/* CSS Variables */
:root {
    --navy-blue: #1e3a8a;
    --dark-blue: #1e40af;
    --light-navy: #3b82f6;
    --white: #ffffff;
    --black: #000000;
    --gray-light: #f8fafc;
    --gray-medium: #64748b;
    --gray-dark: #334155;
    --accent-gold: #fbbf24;
    --success-green: #10b981;
    --danger-red: #ef4444;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--black);
    background: var(--white);
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--navy-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(30, 58, 138, 0.3);
    transition: all 0.3s ease;
}

.header.scrolled {
    padding: 0.5rem 0;
    background: rgba(30, 58, 138, 0.95);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--white);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo::before {
    content: "⚓";
    font-size: 2rem;
    color: var(--accent-gold);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 25px;
}

.nav-link:hover, .nav-link.active {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 80%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* Hero Slider */
.hero-slider {
    position: relative;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    background-size: cover !important;
    background-position: center !important;
    background-repeat: no-repeat !important;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 0 2rem;
    z-index: 2;
}

.slide-content h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    animation: slideInFromTop 1s ease-out;
}

.slide-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
    animation: slideInFromBottom 1s ease-out 0.3s both;
}

@keyframes slideInFromTop {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInFromBottom {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cta-button {
    display: inline-block;
    background: var(--accent-gold);
    color: var(--black);
    padding: 1.2rem 2.5rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(251, 191, 36, 0.3);
    animation: fadeInScale 1s ease-out 0.6s both;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(251, 191, 36, 0.4);
    background: #f59e0b;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Slider Navigation */
.slider-nav {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 10;
}

.nav-dot {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    border: 2px solid var(--white);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-dot.active, .nav-dot:hover {
    background: var(--accent-gold);
    border-color: var(--accent-gold);
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--white);
    font-size: 2rem;
    padding: 1rem;
    cursor: pointer;
    border-radius: 50%;
    transition: all 0.3s ease;
    z-index: 10;
}

.slider-arrow:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.slider-arrow.prev {
    left: 30px;
}

.slider-arrow.next {
    right: 30px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Page Content */
.page-content {
    margin-top: 80px;
    min-height: calc(100vh - 80px);
    padding: 4rem 0;
}

/* Section Styles */
.section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 3rem;
    color: var(--navy-blue);
    position: relative;
    font-weight: 700;
}

.section-title::after {
    content: '';
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--navy-blue), var(--accent-gold));
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--gray-medium);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--gray-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--navy-blue), var(--accent-gold));
    transition: all 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
}

.feature-card:hover::before {
    left: 0;
}

.feature-icon {
    color: var(--navy-blue);
    margin-bottom: 1.5rem;
    transform: scale(1);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    color: var(--accent-gold);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--navy-blue);
    font-weight: 600;
}

.feature-card p {
    color: var(--gray-dark);
    line-height: 1.6;
    margin-bottom: 0;
}

/* Services Section */
.services-overview {
    padding: 5rem 0;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    border: 1px solid #e2e8f0;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--navy-blue), var(--dark-blue));
    opacity: 0;
    transition: all 0.4s ease;
    z-index: 1;
}

.service-card:hover::before {
    opacity: 0.95;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(30, 58, 138, 0.2);
}

.service-card:hover * {
    color: var(--white) !important;
    position: relative;
    z-index: 2;
}

.service-icon {
    color: var(--navy-blue);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.service-card h3 {
    color: var(--navy-blue);
    margin-bottom: 1rem;
    font-size: 1.4rem;
    font-weight: 600;
}

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

/* Stats Section */
.stats {
    background: linear-gradient(135deg, var(--navy-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 5rem 0;
    position: relative;
}

.stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" patternUnits="userSpaceOnUse" width="20" height="20"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

.stat-item h3 {
    font-size: 4rem;
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.stat-item p {
    font-size: 1.3rem;
    opacity: 0.9;
    font-weight: 500;
    margin-bottom: 0;
}

/* About Page Styles */
.about-hero {
    background: linear-gradient(135deg, var(--navy-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 8rem 0 5rem;
    text-align: center;
    margin-top: 80px;
}

.about-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.about-hero p {
    font-size: 1.3rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.about-content {
    padding: 5rem 0;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin: 3rem 0;
}

.about-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    border: 1px solid #e2e8f0;
    text-align: center;
}

.about-card h3 {
    color: var(--navy-blue);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

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

/* Contact Form Styles */
.contact-section {
    padding: 5rem 0;
    background: var(--gray-light);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.contact-info h3 {
    color: var(--navy-blue);
    margin-bottom: 2rem;
    font-size: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--gray-light);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-icon {
    color: var(--navy-blue);
    font-size: 1.5rem;
    margin-top: 0.2rem;
}

