/* ==========================================================================
   Brenden Cavazos Portfolio -- Design System
   Swiss/editorial: white page, near-black type, warm amber accent,
   fixed left identity/nav rail, right-hand reading column.
   See design/03_DESIGN_SYSTEM.md for the source spec.
   ========================================================================== */

:root {
  --ink: #1d1d1d;
  --ink-soft: #2e2e2e;
  --mute: #6b6b6b;
  --eyebrow-ink: #444444;
  --hairline: #e4e4e4;
  --rule: #eeeeee;
  --input-border: #767676;
  /* WCAG 2.2 AA note: the design spec's decorative amber (#c89b5c) only
     hits ~2.5:1 against white, which fails both the 4.5:1 text minimum
     and the 3:1 non-text/UI-boundary minimum. --accent stays true to the
     spec for purely decorative use (aria-hidden icons, hairline accents);
     --accent-text is a darker gold (~5:1) used anywhere amber conveys
     real text, a link state, a button background, or a focus ring. */
  --accent: #c89b5c;
  --accent-text: #8a6a2a;
  --alert: #c0392b;
  --paper: #ffffff;
  --nav-col: 36%;
  --edge: 20px;
  --prose: 15px;
  --display-serif: "Bodoni Moda", "Times New Roman", serif;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--prose);
  line-height: 1.6;
  overflow-x: hidden;
}

img, embed { max-width: 100%; }

a { color: inherit; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Skip link ---------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 12px 20px;
  z-index: 100;
}
.skip-link:focus {
  left: var(--edge);
  top: var(--edge);
}

/* Focus states --------------------------------------------------------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--accent-text);
  outline-offset: 2px;
}

/* Layout shell ----------------------------------------------------------- */
.shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

@media (min-width: 900px) {
  .shell { flex-direction: row; }
}

/* Fixed left nav ----------------------------------------------------------- */
.site-nav {
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
}

@media (min-width: 900px) {
  .site-nav {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--nav-col);
    overflow-y: auto;
    border-bottom: none;
    border-right: 1px solid var(--hairline);
    padding: 48px var(--edge);
  }
}

.nav-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--edge);
}

@media (min-width: 900px) {
  .nav-top { display: none; }
}

.wordmark-link {
  font-weight: 700;
  font-size: 20px;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-toggle {
  background: none;
  border: 1px solid var(--input-border);
  border-radius: 0;
  padding: 8px 12px;
  cursor: pointer;
}
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
}
.nav-toggle-bars::before { content: ""; margin: 5px 0; }
.nav-toggle-bars::after { content: ""; }

.nav-panel {
  padding: 0 var(--edge) var(--edge);
}

@media (min-width: 900px) {
  .nav-panel { padding: 0; }
}

.identity-block { display: none; }
@media (min-width: 900px) {
  .identity-block { display: block; margin-bottom: 48px; }
}
.wordmark {
  font-weight: 700;
  font-size: 40px;
  line-height: 1.05;
  margin: 0 0 12px;
  letter-spacing: 0.01em;
}
.identity-lines {
  list-style: none;
  margin: 0; padding: 0;
  color: var(--mute);
  font-size: 15px;
}
.identity-lines li { margin-bottom: 2px; }

.primary-nav {
  list-style: none;
  margin: 0; padding: 0;
}
.primary-nav > li { margin-bottom: 4px; }
.primary-nav a {
  display: block;
  padding: 10px 0;
  font-weight: 700;
  font-size: 22px;
  text-decoration: none;
}
@media (min-width: 900px) {
  .primary-nav a { font-size: 25px; }
}
.primary-nav a:hover,
.primary-nav a.active {
  color: var(--accent-text);
}

.submenu-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.submenu-parent-link {
  flex: 1;
  padding: 10px 0;
  font-weight: 700;
  font-size: 22px;
  text-decoration: none;
}
@media (min-width: 900px) {
  .submenu-parent-link { font-size: 25px; }
}
.submenu-parent-link:hover,
.submenu-parent-link.active { color: var(--accent-text); }

.submenu-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--ink);
}
.chevron { font-size: 20px; display: inline-block; transition: transform 200ms ease; }
.submenu-toggle[aria-expanded="true"] .chevron { transform: rotate(45deg); }
@media (prefers-reduced-motion: reduce) {
  .chevron { transition: none; }
}

.submenu {
  list-style: none;
  margin: 0 0 8px;
  padding: 0 0 0 8px;
  border-left: 1px solid var(--rule);
}
.submenu[hidden] { display: none; }
.submenu a {
  display: block;
  padding: 8px 0 8px 12px;
  font-size: 16px;
  text-decoration: none;
  color: var(--ink-soft);
}
.submenu a:hover,
.submenu a.active { color: var(--accent-text); }

.nav-footer {
  margin-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid var(--hairline);
  padding-top: 16px;
}
.nav-footer-link,
.linkedin-link {
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--eyebrow-ink);
}
.nav-footer-link:hover,
.linkedin-link:hover { color: var(--accent-text); }

