/* ═══════════════════════════════════════════════════════════
   PicoTera Systems — style.css
   Shared across all pages. Load this file first.

   Fonts:  DM Serif Display (headings), DM Sans (body), JetBrains Mono (tech)
   Theme:  Amber gold on deep charcoal — Industrial Precision
   ═══════════════════════════════════════════════════════════ */

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

/* ── DESIGN TOKENS ── */
:root {
  --bg:           #070a0f;
  --surface:      #0c1219;
  --surface2:     #121a26;
  --surface3:     #1a2436;
  --text:         #ccd8e4;
  --text-soft:    #607888;
  --amber:        #f0a820;
  --amber-light:  #f8c860;
  --amber-dim:    rgba(240,168,32,0.10);
  --amber-glow:   rgba(240,168,32,0.25);
  --cyan:         #00c4e0;
  --cyan-dim:     rgba(0,196,224,0.08);
  --green:        #22c875;
  --border:       rgba(240,168,32,0.14);
  --border-soft:  rgba(240,168,32,0.06);
  --border-cyan:  rgba(0,196,224,0.12);
  --radius:       2px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
}

/* Blueprint grid texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.016) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.016) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
}

/* ══════════════════════════════════════════════════════
   LIGHT MODE
   ══════════════════════════════════════════════════════ */

[data-theme="light"] {
  --bg:           #f5f1ea;
  --surface:      #ece8df;
  --surface2:     #e2ddd3;
  --surface3:     #d6d0c4;
  --text:         #1c1408;
  --text-soft:    #5a4830;
  --amber:        #a86000;
  --amber-light:  #c07800;
  --amber-dim:    rgba(168,96,0,0.10);
  --amber-glow:   rgba(168,96,0,0.20);
  --cyan:         #006a88;
  --cyan-dim:     rgba(0,106,136,0.08);
  --green:        #1a7a45;
  --border:       rgba(168,96,0,0.16);
  --border-soft:  rgba(168,96,0,0.08);
  --border-cyan:  rgba(0,106,136,0.14);
}

[data-theme="light"] body::before {
  background-image:
    linear-gradient(rgba(0,0,0,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.04) 1px, transparent 1px);
}

[data-theme="light"] nav {
  background: rgba(245,241,234,0.94);
}

[data-theme="light"] .nav-drawer {
  background: rgba(245,241,234,0.99);
}

[data-theme="light"] .partner-logo-wrap img,
[data-theme="light"] .pb-logo img {
  opacity: 0.75;
}

[data-theme="light"] .partner-logo-wrap img:hover,
[data-theme="light"] .pb-logo img:hover {
  opacity: 1;
}

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem 3rem;
  background: rgba(7,10,15,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-soft);
}

.nav-logo {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  line-height: 1;
  gap: 3px;
  flex-shrink: 0;
}

.logo-name {
  font-family: 'DM Sans', sans-serif;
  font-size: 1.25rem;
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--text);
}

.logo-name strong {
  font-weight: 700;
  color: var(--amber);
}

.logo-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.5rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-soft);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover        { color: var(--text); }
.nav-links a.active       { color: var(--amber); }

.btn-nav {
  background: var(--amber) !important;
  color: #060a0f !important;
  padding: 0.5rem 1.25rem !important;
  border-radius: var(--radius);
  font-weight: 600 !important;
  transition: background 0.2s, transform 0.2s !important;
  display: inline-block;
}

.btn-nav:hover {
  background: var(--amber-light) !important;
  transform: translateY(-1px);
}

/* Nav actions wrapper */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  background: none;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--text-soft);
  flex-shrink: 0;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.theme-toggle:hover {
  color: var(--amber);
  border-color: var(--border);
  background: var(--amber-dim);
}

.theme-toggle svg { display: block; pointer-events: none; }

/* Dark (default): show sun, hide moon */
.icon-moon { display: none; }
.icon-sun  { display: block; }

/* Light mode: show moon, hide sun */
[data-theme="light"] .icon-moon { display: block; }
[data-theme="light"] .icon-sun  { display: none; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column; justify-content: center;
  gap: 5px; width: 36px; height: 36px;
  background: none; border: none;
  cursor: pointer; padding: 4px; z-index: 200;
}

.nav-toggle span {
  display: block; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.25s;
  transform-origin: center;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.nav-drawer {
  display: none;
  position: fixed; top: 0; left: 0; right: 0;
  padding: 5rem 1.5rem 2rem;
  background: rgba(7,10,15,0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 150;
  flex-direction: column;
  animation: menuSlide 0.2s ease forwards;
}

.nav-drawer.open { display: flex; }

.nav-drawer a {
  color: var(--text);
  text-decoration: none;
  font-family: 'DM Sans', sans-serif;
  font-weight: 500;
  font-size: 1.1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-soft);
  transition: color 0.2s;
}

.nav-drawer a:last-child { border-bottom: none; }
.nav-drawer a:hover, .nav-drawer a.active { color: var(--amber); }

/* ── HERO BASE ── */
.hero {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 10rem 3rem 5rem;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-soft);
}

