/* =========================================================
   Tracey Onyango — MEL & Data Analyst portfolio
   Design system: deep teal accent, Space Grotesk + Manrope
   ========================================================= */

:root {
  --ink: #10231F;
  --accent: #0F6E63;
  --accent-deep: #0B5449;
  --tint: #EAF4F2;
  --tint-soft: #F5FAF9;
  --line: #DCEAE7;
  --white: #FFFFFF;
  --muted: #5C7873;

  --shadow: 0 10px 30px rgba(16, 35, 31, 0.07);

  --font-head: "Sora", sans-serif;
  --font-body: "Manrope", sans-serif;

  --wrap: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--muted);
  background: var(--white);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3 {
  font-family: var(--font-head);
  color: var(--ink);
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.1rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.15rem; letter-spacing: -0.01em; }

p { margin: 0; }

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

.eyebrow {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--accent-deep);
  margin-bottom: 10px;
}

.section {
  padding: 64px 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: 40px;
}

.section-head p {
  margin-top: 14px;
}

.bg-tint { background: var(--tint); }
.bg-white { background: var(--white); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 99px;
  padding: 13px 26px;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: var(--font-body);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-solid {
  background: var(--accent);
  color: var(--white);
}

.btn-solid:hover {
  background: var(--accent-deep);
  transform: translateY(-1px);
}

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

.btn-ghost:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.btn-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 30px;
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo .mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--tint);
  color: var(--accent);
  font-family: var(--font-head);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
}

.nav-logo .name {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--ink);
  font-size: 1.02rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink);
}

.nav-links a:hover { color: var(--accent); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  margin: 5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Hero */
.hero {
  background: var(--tint);
  padding: 72px 0 80px;
}

.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-pill {
  display: inline-block;
  background: var(--white);
  border-radius: 99px;
  padding: 7px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-deep);
  margin-bottom: 20px;
  border: 1px solid var(--line);
}

.hero-lead {
  margin-top: 18px;
  max-width: 34rem;
  font-size: 1.05rem;
}

.hero-photo {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 5;
}

.stats-row {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.stat {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 20px;
}

.stat .num {
  font-family: var(--font-head);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.stat .label {
  margin-top: 4px;
  font-size: 0.88rem;
  color: var(--muted);
}

/* Cards / grids */
.grid {
  display: grid;
  gap: 20px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
}

.service-card .icon-chip {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--tint-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
}

.service-card h3 { margin-bottom: 8px; }
.service-card p { font-size: 0.94rem; }

/* Experience timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.timeline-item:last-child { border-bottom: 1px solid var(--line); }

.timeline-date {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 600;
  padding-top: 2px;
}

.timeline-role h3 { margin-bottom: 3px; }

.timeline-org {
  font-size: 0.92rem;
  color: var(--accent-deep);
  font-weight: 600;
  margin-bottom: 10px;
  display: block;
}

.timeline-role p { font-size: 0.94rem; }

/* Project */
.project-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  overflow: hidden;
  padding: 0;
}

.project-body {
  padding: 32px;
}

.project-tools {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tool-pill {
  background: var(--tint-soft);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 5px 12px;
  font-size: 0.82rem;
  color: var(--accent-deep);
  font-weight: 600;
}

.project-visual {
  background: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.project-visual .stat-big {
  color: var(--white);
  text-align: center;
}

.project-visual .stat-big .num {
  font-family: var(--font-head);
  font-size: 3rem;
  font-weight: 700;
  color: var(--white);
}

.project-visual .stat-big .label {
  color: var(--tint);
  font-size: 0.9rem;
  margin-top: 6px;
}

.mini-stats {
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: 100%;
}

.mini-stats .mini-stat {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  padding-bottom: 14px;
}

.mini-stats .mini-stat:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.mini-stats .mini-stat .num {
  font-family: var(--font-head);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--white);
}

.mini-stats .mini-stat .label {
  font-size: 0.85rem;
  color: var(--tint);
  opacity: 0.85;
  margin-top: 2px;
}

.project-link {
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--accent);
  font-size: 0.94rem;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.gallery-item {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

.gallery-item:first-child {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-item:first-child img { aspect-ratio: 1 / 1; }

.gallery-caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 12px 14px;
  font-size: 0.82rem;
  color: var(--white);
  background: linear-gradient(transparent, transparent);
  background: rgba(16, 35, 31, 0.55);
}

/* Certifications */
.cert-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.cert-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
}

.cert-item .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 8px;
  flex-shrink: 0;
}

.cert-item .cert-name {
  font-weight: 700;
  color: var(--ink);
  font-size: 0.95rem;
}

.cert-item .cert-org {
  font-size: 0.85rem;
  margin-top: 2px;
}

.cert-item .cert-link {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.cert-item .cert-link:hover {
  color: var(--accent-deep);
  border-color: var(--accent-deep);
}

/* Contact */
.contact-wrap {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
}

.contact-info .info-row {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.contact-info .info-label {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--accent-deep);
}