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--hairline);
  color: var(--ink);
  text-decoration: none;
  flex-shrink: 0;
  transition: color 200ms ease, border-color 200ms ease;
}
.social-link svg {
  width: 13px;
  height: 13px;
  fill: currentColor;
}
.social-link:hover,
.social-link:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}
.social-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.social-link--sm {
  width: 24px;
  height: 24px;
}
.social-link--sm svg {
  width: 12px;
  height: 12px;
}
@media (prefers-reduced-motion: reduce) {
  .social-link {
    transition: none;
  }
}

.contact-alt {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 22px 0 36px;
}
.contact-alt a.text-link {
  font-size: 14px;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.contact-alt a.text-link:hover,
.contact-alt a.text-link:focus-visible {
  color: var(--accent);
}

/* Main content ------------------------------------------------------------ */
.content {
  padding: 40px var(--edge) 80px;
  max-width: 900px;
}

@media (min-width: 900px) {
  .content {
    margin-left: var(--nav-col);
    padding: 64px 40px 96px;
  }
}

.prose, .section-intro { max-width: 680px; }
.prose p, .section-intro { margin: 0 0 18px; color: var(--ink-soft); }

.kicker {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--eyebrow-ink);
  margin: 0 0 16px;
}
.kicker-num { color: var(--accent-text); font-weight: 700; margin-right: 6px; }

.eyebrow, .eyebrow-heading {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--eyebrow-ink);
  margin: 0 0 8px;
  font-weight: 700;
}

h1 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(32px, 5.5vw, 60px);
  line-height: 1.05;
  margin: 0 0 24px;
}
.hero-statement {
  font-size: clamp(34px, 5.5vw, 64px);
  margin: 0 0 20px;
}
.hero-support { font-size: 17px; max-width: 620px; color: var(--ink-soft); }

.project-title {
  font-family: var(--display-serif);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(38px, 5vw, 70px);
  line-height: 1.05;
  margin: 0 0 20px;
}

h2 { font-size: 24px; margin: 0 0 12px; }
@media (min-width: 900px) { h2 { font-size: 28px; } }

/* Impact signals / metric bands --------------------------------------- */
.impact-signals, .metric-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 24px;
  padding: 24px 0;
  margin: 32px 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.signal-value, .metric-value {
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 4px;
}
.signal-label, .metric-label {
  font-size: 13px;
  color: var(--mute);
  margin: 0;
}

.facts-strip {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.fact-label { font-size: 11px; text-transform: uppercase; color: var(--mute); margin: 0; }
.fact-value { font-size: 16px; font-weight: 700; margin: 2px 0 0; }

/* Insight quotes --------------------------------------------------------- */
.insight-quote {
  font-family: var(--display-serif);
  font-style: italic;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.3;
  margin: 24px 0;
  padding-left: 20px;
  border-left: 3px solid var(--accent);
  max-width: 680px;
}

.key-takeaway { padding-top: 8px; }

/* Narrative sections ------------------------------------------------------ */
.narrative-block, .page-header, .capability-block, .index-section {
  margin-bottom: 48px;
}
.impact-list { max-width: 680px; padding-left: 20px; color: var(--ink-soft); }
.impact-list li { margin-bottom: 8px; }

.capability-list {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
}
.capability-list li {
  font-size: 13px;
  color: var(--eyebrow-ink);
  border: 1px solid var(--hairline);
  padding: 6px 12px;
}

.review-flag {
  font-size: 12px;
  color: var(--mute);
  border-top: 1px dashed var(--hairline);
  padding-top: 12px;
  margin: 24px 0 0;
}

/* Project index rows ------------------------------------------------------ */
.project-index { list-style: none; margin: 0; padding: 0; }
.project-index-item { border-top: 1px solid var(--hairline); }
.project-index-item:last-child { border-bottom: 1px solid var(--hairline); }
.project-index-item a {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 24px 0;
  text-decoration: none;
}
.index-number { font-size: 13px; color: var(--mute); flex-shrink: 0; }
.index-body { flex: 1; display: block; }
.index-title {
  display: block;
  font-family: var(--display-serif);
  font-style: italic;
  font-size: clamp(22px, 3vw, 32px);
}
.project-index-item a:hover .index-title,
.project-index-item a:focus-visible .index-title { color: var(--accent-text); }
.index-category {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  color: var(--mute);
  letter-spacing: 0.08em;
  margin: 4px 0;
}
.index-desc { display: block; color: var(--ink-soft); max-width: 560px; }
.index-metrics { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 10px; }
.index-metric { font-weight: 700; font-size: 14px; }
.index-metric-label { font-weight: 400; color: var(--mute); font-size: 12px; }
.index-arrow { color: var(--accent); font-size: 20px; flex-shrink: 0; }

/* Approach list ------------------------------------------------------------ */
.approach-list { list-style: none; margin: 0; padding: 0; }
.approach-step {
  display: flex;
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--hairline);
  max-width: 680px;
}
.approach-step:last-child { border-bottom: 1px solid var(--hairline); }
.step-number { font-family: var(--display-serif); font-style: italic; font-size: 28px; color: var(--accent-text); flex-shrink: 0; }
.approach-step h2 { margin: 0 0 8px; }
.approach-step p { margin: 0; color: var(--ink-soft); }

