/* ============================================
   style.css — Jack Zhang Portfolio
   All styles for the entire website
   ============================================ */

/* --- Google Font --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* --- CSS Variables (Light Mode Default) --- */
:root {
  --bg:           #f0f2f8;
  --bg-alt:       #e4e8f5;
  --surface:      #ffffff;
  --border:       #c8cfe8;
  --accent:       #1a3fa8;
  --accent-hover: #163391;
  --accent-light: rgba(26, 63, 168, 0.08);
  --text:         #0d1330;
  --text-muted:   #374151;
  --radius:       14px;
  --nav-height:   68px;
  --font:         'Outfit', system-ui, sans-serif;
  --shadow:       0 4px 20px rgba(13, 19, 48, 0.08);
}

/* --- Dark Mode --- */
body.dark {
  --bg:           #080c14;
  --bg-alt:       #0f1526;
  --surface:      #0d1220;
  --border:       #1a2236;
  --accent:       #7aaeff;
  --accent-hover: #5b95f7;
  --accent-light: rgba(122, 174, 255, 0.08);
  --text:         #f0f2f7;
  --text-muted:   #aab4cc;
  --shadow:       0 4px 20px rgba(0, 0, 0, 0.3);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  transition: background-color 0.3s, color 0.3s;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ============================================
   NAVBAR (shared across all pages)
   ============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: background-color 0.3s, border-color 0.3s;
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
}

.logo-dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.4rem 0.9rem;
  border-radius: 8px;
  transition: color 0.2s, background-color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background-color: var(--accent-light);
}

.hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1.2rem;
  padding: 0.3rem 0.7rem;
  border-radius: 8px;
  cursor: pointer;
}

.dark-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent-light);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font);
  padding: 0.45rem 1rem;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.dark-toggle:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ============================================
   BUTTONS (shared)
   ============================================ */
.btn {
  display: inline-block;
  padding: 0.8rem 1.75rem;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all 0.2s;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26, 63, 168, 0.25);
}

.btn-outline {
  background-color: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover {
  background-color: var(--accent);
  color: #ffffff;
  transform: translateY(-2px);
}

/* ============================================
   PAGE WRAPPER (adds top padding for fixed nav)
   ============================================ */
.page-wrapper {
  padding-top: var(--nav-height);
  min-height: 100vh;
}

/* ============================================
   SECTION STYLES (shared)
   ============================================ */
.section { padding: 5rem 0; }
.section-alt { background-color: var(--bg-alt); transition: background-color 0.3s; }

.section-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.section-number {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent);
  opacity: 0.55;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
}

.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background-color: var(--accent);
  border-radius: 2px;
  margin-top: 0.5rem;
}

/* ============================================
   FOOTER (shared)
   ============================================ */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: background-color 0.3s, border-color 0.3s;
}

.footer-top {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  transition: opacity 0.2s;
}
.footer-top:hover { opacity: 0.7; }

/* ============================================
   HOME PAGE — HERO
   ============================================ */
.hero {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  gap: 4rem;
  padding: 4rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-content { flex: 1; }

.hero-badge {
  display: inline-block;
  background: var(--accent-light);
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.06em;
}

.hero-name {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.hero-name-accent { color: var(--accent); }

.hero-role {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero-bio {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 2rem;
  line-height: 1.75;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Hero photo side */
.hero-photo-side {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.hero-photo-frame {
  width: 280px;
  height: 280px;
  border-radius: 24px;
  background: var(--accent-light);
  border: 2px solid var(--border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Placeholder shown when no photo is added */
.photo-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent);
  opacity: 0.5;
  text-align: center;
  padding: 1rem;
}

.photo-placeholder span {
  font-size: 3rem;
}

.photo-placeholder p {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* Quick info cards below photo */
.hero-info-cards {
  display: flex;
  gap: 0.75rem;
}

.info-chip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 1rem;
  text-align: center;
  font-size: 0.72rem;
}

.info-chip-label {
  display: block;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.15rem;
}

.info-chip-value {
  display: block;
  font-weight: 600;
  color: var(--text);
  font-size: 0.78rem;
}

