/* ==========================================================================
   SYMATRA CONSULTING — Design System
   Motif: engineering submittal sheets — title blocks, sheet numbers, revision
   tags, hairline borders, registration ticks. Grounded in the actual product
   (control drawings, points schedules) rather than decorative blueprint tropes.
   ========================================================================== */

:root {
  /* Color */
  --ink: #14212F;
  --ink-soft: #46586B;
  --ink-faint: #7C8A98;
  --paper: #F1F3EF;
  --paper-raised: #FAFBF8;
  --line: #D2D8CF;
  --line-strong: #AEB8AC;
  --copper: #AD6A2B;
  --copper-dark: #8A5320;
  --copper-tint: #EFDCC3;
  --deep: #101B27;
  --deep-line: #26374A;
  --verified: #3E7A5B;

  /* Type */
  --font-display: "Space Grotesk", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  /* Layout */
  --max: 1200px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 2px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.08;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); font-weight: 600; }
h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); font-weight: 600; }
h3 { font-size: 1.25rem; font-weight: 600; }

p { margin: 0 0 1em; color: var(--ink-soft); }
a { color: var(--copper-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { max-width: 100%; display: block; }

:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

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

/* ---- Sheet label / drawing-tag utility (the signature motif) ---- */
.sheet-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper-dark);
  border: 1px solid var(--line-strong);
  padding: 5px 10px;
  background: var(--paper-raised);
}
.sheet-tag .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--copper);
  flex-shrink: 0;
}

/* Registration-mark corner ticks, used to frame key panels */
.ticked {
  position: relative;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
}
.ticked::before, .ticked::after,
.ticked .tick-br, .ticked .tick-bl {
  content: "";
  position: absolute;
  width: 16px; height: 16px;
  pointer-events: none;
}
.ticked::before { top: -1px; left: -1px; border-top: 2px solid var(--ink); border-left: 2px solid var(--ink); }
.ticked::after { top: -1px; right: -1px; border-top: 2px solid var(--ink); border-right: 2px solid var(--ink); }
.ticked .tick-bl { bottom: -1px; left: -1px; border-bottom: 2px solid var(--ink); border-left: 2px solid var(--ink); }
.ticked .tick-br { bottom: -1px; right: -1px; border-bottom: 2px solid var(--ink); border-right: 2px solid var(--ink); }

/* ---- Header / Nav ---- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(241, 243, 239, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--gutter);
  max-width: var(--max); margin: 0 auto;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  display: flex; align-items: baseline; gap: 8px;
}
.logo span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 400;
  color: var(--copper-dark);
  letter-spacing: 0.1em;
  border-left: 1px solid var(--line-strong);
  padding-left: 8px;
}
.nav-links { display: flex; gap: 32px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--ink-soft);
  font-size: 0.94rem;
  font-weight: 500;
}
.nav-links a.active, .nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-cta {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--paper-raised);
  background: var(--ink);
  padding: 10px 18px;
  border: 1px solid var(--ink);
  transition: background 0.15s ease, color 0.15s ease;
}
.nav-cta:hover { background: var(--copper-dark); border-color: var(--copper-dark); text-decoration: none; color: #fff; }

.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border: 1px solid var(--line-strong);
    background: var(--paper-raised); cursor: pointer;
  }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--paper-raised); border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter) 20px;
  }
  .nav-links.open a { padding: 12px 0; border-bottom: 1px solid var(--line); }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-body); font-weight: 600; font-size: 0.95rem;
  padding: 13px 24px;
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
}
.btn-primary { background: var(--ink); color: var(--paper-raised); }
.btn-primary:hover { background: var(--copper-dark); border-color: var(--copper-dark); color: #fff; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--ink); text-decoration: none; }
.btn:active { transform: translateY(1px); }

/* ---- Hero ---- */
.hero {
  padding: 56px var(--gutter) 40px;
  max-width: var(--max); margin: 0 auto;
}
.hero-panel {
  position: relative;
  padding: clamp(40px, 6vw, 76px) clamp(24px, 6vw, 64px);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 34px 34px;
  background-color: var(--paper-raised);
  overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }

.hero-eyebrow { margin-bottom: 22px; }
.hero h1 { max-width: 620px; }
.hero-sub { max-width: 480px; font-size: 1.08rem; margin-top: 18px; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 28px; margin-top: 40px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-soft);
}
.hero-stats strong { display: block; font-family: var(--font-display); font-size: 1.5rem; color: var(--ink); font-weight: 600; }

/* ---- Sections ---- */
section { padding: 72px 0; }
.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head .sheet-tag { margin-bottom: 16px; }
.section-alt { background: var(--paper-raised); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-dark { background: var(--deep); color: var(--paper); }
.section-dark p { color: #B9C4CE; }
.section-dark h2, .section-dark h3 { color: var(--paper); }

/* ---- Service / feature grid ---- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (max-width: 760px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--paper-raised);
  padding: 32px 28px;
  display: flex; flex-direction: column;
}
.card .tag-num { font-family: var(--font-mono); font-size: 0.72rem; color: var(--copper-dark); letter-spacing: 0.08em; margin-bottom: 14px; }
.card h3 { margin-bottom: 10px; }
.card p { font-size: 0.95rem; margin-bottom: 0; flex-grow: 1; }
.card .card-meta {
  margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em;
}

