/* ChiosMasticOil — B2B Premium Ingredient Website */
/* Minimal, editorial, pharmaceutical feel */

:root {
  --bg: #f8f8f6;
  --bg-alt: #f0efec;
  --text: #2c2c2a;
  --text-muted: #6b6b68;
  --accent: #8b7355;
  --accent-hover: #7a6348;
  --border: #e5e4e0;
  --white: #ffffff;
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --max-width: 72rem;
  --header-h: 4.5rem;
}

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap');

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(248, 248, 246, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
}

.site-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: 0.02em;
  color: var(--text);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.site-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  transition: color 0.2s;
}

.site-nav a:hover,
.site-nav a.active { color: var(--text); }

.lang-select {
  margin-left: var(--space-md);
  padding: 0.4rem 0.6rem;
  min-width: 7rem;
  font-size: 0.875rem;
  font-family: inherit;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text);
  cursor: pointer;
  -webkit-appearance: menulist;
  appearance: menulist;
}
.lang-select option {
  background: var(--white);
  color: var(--text);
  padding: 0.25rem;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--text);
  font-size: 1.5rem;
  line-height: 1;
}
.nav-toggle:focus { outline: none; }

/* Main */
main {
  min-height: calc(100vh - var(--header-h));
  padding-top: var(--header-h);
}

/* Hero */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--bg);
}

.hero-with-image {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-with-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(248, 248, 246, 0.5);
  z-index: 0;
}

.hero-with-image .hero-headline,
.hero-with-image .hero-subheadline,
.hero-with-image .btn {
  position: relative;
  z-index: 1;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 28rem;
  margin: 0 0 var(--space-md);
}

.hero-subheadline {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 32rem;
  margin: 0 0 var(--space-xl);
  font-weight: 400;
}

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--text);
  color: var(--white);
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

.btn:hover { background: var(--accent); }
.btn-accent { background: var(--accent); }
.btn-accent:hover { background: var(--accent-hover); }

/* Page sections */
.page-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-xl);
}

.page-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-bottom: var(--space-xl);
  display: block;
}

.page-intro {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 42rem;
  margin-bottom: var(--space-xl);
}

.content-block {
  margin-bottom: var(--space-xl);
}

.content-block h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0 0 var(--space-sm);
  color: var(--text);
}

.content-block p {
  margin: 0 0 var(--space-sm);
  color: var(--text-muted);
}

.content-block ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
}

.content-block li { margin-bottom: 0.5rem; }

/* Applications grid */
.applications-grid {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.application-card {
  padding: var(--space-lg);
  background: var(--white);
  border: 1px solid var(--border);
}

.application-card-with-image {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.application-card-image {
  width: 140px;
  min-width: 140px;
  height: 140px;
  object-fit: cover;
  flex-shrink: 0;
}

.application-card-content {
  flex: 1;
  min-width: 0;
}

.application-card h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0 0 var(--space-sm);
  color: var(--text);
}

.application-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-md);
}

.application-card ul {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.application-card li { margin-bottom: 0.35rem; }

/* Contact */
.contact-section {
  max-width: 32rem;
}

.contact-trust {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.contact-email {
  font-weight: 500;
  margin-bottom: var(--space-xl);
}

.contact-form label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--border);
  background: var(--white);
  margin-bottom: var(--space-md);
}

.contact-form textarea {
  min-height: 8rem;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-success {
  padding: var(--space-md);
  background: #e8f5e9;
  color: #2e7d32;
  margin-bottom: var(--space-md);
  display: none;
}

.form-success.visible { display: block; }

/* Scientific note */
.scientific-note {
  max-width: 42rem;
}

.scientific-note p {
  margin-bottom: var(--space-md);
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-lg) var(--space-lg);
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--accent); }

/* Scroll animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
  transition-delay: var(--animate-delay, 0s);
}
.animate-on-scroll.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* Hover effects */
.site-logo { transition: color 0.25s ease, transform 0.25s ease; }
.site-logo:hover { color: var(--accent); transform: translateY(-1px); }
.site-nav a { transition: color 0.2s ease, transform 0.2s ease; }
.site-nav a:hover { transform: translateY(-1px); }
.btn {
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(44, 44, 42, 0.15);
}
.application-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.application-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(44, 44, 42, 0.08);
  border-color: var(--accent);
}
.site-footer a { transition: color 0.2s ease; }
.lang-select { transition: border-color 0.2s ease; }
.lang-select:focus { border-color: var(--accent); outline: none; }
.badge-item {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.badge-item:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 6px 16px rgba(44, 44, 42, 0.1);
}
.stat-item { transition: transform 0.3s ease; }
.stat-item:hover { transform: translateY(-2px); }

/* Back to top */
#back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: var(--text);
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(1rem);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background 0.2s ease;
  box-shadow: 0 4px 12px rgba(44, 44, 42, 0.2);
}
#back-to-top:hover { background: var(--accent); }
#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
#back-to-top svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* Stats section */
.stats-section {
  background: var(--bg-alt);
  padding: var(--space-xl) var(--space-lg);
  margin: 0;
}
.stats-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-xl);
  justify-items: center;
  text-align: center;
}
.stat-item {
  padding: var(--space-md);
}
.stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}
.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  max-width: 10rem;
}

/* Badges section */
.badges-section {
  padding: var(--space-xl) var(--space-lg);
  border-top: 1px solid var(--border);
}
.badges-row {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: center;
  align-items: center;
}
.badge-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: var(--space-md) var(--space-lg);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 100px;
}
.badge-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(139, 115, 85, 0.08);
  border-radius: 6px;
}
.badge-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-transform: uppercase;
}

[dir="rtl"] .site-nav { flex-direction: row-reverse; }
[dir="rtl"] .lang-select { margin-left: 0; margin-right: var(--space-md); }
[dir="rtl"] .application-card-with-image { flex-direction: row-reverse; }

/* Responsive */
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: var(--space-md);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.3s, opacity 0.2s;
  }
  .site-nav.is-open {
    max-height: 80vh;
    overflow-y: auto;
    opacity: 1;
  }
  .site-nav a {
    display: block;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border);
    font-size: 1rem;
  }
  .site-nav a:last-of-type { border-bottom: none; }
  .site-nav .lang-select {
    margin: var(--space-sm) 0 0;
    width: 100%;
    max-width: 12rem;
  }
}

@media (max-width: 768px) {
  .site-header,
  .page-section { padding-left: var(--space-md); padding-right: var(--space-md); }
  .hero { min-height: 75vh; padding: var(--space-xl) var(--space-md); }
  .hero-headline { font-size: clamp(1.5rem, 6vw, 2.5rem); }
  .page-section { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
  .application-card-with-image { flex-direction: column; align-items: stretch; }
  .application-card-image { width: 100%; min-width: 100%; height: 180px; }
  .application-card { padding: var(--space-md); }
  .contact-form input,
  .contact-form textarea { font-size: 16px; }
  .stats-grid { gap: var(--space-lg); }
  .stat-value { font-size: 1.5rem; }
  .badges-row { gap: var(--space-sm); }
  .badge-item { min-width: 80px; padding: var(--space-sm) var(--space-md); }
  .badge-icon { width: 40px; height: 40px; font-size: 1rem; }
  #back-to-top { bottom: 1rem; right: 1rem; width: 2.5rem; height: 2.5rem; }
}