/* 
  TMC Minerals - Global Styles 
  Modern, clean, blue and white aesthetic
*/

/* --- CSS Variables / Tokens --- */
:root {
    /* Colors based on user's logo and preferences */
    --color-primary: #1F3C88;      /* Deep corporate blue (Logo blue) */
    --color-primary-light: #2D58C2;
    --color-primary-dark: #122452;
    --color-accent: #3366CC;       /* Vibrant blue accent */
    
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-600: #475569;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Typography */
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    
    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    
    /* Effects */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--color-gray-600);
    line-height: 1.6;
    background-color: var(--color-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-gray-900);
    font-weight: 700;
    line-height: 1.2;
}

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

a:hover {
    color: var(--color-accent);
}

img, video {
    max-width: 100%;
    height: auto;
    display: block;
}

.bg-primary-dark {
    background-color: var(--color-primary-dark);
}

.text-white {
    color: var(--color-white) !important;
}

.text-white h1, .text-white h2, .text-white h3, .text-white h4, .text-white p {
    color: var(--color-white) !important;
}

/* --- Utility Classes --- */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-xxl) 0;
}

.bg-light {
    background-color: var(--color-gray-50);
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.section-title span {
    color: var(--color-primary);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-block {
    width: 100%;
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 1rem 0;
}

.navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: var(--shadow-sm);
}

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

.logo-img {
    height: 70px;
    width: auto;
}

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

.nav-link {
    color: var(--color-gray-800);
    font-weight: 500;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: var(--transition);
}

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

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

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

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-primary-dark);
    transition: var(--transition);
}

/* --- Floating WhatsApp --- */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    left: 30px;
    background-color: var(--color-primary);
    color: white;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    color: white;
}

/* --- Popup Form --- */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.6);
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.popup-overlay.active {
    opacity: 1;
    visibility: visible;
}

.popup-content {
    background-color: var(--color-white);
    padding: 3rem;
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 500px;
    position: relative;
    transform: translateY(-20px);
    transition: var(--transition);
}

.popup-overlay.active .popup-content {
    transform: translateY(0);
}

.close-popup {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-gray-600);
}

.popup-content h3 {
    margin-bottom: 0.5rem;
}

.popup-content p {
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

/* --- Hero Section --- */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-color: var(--color-gray-900);
}

.hero-bg img,
.hero-bg video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0.2) 100%);
}

.hero-content {
    max-width: 700px;
    margin: 0;
    color: var(--color-white);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--color-white);
}

.hero .text-gradient {
    background: linear-gradient(135deg, #66b3ff, #e6f2ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #e2e8f0;
}

.hero p {
    font-size: 1.125rem;
    color: var(--color-gray-200);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

/* --- Counters Section --- */
.counters {
    padding: 3rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item h4 {
    font-size: 3rem;
    display: inline-block;
    color: var(--color-white);
    margin-bottom: 0.5rem;
}

.stat-plus {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-item p {
    font-size: 1.1rem;
    color: var(--color-gray-200);
}

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

.about-text .section-title {
    text-align: left;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.feature-list {
    list-style: none;
    margin-top: 2rem;
}

.feature-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: var(--color-gray-800);
}

.feature-list i {
    width: 24px;
    height: 24px;
    background-color: var(--color-primary-light);
    border-radius: 50%;
    display: inline-block;
    position: relative;
}

.feature-list i::after {
    content: '';
    position: absolute;
    left: 8px;
    top: 4px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.image-wrapper {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 2rem;
    border-radius: 50%;
    text-align: center;
    width: 150px;
    height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.experience-badge .number {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.service-card {
    background-color: var(--color-white);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-gray-200);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: var(--color-gray-50);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
}

.card-icon svg {
    width: 32px;
    height: 32px;
}

.service-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

/* --- Gallery Section --- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 4/3;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem 1rem 1rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

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

.testimonial-card {
    background-color: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--color-primary);
}

.stars {
    color: #fbbf24;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.review-text {
    font-style: italic;
    margin-bottom: 1.5rem;
    color: var(--color-gray-800);
}

.reviewer {
    font-weight: 700;
    color: var(--color-primary-dark);
}

/* --- FAQ Section --- */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
    margin: 0;
    background-color: var(--color-gray-50);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--color-primary);
}

.faq-item.active .faq-question::after {
    content: '-';
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 1.5rem;
    max-height: 200px;
    border-top: 1px solid var(--color-gray-200);
}

/* --- Partners Section --- */
.partners-logo {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
    align-items: center;
}

.partner-item {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    filter: grayscale(100%);
    transition: var(--transition);
}

.partner-item:hover {
    color: var(--color-primary);
    filter: grayscale(0%);
}

/* --- Contact Section --- */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-md);
}

.contact-info h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.info-item {
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
}

.info-item i {
    color: var(--color-primary);
    font-size: 1.5rem;
}

.map-placeholder {
    width: 100%;
    height: 100%;
    min-height: 300px;
    background-color: var(--color-gray-100);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-500);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-gray-800);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(31, 60, 136, 0.1);
}

/* --- Footer --- */
.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-200);
    padding-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-logo {
    margin-bottom: 1rem;
    display: inline-block;
}

.footer-brand p {
    color: var(--color-gray-400);
    max-width: 300px;
}

.footer-links h3 {
    color: var(--color-white);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--color-gray-400);
}

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

.footer-bottom {
    border-top: 1px solid var(--color-gray-800);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--color-gray-400);
    font-size: 0.875rem;
}

/* --- Animations & Reveal --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.fade-left { transform: translateX(-50px); }
.fade-right { transform: translateX(50px); }
.fade-left.active, .fade-right.active { transform: translateX(0); }

/* --- Responsive Design --- */
@media (max-width: 992px) {
    .hero h1 { font-size: 3rem; }
    .about-container,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .about-image { order: -1; }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    .hero-overlay {
        background: linear-gradient(to right, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.6) 100%);
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn { display: flex; }
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--color-white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-md);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path 0.4s ease-in-out;
    }
    .nav-links.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }
    .hero h1 { font-size: 2.5rem; }
    .hero-buttons { flex-direction: column; }
    .stats-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .popup-content { padding: 2rem; }
}

/* --- Scroll to Top Button --- */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
}

.scroll-top-btn.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-3px);
}

/* --- Sand Hover Effect --- */
.sand-effect {
    color: var(--color-primary-light);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    display: inline-block;
    transition: all 0.3s ease;
}

.sand-effect:hover {
    color: transparent;
    background: linear-gradient(90deg, #d4af37, #f3e5ab, #d4af37);
    -webkit-background-clip: text;
    background-clip: text;
    animation: blowSand 1.5s infinite alternate;
}

@keyframes blowSand {
    0% {
        text-shadow: 
            1px 1px 0px rgba(212, 175, 55, 0.4),
            -1px -1px 0px rgba(243, 229, 171, 0.3),
            2px -1px 2px rgba(212, 175, 55, 0.5),
            -2px 1px 2px rgba(243, 229, 171, 0.5);
    }
    100% {
        text-shadow: 
            3px 1px 1px rgba(212, 175, 55, 0.2),
            -3px -1px 1px rgba(243, 229, 171, 0.1),
            6px -2px 3px rgba(212, 175, 55, 0.3),
            -6px 2px 3px rgba(243, 229, 171, 0.3);
    }
}