/* ================================================================
   ANDY AMPONSAH — PORTFOLIO
   Impeccable, Animate, Delight, Polish, Colorize skills applied
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@300;400;600;700;800;900&family=Barlow:wght@400;500;600&display=swap');

/* ================================================================
   DESIGN TOKENS  (OKLCH — perceptually uniform)
   ================================================================ */
:root {
  /* Palette: Warm cream base, amber accent — hue 75 */
  --hue: 75;

  /* Surfaces — warm neutrals tinted toward amber */
  --bg:            oklch(0.98 0.008 var(--hue));
  --bg-section:    oklch(0.95 0.010 var(--hue));
  --bg-ink:        oklch(0.11 0.012 var(--hue));   /* near-black CTA section */

  /* Borders */
  --border:        oklch(0.88 0.008 var(--hue));
  --border-hi:     oklch(0.78 0.012 var(--hue));

  /* Text */
  --t-hi:   oklch(0.12 0.012 var(--hue));
  --t-mid:  oklch(0.40 0.010 var(--hue));
  --t-lo:   oklch(0.58 0.008 var(--hue));
  --t-inv:  oklch(0.97 0.005 var(--hue));   /* on dark backgrounds */

  /* Accent — electric amber, 10% usage max */
  --accent:     oklch(0.75 0.17 85);
  --accent-hi:  oklch(0.62 0.16 85);
  --accent-bg:  oklch(0.95 0.06 85);

  /* Fonts */
  --f-display: 'Barlow Condensed', sans-serif;
  --f-body:    'Barlow', sans-serif;

  /* Fluid type — clamp(min, viewport, max) */
  --t-xs:  clamp(0.6875rem, 0.65rem + 0.2vw,  0.75rem);
  --t-sm:  clamp(0.875rem,  0.82rem + 0.25vw, 0.9375rem);
  --t-md:  clamp(1rem,      0.94rem + 0.3vw,  1.0625rem);
  --t-lg:  clamp(1.125rem,  1rem    + 0.6vw,  1.375rem);
  --t-xl:  clamp(1.5rem,    1.1rem  + 2vw,    2.25rem);
  --t-2xl: clamp(2.25rem,   1.3rem  + 4.5vw,  4rem);
  --t-3xl: clamp(3.5rem,    1.5rem  + 10vw,   8rem);  /* hero display */

  /* 4pt spacing */
  --s1:  0.25rem;
  --s2:  0.5rem;
  --s3:  0.75rem;
  --s4:  1rem;
  --s6:  1.5rem;
  --s8:  2rem;
  --s12: 3rem;
  --s16: 4rem;
  --s24: 6rem;

  /* Easings */
  --expo: cubic-bezier(0.16, 1, 0.3, 1);
  --quart: cubic-bezier(0.25, 1, 0.5, 1);
}

/* ================================================================
   RESET
   ================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--t-hi);
  font-family: var(--f-body);
  font-size: var(--t-md);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, video { display: block; max-width: 100%; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: var(--bg); }

/* ================================================================
   LAYOUT
   ================================================================ */
.wrap {
  width: min(100% - var(--s8), 1200px);
  margin-inline: auto;
}

/* ================================================================
   TYPE
   ================================================================ */
.display {
  font-family: var(--f-display);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  font-size: var(--t-3xl);
  font-variant-numeric: tabular-nums;
}

.eyebrow {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--t-lo);
}

/* ================================================================
   SCROLL REVEAL (animate skill)
   ================================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity  700ms var(--expo),
    transform 700ms var(--expo);
  transition-delay: var(--delay, 0ms);
}
[data-reveal="left"] {
  transform: translateX(-28px);
}
[data-reveal="fade"] {
  transform: none;
}
[data-reveal].in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* Word reveal — each word clipped by overflow:hidden parent */
.word-clip {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
  line-height: 0.92;
}
.word-clip > span {
  display: inline-block;
  transform: translateY(105%);
  animation: word-up 900ms var(--expo) both;
  animation-delay: var(--wd, 0ms);
}
@keyframes word-up {
  to { transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .word-clip > span { animation: none; transform: none; }
}

/* ================================================================
   BUTTONS  (delight: press feedback)
   ================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s2);
  min-height: 48px;
  padding: var(--s3) var(--s8);
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background 200ms var(--quart),
    color 200ms var(--quart),
    transform 200ms var(--expo),
    box-shadow 200ms var(--quart);
}
/* Delight: satisfying press */
.btn:active { transform: translateY(1px) scale(0.98); }

.btn-dark {
  background: var(--t-hi);
  color: var(--bg);
}
.btn-dark:hover {
  background: var(--accent-hi);
  color: var(--bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px oklch(0.62 0.16 85 / 0.20);
}