/* ============================================
   HOME PAGE — ABOUT STRIP
   ============================================ */
.home-about {
  background: var(--bg-alt);
  padding: 4rem 0;
  transition: background-color 0.3s;
}

.facts-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.fact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s;
}

.fact-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.fact-number {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 0.35rem;
}

.fact-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* ============================================
   PORTFOLIO PAGE
   ============================================ */
.portfolio-intro {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 3rem;
  line-height: 1.75;
}

/* CSS Grid gallery layout */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.portfolio-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.portfolio-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.portfolio-card-img {
  width: 100%;
  height: 180px;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--accent);
  position: relative;
  overflow: hidden;
}

.portfolio-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portfolio-card-body {
  padding: 1.5rem;
}

.portfolio-card-tag {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: 100px;
  margin-bottom: 0.6rem;
}

.portfolio-card-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.portfolio-card-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.portfolio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tag {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.18rem 0.6rem;
  border-radius: 6px;
}

/* ============================================
   RESUME PAGE
   ============================================ */
.resume-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.resume-section-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent);
}

/* Resume entry — date on left, details on right using Flexbox */
.resume-entry {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

.resume-date {
  flex-shrink: 0;
  width: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  padding-top: 0.25rem;
  line-height: 1.4;
}

.resume-details {
  flex: 1;
}

.resume-details h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.resume-details .institution {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.resume-details p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Skills list */
.skills-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skill-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.skill-name {
  width: 130px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  flex-shrink: 0;
}

.skill-bar {
  flex: 1;
  height: 8px;
  background: var(--border);
  border-radius: 100px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 100px;
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

/* HTML Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-group textarea { resize: vertical; min-height: 130px; }

/* Contact info side */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-light);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-info-text strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.15rem;
}

.contact-info-text span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Embedded media */
.contact-embed {
  margin-top: 1.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.contact-embed iframe {
  width: 100%;
  display: block;
  border: none;
}

.embed-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  padding: 0.5rem;
  background: var(--bg-alt);
}

/* ============================================
   PROCESS PAGE
   ============================================ */
.process-intro {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 650px;
  margin-bottom: 3rem;
  line-height: 1.8;
}

.process-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 2rem;
}

.process-block h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.process-block p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 0.75rem;
}

.process-block p:last-child { margin-bottom: 0; }

/* Wireframe placeholder grid */
.wireframe-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.25rem;
}

.wireframe-item {
  background: var(--bg-alt);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 1.5rem 1rem;
  text-align: center;
}

.wireframe-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
  margin: 0;
}

.wireframe-item span {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.4rem;
  opacity: 0.4;
}

/* References list */
.references-list {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.reference-item {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
  padding-left: 1rem;
  border-left: 2px solid var(--border);
}

/* Accessibility checklist */
.a11y-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.75rem;
}

.a11y-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.a11y-check {
  color: #16a34a;
  font-weight: 700;
  flex-shrink: 0;
  font-size: 1rem;
}

/* ============================================
   PAGE HERO (for inner pages)
   ============================================ */
.page-hero {
  background: var(--bg-alt);
  padding: 3.5rem 0 3rem;
  border-bottom: 1px solid var(--border);
  transition: background-color 0.3s;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.04em;
  margin-bottom: 0.5rem;
}

.page-hero p {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 520px;
}

/* ============================================
   MEDIA QUERIES — RESPONSIVE
   ============================================ */

/* Tablet 900px */
@media (max-width: 900px) {

  .hero {
    flex-direction: column-reverse;
    text-align: center;
    gap: 2rem;
    padding: 3rem 2rem;
  }

  .hero-bio { margin: 0 auto 2rem; }
  .hero-buttons { justify-content: center; }

  .hero-photo-frame { width: 200px; height: 200px; }

  .facts-row { grid-template-columns: repeat(2, 1fr); }

  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }

  .resume-grid { grid-template-columns: 1fr; gap: 2rem; }

  .contact-layout { grid-template-columns: 1fr; }

  .wireframe-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile 768px */
@media (max-width: 768px) {

  /* Hamburger shows, nav links stack */
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0.25rem;
    z-index: 99;
  }

  .nav-links.open { display: flex; }
  .hamburger { display: block; }

  .portfolio-grid { grid-template-columns: 1fr; }
  .wireframe-grid { grid-template-columns: 1fr; }

