/* ============================================
   Oil Rig Professional Website - Stylesheet
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Color Scheme - Professional Industrial Theme */
    --primary-blue: #1a4d7a;
    --dark-blue: #0d2d47;
    --accent-gold: #d4af37;
    --accent-orange: #e67e22;
    --light-gray: #f5f5f5;
    --medium-gray: #9e9e9e;
    --dark-gray: #424242;
    --white: #ffffff;
    --text-dark: #212121;
    --text-light: #757575;
    
    /* Typography */
    --font-primary: 'Roboto', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

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

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
}

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

/* Header and Navigation */
header {
    background-color: var(--dark-blue);
    color: var(--white);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    font-weight: 700;
    color: var(--accent-gold);
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-menu a {
    color: var(--white);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: background-color var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--accent-gold);
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    background-image: url('../images/oil-rig.jpg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--white);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(13, 45, 71, 0.5) 0%, rgba(26, 77, 122, 0.4) 100%);
    z-index: 0;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--accent-gold);
    color: var(--dark-blue);
    font-weight: 600;
    border-radius: 5px;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:hover {
    background-color: var(--accent-orange);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

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

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

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

/* Sections */
.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--accent-gold);
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

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

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Cards */
.card {
    background-color: var(--white);
    border-radius: 8px;
    padding: var(--spacing-md);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.card-icon {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.card h3 {
    color: var(--dark-blue);
    margin-bottom: var(--spacing-sm);
}

.card p {
    color: var(--text-light);
}

/* About Section */
.about {
    background-color: var(--light-gray);
}

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

.about-text {
    font-size: 1.1rem;
}

.about-image {
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    height: 400px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
    transition: transform var(--transition-normal);
}

.about-image:hover img {
    transform: scale(1.05);
}

/* Services Section */
.service-item {
    background-color: var(--light-gray);
    padding: var(--spacing-md);
    border-left: 4px solid var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.service-item h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.service-item ul {
    margin-left: var(--spacing-md);
    color: var(--text-light);
}

.service-item li {
    margin-bottom: var(--spacing-xs);
}

/* Chemicals Section */
.chemical-category {
    margin-bottom: var(--spacing-lg);
    background-color: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: 8px;
}

.chemical-category h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--accent-gold);
}

.chemical-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-sm);
}

.chemical-item {
    background-color: var(--white);
    padding: var(--spacing-sm);
    border-radius: 5px;
    border-left: 3px solid var(--accent-orange);
}

.chemical-item strong {
    color: var(--dark-blue);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.chemical-item p {
    font-size: 0.9rem;
    margin: 0;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.contact-info {
    background-color: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: 8px;
}

.contact-info h3 {
    margin-bottom: var(--spacing-md);
}

.contact-info p {
    margin-bottom: var(--spacing-sm);
}

.contact-info strong {
    color: var(--dark-blue);
}

.contact-form {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-blue);
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid #ddd;
    border-radius: 5px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

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

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

/* Footer */
footer {
    background-color: var(--dark-blue);
    color: var(--white);
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    color: var(--accent-gold);
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    display: block;
    margin-bottom: var(--spacing-xs);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    color: rgba(255, 255, 255, 0.7);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--dark-blue);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .about-content,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .hero {
        padding: var(--spacing-lg) var(--spacing-sm);
        min-height: 500px;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-sm);
    }
    
    .chemical-list {
        grid-template-columns: 1fr;
    }
}



/* Product Detail Page Styles */
.product-detail {
    background-color: var(--white);
    border-radius: 8px;
    padding: var(--spacing-lg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
}

.product-image-section {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.product-image-placeholder {
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border-radius: 8px;
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--white);
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.chemical-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-sm);
}

.product-category-badge {
    display: inline-block;
    background-color: var(--accent-gold);
    color: var(--dark-blue);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.product-info-section h1 {
    margin-bottom: var(--spacing-sm);
}

.product-short-desc {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--light-gray);
}

.product-description {
    margin-bottom: var(--spacing-md);
}

.product-description h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.product-specifications {
    background-color: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
}

.product-specifications h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid #ddd;
}

.specs-table td {
    padding: var(--spacing-xs) 0;
}

.specs-table td:first-child {
    width: 40%;
    color: var(--dark-blue);
}

.specs-table td:last-child {
    color: var(--text-light);
}

.product-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.product-actions .btn {
    flex: 1;
    text-align: center;
}

@media (max-width: 768px) {
    .product-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .product-image-section {
        position: static;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .product-actions .btn {
        width: 100%;
    }
}


/* Video Wrapper Styles */
.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    background-color: #000;
    border-radius: 8px;
}

.video-wrapper video,
.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 8px;
}

.video-wrapper video {
    object-fit: cover;
}

/* Video controls styling */
video::-webkit-media-controls-panel {
    background-color: rgba(0, 0, 0, 0.8);
}

video::-webkit-media-controls-play-button,
video::-webkit-media-controls-volume-slider {
    filter: brightness(1.2);
}

/* Video poster image */
video[poster] {
    object-fit: cover;
}

/* Responsive video adjustments */
@media (max-width: 768px) {
    .video-wrapper {
        padding-bottom: 75%; /* Adjust aspect ratio for mobile if needed */
    }
}