/* =========================================================================
   Collins Orighose — portfolio site
   Theme: fresh sky & sunshine — airy blue-white, warm amber accents,
          generous typography for easy reading
   ========================================================================= */

:root {
  /* Surfaces — clear sky, airy and open */
  --bg: #f0f8ff;
  --bg-elevated: #ffffff;
  --surface: #e4f1fc;
  --surface-2: #cce4f8;

  /* Text — deep warm navy, maximum readability without harsh black */
  --text: #1a2030;
  --text-strong: #0d1420;
  --text-body: #374060;
  --text-soft: #5a6480;
  --muted: #8a94a8;

  --border: rgba(30, 60, 120, 0.10);
  --border-strong: rgba(30, 60, 120, 0.18);

  /* Accent — friendly sky blue */
  --accent: #3b7dd8;
  --accent-2: #2d6fc4;
  --accent-strong: #1f5aac;
  --accent-soft: rgba(59, 125, 216, 0.10);
  --accent-soft-strong: rgba(59, 125, 216, 0.18);
  --accent-warm: #f59e0b; /* sunshine amber for badges & pops */
  --on-accent: #ffffff;

  /* Effects */
  --shadow: 0 4px 28px rgba(30, 60, 120, 0.10);
  --shadow-soft: 0 2px 14px rgba(30, 60, 120, 0.08);
  --focus-ring: 0 0 0 3px rgba(59, 125, 216, 0.35);

  --radius: 16px;
  --radius-sm: 12px;

  /* Inter: excellent screen readability at any size */
  --font-sans: "Inter", "DM Sans", system-ui, -apple-system, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo,
    Consolas, monospace;

  --max: 1100px;
}

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

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.75;
  color: var(--text);
  background: radial-gradient(
      1400px 700px at 0% 0%,
      rgba(59, 125, 216, 0.09),
      transparent
    ),
    radial-gradient(
      800px 500px at 100% 15%,
      rgba(245, 158, 11, 0.07),
      transparent
    ),
    var(--bg);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

a {
  color: var(--accent);
  text-underline-offset: 3px;
  transition: color 0.18s ease;
}

a:hover {
  color: var(--accent-strong);
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 8px;
}

button {
  font-family: inherit;
}

/* Skip link --------------------------------------------------------------- */
.skip-link {
  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:focus {
  position: fixed;
  clip: auto;
  width: auto;
  height: auto;
  left: 1rem;
  top: 1rem;
  z-index: 10001;
  padding: 0.6rem 1rem;
  background: var(--bg-elevated);
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  color: var(--text);
}

.wrap {
  width: min(var(--max), 92vw);
  margin: 0 auto;
}

/* Header ------------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(240, 248, 255, 0.92);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  backdrop-filter: blur(14px) saturate(130%);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand a {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-strong);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.65rem;
  height: 2.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1.15rem;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease;
}

.nav-toggle:hover {
  background: var(--surface-2);
  border-color: var(--border-strong);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.2rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.18s ease;
}

.nav a:hover {
  color: var(--text-strong);
}

.nav-social {
  font-family: var(--font-mono);
  font-size: 0.78rem !important;
  font-weight: 500 !important;
  letter-spacing: -0.02em;
}

/* Hero -------------------------------------------------------------------- */
.hero {
  padding: 3rem 0 2.25rem;
}

.hero-split {
  display: grid;
  gap: 2.5rem;
  align-items: center;
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .hero-split {
    grid-template-columns: 1fr minmax(240px, 320px);
    text-align: left;
  }

  .hero-main .pill-row,
  .hero-main .actions {
    justify-content: flex-start;
  }

  .hero-main .hero-stats {
    margin-inline: 0;
  }

  .hero-lede {
    margin-left: 0;
    margin-right: 0;
  }

  .hero-photo-wrap {
    justify-self: end;
  }
}

@media (max-width: 899px) {
  .hero-split {
    text-align: center;
  }

  .hero-main .pill-row,
  .hero-main .actions {
    justify-content: center;
  }
}

.hero-photo-wrap {
  margin: 0;
  justify-self: center;
}

.hero-photo {
  display: block;
  width: min(100%, 320px);
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 24px;
  border: 2px solid rgba(59, 125, 216, 0.25);
  box-shadow: 0 0 0 1px rgba(30, 60, 120, 0.06), var(--shadow),
    0 0 70px rgba(59, 125, 216, 0.14);
}

