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

:root {
    --slate-grey: #2C3E50;
    --dark-slate: #1a252f;
    --construction-orange: #FF6B35;
    --orange-dark: #E55A2B;
    --white: #FFFFFF;
    --off-white: #F8F9FA;
    --light-grey: #E9ECEF;
    --medium-grey: #6C757D;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-heavy: rgba(0, 0, 0, 0.2);
}

body {
    font-family: 'Heebo', sans-serif;
    line-height: 1.6;
    color: var(--slate-grey);
    background: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
.header {
    background: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 900;
    color: var(--slate-grey);
    letter-spacing: 2px;
    line-height: 1;
}

.logo-subtitle {
    font-size: 0.7rem;
    color: var(--construction-orange);
    font-weight: 500;
    letter-spacing: 1px;
}

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

.nav-link {
    text-decoration: none;
    color: var(--slate-grey);
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--construction-orange);
}

.contact-btn {
    background: var(--construction-orange);
    color: var(--white);
    padding: 0.6rem 1.5rem;
    border-radius: 4px;
}

.contact-btn:hover {
    background: var(--orange-dark);
    color: var(--white);
}

.contact-btn.active {
    color: var(--white);
}

.contact-btn.active::after {
    display: none;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--slate-grey);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    height: 90vh;
    background: linear-gradient(135deg, var(--dark-slate) 0%, var(--slate-grey) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255, 107, 53, 0.03) 10px,
        rgba(255, 107, 53, 0.03) 20px
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 2rem;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    line-height: 1.1;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

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

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    line-height: 1.8;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: var(--construction-orange);
    color: var(--white);
    padding: 1rem 3rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 2px solid var(--construction-orange);
}

.cta-button:hover {
    background: var(--orange-dark);
    border-color: var(--orange-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.3);
}

.cta-button-white {
    background: var(--white);
    color: var(--construction-orange);
    border-color: var(--white);
}

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

/* Section Styles */
.section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    color: var(--construction-orange);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--slate-grey);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.2rem;
    color: var(--medium-grey);
    max-width: 700px;
    margin: 0 auto;
}

/* Projects Grid */
.projects-section {
    background: var(--off-white);
}

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

.project-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px var(--shadow-heavy);
}

.project-image-placeholder {
    height: 250px;
    background: linear-gradient(135deg, var(--slate-grey) 0%, var(--medium-grey) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.placeholder-text {
    font-size: 0.9rem;
    opacity: 0.8;
}

.project-content {
    padding: 1.5rem;
}

.project-category {
    display: inline-block;
    background: var(--construction-orange);
    color: var(--white);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--slate-grey);
    margin-bottom: 0.5rem;
}

.project-description {
    color: var(--medium-grey);
    line-height: 1.6;
}

/* Safety Section */
.safety-section {
    background: var(--slate-grey);
    color: var(--white);
}

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

.safety-text .section-title {
    color: var(--white);
}

.safety-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.safety-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--construction-orange);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.safety-image-placeholder {
    height: 400px;
    background: var(--dark-slate);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Innovation Section */
.innovation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.innovation-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 8px;
    text-align: center;
    border: 2px solid var(--light-grey);
    transition: all 0.3s ease;
}

.innovation-card:hover {
    border-color: var(--construction-orange);
    box-shadow: 0 6px 20px var(--shadow);
    transform: translateY(-5px);
}

.innovation-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.innovation-card h3 {
    font-size: 1.4rem;
    color: var(--slate-grey);
    margin-bottom: 0.8rem;
}

.innovation-card p {
    color: var(--medium-grey);
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    background: var(--construction-orange);
    color: var(--white);
    text-align: center;
    padding: 5rem 0;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Page Hero (for About & Contact) */
.page-hero {
    background: var(--slate-grey);
    color: var(--white);
    text-align: center;
    padding: 5rem 0;
}

.page-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
}

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

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--medium-grey);
}

.about-image-placeholder {
    height: 500px;
    background: var(--slate-grey);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.values-section {
    background: var(--off-white);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.value-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 15px var(--shadow);
}

.value-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.value-card h3 {
    font-size: 1.5rem;
    color: var(--slate-grey);
    margin-bottom: 0.8rem;
}

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

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.team-card {
    text-align: center;
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px var(--shadow);
}

.team-image-placeholder {
    width: 150px;
    height: 150px;
    background: var(--light-grey);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--medium-grey);
}

.team-card h3 {
    font-size: 1.4rem;
    color: var(--slate-grey);
    margin-bottom: 0.5rem;
}

.team-role {
    color: var(--construction-orange);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.team-description {
    color: var(--medium-grey);
    font-size: 0.95rem;
}

.certifications-section {
    background: var(--off-white);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

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

.cert-badge {
    width: 120px;
    height: 120px;
    background: var(--construction-orange);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 900;
    margin: 0 auto 1rem;
    box-shadow: 0 4px 15px var(--shadow);
}

.cert-item p {
    color: var(--slate-grey);
    font-weight: 600;
}

/* Contact Page */
.contact-section {
    background: var(--off-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
}

.contact-form-container {
    background: var(--white);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px var(--shadow);
}

.contact-form-container h2 {
    font-size: 2rem;
    color: var(--slate-grey);
    margin-bottom: 2rem;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--light-grey);
    border-radius: 4px;
    font-family: 'Heebo', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

.contact-form button {
    width: 100%;
    cursor: pointer;
    border: none;
    font-family: 'Heebo', sans-serif;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
    text-align: center;
    font-weight: 600;
    display: none;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    display: block;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    display: block;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-info-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px var(--shadow);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-info-card h3 {
    font-size: 1.3rem;
    color: var(--slate-grey);
    margin-bottom: 0.8rem;
}

.contact-info-card p {
    color: var(--medium-grey);
    line-height: 1.8;
}

.map-placeholder {
    height: 250px;
    background: var(--slate-grey);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

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

.faq-item {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    border-right: 4px solid var(--construction-orange);
}

.faq-item h3 {
    font-size: 1.2rem;
    color: var(--slate-grey);
    margin-bottom: 1rem;
}

.faq-item p {
    color: var(--medium-grey);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--dark-slate);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--construction-orange);
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    line-height: 2;
    text-decoration: none;
    display: block;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--construction-orange);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: -2px 0 10px var(--shadow);
        transition: right 0.3s ease;
        gap: 1rem;
    }

    .nav.active {
        right: 0;
    }

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

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translateY(8px);
    }

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

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translateY(-8px);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .page-title {
        font-size: 2.5rem;
    }

    .safety-content,
    .about-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .projects-grid,
    .innovation-grid,
    .values-grid,
    .team-grid,
    .certifications-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }

    .safety-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .cta-section h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .safety-stats {
        grid-template-columns: 1fr;
    }
}