/* ============================================================
   Matthew Guadarrama — Portfolio
   ============================================================ */

:root {
  --bg: #fbfaf8;
  --bg-alt: #f2f0ec;
  --ink: #16181b;
  --ink-soft: #4a4d52;
  --ink-faint: #86898f;
  --line: #dedad3;
  --accent: #155e63;
  --accent-soft: #d8e9e9;
  --card-bg: #ffffff;
  --radius: 2px;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

/* ---------------- Header ---------------- */

header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 248, 0.86);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  max-width: var(--max);
  margin: 0 auto;
}

.nav-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-links a {
  color: var(--ink-soft);
  transition: color 0.15s ease;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}
.nav-links a:hover {
  color: var(--ink);
  border-color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 6px 10px;
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
}

/* ---------------- Hero ---------------- */

.hero {
  padding: 92px 0 72px;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(34px, 5.4vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 22px 0 24px;
  max-width: 15ch;
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero p.lede {
  font-size: 18px;
  color: var(--ink-soft);
  max-width: 58ch;
  margin: 0 0 30px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-faint);
}

.hero-meta span strong {
  color: var(--ink);
  font-weight: 500;
}

.hero-links {
  margin-top: 34px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn:hover { background: var(--ink); color: var(--bg); }

.btn.ghost {
  border-color: var(--line);
  color: var(--ink-soft);
}
.btn.ghost:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* ---------------- Section headers ---------------- */

section { padding: 76px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}

.section-head h2 {
  font-family: var(--serif);
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 10px 0 0;
}

.section-head .section-desc {
  max-width: 42ch;
  color: var(--ink-soft);
  font-size: 15px;
  text-align: right;
}

/* ---------------- Project cards (featured) ---------------- */

.project-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.project-card {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 0;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.18s ease, transform 0.18s ease;
}
.project-card:hover {
  border-color: var(--ink);
}

.project-card.alt {
  grid-template-columns: 1fr 1.1fr;
}
.project-card.alt .thumb { order: 2; }
.project-card.alt .body { order: 1; }

.project-card .thumb {
  position: relative;
  background: var(--bg-alt);
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.project-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.project-card:hover .thumb img { transform: scale(1.035); }

.project-card .thumb.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  text-align: center;
  padding: 20px;
}

.project-card .thumb .count {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(22,24,27,0.72);
  color: #fff;
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: var(--radius);
  letter-spacing: 0.04em;
}

.project-card .body {
  padding: 30px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.project-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 9px;
  border-radius: var(--radius);
}

.tag.status {
  color: #7a5c00;
  background: #f5e6b8;
}

/* Per-skill tag colors — keeps each tool/skill the same color everywhere it appears.
   Add a new rule here (keyed by the lowercase, hyphenated tag text) when a new tag
   is introduced in projects-data.js; unmatched tags fall back to the default .tag style above. */
.tag[data-tag="solidworks"]        { color: #a33b2c; background: #f4ddd7; }
.tag[data-tag="ansys-fluent"]      { color: #1f5f8b; background: #dbe8f0; }
.tag[data-tag="cfd"]               { color: #1f7a6c; background: #dcefe9; }
.tag[data-tag="3d-printing"]       { color: #b5720f; background: #f5e6cf; }
.tag[data-tag="laser-cutting"]     { color: #6a3fa0; background: #e7ddf2; }
.tag[data-tag="assembly-design"]   { color: #8a6d1d; background: #f2ecd2; }
.tag[data-tag="dfm"]               { color: #4a5568; background: #e2e5ea; }
.tag[data-tag="kinematics"]        { color: #7c3f7a; background: #f0dcee; }
.tag[data-tag="mechanism-design"]  { color: #2f6b3a; background: #dcecdf; }
.tag[data-tag="arduino"]           { color: #00767a; background: #d7eeee; }
.tag[data-tag="embedded-systems"]  { color: #2b3a67; background: #dde1ee; }
.tag[data-tag="product-design"]    { color: #a5406a; background: #f4dde6; }

.project-card h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 500;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.project-date {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  margin-bottom: 14px;
}

.project-card p.desc {
  color: var(--ink-soft);
  font-size: 14.5px;
  margin: 0 0 18px;
}

.specs {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.specs .spec {
  font-family: var(--mono);
}
.specs .spec .k {
  display: block;
  font-size: 10.5px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.specs .spec .v {
  font-size: 14px;
  color: var(--ink);
}

.read-more {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink);
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.read-more::after { content: "→"; transition: transform 0.15s ease; }
.project-card:hover .read-more::after { transform: translateX(4px); }

@media (max-width: 760px) {
  .project-card, .project-card.alt { grid-template-columns: 1fr; }
  .project-card.alt .thumb, .project-card.alt .body { order: initial; }
}

/* ---------------- Modal ---------------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 15, 15, 0.72);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 20px;
  overflow-y: auto;
  z-index: 100;
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--bg);
  max-width: 780px;
  width: 100%;
  border-radius: var(--radius);
  margin: auto;
  position: relative;
  border: 1px solid var(--line);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--ink);
  color: var(--bg);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 16px;
  cursor: pointer;
  z-index: 5;
}

