/* MDJ TRADING LIMITED — Design Tokens & Styles */
/* Art direction: Authoritative commodities trading — earth tones, deep greens, warm browns */

:root {
  /* Type Scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;

  /* Fonts */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Switzer', 'Helvetica Neue', sans-serif;
}

/* Light Mode (default) */
:root,
[data-theme='light'] {
  --color-bg: #FAF8F5;
  --color-surface: #F5F2ED;
  --color-surface-2: #EDE9E3;
  --color-border: #D4CFC6;
  --color-divider: #E0DBD3;
  --color-text: #1A1814;
  --color-text-muted: #6B6560;
  --color-text-faint: #A39E96;
  --color-text-inverse: #FAF8F5;
  --color-primary: #2D5A27;
  --color-primary-hover: #1E3E1A;
  --color-primary-light: #E8F0E7;
  --color-accent: #8B5E34;
  --color-accent-hover: #6E4A29;
  --color-accent-light: #F3ECDF;
  --shadow-sm: 0 1px 2px oklch(0.2 0.02 60 / 0.06);
  --shadow-md: 0 4px 12px oklch(0.2 0.02 60 / 0.08);
  --shadow-lg: 0 12px 32px oklch(0.2 0.02 60 / 0.12);
}

/* Dark Mode */
[data-theme='dark'] {
  --color-bg: #141210;
  --color-surface: #1C1A17;
  --color-surface-2: #242119;
  --color-border: #3A3630;
  --color-divider: #2A2722;
  --color-text: #D8D2C8;
  --color-text-muted: #8A847C;
  --color-text-faint: #5E5950;
  --color-text-inverse: #141210;
  --color-primary: #5FAF56;
  --color-primary-hover: #4C9244;
  --color-primary-light: #1E2A1D;
  --color-accent: #C4935E;
  --color-accent-hover: #A87940;
  --color-accent-light: #2A2218;
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #141210;
    --color-surface: #1C1A17;
    --color-surface-2: #242119;
    --color-border: #3A3630;
    --color-divider: #2A2722;
    --color-text: #D8D2C8;
    --color-text-muted: #8A847C;
    --color-text-faint: #5E5950;
    --color-text-inverse: #141210;
    --color-primary: #5FAF56;
    --color-primary-hover: #4C9244;
    --color-primary-light: #1E2A1D;
    --color-accent: #C4935E;
    --color-accent-hover: #A87940;
    --color-accent-light: #2A2218;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
    --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
  }
}

/* ==========================================
   LAYOUT
   ========================================== */

.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

/* ==========================================
   HEADER / NAV
   ========================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.08);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .header-inner {
    padding-inline: var(--space-8);
  }
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.logo-mark {
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.logo-text span {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.nav-desktop {
  display: none;
}

@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
    align-items: center;
    gap: var(--space-8);
  }
}

.nav-desktop a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: relative;
}

.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-desktop a:hover {
  color: var(--color-text);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}

.theme-toggle:hover {
  background: var(--color-surface);
  color: var(--color-text);
}

/* Mobile menu */
.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text);
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 100;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  padding: var(--space-8) var(--space-6);
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav.open {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--space-12);
}

.mobile-nav-close {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

.mobile-nav a {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  text-decoration: none;
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}

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

/* ==========================================
   HERO
   ========================================== */

.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

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

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    oklch(0.1 0.02 60 / 0.95) 0%,
    oklch(0.1 0.02 60 / 0.6) 40%,
    oklch(0.1 0.02 60 / 0.3) 70%,
    oklch(0.1 0.02 60 / 0.15) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-12) var(--space-4) var(--space-16);
  width: 100%;
}

@media (min-width: 768px) {
  .hero-content {
    padding: var(--space-16) var(--space-8) var(--space-20);
  }
}

.hero-eyebrow {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #C4935E;
  margin-bottom: var(--space-4);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: #FAF8F5;
  max-width: 14ch;
  margin-bottom: var(--space-6);
}

.hero-desc {
  font-size: var(--text-base);
  color: rgba(250, 248, 245, 0.75);
  max-width: 48ch;
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #FAF8F5;
  background: var(--color-primary);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  text-decoration: none;
}

[data-theme='dark'] .hero-cta {
  background: #2D5A27;
  color: #FAF8F5;
}

.hero-cta:hover {
  background: var(--color-primary-hover);
}

.hero-cta svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-cta:hover svg {
  transform: translateX(4px);
}

/* ==========================================
   SECTIONS — General
   ========================================== */

.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

.section-eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  line-height: 1.7;
}

/* ==========================================
   ABOUT
   ========================================== */

.about-grid {
  display: grid;
  gap: var(--space-12);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}

.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: var(--space-1);
}

/* ==========================================
   COMMODITIES
   ========================================== */

.commodities-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 640px) {
  .commodities-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .commodities-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.commodity-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.commodity-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.commodity-card-img {
  aspect-ratio: 16/10;
  overflow: hidden;
}

.commodity-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.commodity-card:hover .commodity-card-img img {
  transform: scale(1.04);
}

.commodity-card-body {
  padding: var(--space-5) var(--space-6);
}

.commodity-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.commodity-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================
   EQUIPMENT SECTION
   ========================================== */

.equipment-layout {
  display: grid;
  gap: var(--space-12);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .equipment-layout {
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
  }
}

.equipment-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/10;
}

.equipment-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.equipment-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.equipment-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.equipment-list .check-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  margin-top: 3px;
}

/* ==========================================
   LOGISTICS / GLOBAL REACH
   ========================================== */

.logistics-banner {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-top: var(--space-10);
  min-height: 420px;
  display: flex;
  align-items: flex-end;
}

.logistics-banner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.logistics-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    oklch(0.1 0.02 60 / 0.9) 0%,
    oklch(0.1 0.02 60 / 0.4) 60%,
    oklch(0.1 0.02 60 / 0.15) 100%
  );
}

.logistics-banner-content {
  position: relative;
  z-index: 1;
  padding: var(--space-8);
  max-width: 560px;
}

.logistics-banner-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: #FAF8F5;
  margin-bottom: var(--space-3);
}

.logistics-banner-content p {
  font-size: var(--text-base);
  color: rgba(250, 248, 245, 0.75);
  line-height: 1.7;
}

/* ==========================================
   CONTACT
   ========================================== */

.contact-grid {
  display: grid;
  gap: var(--space-10);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-info h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-6);
}

.contact-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  margin-bottom: var(--space-5);
}

.contact-item-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  margin-top: 3px;
}

.contact-item-text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.contact-item-text strong {
  display: block;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.contact-item-text a {
  color: var(--color-primary);
  text-decoration: none;
}

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

.contact-form {
  background: var(--color-surface);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px oklch(from var(--color-primary) l c h / 0.15);
}

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

.form-submit {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-inverse);
  background: var(--color-primary);
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-sm);
  width: 100%;
  justify-content: center;
}

.form-submit:hover {
  background: var(--color-primary-hover);
}

/* ==========================================
   FOOTER
   ========================================== */

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12);
}

.footer-inner {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 36ch;
  line-height: 1.6;
  margin-top: var(--space-4);
}

.footer-col h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

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

.footer-col li {
  margin-bottom: var(--space-2);
}

.footer-col a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--color-text);
}

.footer-bottom {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ==========================================
   ANIMATIONS
   ========================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Staggered delays */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ==========================================
   UTILITIES
   ========================================== */

.bg-surface { background: var(--color-surface); }
.text-center { text-align: center; }