@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;0,600;1,400&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --green-deep:   #1e3d2f;
  --green-mid:    #2d5a40;
  --green-light:  #3d7a56;
  --off-white:    #f5f2ec;
  --cream:        #ede9e0;
  --charcoal:     #1c1c1c;
  --text:         #2c2c2c;
  --text-muted:   #5f6b5e;
  --amber:        #b8943a;
  --amber-light:  #d4aa4a;
  --border:       #d4cfc6;
  --border-light: #e8e4dc;
  --white:        #ffffff;

  --font-serif: 'Lora', Georgia, serif;
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  --max-w: 1140px;
  --radius: 4px;
  --radius-lg: 8px;

  --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--off-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ── TYPOGRAPHY ── */

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.25;
  color: var(--charcoal);
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 500; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 500; }
h3 { font-size: clamp(1.1rem, 2vw, 1.45rem); font-weight: 500; }
h4 { font-size: 1.05rem; font-weight: 600; font-family: var(--font-sans); letter-spacing: 0.02em; }

p { margin-bottom: var(--space-sm); }
p:last-child { margin-bottom: 0; }

.label {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.label-amber { color: var(--amber); }

/* ── LAYOUT ── */

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section { padding: var(--space-2xl) 0; }
.section-sm { padding: var(--space-xl) 0; }
.section-lg { padding: calc(var(--space-2xl) * 1.5) 0; }

.section-header {
  max-width: 680px;
  margin-bottom: var(--space-xl);
}

.section-header .label { margin-bottom: var(--space-xs); }
.section-header h2 { margin-bottom: var(--space-sm); }
.section-header p { color: var(--text-muted); font-size: 1.05rem; }

/* ── NAV ── */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--green-deep);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.nav-logo-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--off-white);
  letter-spacing: 0.01em;
}

.nav-logo-sub {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(245,242,236,0.5);
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: rgba(245,242,236,0.8);
  transition: color var(--transition);
  letter-spacing: 0.01em;
}

.nav-links a:hover,
.nav-links a.active { color: var(--off-white); }

.nav-cta {
  background: var(--amber);
  color: var(--charcoal) !important;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius);
  font-weight: 600 !important;
  font-size: 0.82rem !important;
  letter-spacing: 0.02em;
  transition: background var(--transition) !important;
}

.nav-cta:hover { background: var(--amber-light) !important; }

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--off-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ── BUTTONS ── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

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

.btn-primary:hover { background: var(--amber-light); }

.btn-outline {
  background: transparent;
  color: var(--off-white);
  border: 1.5px solid rgba(245,242,236,0.4);
}

.btn-outline:hover {
  border-color: var(--off-white);
  background: rgba(245,242,236,0.06);
}

.btn-outline-dark {
  background: transparent;
  color: var(--green-deep);
  border: 1.5px solid var(--green-deep);
}

.btn-outline-dark:hover { background: var(--green-deep); color: var(--off-white); }

.btn-text {
  padding: 0;
  background: none;
  color: var(--green-mid);
  font-weight: 500;
  font-size: 0.9rem;
}

.btn-text::after { content: ' →'; }
.btn-text:hover { color: var(--green-deep); }

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  margin-top: var(--space-lg);
}

/* ── HERO ── */

.hero {
  background: var(--green-deep);
  color: var(--off-white);
  padding: calc(var(--space-2xl) * 1.2) 0 var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
  opacity: 1;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero .label {
  color: var(--amber);
  margin-bottom: var(--space-sm);
}

.hero h1 {
  color: var(--off-white);
  margin-bottom: var(--space-md);
}

.hero-lead {
  font-size: 1.1rem;
  color: rgba(245,242,236,0.78);
  line-height: 1.7;
  max-width: 580px;
  margin-bottom: 0;
}

/* ── CARDS ── */

.card-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: border-color var(--transition), transform var(--transition);
}

.card:hover {
  border-color: var(--border);
  transform: translateY(-2px);
}

.card-icon {
  width: 44px;
  height: 44px;
  background: var(--green-deep);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.card-icon svg { color: var(--off-white); }

.card .label { margin-bottom: var(--space-xs); }
.card h3 { margin-bottom: var(--space-xs); }
.card p { color: var(--text-muted); font-size: 0.93rem; line-height: 1.65; }

.card-link {
  display: inline-block;
  margin-top: var(--space-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--green-mid);
}

.card-link:hover { color: var(--green-deep); }

/* ── FEATURE BLOCK ── */

.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.feature-block.reverse .feature-text { order: 2; }
.feature-block.reverse .feature-visual { order: 1; }

.feature-text .label { margin-bottom: var(--space-sm); }
.feature-text h2 { margin-bottom: var(--space-md); }
.feature-text p { color: var(--text-muted); font-size: 1rem; line-height: 1.75; }

.feature-visual {
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.feature-visual img { width: 100%; height: 100%; object-fit: cover; }

.placeholder-visual {
  width: 100%;
  height: 340px;
  background: linear-gradient(135deg, var(--cream) 0%, var(--border-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── SPEC TABLE ── */

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.spec-table tr { border-bottom: 1px solid var(--border-light); }
.spec-table tr:last-child { border-bottom: none; }
.spec-table td { padding: 0.75rem 0; vertical-align: top; }
.spec-table td:first-child {
  width: 40%;
  font-weight: 500;
  color: var(--text-muted);
  padding-right: var(--space-md);
}