.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 500;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.5s 0.1s forwards;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-eyebrow::before {
  content: '';
  display: block;
  width: 28px; height: 1px;
  background: var(--amber);
  flex-shrink: 0;
}

.hero h1 {
  font-family: 'DM Serif Display', serif;
  line-height: 1.05;
  letter-spacing: -0.025em;
  opacity: 0;
  animation: fadeUp 0.6s 0.2s forwards;
}

.hero h1 em {
  font-style: italic;
  color: var(--amber);
}

.hero-sub {
  margin-top:  1.5rem;
  font-size:   1.05rem;
  color:       var(--text-soft);
  font-weight: 300;
  line-height: 1.8;
  opacity:     0;
  animation:   fadeUp 0.6s 0.35s forwards;
}

.hero-ctas {
  display:    flex;
  gap:        1rem;
  margin-top: 2.5rem;
  flex-wrap:  wrap;
  opacity:    0;
  animation:  fadeUp 0.5s 0.5s forwards;
}

/* ── .hero-sub strong links ── */

.hero-sub strong a {
    color:           var(--text);
    font-weight:     500;
    text-decoration: none;
}

/* ── .origin-content strong links ── */

.origin-content p strong a {
    color:           var(--text);
    font-weight:     500;
    text-decoration: none;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-family: 'DM Sans', sans-serif;
  font-weight: 600; font-size: 0.88rem;
  letter-spacing: 0.03em;
  border-radius: var(--radius);
  cursor: pointer; text-decoration: none;
  transition: all 0.2s; border: none;
}

.btn-primary {
  background: var(--amber);
  color: #060a0f;
}

.btn-primary:hover {
  background: var(--amber-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 24px var(--amber-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: rgba(240,168,32,0.4);
  background: var(--amber-dim);
  color: var(--amber);
}

/* ── SECTION LABEL ── */
.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 500;
  margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.75rem;
}

.section-label::before {
  content: '';
  display: block; width: 20px; height: 1px;
  background: var(--amber);
  flex-shrink: 0;
}

.section-title {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.section-title em { font-style: italic; color: var(--amber); }

.section-body {
  color: var(--text-soft);
  line-height: 1.8;
  font-weight: 300;
  max-width: 680px;
}

/* ── CTA STRIP ── */
.cta-strip {
  padding: 5rem 3rem;
  text-align: center;
  background: var(--surface);
  border-top: 1px solid var(--border-soft);
  position: relative;
  overflow: hidden;
}

.cta-strip::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(240,168,32,0.06) 0%, transparent 65%);
  pointer-events: none;
}

.cta-strip h2 {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  max-width: 580px;
  margin: 0 auto 1rem;
  line-height: 1.15;
}

.cta-strip p {
  color: var(--text-soft);
  max-width: 500px;
  margin: 0 auto 2rem;
  font-weight: 300;
  line-height: 1.7;
}

.cta-strip .hero-ctas { justify-content: center; }

/* ── FOOTER ── */
footer {
  padding: 2rem 3rem;
  border-top: 1px solid var(--border-soft);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-soft);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.04em;
}

.footer-links {
  display: flex; gap: 1.75rem;
}

.footer-links a {
  color: var(--text-soft);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ── SCROLL REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view { opacity: 1; transform: none; }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse-amber {
  0%, 100% { opacity: 0.5; }
  50%       { opacity: 1; }
}

/* ── COMPARISON TABLE (shared) ── */
.table-wrap {
  overflow-x: auto;
  margin-top: 2rem;
  border: 1px solid var(--border-soft);
}

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

.comparison-table th {
  background: var(--surface);
  padding: 1rem 1.25rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-soft);
  border-bottom: 1px solid var(--border);
}

.comparison-table th:nth-child(3) {
  color: var(--amber);
  background: rgba(240,168,32,0.04);
  border-left: 1px solid var(--border);
}

.comparison-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-soft);
  color: var(--text-soft);
  vertical-align: top;
}

.comparison-table td:first-child {
  color: var(--text);
  font-weight: 500;
}

.comparison-table td:nth-child(3) {
  color: var(--text);
  background: rgba(240,168,32,0.03);
  border-left: 1px solid var(--border-soft);
}

.comparison-table tr:last-child td { border-bottom: none; }

.comparison-table tr:hover td { background: rgba(255,255,255,0.015); }

.comparison-table tr:hover td:nth-child(3) {
  background: rgba(240,168,32,0.06);
}

/* ── TABLET ── */
@media (max-width: 1024px) {
  nav { padding: 1rem 2rem; }
  .hero { padding: 8rem 2rem 4rem; }
  .cta-strip { padding: 4rem 2rem; }
  footer { padding: 1.75rem 2rem; }
}

/* ── MOBILE ── */
@media (max-width: 767px) {
  nav { padding: 1rem 1.25rem; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .hero { padding: 7rem 1.25rem 3.5rem; }
  .hero-sub { font-size: 0.97rem; }
  .cta-strip { padding: 3.5rem 1.25rem; }
  footer {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    padding: 1.5rem 1.25rem;
  }
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 1rem; }
}