/* ==========================================================================
   MineitZm Minerals Limited - Main Stylesheet
   Corporate Brand Theme: MineitZm Green, Dark Charcoal, Gold Accents
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800;900&display=swap');

:root {
  /* Brand Color Palette */
  --primary-green: #00A859;
  --primary-green-hover: #00C853;
  --primary-green-dark: #075E33;
  --primary-green-glow: rgba(0, 168, 89, 0.25);
  
  --accent-gold: #D4AF37;
  --accent-gold-light: #FFE082;
  --accent-gold-glow: rgba(212, 175, 55, 0.3);
  
  --dark-bg-main: #0D120F;
  --dark-bg-surface: #141C17;
  --dark-bg-card: #1A251E;
  --dark-bg-border: #2A3B30;
  
  --light-bg-main: #F4F7F5;
  --light-bg-surface: #FFFFFF;
  --light-bg-card: #FFFFFF;
  --light-border: #E0E7E2;

  --text-white: #FFFFFF;
  --text-light: #E4EAE6;
  --text-muted: #9EB0A5;
  --text-dark: #121A15;
  --text-dark-muted: #5C6E63;

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing & Layout */
  --header-height: 84px;
  --container-max-width: 1280px;
  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows */
  --shadow-sm: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.25);
  --shadow-lg: 0 16px 40px rgba(0,0,0,0.4);
  --shadow-green: 0 8px 30px rgba(0, 168, 89, 0.3);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--dark-bg-main);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-white);
}

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

a:hover {
  color: var(--primary-green-hover);
}

p {
  margin-bottom: 1rem;
}

.text-green { color: var(--primary-green) !important; }
.text-gold { color: var(--accent-gold) !important; }
.text-muted { color: var(--text-muted) !important; }

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Tagline Badges & Buttons */
.badge-tagline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 168, 89, 0.15);
  border: 1px solid var(--primary-green);
  color: var(--primary-green);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.badge-emerging {
  background: rgba(212, 175, 55, 0.15);
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 1.8rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: var(--primary-green);
  color: var(--text-white);
  box-shadow: 0 4px 15px rgba(0, 168, 89, 0.3);
}

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

.btn-secondary {
  background: rgba(255,255,255,0.05);
  color: var(--text-white);
  border-color: rgba(255,255,255,0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--text-white);
  color: var(--text-white);
  transform: translateY(-2px);
}

.btn-gold {
  background: var(--accent-gold);
  color: #0D120F;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-gold:hover {
  background: var(--accent-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(212, 175, 55, 0.4);
}

/* Header & Navbar */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(13, 18, 15, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--dark-bg-border);
  z-index: 1000;
  transition: all var(--transition-fast);
}

.site-header.scrolled {
  background: rgba(10, 14, 12, 0.98);
  box-shadow: var(--shadow-md);
  height: 74px;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-container {
  display: flex;
  align-items: center;
  height: 52px;
}

.logo-container img {
  height: 100%;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-light);
  padding: 0.5rem 0.2rem;
  position: relative;
  transition: color var(--transition-fast);
}

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

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

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-white);
  font-size: 1.8rem;
  cursor: pointer;
}

/* Page Section View System (SPA router compatible) */
.page-view {
  display: none;
  animation: fadeIn 0.4s ease-in-out forwards;
}

.page-view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 90vh;
  padding-top: calc(var(--header-height) + 3rem);
  padding-bottom: 5rem;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(13, 18, 15, 0.95) 0%,
    rgba(13, 18, 15, 0.8) 50%,
    rgba(7, 94, 51, 0.4) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 850px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  color: var(--text-white);
  text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--accent-gold-light);
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-light);
  margin-bottom: 2.2rem;
  max-width: 750px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
}

/* Feature Grid / Cards */
.section-padding {
  padding: 5rem 0;
}

.section-padding-sm {
  padding: 3rem 0;
}

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

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

.bg-light {
  background-color: var(--light-bg-main);
  color: var(--text-dark);
}

.bg-light h1, .bg-light h2, .bg-light h3, .bg-light h4 {
  color: var(--text-dark);
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3.5rem auto;
}

.section-header .subtitle {
  color: var(--primary-green);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: block;
}

.section-header .title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  margin-bottom: 1rem;
}

.section-header .description {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* Cards Design System */
.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.cards-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2.5rem;
}

.cards-grid-5 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card-capability {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-bg-border);
  border-radius: var(--border-radius-md);
  padding: 2.2rem;
  position: relative;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.card-capability::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-green), var(--accent-gold));
  border-top-left-radius: var(--border-radius-md);
  border-top-right-radius: var(--border-radius-md);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.card-capability:hover {
  transform: translateY(-8px);
  border-color: var(--primary-green);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 168, 89, 0.15);
}

