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

:root {
    /* Color Palette */
    --primary-color: #d4af37; /* Gold */
    --secondary-color: #1a1a2e; /* Dark Blue/Black */
    --accent-color: #0f3460; /* Deep Blue */
    --text-dark: #1a1a1a;
    --text-light: #ffffff;
    --text-gray: #6c757d;
    --bg-light: #f8f9fa;
    --bg-dark: #0a0a0a;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #ffffff;
}

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

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

a {
    text-decoration: none;
    color: inherit;
}

/* ===============================================
   Navigation Bar
   =============================================== */
.navbar {
    background-color: var(--secondary-color);
    padding: 0.6rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.nav-brand h2 {
    color: #606693;
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-logo {
    height: 60px;
    width: 200px;
    display: block;
}

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

.nav-link {
    color: var(--text-light);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-light);
    margin: 3px 0;
    transition: var(--transition);
}

/* ===============================================
   Hero Section
   =============================================== */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
    overflow: hidden;
}

/* Hero Background Image */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('images/hero-ship.png');
    background-size: cover;
    background-position: center;
    opacity: 0.75;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.35) 0%, rgba(15, 52, 96, 0.30) 100%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===============================================
   Buttons
   =============================================== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-light);
    border-color: var(--text-light);
}

.btn-secondary:hover {
    background-color: var(--text-light);
    color: var(--text-dark);
    transform: translateY(-2px);
}

/* ===============================================
   Section Headers
   =============================================== */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

.divider {
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    margin: 0 auto 1.5rem;
    border-radius: 2px;
}

/* ===============================================
   About Section
   =============================================== */
.about {
    padding: var(--section-padding);
    background-color: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

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

.about-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

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

.stat-item h4 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 0.9rem;
    color: var(--text-gray);
    margin: 0;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 100%;
    height: 450px;
    background: linear-gradient(135deg, rgba(15, 52, 96, 0.05) 0%, rgba(26, 26, 46, 0.05) 100%),
                url('images/about-port3.PNG');
    background-size: cover;
    background-position: center;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    overflow: hidden;
}

.image-placeholder svg {
    width: 150px;
    height: 150px;
    color: var(--primary-color);
    display: none; /* Hide SVG when using real image */
}

/* ===============================================
   Services Section
   =============================================== */
.services {
    padding: var(--section-padding);
    background-color: #ffffff;
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('images/services-bg2.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    opacity: 0.25;
    z-index: 0;
}

.services .container {
    position: relative;
    z-index: 1;
}

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

.service-card {
    background-color: rgba(248, 249, 250, 0.98);
    padding: 2rem;
    border-radius: 10px;
    transition: var(--transition);
    border: 2px solid transparent;
    backdrop-filter: blur(10px);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}

/* ===============================================
   Bunkering Section (standalone, not part of Our Services)
   =============================================== */
.bunkering {
    padding: var(--section-padding);
    background-color: var(--bg-light);
    position: relative;
    overflow: hidden;
}

.bunkering::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('images/services-bg3.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    opacity: 0.2;
    z-index: 0;
}

.bunkering .container {
    position: relative;
    z-index: 1;
}

.bunkering-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 2.5rem;
    background-color: #ffffff;
    padding: 2.5rem;
    border-radius: 10px;
    border: 3px solid transparent;
    border-image: linear-gradient(135deg, #f8c53c, #e88c2d 55%, #c42d28) 1;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}

.bunkering-icon {
    flex-shrink: 0;
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #f8c53c 0%, #e88c2d 55%, #c42d28 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bunkering-icon svg {
    width: 34px;
    height: 34px;
    color: var(--text-light);
}

.bunkering-text p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.bunkering-text p:last-child {
    margin-bottom: 0;
}

.bunkering-coverage {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    list-style: none;
    margin-bottom: 1rem;
}

.bunkering-coverage li {
    background: linear-gradient(135deg, rgba(248, 197, 60, 0.15), rgba(196, 45, 40, 0.15));
    color: var(--text-dark);
    border: 1px solid rgba(232, 140, 45, 0.4);
    padding: 0.35rem 0.9rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

@media (max-width: 700px) {
    .bunkering-content {
        flex-direction: column;
        align-items: flex-start;
        padding: 1.75rem;
    }
}

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-icon svg {
    width: 30px;
    height: 30px;
    color: var(--text-light);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ===============================================
   Why Choose Us Section
   =============================================== */
.why-choose {
    padding: var(--section-padding);
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.50) 0%, rgba(15, 52, 96, 0.50) 100%),
                url('images/why-choose-bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--text-light);
    position: relative;
}

.why-choose .section-header h2,
.why-choose .section-header p {
    color: var(--text-light);
}

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

.why-item {
    padding: 2rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.why-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateX(10px);
}

.why-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.5;
    margin-bottom: 1rem;
}

.why-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.why-item p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

/* ===============================================
   Contact Section
   =============================================== */
.contact {
    padding: var(--section-padding);
    background-color: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--text-light);
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

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

/* Contact Form */
.contact-form {
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background-color: #ffffff;
}

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

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%236c757d" stroke-width="2"><polyline points="6 9 12 15 18 9"></polyline></svg>');
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 20px;
    padding-right: 40px;
}

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

.contact-form .btn {
    width: 100%;
}

.form-note {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-gray);
    text-align: center;
}

.form-status {
    margin-top: 0.75rem;
    font-size: 0.95rem;
    text-align: center;
    min-height: 1.2em;
}

.form-status-success {
    color: #1e7e34;
}

.form-status-error {
    color: #c0392b;
}

/* ===============================================
   Footer
   =============================================== */
.footer {
    background-color: var(--secondary-color);
    color: var(--text-light);
    padding: 3rem 0 1.5rem;
}

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

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

.footer-section h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.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);
}

/* ===============================================
   Responsive Design
   =============================================== */
@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--secondary-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 1rem 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }

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

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

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

    /* About */
    .about-content {
        grid-template-columns: 1fr;
    }

    .about-stats {
        justify-content: space-around;
    }

    /* Contact */
    .contact-content {
        grid-template-columns: 1fr;
    }

    /* Section Headers */
    .section-header h2 {
        font-size: 2rem;
    }
}

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

    .about-stats {
        flex-direction: column;
        gap: 1rem;
    }

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