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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 
   CSS Variables
   */
:root {
    --primary-dark: #1e3a5f;
    --primary-blue: #2d5a8a;
    --secondary-blue: #3d7ab5;
    --grey-dark: #2d3748;
    --grey-medium: #4a5568;
    --grey-light: #718096;
    --white: #ffffff;
    --off-white: #f7fafc;
    --light-grey: #e2e8f0;
    --border-color: #cbd5e0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 10px 20px rgba(0, 0, 0, 0.15);
    --accent-gold: #c9a227;
}

/* 
   Container and Layout
  */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent-gold);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* 
   Navigation Bar
  */
.navbar {
    background-color: var(--primary-dark);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 100px;
    display: flex;
    align-items: center;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    height: 60px;
    width: auto;
}

.logo-text {
    font-size: 26px;
    font-weight: 700;
    font-family: Arial, Helvetica, sans-serif;
    display: flex;
    align-items: center;
}

.logo-text .geo {
    color: #c9a227;
}

.logo-text .minerals {
    color: #ffffff;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--white);
    font-weight: 500;
    font-size: 1rem;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--white);
    transition: width 0.3s ease;
}

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

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

/* 
   Hero Section
    */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('images/hero-mining.png') center/cover no-repeat;
    background-attachment: fixed;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 58, 95, 0.85) 0%, rgba(45, 90, 138, 0.75) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
    padding: 0 20px;
    max-width: 800px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 
   Buttons
    */
.btn {
    display: inline-block;
    padding: 14px 36px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: transparent;
    color: var(--white);
    border-color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

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

.about-content {
    max-width: 1200px;
    margin: 0 auto;
}

.about-layout {
    display: flex;
    gap: 50px;
    align-items: center;
}

.about-image {
    flex: 1;
    min-width: 400px;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.about-text {
    flex: 1;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--grey-medium);
    margin-bottom: 20px;
    line-height: 1.8;
}

/* 
   Mission & Vision Section
   */
.mission-vision-section {
    background-color: var(--off-white);
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.card {
    background-color: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--light-grey);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.card h3 {
    font-size: 1.8rem;
    color: var(--primary-dark);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--accent-gold);
}

.card p {
    font-size: 1rem;
    color: var(--grey-medium);
    line-height: 1.7;
    margin-bottom: 20px;
}

.mission-list {
    list-style: none;
    padding: 0;
}

.mission-list li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 12px;
    color: var(--grey-medium);
    font-size: 0.95rem;
}

.mission-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-weight: bold;
}

/* 
   Industry Experience Section
*/
.experience-section {
    background-color: var(--white);
    background-image: url('images/mineral-texture.png');
    background-blend-mode: overlay;
    background-size: cover;
}

.experience-layout {
    display: flex;
    gap: 50px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.experience-text {
    flex: 1;
}

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

.experience-image {
    flex: 1;
    min-width: 400px;
}

.experience-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

/* 
   Value Proposition Section
  */
.value-section {
    background-color: var(--off-white);
    background-image: url('images/chrome-sand.png');
    background-blend-mode: overlay;
    background-size: cover;
    background-attachment: fixed;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--light-grey);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    stroke: var(--white);
}

.feature-card h3 {
    font-size: 1.4rem;
    color: var(--primary-dark);
    margin-bottom: 15px;
}

.feature-card p {
    font-size: 1rem;
    color: var(--grey-medium);
    line-height: 1.6;
}

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

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-info {
    background-color: var(--off-white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.contact-info h3 {
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 10px;
}

.contact-location {
    font-size: 1.2rem;
    color: var(--grey-medium);
    margin-bottom: 30px;
    font-weight: 500;
}

.contact-details {
    text-align: left;
    padding: 20px;
    background-color: var(--white);
    border-radius: 6px;
}

.contact-details p {
    font-size: 1.1rem;
    color: var(--grey-dark);
    margin-bottom: 15px;
}

.contact-details p:last-child {
    margin-bottom: 0;
}

.contact-details a {
    color: var(--accent-gold);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-details a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* 
   Footer
   */
.footer {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: 25px 0;
    text-align: center;
}

.footer p {
    font-size: 0.95rem;
    opacity: 0.9;
}

/* 
   Responsive Design
   */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .about-layout {
        flex-direction: column;
    }
    
    .about-image {
        min-width: 100%;
    }
    
    .experience-layout {
        flex-direction: column;
    }
    
    .experience-image {
        min-width: 100%;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-card:last-child {
        grid-column: span 2;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .navbar {
        height: 80px;
    }
    
    .logo img {
        height: 40px;
    }
    
    .nav-menu {
        gap: 15px;
    }
    
    .nav-link {
        font-size: 0.85rem;
    }
    
    .hero {
        min-height: 500px;
        background-attachment: scroll;
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }
    
    .cards-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card:last-child {
        grid-column: span 1;
        max-width: none;
    }
    
    .card {
        padding: 30px;
    }
    
    .feature-card {
        padding: 30px 25px;
    }
}

@media (max-width: 480px) {
    .navbar {
        height: 70px;
    }
    
    .logo img {
        height: 35px;
    }
    
    .nav-menu {
        gap: 10px;
    }
    
    .nav-link {
        font-size: 0.75rem;
        padding: 4px 0;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn {
        padding: 12px 28px;
        font-size: 0.95rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .card h3 {
        font-size: 1.5rem;
    }
    
    .feature-card h3 {
        font-size: 1.25rem;
    }
    
    .contact-info {
        padding: 30px 20px;
    }
    
    .contact-info h3 {
        font-size: 1.6rem;
    }
}

/* 
   Animations
   */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.card, .feature-card {
    animation: fadeInUp 0.8s ease-out;
}

.cards-container .card:nth-child(1) {
    animation-delay: 0.1s;
}

.cards-container .card:nth-child(2) {
    animation-delay: 0.2s;
}

.features-grid .feature-card:nth-child(1) {
    animation-delay: 0.1s;
}

.features-grid .feature-card:nth-child(2) {
    animation-delay: 0.2s;
}

.features-grid .feature-card:nth-child(3) {
    animation-delay: 0.3s;
}