/* CSS Custom Properties (Design Tokens) */
:root {
    --brand-navy: #14233B;
    --brand-gold: #C39A2E;
    --text-dark: #2B2F36;
    --bg-light: #F5F7FA;
    --white: #FFFFFF;
    --radius: 14px;
    --shadow: 0 8px 28px rgba(20, 35, 59, 0.12);
    --font-heading: 'Manrope', sans-serif;
    --font-body: 'Inter', sans-serif;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

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

h1 {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 700;
}

h2 {
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 600;
}

h3 {
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 600;
}

p {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

@media (min-width: 768px) {
    p {
        font-size: 18px;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 16px;
    letter-spacing: 0.2px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 48px;
}

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

.btn-primary:hover {
    background-color: var(--brand-gold);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

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

.btn-full {
    width: 100%;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(20, 35, 59, 0.1);
    transition: box-shadow 0.3s ease;
}

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

.logo {
    padding: 24px;
}

.logo-img {
    height: 60px;
    width: auto;
    display: block;
}

.lang-toggle {
    background: none;
    border: 2px solid var(--brand-navy);
    border-radius: 20px;
    padding: 4px 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-active {
    color: var(--brand-navy);
    padding: 4px 8px;
    border-radius: 16px;
    background-color: var(--brand-gold);
    color: var(--white);
}

.lang-inactive {
    color: var(--brand-navy);
    padding: 4px 8px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #141E30 0%, var(--brand-navy) 100%);
    color: var(--white);
    padding: 120px 0 var(--spacing-xxl);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
    margin-bottom: var(--spacing-xxl);
}

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
}

.hero-title {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: 20px;
    }
}

/* Forms */
.hero-form {
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

@media (max-width: 568px) {
    .form-group {
        flex-direction: column;
    }
}

.form-input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-input:focus {
    outline: none;
    border-color: var(--brand-gold);
    background: rgba(255, 255, 255, 0.15);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-size: 14px;
    opacity: 0.8;
}

.form-checkbox input[type="checkbox"] {
    margin-top: 2px;
}

.form-checkbox label {
    line-height: 1.4;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Hero Illustration */
.hero-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
}

.building-svg {
    width: 100%;
    max-width: 400px;
    height: auto;
    opacity: 0.9;
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
}

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

.stat-number {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 700;
    color: var(--brand-gold);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
}

/* About Section */
.about {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

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

.about-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.feature-icon {
    width: 24px;
    height: 24px;
    background: var(--brand-gold);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
}

/* Section Titles */
.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    color: var(--brand-navy);
}

/* Expertise Section */
.expertise {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-light);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.expertise-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(20, 35, 59, 0.1);
}

.expertise-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-bottom: 4px solid var(--brand-gold);
}

.card-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}

.expertise-card h3 {
    color: var(--brand-navy);
    margin-bottom: var(--spacing-sm);
}

/* Projects Section */
.projects {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

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

.project-card {
    background: var(--bg-light);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s ease;
}

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

.project-image {
    height: 200px;
    background: linear-gradient(45deg, var(--brand-navy), var(--brand-gold));
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-image {
    font-size: 48px;
    color: var(--white);
    opacity: 0.7;
}

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

.project-location {
    color: var(--brand-gold);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

/* Single Featured Project Styles */
.projects-grid-single {
    display: flex;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
}

/* Two Projects Grid Styles */
.projects-grid-two {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
    .projects-grid-two {
        grid-template-columns: 1fr;
    }
}

/* Three Projects Grid Styles */
.projects-grid-three {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 1024px) {
    .projects-grid-three {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .projects-grid-three {
        grid-template-columns: 1fr;
    }
}

.project-card-featured {
    text-decoration: none;
    color: inherit;
    display: block;
    width: 100%;
}

.project-card-featured:hover {
    transform: translateY(-8px);
}

.project-image-large {
    height: 400px;
    background: none;
}

.project-image-medium {
    height: 300px;
    background: none;
    position: relative;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Project Status Badge */
.project-status {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    z-index: 10;
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.project-status-completed {
    background: rgba(40, 167, 69, 0.9);
    color: var(--white);
}