  .footer {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* Small mobile 480px */
@media (max-width: 480px) {

  .container { padding: 0 1.25rem; }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  .hero-buttons .btn { width: 100%; text-align: center; }

  .facts-row { grid-template-columns: 1fr 1fr; }

  .hero-info-cards { flex-direction: column; }

  .resume-entry { flex-direction: column; gap: 0.4rem; }
  .resume-date { width: auto; }

  .contact-layout { grid-template-columns: 1fr; }
}

/* ============================================
   PORTFOLIO — 2-column big cards
   ============================================ */
.portfolio-grid-2col {
  grid-template-columns: repeat(2, 1fr);
}

.portfolio-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
  cursor: pointer;
}

.portfolio-card-img-tall {
  height: 260px;
  position: relative;
}

.portfolio-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26, 63, 168, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
  border-radius: 0;
}

.portfolio-card-link:hover .portfolio-card-overlay { opacity: 1; }

.overlay-cta {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.card-read-more {
  display: inline-block;
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 700;
  margin-top: 0.5rem;
  transition: gap 0.2s;
}

.portfolio-card-link:hover .card-read-more { opacity: 0.75; }

/* ============================================
   CASE STUDY PAGES
   ============================================ */
.back-link {
  display: inline-block;
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 1rem;
  transition: opacity 0.2s;
}
.back-link:hover { opacity: 0.7; }

.case-tag {
  display: inline-block;
  background: var(--accent-light);
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1rem;
}

.case-body { max-width: 820px; }

.case-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 3.5rem;
}

.case-meta-item {
  padding: 1.25rem 1.5rem;
  border-right: 1px solid var(--border);
  background: var(--surface);
}
.case-meta-item:last-child { border-right: none; }

.case-meta-label {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

.case-meta-value {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
}

.case-section {
  margin-bottom: 3rem;
}

.case-section h2 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

.case-section p {
  color: var(--text-muted);
  font-size: 0.97rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}

.case-section p:last-child { margin-bottom: 0; }

.case-quote {
  background: var(--accent-light);
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  padding: 1.1rem 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.75;
}

.case-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1.5rem 0;
}

.case-step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.case-step-num {
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
  flex-shrink: 0;
}

.case-step strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.case-step p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}

.case-metric {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}

.case-metric-val {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 0.4rem;
}

.case-metric-lbl {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.case-nav {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

/* ============================================
   SKILLS — simple pill tags, no bars
   ============================================ */
.skills-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-pill {
  background: var(--surface);
  border: 1.5px solid var(--border);
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.55rem 1.2rem;
  border-radius: 100px;
  transition: border-color 0.2s, color 0.2s, background-color 0.2s;
}

.skill-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

/* ============================================
   CONTACT — logo-only icons, no padding cards
   ============================================ */
.contact-icons-row {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.contact-icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  transition: border-color 0.2s, transform 0.2s;
  color: var(--text);
  font-size: 1.2rem;
}

.contact-icon-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ============================================
   RESUME — work/leadership experience
   ============================================ */
.resume-bullet-list {
  margin-top: 0.5rem;
  padding-left: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.resume-bullet-list li {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.6;
  list-style: disc;
}

@media (max-width: 768px) {
  .portfolio-grid-2col { grid-template-columns: 1fr; }
  .case-meta { grid-template-columns: repeat(2, 1fr); }
  .case-meta-item { border-bottom: 1px solid var(--border); }
  .case-metrics { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .case-meta { grid-template-columns: 1fr; }
  .case-nav { flex-direction: column; }
}

/* ============================================
   CASE STUDY — full width image
   ============================================ */
.case-image-full {
  margin: 1.5rem 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-alt);
}

.case-image-full img {
  width: 100%;
  display: block;
  object-fit: cover;
}

/* ============================================
   PROCESS PAGE — wireframe images
   ============================================ */
.wireframe-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.wireframe-item {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  text-align: center;
}

.wireframe-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

.wireframe-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
  padding: 0.6rem 1rem;
  margin: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

@media (max-width: 600px) {
  .wireframe-grid { grid-template-columns: 1fr; }
}