
    }
}

/* Mobile devices (480px) */
@media (max-width: 480px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-lg: 1rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }

    .value-grid,
    .services-grid,
    .sectors-grid,
    .geographic-grid,
    .why-grid {
        grid-template-columns: 1fr;
    }

    .back-to-top {
        bottom: var(--spacing-lg);
        right: var(--spacing-lg);
        width: 45px;
        height: 45px;
    }
}

/* Large screens (1024px and up) */
@media (min-width: 1024px) {
    .section-header h2 br {
        display: block;
    }
}

/* ===================================
   PROJECT TRACK RECORD SECTION
   =================================== */

.projects-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--color-off-white) 0%, var(--color-white) 100%);
}

.projects-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-2xl) 0;
    padding: var(--spacing-xl);
    background: var(--gradient-primary);
    border-radius: 16px;
}

.stat-highlight {
    text-align: center;
    color: var(--color-white);
}

.stat-highlight .stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-highlight .stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-2xl) 0;
}

.project-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: 12px;
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--color-green);
}

.project-highlight {
    border-left: 4px solid var(--color-green);
}

.project-header {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.project-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-off-white);
    color: var(--color-dark);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.project-card h3 {
    font-size: var(--font-size-xl);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.project-client {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    margin-bottom: var(--spacing-sm);
}

.project-description {
    font-size: var(--font-size-base);
    color: var(--color-dark-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.project-achievements {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-light);
}

.project-achievements strong {
    color: var(--color-dark);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-achievements ul {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-sm);
}

.project-achievements li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
    font-size: var(--font-size-sm);
    color: var(--color-gray);
}

.project-achievements li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-green);
    font-weight: bold;
}

.clients-logos {
    margin-top: var(--spacing-3xl);
    text-align: center;
}

.clients-logos h3 {
    font-size: var(--font-size-2xl);
    color: var(--color-dark);
    margin-bottom: var(--spacing-lg);
}

.logo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.client-logo {
    padding: var(--spacing-lg);
    background: var(--color-off-white);
    border-radius: 8px;
    font-weight: 600;
    color: var(--color-dark);
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80px;
    transition: all 0.3s ease;
}

.client-logo:hover {
    background: var(--color-white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

/* Mobile Responsiveness for Projects */
@media (max-width: 768px) {
    .projects-stats {
        grid-template-columns: repeat(2, 1fr);
        padding: var(--spacing-lg);
    }

    .stat-highlight .stat-number {
        font-size: var(--font-size-3xl);
    }

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

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

@media (max-width: 480px) {
    .projects-stats {
        grid-template-columns: 1fr;
    }

    .project-card {
        padding: var(--spacing-md);
    }

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