/* Career list --------------------------------------------------------------- */
.career-list { list-style: none; margin: 0; padding: 0; }
.career-item { padding: 20px 0; border-top: 1px solid var(--hairline); max-width: 680px; }
.career-item:last-child { border-bottom: 1px solid var(--hairline); }
.career-item h2 { font-size: 19px; margin-bottom: 6px; }
.career-item p { margin: 0; color: var(--ink-soft); }

/* Workflow diagram -------------------------------------------------------- */
.workflow-diagram { margin: 24px 0 8px; }
.workflow-diagram-scroll {
  overflow-x: auto;
  border: 1px solid var(--hairline);
  padding: 16px;
  background: var(--paper);
}
.workflow-diagram-scroll:focus-visible {
  outline: 3px solid var(--accent-text);
  outline-offset: 2px;
}
.workflow-diagram-scroll img {
  display: block;
  min-width: 720px;
  width: 100%;
  height: auto;
}
.workflow-diagram figcaption {
  font-size: 13px;
  color: var(--mute);
  margin-top: 10px;
  max-width: 680px;
}
.workflow-download { display: inline-block; margin-top: 10px; font-size: 14px; }

/* Prev/next -------------------------------------------------------------- */
.prev-next {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--hairline);
  padding-top: 32px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.prev-next-link { text-decoration: none; max-width: 45%; }
.prev-next-link.next { text-align: right; margin-left: auto; }
.prev-next-kicker { display: block; font-size: 11px; text-transform: uppercase; color: var(--mute); margin-bottom: 6px; }
.prev-next-title {
  display: block;
  font-family: var(--display-serif);
  font-style: italic;
  font-size: clamp(18px, 2.4vw, 26px);
}
.prev-next-link:hover .prev-next-title { color: var(--accent-text); }

/* Pattern-in-practice examples (Approach page) ----------------------------- */
.pattern-examples { list-style: none; margin: 24px 0 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.pattern-example-link {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  text-decoration: none;
  padding: 14px 0;
  border-top: 1px solid var(--hairline);
}
.pattern-examples li:last-child .pattern-example-link { border-bottom: 1px solid var(--hairline); }
.pattern-diagram { font-family: var(--display-serif); font-style: italic; font-size: clamp(16px, 2vw, 20px); }
.pattern-project { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--mute); white-space: nowrap; }
.pattern-example-link:hover .pattern-diagram { color: var(--accent-text); }

/* Text links --------------------------------------------------------------- */
.text-link { text-decoration: underline; text-underline-offset: 4px; }
.text-link:hover { color: var(--accent-text); }

/* About page credentials ---------------------------------------------------- */
.credentials {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
}

.cred-group {
  margin-bottom: 26px;
}

.cred-group:last-child {
  margin-bottom: 0;
}

.cred-label {
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--mute);
  margin-bottom: 12px;
}

.edu-entry {
  font-size: 14px;
  line-height: 1.6;
  color: #333;
}

.edu-entry .school {
  color: var(--ink);
}

.edu-entry .loc,
.edu-entry .date {
  color: var(--mute);
}

.edu-entry .degree {
  color: #333;
}

.cert-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 0;
  font-size: 13px;
  color: #333;
  line-height: 1.6;
}

.cert-list .provider {
  color: var(--mute);
}

.cert-list .sep {
  color: var(--accent);
  margin: 0 10px;
}

/* Resume ------------------------------------------------------------------- */
.target-areas { padding-left: 20px; max-width: 680px; color: var(--ink-soft); }
.resume-download-button {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  padding: 14px 24px;
  text-decoration: none;
  font-weight: 700;
}
.resume-download-button:hover { background: var(--accent-text); }
.resume-fallback-note { color: var(--mute); font-size: 13px; margin: 16px 0; }
.resume-embed { display: none; }
@media (min-width: 900px) {
  .resume-embed { display: block; height: 900px; border: 1px solid var(--hairline); margin-top: 16px; }
  .resume-embed embed { width: 100%; height: 100%; }
}

/* Contact form --------------------------------------------------------------- */
.contact-form { max-width: 480px; }
.form-field { margin-bottom: 20px; }
.form-field label { display: block; font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px; }
.form-field input, .form-field textarea {
  width: 100%;
  border: 1px solid var(--input-border);
  padding: 10px 12px;
  font-family: var(--sans);
  font-size: 15px;
  background: var(--paper);
  color: var(--ink);
}
.submit-button {
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 12px 24px;
  font-weight: 700;
  cursor: pointer;
}
.submit-button:hover { background: var(--accent-text); }
.form-note { color: var(--mute); font-size: 12px; margin-top: 12px; }

/* Footer --------------------------------------------------------------------- */
.site-footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  color: var(--mute);
  font-size: 12px;
}

/* Reduced motion --------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* Print (resume) --------------------------------------------------------------- */
@media print {
  .site-nav, .site-footer, .skip-link, .resume-download-button,
  .resume-fallback-note { display: none !important; }
  .content { margin: 0; padding: 0; max-width: none; }
  body { font-size: 12pt; }
}