/* =========================================================
   DESIGN TOKENS
   Blueprint palette — a technical drafting sheet, not a
   marketing landing page. Cyan is spent in exactly one
   place: the live diagram.
   ========================================================= */
:root {
  --bp-navy:   #0a1c2e;
  --bp-panel:  #102640;
  --bp-grid:   #234363;
  --bp-paper:  #e9eef0;
  --bp-paper-dim: #a9bcc9;
  --bp-cyan:   #6fe7dd;
  --bp-amber:  #ffb454;

  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --max-width: 1040px;
  --radius: 3px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bp-navy);
  background-image:
    linear-gradient(var(--bp-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bp-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  background-attachment: fixed;
  color: var(--bp-paper);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-color-scheme: light) {
  /* This design is intentionally always-dark, like a blueprint sheet.
     No light variant — the medium is the message. */
}

.sheet {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 64px;
}

a { color: var(--bp-cyan); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }

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

/* =========================================================
   TITLE BLOCK — modelled on a drafting sheet's stamp box
   ========================================================= */
.title-block {
  border-bottom: 1px solid var(--bp-grid);
  padding: 56px 0 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
}

.title-block__main { max-width: 620px; }

.title-block__eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--bp-cyan);
  margin: 0 0 12px;
}

.title-block__name {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(32px, 5vw, 48px);
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

.title-block__role {
  font-size: 18px;
  color: var(--bp-paper-dim);
  margin: 0 0 20px;
}

.title-block__summary {
  margin: 0 0 24px;
  max-width: 540px;
}

.title-block__links {
  display: flex;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.title-block__meta {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 16px 28px;
  align-content: start;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  border: 1px solid var(--bp-grid);
  padding: 16px 20px;
  border-radius: var(--radius);
  height: fit-content;
}

.title-block__meta dt {
  color: var(--bp-paper-dim);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.title-block__meta dd { margin: 0; }

.status-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bp-amber);
  margin-right: 6px;
  box-shadow: 0 0 0 0 rgba(255,180,84,0.6);
  animation: pulse 2.4s infinite;
}

.status-live { color: var(--bp-amber); display: flex; align-items: center; }

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255,180,84,0.5); }
  70% { box-shadow: 0 0 0 6px rgba(255,180,84,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,180,84,0); }
}

@media (prefers-reduced-motion: reduce) {
  .status-dot { animation: none; }
}

/* =========================================================
   PANELS — shared section wrapper
   ========================================================= */
.panel {
  padding: 56px 0;
  border-bottom: 1px solid var(--bp-grid);
}

.panel__label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--bp-paper-dim);
  text-transform: uppercase;
  margin: 0 0 28px;
}

/* =========================================================
   ARCHITECTURE DIAGRAM — the signature element
   ========================================================= */
.diagram-wrap {
  background: var(--bp-panel);
  border: 1px solid var(--bp-grid);
  border-radius: var(--radius);
  padding: 12px;
}

.diagram { width: 100%; height: auto; display: block; }

.diagram__grid rect { fill: none; }
.diagram__grid pattern path { stroke: var(--bp-grid); opacity: 0.5; }

.node rect {
  fill: var(--bp-navy);
  stroke: var(--bp-grid);
  stroke-width: 1.5;
  transition: stroke 0.15s ease, fill 0.15s ease;
}

.node { cursor: pointer; }
.node:hover rect, .node:focus rect { stroke: var(--bp-cyan); fill: #0d3148; }
.node:focus { outline: none; }

.node__title {
  fill: var(--bp-paper);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.node__sub {
  fill: var(--bp-paper-dim);
  font-family: var(--font-mono);
  font-size: 10px;
}

.link {
  fill: none;
  stroke: var(--bp-grid);
  stroke-width: 1.5;
}

.link--main {
  stroke: var(--bp-cyan);
  stroke-dasharray: 5 5;
  animation: flow 1.2s linear infinite;
}

.link--branch {
  stroke: var(--bp-paper-dim);
  stroke-dasharray: 4 5;
  animation: flow 1.6s linear infinite;
}

@keyframes flow {
  to { stroke-dashoffset: -20; }
}

@media (prefers-reduced-motion: reduce) {
  .link--main, .link--branch { animation: none; }
}

.diagram__info {
  font-family: var(--font-mono);
  font-size: 13px;
  margin: 16px 4px 4px;
  min-height: 1.6em;
}

.diagram__info-title { color: var(--bp-cyan); margin-right: 8px; }
.diagram__info-body { color: var(--bp-paper-dim); }

