/* Matthew Salinas portfolio — river steel / brass */

:root {
  --ink: #10241f;
  --ink-soft: #2a423a;
  --mist: #e7efe9;
  --paper: #f3f7f4;
  --panel: rgba(255, 255, 255, 0.72);
  --brass: #b08d2e;
  --brass-deep: #8a6c1a;
  --teal: #1f6b5a;
  --teal-bright: #2f9a82;
  --line: rgba(16, 36, 31, 0.12);
  --shadow: 0 18px 50px rgba(16, 36, 31, 0.12);
  --font-display: "Bricolage Grotesque", Georgia, serif;
  --font-body: "Figtree", system-ui, sans-serif;
  --max: 1120px;
  --nav-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 0.5rem);
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(47, 154, 130, 0.18), transparent 55%),
    radial-gradient(900px 500px at -10% 20%, rgba(176, 141, 46, 0.12), transparent 50%),
    linear-gradient(180deg, var(--mist) 0%, var(--paper) 40%, #eef4f0 100%);
  line-height: 1.55;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1rem;
}

.skip-link:focus {
  top: 1rem;
}

/* Nav */
.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--nav-h);
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease), backdrop-filter 0.35s;
}

.site-nav.is-scrolled {
  background: rgba(243, 247, 244, 0.88);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
}

.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  height: 100%;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-mark {
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 0.2rem;
  background: linear-gradient(135deg, var(--teal-bright), var(--brass));
  box-shadow: 0 0 0 3px rgba(47, 154, 130, 0.15);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.nav-menu a {
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--ink-soft);
  transition: color 0.2s;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: var(--teal);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
  border-radius: 0.5rem;
  place-items: center;
  gap: 5px;
  flex-direction: column;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s var(--ease);
}

/* Hero — one composition, brand-first, full-bleed plane */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  padding: calc(var(--nav-h) + 2rem) 1.25rem 3.5rem;
  isolation: isolate;
}

.hero-plane {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    linear-gradient(165deg, #0d2a24 0%, #163c34 38%, #1f5348 68%, #2a6b5a 100%);
}

.hero-river {
  position: absolute;
  inset: auto -10% -15% -10%;
  height: 55%;
  background:
    radial-gradient(60% 80% at 30% 40%, rgba(176, 141, 46, 0.35), transparent 60%),
    radial-gradient(50% 70% at 70% 60%, rgba(120, 210, 185, 0.25), transparent 55%),
    linear-gradient(180deg, transparent, rgba(8, 24, 20, 0.55));
  clip-path: polygon(0 35%, 18% 28%, 38% 40%, 55% 22%, 72% 38%, 88% 18%, 100% 30%, 100% 100%, 0 100%);
  animation: river-drift 18s ease-in-out infinite alternate;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(231, 239, 233, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(231, 239, 233, 0.07) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 70% at 60% 35%, #000 20%, transparent 75%);
  animation: grid-fade 1.2s var(--ease) both;
}

.hero-nodes {
  position: absolute;
  inset: 12% 8% 35% 35%;
  background:
    radial-gradient(circle at 20% 30%, rgba(231, 239, 233, 0.55) 0 2px, transparent 3px),
    radial-gradient(circle at 55% 45%, rgba(176, 141, 46, 0.85) 0 3px, transparent 4px),
    radial-gradient(circle at 78% 22%, rgba(231, 239, 233, 0.45) 0 2px, transparent 3px),
    radial-gradient(circle at 40% 70%, rgba(120, 210, 185, 0.7) 0 2.5px, transparent 3.5px),
    linear-gradient(115deg, transparent 48%, rgba(231, 239, 233, 0.18) 48.5%, transparent 49%),
    linear-gradient(35deg, transparent 60%, rgba(176, 141, 46, 0.25) 60.5%, transparent 61%);
  opacity: 0.85;
  animation: nodes-in 1.4s 0.15s var(--ease) both;
}

.hero-copy {
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  color: var(--mist);
  animation: rise 0.9s var(--ease) both;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5.4rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.95;
  margin-bottom: 1.1rem;
  background: linear-gradient(120deg, #f5faf7 0%, #d8ebe3 45%, #e2c76a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  max-width: 18ch;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: #eef6f2;
}

.hero-lede {
  max-width: 38rem;
  font-size: 1.05rem;
  color: rgba(231, 239, 233, 0.84);
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.7rem 1.25rem;
  border-radius: 0.55rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.2s var(--ease), background 0.2s, border-color 0.2s, color 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--brass), #d4b24a);
  color: #1a1608;
  box-shadow: 0 8px 24px rgba(176, 141, 46, 0.28);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #c49d35, #e0c05a);
}

