/* =========================================================
   TMH Automation Ltd — Marketing Site
   Palette: light grey base, charcoal + logo-green accent
   Type: IBM Plex Mono (headings/labels) + IBM Plex Serif (body)
   ========================================================= */

:root {
  --bg-0: #eef0ee;
  --bg-1: #f4f6f4;
  --bg-2: #ffffff;
  --bg-3: #e6e9e5;
  --line: #d4d8d2;
  --line-soft: #e2e5e1;

  --text-0: #1b201d;
  --text-1: #454a46;
  --text-2: #767b77;

  --accent: #1f7a45;
  --accent-hover: #186238;
  --accent-text: #ffffff;

  --accent-2: #3f6b52;
  --accent-2-dim: #a7c4b1;

  --danger: #b3352c;
  --danger-bg: #fbeae8;

  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
  --font-serif: 'IBM Plex Serif', Georgia, 'Times New Roman', serif;

  --container: 1180px;
  --radius: 8px;
  --radius-sm: 4px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--text-1);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  color: var(--text-0);
  font-family: var(--font-mono);
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0; }

ul { list-style: none; margin: 0; padding: 0; }

/* ===== Wordmark ===== */
.wordmark {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}
.wordmark.small { opacity: 0.85; }

.logo-img {
  display: block;
  height: 90px;
  width: auto;
}
.logo-img-sm { height: 66px; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(238, 240, 238, 0.92);
  border-bottom: 1px solid var(--line-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.site-nav a {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text-1);
  transition: color 0.1s linear;
}

.site-nav a:hover { color: var(--accent-2); }

.nav-cta {
  padding: 7px 14px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--accent) !important;
}
.nav-cta:hover {
  background: var(--accent);
  color: var(--accent-text) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 16px;
  margin: 0 auto;
  background: var(--text-1);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 72px 0;
  overflow: hidden;
  background: var(--bg-0);
  border-bottom: 1px solid var(--line-soft);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 90% 70% at 20% 0%, black 30%, transparent 90%);
  opacity: 0.7;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 48px;
  align-items: start;
}

.hero-main {
  padding: 24px 0;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(2rem, 4.4vw, 3.1rem);
  line-height: 1.06;
  margin-bottom: 22px;
}

.hero-lede {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 1.7vw, 1.2rem);
  color: var(--text-1);
  max-width: 540px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.08s linear, color 0.08s linear, border-color 0.08s linear;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { background: var(--accent); }

.btn-ghost {
  border-color: var(--line);
  color: var(--text-0);
}
.btn-ghost:hover { border-color: var(--accent-2); color: var(--accent-2); }

/* ---- Spec panel (hero title block) ---- */
.spec-panel {
  position: relative;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 24px;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.spec-panel-head {
  display: flex;
  justify-content: space-between;
  padding: 14px 22px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--text-2);
}

.spec-list {
  margin: 0;
  padding: 6px 22px 22px;
}

.spec-row-item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-mono);
}

.spec-row-item dt {
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-2);
}

.spec-row-item dd {
  margin: 0;
  font-size: 13px;
  color: var(--text-0);
  text-align: right;
}

.spec-row-status dd {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ===== Section shared ===== */
section { padding: 88px 0; border-bottom: 1px solid var(--line-soft); }
section:last-of-type { border-bottom: none; }

.section-title {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-size: clamp(1.4rem, 2.6vw, 1.7rem);
  margin-bottom: 14px;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
}

.section-lede {
  font-family: var(--font-serif);
  color: var(--text-2);
  max-width: 620px;
  font-size: 1.02rem;
  margin-bottom: 48px;
}

.spec-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.spec-heading-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-2);
}

/* ===== Services (spec table) ===== */
.services { background: var(--bg-0); }

.spec-table {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-0);
}

.spec-table-row {
  display: grid;
  grid-template-columns: 64px 260px 1fr;
  gap: 24px;
  padding: 22px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-1);
  transition: background 0.08s linear, border-left-color 0.08s linear;
  border-left: 3px solid transparent;
}

.spec-table-row:last-child { border-bottom: none; }

.spec-table-row:not(.spec-table-head):hover {
  background: var(--bg-2);
  border-left-color: var(--accent);
}

.spec-table-head {
  background: var(--bg-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
  padding: 14px 24px;
}

.spec-table-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-2);
  align-self: start;
  padding-top: 2px;
}

.spec-table-row h3 {
  font-size: 1rem;
  line-height: 1.35;
  align-self: start;
}

.spec-table-row p {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--text-2);
}

/* ===== Expertise ===== */
.expertise { background: var(--bg-1); }

.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.platform-card {
  background: var(--bg-2);
  border-top: 2px solid var(--accent-2);
  padding: 30px 30px 26px;
}

.platform-card h3 {
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}

.tag-list li {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--text-1);
  padding: 10px 0;
  border-top: 1px solid var(--line-soft);
}
.tag-list li:first-child { border-top: none; }

.expertise-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
  margin-top: 44px;
  padding-top: 44px;
  border-top: 1px solid var(--line-soft);
}

.strip-item h4 {
  font-size: 0.92rem;
  color: var(--accent);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.strip-item p {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--text-2);
}

/* ===== PackML ===== */
.packml { background: var(--bg-0); }

.packml-inner {
  max-width: 760px;
  margin-bottom: 48px;
}

.packml-para {
  font-family: var(--font-serif);
  color: var(--text-1);
  font-size: 0.98rem;
  margin-bottom: 30px;
}

.packml-benefits {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.packml-benefits li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.benefit-mark {
  flex-shrink: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
}