/* ---- Process steps ---- */
.process-list { border-top: 1px solid var(--line); }
.process-step {
  display: grid; grid-template-columns: 90px 1fr; gap: 24px;
  padding: 28px 0; border-bottom: 1px solid var(--line);
  align-items: start;
}
.process-step .step-num { font-family: var(--font-mono); font-size: 0.85rem; color: var(--copper-dark); padding-top: 4px; }
@media (max-width: 600px) { .process-step { grid-template-columns: 50px 1fr; } }

/* ---- Portfolio ---- */
.portfolio-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
@media (max-width: 760px) { .portfolio-grid { grid-template-columns: 1fr; } }
.portfolio-item { background: var(--paper-raised); border: 1px solid var(--line); }
.portfolio-thumb { border-bottom: 1px solid var(--line); background: var(--paper); aspect-ratio: 16/10; overflow: hidden; }
.portfolio-thumb svg { width: 100%; height: 100%; }
.portfolio-body { padding: 20px 22px; }
.portfolio-body .sheet-tag { margin-bottom: 12px; }
.portfolio-body h3 { font-size: 1.05rem; margin-bottom: 6px; }
.portfolio-body p { font-size: 0.92rem; margin-bottom: 0; }

.external-links { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 36px; }
.link-card {
  flex: 1; min-width: 240px;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  padding: 22px;
  display: flex; flex-direction: column; gap: 8px;
}
.link-card h4 { margin: 0; font-family: var(--font-display); font-size: 1.05rem; }
.link-card p { font-size: 0.88rem; margin: 0; }
.link-card a.btn { align-self: flex-start; margin-top: 6px; padding: 9px 16px; font-size: 0.85rem; }

/* ---- Trust strip ---- */
.trust-strip { display: flex; flex-wrap: wrap; gap: 40px; justify-content: space-between; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 28px 0; }
.trust-item { display: flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-soft); letter-spacing: 0.02em; }
.trust-item .dot { width: 6px; height: 6px; background: var(--verified); border-radius: 50%; flex-shrink: 0; }

/* ---- CTA band ---- */
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h2 { margin-bottom: 6px; }

/* ---- Vision/Mission split ---- */
.vm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (max-width: 760px) { .vm-grid { grid-template-columns: 1fr; } }
.vm-panel { background: var(--paper-raised); padding: 40px 36px; }
.vm-panel .sheet-tag { margin-bottom: 18px; }

/* ---- Values list ---- */
.values-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 40px; margin-top: 8px; }
@media (max-width: 700px) { .values-list { grid-template-columns: 1fr; } }
.value-item { border-left: 2px solid var(--copper); padding-left: 16px; }
.value-item h4 { font-family: var(--font-display); font-size: 1.05rem; margin-bottom: 6px; }
.value-item p { font-size: 0.92rem; margin: 0; }

/* ---- Contact form ---- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-family: var(--font-mono); font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); margin-bottom: 8px;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 14px; font-family: var(--font-body); font-size: 0.98rem;
  border: 1px solid var(--line-strong); background: var(--paper-raised); color: var(--ink);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: 2px solid var(--copper); outline-offset: 1px; border-color: var(--copper);
}
.form-group textarea { min-height: 130px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 500px) { .form-row { grid-template-columns: 1fr; } }
.hp-field { position: absolute; left: -9999px; opacity: 0; }
#form-status { margin-top: 16px; font-size: 0.92rem; font-family: var(--font-mono); }
#form-status[data-state="success"] { color: var(--verified); }
#form-status[data-state="error"] { color: #A1402A; }

.contact-info-block { border: 1px solid var(--line); background: var(--paper-raised); padding: 30px; }
.contact-info-block .sheet-tag { margin-bottom: 18px; }
.contact-info-line { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 0.94rem; }
.contact-info-line:last-child { border-bottom: none; }
.contact-info-line span:first-child { color: var(--ink-faint); font-family: var(--font-mono); font-size: 0.78rem; text-transform: uppercase; }

/* ---- Footer ---- */
.site-footer { background: var(--deep); color: #B9C4CE; padding: 56px 0 28px; }
.site-footer a { color: #D9E1E8; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 40px; border-bottom: 1px solid var(--deep-line); }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { color: #fff; font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 16px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: 0.9rem; }
.footer-logo { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; color: #fff; margin-bottom: 10px; }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 24px; font-size: 0.8rem; color: #7C8EA0; flex-wrap: wrap; gap: 10px; font-family: var(--font-mono); }

/* ---- Reveal on scroll ---- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---- Page intro banner (non-home pages) ---- */
.page-intro { padding: 48px 0 8px; }
.page-intro .sheet-tag { margin-bottom: 18px; }
.page-intro h1 { font-size: clamp(2rem, 4vw, 2.8rem); }
.page-intro p { max-width: 640px; font-size: 1.05rem; }