.card-capability:hover::before {
  opacity: 1;
}

.card-num {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--accent-gold);
  margin-bottom: 1rem;
}

.card-icon {
  width: 56px;
  height: 56px;
  background: rgba(0, 168, 89, 0.12);
  border: 1px solid rgba(0, 168, 89, 0.3);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary-green);
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
}

.card-list {
  list-style: none;
  margin-top: 1rem;
}

.card-list li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  color: var(--text-light);
}

.card-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-green);
  font-weight: bold;
}

/* Split Section (Image + Content) */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.split-image-container {
  position: relative;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--dark-bg-border);
}

.split-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-normal);
}

.split-image-container:hover img {
  transform: scale(1.03);
}

/* Commodity Cards */
.commodity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.8rem;
}

.commodity-card {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-bg-border);
  border-radius: var(--border-radius-md);
  padding: 1.8rem;
  transition: all var(--transition-fast);
}

.commodity-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-4px);
}

.commodity-icon {
  font-size: 2.2rem;
  margin-bottom: 0.75rem;
}

/* Interactive Workflow (Trading Steps) */
.workflow-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  position: relative;
}

.step-card {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-bg-border);
  border-radius: var(--border-radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  transition: all var(--transition-fast);
}

.step-card:hover {
  border-color: var(--primary-green);
  box-shadow: var(--shadow-green);
}

.step-number {
  width: 48px;
  height: 48px;
  background: var(--primary-green);
  color: var(--text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.2rem;
  margin: 0 auto 1.2rem auto;
}

/* Supply Grid Categories */
.supply-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.supply-item {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-bg-border);
  border-radius: var(--border-radius-sm);
  padding: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: all var(--transition-fast);
}

.supply-item:hover {
  background: #1F2E25;
  border-color: var(--primary-green);
}

.supply-item-icon {
  font-size: 1.8rem;
  color: var(--primary-green);
  flex-shrink: 0;
}

/* Project Portfolio & Filters */
.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-bg-border);
  color: var(--text-light);
  padding: 0.6rem 1.4rem;
  border-radius: 50px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--primary-green);
  color: var(--text-white);
  border-color: var(--primary-green);
  box-shadow: 0 4px 12px rgba(0, 168, 89, 0.3);
}

.project-card {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-bg-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-green);
  box-shadow: var(--shadow-md);
}

.project-img {
  height: 200px;
  width: 100%;
  object-fit: cover;
}

.project-info {
  padding: 1.5rem;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--accent-gold);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

/* Contact Form & Info */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
}

.contact-info-card {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-bg-border);
  border-radius: var(--border-radius-md);
  padding: 2.5rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  margin-bottom: 1.8rem;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(0, 168, 89, 0.15);
  border: 1px solid var(--primary-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-green);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.form-group {
  margin-bottom: 1.4rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-light);
}

.form-control {
  width: 100%;
  padding: 0.9rem 1.1rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--dark-bg-border);
  border-radius: var(--border-radius-sm);
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-green);
  box-shadow: 0 0 10px rgba(0, 168, 89, 0.25);
  background: rgba(255,255,255,0.07);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2300A859'%3e%3cpath d='M7 10l5 5 5-5z'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.5rem;
}

select.form-control option {
  background-color: var(--dark-bg-card);
  color: var(--text-white);
}

/* Footer */
.site-footer {
  background-color: #070B09;
  border-top: 1px solid var(--dark-bg-border);
  padding: 4rem 0 2rem 0;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo img {
  height: 48px;
  margin-bottom: 1rem;
}

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

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--primary-green);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Interactive Modal & Toast Notification */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: var(--dark-bg-card);
  border: 1px solid var(--dark-bg-border);
  border-radius: var(--border-radius-md);
  max-width: 600px;
  width: 90%;
  padding: 2.5rem;
  position: relative;
  transform: scale(0.9);
  transition: transform var(--transition-fast);
}

.modal-backdrop.active .modal-box {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.toast-notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--primary-green);
  color: var(--text-white);
  padding: 1rem 1.8rem;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-lg);
  font-family: var(--font-heading);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 3000;
}

.toast-notification.active {
  transform: translateY(0);
  opacity: 1;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 280px;
    height: calc(100vh - var(--header-height));
    background: var(--dark-bg-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transition: right var(--transition-normal);
  }

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

  .mobile-toggle {
    display: block;
  }

  .split-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}