.contact-details h4 {
    color: var(--navy-blue);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-details p {
    color: var(--gray-dark);
    margin-bottom: 0;
    line-height: 1.5;
}

.contact-form {
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.contact-form h3 {
    color: var(--navy-blue);
    margin-bottom: 2rem;
    font-size: 2rem;
}

.form-group {
    margin-bottom: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--navy-blue);
    font-weight: 600;
    font-size: 1rem;
}

.form-control {
    width: 100%;
    padding: 1.2rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--white);
}

.form-control:focus {
    outline: none;
    border-color: var(--navy-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-control:hover {
    border-color: var(--light-navy);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--navy-blue), var(--dark-blue));
    color: var(--white);
    padding: 1.2rem 3rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    box-shadow: 0 4px 15px rgba(30, 58, 138, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(30, 58, 138, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Gallery Styles */
.gallery-section {
    padding: 5rem 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.gallery-item {
    background: var(--gray-light);
    height: 300px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-medium);
    font-size: 1.2rem;
    font-weight: 600;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border: 2px solid #e2e8f0;
    cursor: pointer;
}

.gallery-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--navy-blue), var(--dark-blue));
    opacity: 0;
    transition: all 0.4s ease;
}

.gallery-item:hover::before {
    opacity: 0.8;
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
    color: var(--white);
}

.gallery-item span {
    position: relative;
    z-index: 2;
}

/* Services Page Styles */
.services-hero {
    background: linear-gradient(135deg, var(--navy-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 8rem 0 5rem;
    text-align: center;
    margin-top: 80px;
}

.services-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.services-hero p {
    font-size: 1.3rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.services-content {
    padding: 5rem 0;
}

.service-detail-card {
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    border-left: 5px solid var(--navy-blue);
    margin-bottom: 3rem;
    transition: all 0.3s ease;
}

.service-detail-card:hover {
    transform: translateX(10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
    border-left-color: var(--accent-gold);
}

.service-detail-card h3 {
    color: var(--navy-blue);
    margin-bottom: 2rem;
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.service-list {
    list-style: none;
    padding-left: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.service-list li {
    padding: 0.8rem 0;
    position: relative;
    padding-left: 2rem;
    color: var(--gray-dark);
    line-height: 1.5;
    transition: all 0.3s ease;
}

.service-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0.8rem;
    color: var(--accent-gold);
    font-weight: bold;
    font-size: 1.2rem;
}

.service-list li:hover {
    color: var(--navy-blue);
    padding-left: 2.5rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--black) 0%, #1a1a1a 100%);
    color: var(--white);
    padding: 4rem 0 2rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" patternUnits="userSpaceOnUse" width="10" height="10"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    position: relative;
    z-index: 1;
}

.footer-section h3 {
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
    font-size: 1.4rem;
    font-weight: 600;
}

.footer-section p, .footer-section li {
    margin-bottom: 0.8rem;
    opacity: 0.9;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.footer-section a:hover {
    color: var(--accent-gold);
    padding-left: 5px;
}

.contact-info {
    margin-top: 1rem;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.8rem;
}

.certifications {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #333;
}

.footer-bottom {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #333;
    opacity: 0.8;
    position: relative;
    z-index: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--navy-blue);
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-container {
        padding: 0 1rem;
    }

    .slide-content h1 {
        font-size: 2.5rem;
    }

    .slide-content p {
        font-size: 1.2rem;
    }

    .slider-arrow {
        display: none;
    }

    .features-grid,
    .services-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .contact-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .about-hero h1,
    .services-hero h1 {
        font-size: 2.5rem;
    }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }

    .section-title {
        font-size: 2.2rem;
    }

    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .slide-content h1 {
        font-size: 2rem;
    }

    .slide-content p {
        font-size: 1rem;
    }

    .cta-button {
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    .feature-card,
    .service-card,
    .contact-form,
    .contact-info {
        padding: 2rem 1.5rem;
    }

    .service-list {
        grid-template-columns: 1fr;
    }
}

/* Loading Animation */
.loading {
    display: none;
    text-align: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--navy-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Accessibility */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles */
.nav-link:focus,
.cta-button:focus,
.form-control:focus,
.btn-primary:focus,
.slider-arrow:focus,
.nav-dot:focus {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header,
    .slider-nav,
    .slider-arrow,
    .footer {
        display: none;
    }
    
    .hero-slider {
        height: auto;
        background: var(--white) !important;
    }
    
    .slide-content {
        color: var(--black) !important;
    }
}