.packml-benefits p {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--text-2);
}

.packml-diagram {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.diagram-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
}

.diagram-label-alt {
  margin-top: 14px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.state-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.state-chip {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-0);
  border: 1px solid var(--accent-2-dim);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  white-space: nowrap;
}

.state-arrow {
  color: var(--accent);
  font-size: 13px;
}

.state-flow-alt { gap: 8px; }

.state-chip-alt {
  color: var(--text-2);
  border-color: var(--line);
}

/* ---- PackML interactive simulator ---- */
.packml-sim {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px 28px;
}

.sim-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 22px;
}

.sim-reset {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--text-2);
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  cursor: pointer;
  transition: border-color 0.08s linear, color 0.08s linear;
}
.sim-reset:hover { border-color: var(--accent-2); color: var(--accent-2); }

.sim-body {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 36px;
  align-items: start;
}

.sim-current {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.sim-current-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-2);
}

.sim-current-state {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text-0);
  border: 2px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  background: var(--bg-1);
}

.sim-current-state.is-acting {
  border-style: dashed;
  border-color: var(--accent-2);
  animation: sim-pulse 1s ease-in-out infinite;
}

@keyframes sim-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

.sim-commands {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
  min-height: 38px;
}

.sim-btn {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent-text);
  background: var(--accent);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  cursor: pointer;
  transition: background 0.08s linear;
}
.sim-btn:hover { background: var(--accent-hover); }

.sim-btn.is-danger {
  color: var(--danger);
  background: var(--danger-bg);
}
.sim-btn.is-danger:hover { background: #f6d9d6; }

.sim-btn.is-waiting-note {
  color: var(--text-2);
  background: none;
  border-color: var(--line);
  cursor: default;
  font-weight: 500;
}

.sim-log-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sim-log-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-2);
}

.sim-log {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--text-1);
  background: var(--bg-1);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  height: 160px;
  overflow-y: auto;
}

.sim-log-line { white-space: nowrap; }
.sim-log-line .t { color: var(--text-2); margin-right: 8px; }
.sim-log-line .arrow { color: var(--accent); margin: 0 6px; }

.sim-map {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sim-group-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 10px;
}

.sim-group-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sim-chip {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  white-space: nowrap;
  transition: background 0.12s linear, border-color 0.12s linear, color 0.12s linear;
}

.sim-chip.is-acting-type { border-style: dashed; }

.sim-chip.is-active {
  color: var(--accent-text);
  background: var(--accent);
  border-color: var(--accent);
}

.sim-chip.is-active.is-acting-type {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.sim-legend {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-2);
}

.sim-legend-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  margin-right: 4px;
  vertical-align: middle;
}
.sim-legend-dot-waiting { background: var(--accent); }
.sim-legend-dot-acting { background: var(--accent-2); border: 1px dashed var(--accent-2); }

/* ===== Sectors ===== */
.sectors { background: var(--bg-0); }

.sector-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.sector-card {
  padding: 28px 24px;
  background: var(--bg-1);
}

.sector-card h3 {
  font-size: 1rem;
  margin-bottom: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.sector-card p {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--text-2);
  padding-top: 14px;
}

/* ===== Why TMH ===== */
.why { background: var(--bg-1); }

.why-copy { max-width: 760px; }

.why-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
  margin-top: 40px;
}

.why-list li {
  display: flex;
  gap: 22px;
  align-items: flex-start;
}

.why-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
}

.why-list h4 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.why-list p {
  font-family: var(--font-serif);
  font-size: 0.94rem;
  color: var(--text-2);
}

/* ===== Contact ===== */
.contact { background: var(--bg-0); }

.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 60px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-row label {
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-2);
  font-family: var(--font-mono);
}

.form-row input,
.form-row textarea {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text-0);
  padding: 12px 14px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  resize: vertical;
}

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

.contact-form .btn { align-self: flex-start; margin-top: 6px; }

.form-note {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-2);
}

.contact-direct {
  border-left: 1px solid var(--line);
  padding-left: 40px;
}

.contact-direct h3 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-2);
  margin-bottom: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.contact-email {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 18px;
  word-break: break-all;
}
.contact-email:hover { color: var(--accent-hover); }

.contact-note {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--text-2);
  margin-bottom: 28px;
}

.contact-facts {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-facts > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
}
.contact-facts > div:first-child { border-top: none; padding-top: 0; }

.contact-facts dt {
  font-size: 11.5px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-2);
}

.contact-facts dd {
  margin: 0;
  font-size: 13px;
  color: var(--text-0);
  text-align: right;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-1);
  padding: 20px 0;
  font-family: var(--font-mono);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-inner p {
  font-size: 11.5px;
  color: var(--text-2);
}

.footer-doc-id {
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--text-2);
  opacity: 0.6;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-main { padding: 40px 0 40px; }
  .spec-panel { border-left: none; border-top: 1px solid var(--line); }
  .spec-table-row { grid-template-columns: 40px 1fr; }
  .spec-table-row p { grid-column: 1 / -1; }
  .spec-table-head span:nth-child(3) { display: none; }
  .sim-body { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; }
  .contact-direct {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--line);
    padding-top: 32px;
  }
}

@media (max-width: 720px) {
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-1);
    border-bottom: 1px solid var(--line-soft);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 28px 28px;
    gap: 18px;
    display: none;
  }
  .site-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-cta { align-self: flex-start; }

  section { padding: 60px 0; }
}

@media (max-width: 480px) {
  .container { padding: 0 20px; }
  .why-list li { flex-direction: column; gap: 12px; }
  .spec-table-row { padding: 18px 16px; }
}