/* ── SECTION DIVIDERS ── */

.bg-dark { background: var(--green-deep); color: var(--off-white); }
.bg-dark h2, .bg-dark h3 { color: var(--off-white); }
.bg-dark p, .bg-dark .text-muted { color: rgba(245,242,236,0.72); }
.bg-dark .section-header p { color: rgba(245,242,236,0.65); }
.bg-dark .label { color: var(--amber); }
.bg-dark .card {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.1);
}
.bg-dark .card:hover { border-color: rgba(255,255,255,0.2); }
.bg-dark .card h3, .bg-dark .card p { color: var(--off-white); }
.bg-dark .card p { color: rgba(245,242,236,0.65); }

.bg-cream { background: var(--cream); }
.bg-white { background: var(--white); }

/* ── PILL TAGS ── */

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.tag-green { background: rgba(30,61,47,0.08); border-color: rgba(30,61,47,0.2); color: var(--green-deep); }
.tag-amber { background: rgba(184,148,58,0.12); border-color: rgba(184,148,58,0.3); color: #8a6c20; }

.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: var(--space-sm); }

/* ── JOURNAL / RESEARCH ENTRIES ── */

.entry-list { display: flex; flex-direction: column; gap: var(--space-md); }

.entry {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-light);
}

.entry:last-child { border-bottom: none; }

.entry-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.entry h3 { margin-bottom: 0.3rem; font-size: 1.1rem; }
.entry h3 a:hover { color: var(--green-mid); }
.entry p { color: var(--text-muted); font-size: 0.9rem; }

.entry-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
  margin-top: 0.25rem;
}

/* ── PAGE HERO (inner pages) ── */

.page-hero {
  background: var(--green-deep);
  padding: var(--space-xl) 0;
  color: var(--off-white);
}

.page-hero .label {
  color: var(--amber);
  margin-bottom: var(--space-sm);
}

.page-hero h1 {
  color: var(--off-white);
  margin-bottom: var(--space-sm);
  max-width: 700px;
}

.page-hero p {
  color: rgba(245,242,236,0.72);
  font-size: 1.05rem;
  max-width: 600px;
  margin-bottom: 0;
}

/* ── BREADCRUMB ── */

.breadcrumb {
  font-size: 0.8rem;
  color: rgba(245,242,236,0.45);
  margin-bottom: var(--space-sm);
}

.breadcrumb a { color: rgba(245,242,236,0.55); }
.breadcrumb a:hover { color: rgba(245,242,236,0.85); }
.breadcrumb span { margin: 0 0.4rem; }

/* ── FORM ── */

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

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--text);
}

input, textarea, select {
  width: 100%;
  padding: 0.65rem 0.9rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text);
  transition: border-color var(--transition);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--green-mid);
  box-shadow: 0 0 0 3px rgba(45,90,64,0.1);
}

textarea { min-height: 140px; resize: vertical; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }

/* ── FOOTER ── */

.site-footer {
  background: var(--charcoal);
  color: rgba(245,242,236,0.65);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand .nav-logo-name { font-size: 1.15rem; margin-bottom: var(--space-xs); }
.footer-brand .nav-logo-sub { font-size: 0.65rem; }
.footer-brand p {
  margin-top: var(--space-sm);
  font-size: 0.85rem;
  line-height: 1.65;
  max-width: 280px;
}

.footer-col h4 {
  color: var(--off-white);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.55rem; }
.footer-col a { font-size: 0.87rem; color: rgba(245,242,236,0.6); transition: color var(--transition); }
.footer-col a:hover { color: var(--off-white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
}

.footer-bottom a { color: rgba(245,242,236,0.45); }
.footer-bottom a:hover { color: rgba(245,242,236,0.75); }

/* ── STATS BAR ── */

.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.stat-item {
  background: var(--white);
  padding: var(--space-md) var(--space-lg);
  text-align: center;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 500;
  color: var(--green-deep);
  line-height: 1;
  display: block;
  margin-bottom: 0.3rem;
}

.stat-label { font-size: 0.8rem; color: var(--text-muted); }

/* ── SPECTROGRAM DECORATION ── */

.spectrogram-bar {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 40px;
}

.spectrogram-bar span {
  display: block;
  width: 3px;
  background: var(--amber);
  border-radius: 2px 2px 0 0;
  opacity: 0.6;
}

/* ── UTILS ── */

.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.divider {
  border: none;
  border-top: 1px solid var(--border-light);
  margin: var(--space-xl) 0;
}

/* ── RESPONSIVE ── */

@media (max-width: 900px) {
  .card-grid-3 { grid-template-columns: 1fr 1fr; }
  .feature-block { grid-template-columns: 1fr; gap: var(--space-lg); }
  .feature-block.reverse .feature-text { order: 1; }
  .feature-block.reverse .feature-visual { order: 2; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .nav-links { display: none; flex-direction: column; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 64px;
    left: 0; right: 0;
    background: var(--green-deep);
    padding: var(--space-md);
    border-top: 1px solid rgba(255,255,255,0.08);
    gap: var(--space-sm);
    z-index: 99;
  }
  .nav-burger { display: flex; }
  .card-grid-3, .card-grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .entry { grid-template-columns: 1fr; }
  .site-nav { position: relative; }
}