.contact-info .info-value {
  margin-top: 6px;
  color: var(--ink);
  font-weight: 600;
}

.contact-info .info-value a {
  transition: color 0.15s ease;
}

.contact-info .info-value a:hover {
  color: var(--accent);
}

form { display: flex; flex-direction: column; gap: 16px; }

.field label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--white);
  transition: border-color 0.15s ease;
}

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

.field textarea { min-height: 120px; resize: vertical; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.hp-field { position: absolute; left: -9999px; opacity: 0; }

.form-status {
  font-size: 0.88rem;
  min-height: 20px;
}

.form-status.success { color: var(--accent-deep); }
.form-status.error { color: #B3452F; }

/* Footer */
footer {
  background: var(--ink);
  padding: 56px 0 30px;
  color: var(--tint);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
}

.footer-top h3 {
  color: var(--white);
}

.footer-brand p {
  margin-top: 14px;
  font-size: 0.92rem;
  color: var(--tint);
  opacity: 0.75;
  max-width: 30rem;
}

.footer-col-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 14px;
}

.footer-col a,
.footer-col p {
  display: block;
  font-size: 0.92rem;
  color: var(--tint);
  opacity: 0.8;
  margin-bottom: 10px;
}

.footer-col a:hover { opacity: 1; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 24px;
  font-size: 0.82rem;
  opacity: 0.65;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* Reveal on scroll */
.reveal,
.reveal-item {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-left {
  opacity: 0;
  transform: translateX(-28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal-right {
  opacity: 0;
  transform: translateX(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.94);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.is-visible,
.reveal-item.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible,
.reveal-scale.is-visible {
  opacity: 1;
  transform: none;
}

/* Staggered entrance for grouped items — nth-child delay, capped */
.grid-4 .reveal-item:nth-child(1) { transition-delay: 0s; }
.grid-4 .reveal-item:nth-child(2) { transition-delay: 0.09s; }
.grid-4 .reveal-item:nth-child(3) { transition-delay: 0.18s; }
.grid-4 .reveal-item:nth-child(4) { transition-delay: 0.27s; }

.stats-row .reveal-item:nth-child(1) { transition-delay: 0s; }
.stats-row .reveal-item:nth-child(2) { transition-delay: 0.1s; }
.stats-row .reveal-item:nth-child(3) { transition-delay: 0.2s; }

.timeline .reveal-item:nth-child(1) { transition-delay: 0s; }
.timeline .reveal-item:nth-child(2) { transition-delay: 0.06s; }
.timeline .reveal-item:nth-child(3) { transition-delay: 0.12s; }
.timeline .reveal-item:nth-child(4) { transition-delay: 0.18s; }
.timeline .reveal-item:nth-child(5) { transition-delay: 0.24s; }
.timeline .reveal-item:nth-child(6) { transition-delay: 0.3s; }
.timeline .reveal-item:nth-child(7) { transition-delay: 0.36s; }

.gallery-grid .reveal-item:nth-child(1) { transition-delay: 0s; }
.gallery-grid .reveal-item:nth-child(2) { transition-delay: 0.08s; }
.gallery-grid .reveal-item:nth-child(3) { transition-delay: 0.16s; }
.gallery-grid .reveal-item:nth-child(4) { transition-delay: 0.24s; }
.gallery-grid .reveal-item:nth-child(5) { transition-delay: 0.32s; }

.cert-list .reveal-item:nth-child(1) { transition-delay: 0s; }
.cert-list .reveal-item:nth-child(2) { transition-delay: 0.06s; }
.cert-list .reveal-item:nth-child(3) { transition-delay: 0.12s; }
.cert-list .reveal-item:nth-child(4) { transition-delay: 0.18s; }
.cert-list .reveal-item:nth-child(5) { transition-delay: 0.24s; }
.cert-list .reveal-item:nth-child(6) { transition-delay: 0.3s; }
.cert-list .reveal-item:nth-child(7) { transition-delay: 0.36s; }

/* Word-by-word heading reveal */
.word-reveal .word {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.4em);
  filter: blur(2px);
  transition: opacity 0.5s ease, transform 0.5s ease, filter 0.5s ease;
}

.word-reveal.is-visible .word {
  opacity: 1;
  transform: none;
  filter: blur(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-item,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .word-reveal .word {
    opacity: 1;
    transform: none;
    filter: none;
    transition: none;
  }
  html { scroll-behavior: auto; }
}

/* Responsive */
@media (max-width: 880px) {
  .nav-links {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px 26px;
    gap: 18px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

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

  .nav-toggle { display: block; }

  .hero .wrap { grid-template-columns: 1fr; }
  .hero-photo { max-width: 380px; }
  .stats-row { grid-template-columns: 1fr; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

  .timeline-item { grid-template-columns: 1fr; gap: 8px; }

  .project-card { grid-template-columns: 1fr; }

  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-item:first-child { grid-column: span 2; grid-row: span 1; }

  .cert-list { grid-template-columns: 1fr; }

  .contact-wrap { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; }
}