.btn-outline {
  background: transparent;
  color: var(--t-hi);
  box-shadow: inset 0 0 0 1.5px var(--border-hi);
}
.btn-outline:hover {
  box-shadow: inset 0 0 0 1.5px var(--t-hi);
}

.btn-amber {
  background: var(--accent);
  color: var(--bg);
}
.btn-amber:hover {
  background: var(--accent-hi);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px oklch(0.62 0.16 85 / 0.25);
}

/* White (on dark backgrounds) */
.btn-white {
  background: var(--bg);
  color: var(--t-hi);
}
.btn-white:hover {
  background: var(--accent);
  color: var(--bg);
  transform: translateY(-2px);
}
.btn-ghost-white {
  background: transparent;
  color: var(--t-inv);
  box-shadow: inset 0 0 0 1.5px oklch(1 0 0 / 0.20);
}
.btn-ghost-white:hover { box-shadow: inset 0 0 0 1.5px oklch(1 0 0 / 0.5); }

/* ================================================================
   NAV
   ================================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(0.98 0.008 var(--hue) / 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s4);
  padding-block: var(--s4);
}

.nav-logo {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-lg);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--t-hi);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s6);
}

.nav-links a {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-xs);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--t-mid);
  transition: color 150ms;
}
.nav-links a:hover { color: var(--t-hi); }
/* Ensure btn overrides nav-links color rule */
.nav-links a.btn-dark         { color: oklch(0.98 0.005 75); }
.nav-links a.btn-dark:hover   { color: oklch(0.98 0.005 75); }

@media (max-width: 640px) {
  .nav-links .hide-sm { display: none; }
}

/* ================================================================
   HERO
   ================================================================ */
.hero {
  padding-top: var(--s16);
  padding-bottom: var(--s16);
  border-bottom: 1px solid var(--border);
  overflow: hidden; /* clip word animations */
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s12);
}

@media (min-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr 340px;
    align-items: end;
    gap: var(--s16);
  }
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--s4);
  margin-bottom: var(--s8);
}

.eyebrow-bar {
  display: block;
  width: 32px;
  height: 2px;
  background: var(--accent);
  transform-origin: left;
  animation: bar-grow 600ms var(--expo) 200ms both;
}
@keyframes bar-grow {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

.hero-title {
  margin-bottom: var(--s8);
}

/* accent word */
.hero-title .color { color: var(--accent); }

.hero-sub {
  font-size: var(--t-lg);
  color: var(--t-mid);
  max-width: 52ch;
  line-height: 1.6;
  margin-bottom: var(--s8);
  font-weight: 400;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s3);
}

/* Hero right column: metrics */
.hero-metrics {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.metric {
  background: var(--bg);
  padding: var(--s6);
  display: flex;
  flex-direction: column;
  gap: var(--s1);
  transition: background 300ms var(--quart);
}
.metric:hover { background: var(--accent-bg); }

.metric-num {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-2xl);
  color: var(--accent-hi);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.metric-label {
  font-size: var(--t-xs);
  color: var(--t-lo);
  line-height: 1.4;
}

/* ================================================================
   TICKER  (delight: kinetic energy)
   ================================================================ */
.ticker-wrap {
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-section);
  padding-block: var(--s3);
}

.ticker-track {
  display: flex;
  gap: var(--s8);
  width: max-content;
  animation: ticker-scroll 35s linear infinite;
}
.ticker-track:hover { animation-play-state: paused; }

@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.ticker-item {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--t-lo);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--s8);
}
.ticker-item::after {
  content: '·';
  color: var(--accent);
  font-size: var(--t-xl);
  line-height: 0.5;
}

/* ================================================================
   SECTION HEAD
   ================================================================ */
.sec-head {
  display: flex;
  align-items: baseline;
  gap: var(--s4);
  padding-bottom: var(--s6);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--s12);
}

.sec-num {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-xs);
  letter-spacing: 0.10em;
  color: var(--accent);
}

.sec-title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-xl);
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

/* ================================================================
   EXPERIENCE
   ================================================================ */
#experience { padding-block: var(--s24); }

.exp-list { display: flex; flex-direction: column; }

.exp-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s4) var(--s8);
  padding-block: var(--s8);
  border-bottom: 1px solid var(--border);
  container-type: inline-size;
  transition: background 300ms var(--quart);
}
.exp-item:hover { background: var(--bg-section); }

@container (min-width: 520px) {
  .exp-item { grid-template-columns: 200px 1fr; }
}

.exp-meta { display: flex; flex-direction: column; gap: var(--s2); min-width: 0; }