.project-status-ongoing {
    background: rgba(195, 154, 46, 0.9);
    color: var(--white);
}

.project-link {
    display: inline-flex;
    align-items: center;
    margin-top: var(--spacing-sm);
    color: var(--brand-navy);
    font-weight: 600;
    transition: all 0.3s ease;
}

.project-card-featured:hover .project-link {
    color: var(--brand-gold);
    transform: translateX(4px);
}

.projects-notice {
    text-align: center;
    padding: var(--spacing-lg);
    background: linear-gradient(45deg, var(--brand-navy), var(--brand-gold));
    border-radius: var(--radius);
    color: var(--white);
    font-weight: 600;
}

/* Timeline Section */
.timeline {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-light);
}

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

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--brand-navy);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 24px;
    margin: 0 auto var(--spacing-sm);
    position: relative;
    z-index: 2;
}

.step-content h3 {
    color: var(--brand-navy);
    margin-bottom: var(--spacing-xs);
}

/* Contact Section */
.contact {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

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

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.contact-card {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: var(--radius);
    text-align: center;
    transition: all 0.3s ease;
}

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

.contact-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-sm);
}

.contact-card h3 {
    color: var(--brand-navy);
    font-size: 18px;
    margin-bottom: var(--spacing-xs);
}

.whatsapp-card {
    background: linear-gradient(45deg, #25D366, #128C7E);
    color: var(--white);
}

.whatsapp-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
}

.whatsapp-link:hover {
    text-decoration: underline;
}

/* Contact Form */
.contact-form {
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius);
}

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

@media (max-width: 568px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.contact-form .form-input {
    background: var(--white);
    border: 2px solid rgba(20, 35, 59, 0.1);
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.contact-form .form-input::placeholder {
    color: rgba(43, 47, 54, 0.5);
}

.contact-form .form-input:focus {
    border-color: var(--brand-gold);
}

/* Footer */
.footer {
    background: var(--brand-navy);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.footer-logo {
    height: 50px;
    width: auto;
    margin-bottom: var(--spacing-sm);
    filter: brightness(0) invert(1) drop-shadow(0 0 8px rgba(255, 255, 255, 0.3));
    /* Makes logo white on dark background with subtle glow */
    transition: filter 0.3s ease;
}

.footer-logo:hover {
    filter: brightness(0) invert(1) drop-shadow(0 0 12px rgba(195, 154, 46, 0.6));
    /* Gold glow on hover */
}

.footer-slogan {
    opacity: 0.8;
    margin: 0;
}

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

.social-link {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: var(--brand-gold);
}

.privacy-link {
    background: none;
    border: none;
    color: var(--white);
    text-decoration: underline;
    cursor: pointer;
    font-family: var(--font-body);
}

.privacy-link:hover {
    color: var(--brand-gold);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    padding: var(--spacing-md);
}

.modal-content {
    background: var(--white);
    max-width: 600px;
    margin: 5% auto;
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    position: relative;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-md);
    font-size: 28px;
    cursor: pointer;
    color: var(--text-dark);
}

.modal-close:hover {
    color: var(--brand-gold);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--brand-navy);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 3000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    background: #28a745;
}

.toast.error {
    background: #dc3545;
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

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

.fade-in-delay-1 { animation-delay: 0.2s; }
.fade-in-delay-2 { animation-delay: 0.4s; }
.fade-in-delay-3 { animation-delay: 0.6s; }

/* SVG Animations */
.building-svg rect,
.building-svg polygon {
    opacity: 0;
    animation: drawIn 1s ease forwards;
}

.building-svg rect:nth-child(2) { animation-delay: 0.2s; }
.building-svg rect:nth-child(3) { animation-delay: 0.4s; }
.building-svg rect:nth-child(4) { animation-delay: 0.6s; }
.building-svg polygon:nth-child(9) { animation-delay: 0.8s; }
.building-svg polygon:nth-child(10) { animation-delay: 1s; }

@keyframes drawIn {
    to {
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 100px 0 var(--spacing-lg);
        min-height: auto;
    }
    
    .stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .project-image-large {
        height: 300px;
    }

    .timeline-steps {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .modal-content {
        margin: 2% auto;
        max-height: 95vh;
    }
}