.kicker {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.01em;
}

.hero h1 {
  margin: 0 0 0.85rem;
  font-size: clamp(2.4rem, 5.5vw, 3.1rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-strong);
}

.hero-lede {
  margin: 0 auto 1.4rem;
  max-width: 56ch;
  color: var(--text-body);
  font-size: 1.08rem;
  line-height: 1.8;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.85rem;
}

.pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.38rem 0.82rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  border: 1px solid rgba(59, 125, 216, 0.22);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.85rem;
  max-width: 520px;
  margin-inline: auto;
}

.stat {
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-soft);
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.stat span {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 600;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.68rem 1.3rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.18s ease, border-color 0.18s ease,
    color 0.18s ease, transform 0.12s ease, filter 0.18s ease,
    box-shadow 0.18s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #1f5aac);
  color: var(--on-accent);
}

.btn-primary:hover {
  filter: brightness(1.08);
  color: var(--on-accent);
}

.btn-ghost {
  background: var(--bg-elevated);
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  border-color: rgba(30, 60, 120, 0.30);
  background: var(--surface);
}

/* Marquee ----------------------------------------------------------------- */
.marquee-wrap {
  margin-top: 0.75rem;
  overflow: hidden;
  border-block: 1px solid var(--border);
  background: linear-gradient(
    90deg,
    var(--surface),
    var(--bg-elevated),
    var(--surface)
  );
}

.marquee-inner {
  display: flex;
  gap: 2.5rem;
  padding: 0.9rem 0;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--accent-2);
}

@media (prefers-reduced-motion: no-preference) {
  .marquee-inner {
    animation: marquee 42s linear infinite;
  }
}

.marquee-inner span {
  opacity: 0.85;
}

@keyframes marquee {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* Sections ---------------------------------------------------------------- */
section {
  padding: 3.5rem 0;
}

.section-anchor {
  border-top: 1px solid var(--border);
}

.section-head {
  margin-bottom: 2rem;
  text-align: center;
}

.section-kicker {
  margin: 0 0 0.4rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-strong);
}

.subhead {
  margin: 2.25rem auto 1.1rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-strong);
}

.prose-block {
  max-width: 68ch;
  margin: 0 auto;
}

.prose-block p {
  margin: 0 0 1.35rem;
  color: var(--text-body);
  font-size: 1.02rem;
  line-height: 1.8;
}

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

.value-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.chip {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-soft);
  box-shadow: var(--shadow-soft);
}

/* Skills ------------------------------------------------------------------ */
.skills-grid {
  display: grid;
  gap: 1.1rem;
}

@media (min-width: 700px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.skill-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.3rem 1.4rem 1.1rem;
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  transition: border-color 0.2s ease, box-shadow 0.2s ease,
    transform 0.18s ease;
}

.skill-card:hover {
  border-color: rgba(59, 125, 216, 0.32);
  box-shadow: 0 8px 36px rgba(30, 60, 120, 0.13);
  transform: translateY(-2px);
}

.skill-card h3 {
  margin: 0 0 0.9rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-strong);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.34rem 0.62rem;
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--text-soft);
}

.skill-extra {
  display: none;
  margin-top: 0.4rem;
}

.skill-card.is-expanded .skill-extra {
  display: flex;
}

.skill-toggle {
  margin-top: 1rem;
  padding: 0;
  border: none;
  background: none;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.skill-toggle:hover {
  color: var(--accent-strong);
}

/* Highlights -------------------------------------------------------------- */
.cards-grid {
  display: grid;
  gap: 1.2rem;
}

@media (min-width: 720px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.hl-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  height: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease,
    transform 0.18s ease;
}

.hl-card:hover {
  border-color: rgba(59, 125, 216, 0.30);
  box-shadow: 0 8px 36px rgba(30, 60, 120, 0.12);
  transform: translateY(-2px);
}

.hl-badge {
  display: inline-block;
  margin-bottom: 0.75rem;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.34rem 0.62rem;
  border-radius: 6px;
  background: rgba(245, 158, 11, 0.12);
  color: #a07000;
}

.hl-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-strong);
}

.hl-card p {
  margin: 0;
  color: var(--text-body);
  font-size: 0.97rem;
  line-height: 1.75;
}

.hl-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
  margin-top: 1rem;
}

/* Experience -------------------------------------------------------------- */
.exp-layout {
  display: grid;
  gap: 1.35rem;
}

@media (min-width: 840px) {
  .exp-layout {
    grid-template-columns: minmax(0, 260px) 1fr;
    align-items: start;
    gap: 2rem;
  }
}