.exp-date {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-xs);
  color: var(--t-lo);
  letter-spacing: 0.06em;
}
.exp-company {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-lg);
  color: var(--t-hi);
  line-height: 1.1;
}
.exp-role {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-hi);
}

.exp-body h3 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--t-xl);
  letter-spacing: -0.01em;
  margin-bottom: var(--s3);
}
.exp-body p {
  font-size: var(--t-md);
  color: var(--t-mid);
  line-height: 1.7;
  max-width: 66ch;
}

/* ================================================================
   PROJECTS
   ================================================================ */
#projects {
  padding-block: var(--s24);
  background: var(--bg-section);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--s6);
}

.proj-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: var(--s8);
  display: flex;
  flex-direction: column;
  gap: var(--s4);
  min-width: 0;
  cursor: pointer;
  transition:
    border-color 250ms var(--quart),
    transform 400ms var(--expo),
    box-shadow 400ms var(--expo);
}
.proj-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 16px 40px oklch(0.12 0.012 75 / 0.08);
}

.proj-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--s1) var(--s3);
  font-family: var(--f-display);
  font-size: var(--t-xs);
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent-hi);
  background: var(--accent-bg);
  border-radius: 3px;
  align-self: flex-start;
}

.proj-card h3 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--t-xl);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.proj-card p {
  font-size: var(--t-md);
  color: var(--t-mid);
  line-height: 1.65;
  flex: 1;
}

.proj-link {
  display: inline-flex;
  align-items: center;
  gap: var(--s2);
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-hi);
  margin-top: auto;
  transition: gap 200ms var(--quart);
}
.proj-card:hover .proj-link { gap: var(--s3); }

.proj-arrow {
  display: inline-block;
  transition: transform 200ms var(--quart);
}
.proj-card:hover .proj-arrow { transform: translate(3px, -3px); }

/* ================================================================
   EDUCATION + CERTIFICATIONS
   ================================================================ */
#education { padding-block: var(--s24); }

.edu-certs {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s16);
}
@media (min-width: 768px) {
  .edu-certs { grid-template-columns: 1fr 1fr; }
}

.sub-section-label {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--s6);
}

.edu-list { display: flex; flex-direction: column; }
.edu-item {
  padding-block: var(--s6);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--s2);
}
.edu-period {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-xs);
  color: var(--t-lo);
  letter-spacing: 0.06em;
}
.edu-item h4 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--t-lg);
  letter-spacing: -0.01em;
}
.edu-item p { font-size: var(--t-sm); color: var(--t-mid); }

/* Certs list */
.certs-list { display: flex; flex-direction: column; }
.cert-row {
  display: flex;
  align-items: center;
  gap: var(--s4);
  padding-block: var(--s4);
  border-bottom: 1px solid var(--border);
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-md);
  color: var(--t-hi);
  letter-spacing: 0.01em;
  transition: color 200ms;
}
.cert-row:hover { color: var(--accent-hi); }

.cert-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* Skills chips */
.chips-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
}
.chip {
  display: inline-flex;
  align-items: center;
  padding: var(--s2) var(--s3);
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--t-mid);
  border: 1px solid var(--border);
  border-radius: 3px;
  white-space: nowrap;
  background: var(--bg);
  transition: border-color 200ms, color 200ms;
}
.chip:hover { border-color: var(--accent); color: var(--accent-hi); }

/* ================================================================
   CONTACT CTA  (dark section — delight, colorize)
   ================================================================ */
.cta {
  background: var(--bg-ink);
  padding-block: var(--s24);
}

.cta-inner {
  display: flex;
  flex-direction: column;
  gap: var(--s8);
}
@media (min-width: 640px) {
  .cta-inner {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

.cta-heading {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-2xl);
  line-height: 0.92;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--t-inv);
  max-width: 14ch;
}

.cta-heading .accent { color: var(--accent); }

.cta-aside {
  display: flex;
  flex-direction: column;
  gap: var(--s4);
  align-items: flex-start;
}
@media (min-width: 640px) {
  .cta-aside { align-items: flex-end; }
}

.cta-detail {
  font-size: var(--t-sm);
  color: oklch(0.65 0.008 var(--hue));
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s3);
}

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
  padding-block: var(--s8);
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
}
@media (min-width: 640px) {
  .footer-inner { flex-direction: row; justify-content: space-between; align-items: center; }
}

.footer-inner p {
  font-size: var(--t-xs);
  color: var(--t-lo);
}

.footer-links {
  display: flex;
  gap: var(--s6);
  flex-wrap: wrap;
}
.footer-links a {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--t-lo);
  transition: color 150ms;
}
.footer-links a:hover { color: var(--accent-hi); }