.modal-gallery {
  position: relative;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-gallery img {
  width: 100%;
  max-height: 62vh;
  object-fit: contain;
  display: block;
}
.modal-gallery .placeholder-img {
  width: 100%;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  color: var(--ink-faint);
  font-size: 13px;
}

.modal-gallery .gnav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.85);
  border: 1px solid var(--line);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 15px;
}
.modal-gallery .gnav.prev { left: 14px; }
.modal-gallery .gnav.next { right: 14px; }
.modal-gallery .gdots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
}
.modal-gallery .gdots span {
  width: 6px; height: 6px; border-radius: 50%;
  background: rgba(255,255,255,0.55);
}
.modal-gallery .gdots span.active { background: #fff; }

.modal-body { padding: 30px 34px 36px; }
.modal-body h3 {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
  margin: 6px 0 4px;
}
.modal-body .project-date { margin-bottom: 16px; }
.modal-body .desc { color: var(--ink-soft); font-size: 15px; margin-bottom: 20px; }
.modal-body .specs { margin-bottom: 4px; }

/* ---------------- Manufacturing grid (secondary projects, if added later) ---------------- */

.grid-projects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 860px) { .grid-projects { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid-projects { grid-template-columns: 1fr; } }

/* ---------------- About ---------------- */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
}
@media (max-width: 800px) { .about-grid { grid-template-columns: 1fr; gap: 36px; } }

.about-grid p { color: var(--ink-soft); margin: 0 0 16px; font-size: 15.5px; }

.about-block { margin-bottom: 30px; }
.about-block:last-child { margin-bottom: 0; }
.about-block h4 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 14px;
}

.timeline {
  position: relative;
  padding-left: 48px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line);
}

.icon-badge {
  position: absolute;
  left: -48px;
  top: 0;
  width: 35px;
  height: 35px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.icon-badge svg { width: 16px; height: 16px; }

.timeline-item {
  position: relative;
  padding-bottom: 22px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.timeline-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.timeline-item .row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  flex-wrap: wrap;
}
.timeline-item .role { font-weight: 600; font-size: 15px; color: var(--ink); }
.timeline-item .org { color: var(--ink-soft); font-size: 14px; }
.timeline-item .when {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-faint);
  white-space: nowrap;
}
.timeline-item ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 14px;
}
.timeline-item li { margin-bottom: 4px; }

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pill {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 6px 11px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-soft);
}

/* ---------------- Music ---------------- */

.music-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 46px;
  align-items: center;
}
@media (max-width: 800px) { .music-hero { grid-template-columns: 1fr; } }

.music-hero p { color: var(--ink-soft); margin: 0 0 18px; font-size: 15.5px; }

.yt-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card-bg);
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.yt-card:hover {
  border-color: #ff0000;
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(22, 24, 27, 0.08);
}
.yt-card-icon {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #ff0000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.yt-card-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
  min-width: 0;
}
.yt-card-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.yt-card-handle {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 500;
  color: var(--ink);
}
.yt-card-arrow {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--ink-faint);
  transition: transform 0.15s ease, color 0.15s ease;
  flex-shrink: 0;
}
.yt-card:hover .yt-card-arrow { transform: translateX(5px); color: var(--ink); }

.music-sub-head {
  margin: 56px 0 22px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}
.music-sub-head h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  margin: 10px 0 6px;
}
.music-sub-head p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.track-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.track-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 320px) auto;
  align-items: center;
  gap: 18px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.track-info h4 {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 500;
  margin: 6px 0 2px;
}
.track-sub {
  font-size: 13px;
  color: var(--ink-faint);
}

.track-card audio {
  width: 100%;
  height: 36px;
}

.track-dl {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 14px;
  color: var(--ink-soft);
  flex-shrink: 0;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.track-dl:hover { border-color: var(--ink); color: var(--ink); }

@media (max-width: 700px) {
  .track-card {
    grid-template-columns: 1fr;
    align-items: stretch;
  }
  .track-dl { justify-self: start; }
}

.music-break {
  margin: 48px 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.music-break img {
  width: 100%;
  aspect-ratio: 8/5;
  object-fit: contain;
  background: var(--bg-alt);
  display: block;
}

.music-break-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 8px 0 4px;
}
.music-break-duo figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.music-break-duo img {
  width: 100%;
  aspect-ratio: 8/5;
  object-fit: contain;
  background: var(--bg-alt);
  display: block;
}
@media (max-width: 700px) {
  .music-break-duo { grid-template-columns: 1fr; }
}

/* ---------------- Contact / Footer ---------------- */

footer {
  padding: 70px 0 50px;
}

.contact-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 30px;
}

footer h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 500;
  margin: 10px 0 18px;
  max-width: 14ch;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-family: var(--mono);
  font-size: 14px;
}
.contact-links a { border-bottom: 1px solid var(--line); padding-bottom: 2px; }
.contact-links a:hover { border-color: var(--ink); }

.foot-bottom {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-faint);
}

@media (max-width: 700px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-block; }
  .nav.open .nav-links {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 18px 28px 24px;
    border-bottom: 1px solid var(--line);
    gap: 16px;
  }
}