.btn-ghost {
  border-color: rgba(231, 239, 233, 0.35);
  color: var(--mist);
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost:hover {
  border-color: rgba(231, 239, 233, 0.65);
  background: rgba(255, 255, 255, 0.08);
}

.contact .btn-ghost {
  color: var(--ink);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.5);
}

.contact .btn-ghost:hover {
  border-color: var(--teal);
  color: var(--teal);
}

/* Strip */
.strip {
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
}

.strip-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.strip strong {
  color: var(--ink);
  font-weight: 600;
}

/* Sections */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 5rem 1.25rem;
  position: relative;
  z-index: 1;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2.25rem;
}

.eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.65rem;
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 0.85rem;
}

.section-lede {
  color: var(--ink-soft);
  font-size: 1.05rem;
}

/* Filters — interactive, so button chrome is fine */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.filter {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
  color: var(--ink-soft);
  font: inherit;
  font-weight: 550;
  font-size: 0.88rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.filter:hover {
  border-color: rgba(31, 107, 90, 0.4);
  color: var(--teal);
}

.filter.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--mist);
}

/* Projects — list composition, not card grid */
.project-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.project {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
  opacity: 0;
  transform: translateY(14px);
  animation: rise 0.7s calc(var(--i) * 0.04s) var(--ease) forwards;
}

.project.is-hidden {
  display: none;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brass-deep);
  background: rgba(176, 141, 46, 0.12);
  padding: 0.22rem 0.5rem;
  border-radius: 0.3rem;
}

.project h3 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.4vw, 1.7rem);
  letter-spacing: -0.025em;
}

.project p {
  color: var(--ink-soft);
  max-width: 58rem;
}

.project-stack {
  font-size: 0.88rem;
  color: var(--teal);
  font-weight: 500;
}

.project-link {
  justify-self: start;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--brass);
  width: fit-content;
  margin-top: 0.25rem;
}

.project-link:hover {
  color: var(--teal);
  border-color: var(--teal);
}

@media (min-width: 800px) {
  .project {
    grid-template-columns: 8rem 1fr;
    column-gap: 2rem;
    align-items: start;
  }

  .project-meta {
    grid-row: 1 / span 4;
    flex-direction: column;
    align-items: flex-start;
    padding-top: 0.35rem;
  }

  .project h3,
  .project p,
  .project-stack,
  .project-link {
    grid-column: 2;
  }
}

/* Skills */
.skill-rows {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}

.skill-row {
  display: grid;
  gap: 0.5rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
}

.skill-row h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.skill-row p {
  color: var(--ink-soft);
  max-width: 48rem;
}

@media (min-width: 720px) {
  .skill-row {
    grid-template-columns: 14rem 1fr;
    gap: 2rem;
    align-items: baseline;
  }
}

/* About */
.about-grid {
  display: grid;
  gap: 1.5rem;
}

.about-copy p + p {
  margin-top: 1rem;
}

.about-copy p {
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.about-stats {
  list-style: none;
  margin-top: 1.75rem;
  display: grid;
  gap: 0.85rem;
}

.about-stats li {
  padding-left: 1rem;
  border-left: 3px solid var(--brass);
  color: var(--ink-soft);
}

.about-stats strong {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

@media (min-width: 860px) {
  .about-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
    align-items: start;
  }
}

/* Contact */
.contact-panel {
  padding: 2.5rem 0 0;
  border-top: 1px solid var(--line);
}

.contact-panel p {
  color: var(--ink-soft);
  max-width: 36rem;
  margin-bottom: 1.5rem;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 1.25rem 2.5rem;
  position: relative;
  z-index: 1;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.footer-note {
  opacity: 0.8;
}

/* Motion */
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes river-drift {
  from {
    transform: translateY(0) scale(1);
  }
  to {
    transform: translateY(-12px) scale(1.03);
  }
}

@keyframes grid-fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes nodes-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 0.85;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-copy,
  .hero-grid,
  .hero-nodes,
  .project,
  .hero-river {
    animation: none !important;
    opacity: 1;
    transform: none;
  }
}

/* Mobile nav */
@media (max-width: 720px) {
  .nav-toggle {
    display: inline-grid;
  }

  .nav-menu {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.25rem;
    background: rgba(243, 247, 244, 0.96);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s;
  }

  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-menu a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
  }

  .strip-inner {
    grid-template-columns: 1fr;
  }

  .hero {
    align-items: center;
    padding-bottom: 2.5rem;
  }

  .hero-headline {
    max-width: 22ch;
  }
}