/* =========================================================
   CERTIFICATIONS — grid of repeatable cert cards
   ========================================================= */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.cert-card {
  border: 1px solid var(--bp-grid);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--bp-panel);
  display: flex;
  gap: 24px;
  align-items: flex-start;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

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

.cert-card--pending {
  background: transparent;
  border-style: dashed;
  color: var(--bp-paper-dim);
}
.cert-card--pending:hover { transform: none; border-color: var(--bp-grid); }

.cert-card__stamp {
  flex: 0 0 auto;
  width: 80px;
  height: 80px;
  border: 2px dashed var(--bp-amber);
  border-radius: 50%;
  color: var(--bp-amber);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.06em;
  transform: rotate(var(--rot, -6deg));
  text-align: center;
  line-height: 1.6;
}

.cert-card__stamp--pending {
  border-color: var(--bp-paper-dim);
  color: var(--bp-paper-dim);
  font-size: 22px;
}

.cert-card__detail { flex: 1; min-width: 0; }

.cert-card__provider {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--bp-cyan);
  margin: 0 0 6px;
}
.cert-card--pending .cert-card__provider { color: var(--bp-paper-dim); }

.cert-card__detail h3 { margin: 0 0 8px; font-size: 16px; line-height: 1.3; }
.cert-card__detail p  { margin: 0 0 10px; color: var(--bp-paper-dim); font-size: 13px; }

.cert-card__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--bp-paper-dim);
  margin: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}

.cert-card__meta--dim { color: var(--bp-paper-dim); opacity: 0.6; }

.cert-card__status {
  color: var(--bp-amber);
  display: inline-flex;
  align-items: center;
}

@media (max-width: 640px) {
  .cert-card { flex-direction: column; }
  .cert-card__stamp { align-self: flex-start; }
}

/* =========================================================
   PROJECTS
   ========================================================= */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.project-card {
  border: 1px solid var(--bp-grid);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--bp-panel);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

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

.project-card--empty {
  background: transparent;
  border-style: dashed;
  color: var(--bp-paper-dim);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 160px;
}

.project-card--empty:hover { transform: none; border-color: var(--bp-grid); }

.project-card__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--bp-cyan);
  margin: 0 0 10px;
}

.project-card--empty .project-card__tag { color: var(--bp-paper-dim); }

.project-card h3 { margin: 0 0 10px; font-size: 17px; }
.project-card p { margin: 0 0 16px; color: var(--bp-paper-dim); font-size: 14px; }

.project-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.project-card__stack span {
  font-family: var(--font-mono);
  font-size: 11px;
  border: 1px solid var(--bp-grid);
  border-radius: 2px;
  padding: 3px 7px;
  color: var(--bp-paper-dim);
}

.project-card__link {
  font-family: var(--font-mono);
  font-size: 13px;
}

/* =========================================================
   CONTACT FORM
   ========================================================= */
.contact-form {
  max-width: 520px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field { display: flex; flex-direction: column; gap: 6px; }

.field label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bp-paper-dim);
}

.field input, .field textarea {
  background: var(--bp-panel);
  border: 1px solid var(--bp-grid);
  border-radius: var(--radius);
  color: var(--bp-paper);
  font-family: var(--font-sans);
  font-size: 15px;
  padding: 10px 12px;
  resize: vertical;
}

.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--bp-cyan);
}

.contact-form button {
  align-self: flex-start;
  background: transparent;
  border: 1px solid var(--bp-cyan);
  color: var(--bp-cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  padding: 10px 22px;
  border-radius: var(--radius);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  transition: background 0.15s ease;
}

.contact-form button:hover { background: rgba(111, 231, 221, 0.1); }
.contact-form button:disabled { opacity: 0.5; cursor: default; }

.status-dot--idle { background: var(--bp-paper-dim); animation: none; }
.status-dot--sending { background: var(--bp-amber); }
.status-dot--success { background: #6fe78a; }
.status-dot--error { background: #e76f6f; }

.contact-form__status {
  font-family: var(--font-mono);
  font-size: 13px;
  min-height: 1.4em;
  margin: 0;
  color: var(--bp-paper-dim);
}

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  padding: 32px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--bp-paper-dim);
  text-align: center;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 640px) {
  .title-block { padding-top: 40px; }
  .title-block__meta { grid-template-columns: repeat(2, 1fr); }
  .cert { flex-direction: column; align-items: flex-start; }
}