.exp-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

@media (min-width: 840px) {
  .exp-tabs {
    flex-direction: column;
    position: sticky;
    top: 5.75rem;
  }
}

.exp-tab {
  flex: 1 1 calc(33% - 0.5rem);
  min-height: 2.9rem;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--muted);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.25;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease,
    background 0.2s ease, box-shadow 0.2s ease;
}

.exp-tab:hover {
  border-color: rgba(59, 125, 216, 0.40);
  color: var(--text);
  background: var(--surface);
}

.exp-tab.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
  box-shadow: 0 2px 10px rgba(59, 125, 216, 0.15);
}

.exp-pane {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 1.6rem;
  box-shadow: var(--shadow);
}

.exp-pane[hidden] {
  display: none !important;
}

.exp-pane-head h3 {
  margin: 0 0 0.2rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-strong);
}

.exp-pane-head .meta {
  margin: 0 0 1.15rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.exp-pane ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--text-body);
}

.exp-pane li {
  line-height: 1.75;
}

.exp-pane li + li {
  margin-top: 0.6rem;
}

.stack-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
  margin-top: 1.1rem;
}

.stack-chip {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--text-soft);
}

/* Education --------------------------------------------------------------- */
.edu-grid {
  display: grid;
  gap: 1.1rem;
}

@media (min-width: 680px) {
  .edu-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.edu-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.edu-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-strong);
}

.edu-card .place {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.edu-list {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.75;
}

.edu-list li + li {
  margin-top: 0.5rem;
}

/* CTA --------------------------------------------------------------------- */
.cta-strip {
  text-align: center;
  padding: 3.25rem 1.5rem;
  border-radius: var(--radius);
  background: linear-gradient(145deg, #1a4f9c, #3b7dd8);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #f0f8ff;
  box-shadow: 0 8px 40px rgba(30, 60, 120, 0.22);
}

.cta-strip h2 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.025em;
}

.cta-strip p {
  margin: 0 auto 1.75rem;
  max-width: 50ch;
  opacity: 0.92;
  font-size: 1.05rem;
  line-height: 1.75;
}

.cta-strip .btn-primary {
  background: #ffffff;
  color: #1a4f9c;
}

.cta-strip .btn-primary:hover {
  filter: brightness(0.96);
  color: #1a4f9c;
}

.cta-strip .btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.45);
  color: #ffffff;
}

.cta-strip .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Footer ------------------------------------------------------------------ */
.site-footer {
  margin-top: 1rem;
  padding: 3rem 0 3.25rem;
  border-top: 1px solid var(--border);
  background: linear-gradient(to bottom, var(--bg), #d8edfb);
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 720px) {
  .footer-grid {
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 2.5rem;
  }
}

.footer-brand p {
  margin: 0.85rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.75;
  max-width: 36ch;
}

.footer-links h4,
.footer-expertise h4 {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.footer-links ul,
.footer-expertise ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links li + li {
  margin-top: 0.55rem;
}

.footer-links a {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.92rem;
}

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

.footer-expertise li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 0.52rem;
  line-height: 1.6;
}

.footer-expertise li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-warm);
}

.footer-base {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--muted);
}

/* Mobile nav -------------------------------------------------------------- */
@media (max-width: 767px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    inset-inline: 0;
    top: 100%;
    flex-direction: column;
    gap: 0;
    align-items: stretch;
    padding: 0 1rem 1rem;
    background: rgba(240, 248, 255, 0.99);
    border-bottom: 1px solid var(--border);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 0.78rem 0;
    border-bottom: 1px solid var(--border);
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .exp-tab {
    flex: 1 1 calc(50% - 0.5rem);
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }
}

/* Print ------------------------------------------------------------------- */
@media print {
  body {
    background: #fff;
    color: #111;
  }

  .site-header,
  .nav-toggle,
  .skill-toggle,
  .cta-strip .btn,
  .marquee-wrap,
  .skip-link,
  .hero-photo-wrap,
  .exp-tabs {
    display: none !important;
  }

  .hero-split {
    grid-template-columns: 1fr;
  }

  /* Force ALL experience panes to render in print (overrides [hidden]).
     Specificity: .exp-pane[hidden] beats .exp-pane, so target with attribute. */
  .exp-pane,
  .exp-pane[hidden] {
    display: block !important;
    break-inside: avoid;
    page-break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
    margin-bottom: 1rem;
    background: #fff;
    color: #111;
  }

  .skill-extra {
    display: flex !important;
  }
}