/* ==========================================================================
   Keylor Pineda · portfolio
   Bordered boxes with solid offset shadows, a split-flap hero and
   scroll-driven project stories.
   ========================================================================== */

:root {
  --bg: #f3efe6;
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.09'/%3E%3C/svg%3E");
  --c-yellow: #ffc93c;
  --c-coral: #ff7a59;
  --c-mint: #7ed6b2;
  --c-lilac: #a99bff;
  --surface: #ffffff;
  --surface-2: #fbf8f1;
  --ink: #121212;
  --muted: #5a5750;
  --line: #121212;
  --shadow: #121212;
  --accent: #ffc93c;
  --hi: #ffc93c;
  --tile: #161616;
  --tile-ink: #f6f1e4;
  --sticker: #fff8e1;

  --radius: 16px;
  --border: 2px;
  --sh: 6px;
  --spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  color-scheme: light;
}

:root[data-theme='dark'] {
  --bg: #0f0f11;
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.07'/%3E%3C/svg%3E");
  --surface: #17171b;
  --surface-2: #1d1d22;
  --ink: #f6f1e4;
  --muted: #a8a49b;
  --line: #f6f1e4;
  --shadow: #ffc93c;
  --tile: #1f1f25;
  --tile-ink: #f6f1e4;
  --sticker: #2a2416;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  background-color: var(--bg);
  background-image: var(--grain); /* paper grain */
  color: var(--ink);
  font: 400 17px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-display); margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }
.mono { font-family: var(--font-mono); letter-spacing: 0.02em; }
.container { width: min(1200px, 100% - 40px); margin-inline: auto; }

:root[data-theme='dark'] .theme-light,
:root[data-theme='light'] .theme-dark { display: none !important; }

.skip {
  position: fixed; left: 16px; top: -60px; z-index: 100;
  background: var(--hi); color: #121212; padding: 10px 14px; border: var(--border) solid #121212;
  border-radius: 10px; font-weight: 600; text-decoration: none;
}
.skip:focus { top: 16px; }
:focus-visible { outline: 3px solid var(--hi); outline-offset: 3px; border-radius: 6px; }

/* Collage shapes in the margins: same border and solid shadow as the cards. */
.section, .hero { position: relative; isolation: isolate; }
.deco { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.shape { position: absolute; width: var(--s); height: var(--s); }
.shape svg { width: 100%; height: 100%; overflow: visible; filter: drop-shadow(5px 5px 0 var(--shadow)); }
.shape path, .shape circle { fill: var(--c); stroke: var(--line); stroke-width: 3; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.shape .line { fill: none; stroke: var(--c); stroke-width: 9; stroke-linecap: round; vector-effect: none; }
.float { animation: float var(--d, 7s) ease-in-out infinite alternate; transform: rotate(var(--r, 0deg)); }
@keyframes float { from { transform: translateY(0) rotate(var(--r, 0deg)); } to { transform: translateY(-14px) rotate(calc(var(--r, 0deg) + 8deg)); } }
.shape.spin svg { animation: spin 40s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@supports (animation-timeline: view()) {
  .shape { animation: parallax linear both; animation-timeline: view(); }
  @keyframes parallax { from { translate: 0 60px; } to { translate: 0 -60px; } }
}
@media (max-width: 760px) { .shape.lg-only { display: none; } }
main, .nav, .footer { position: relative; z-index: 1; }
/* The tilted tape is wider than the viewport on purpose; clip it without breaking sticky children. */
main { overflow-x: clip; }

/* ---------- the box ---------- */
.box {
  background: var(--surface);
  border: var(--border) solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--sh) var(--sh) 0 var(--shadow);
}

/* ---------- buttons ---------- */
.btn {
  --b-bg: var(--surface);
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; min-height: 48px;
  font: 600 16px/1 var(--font-display); color: var(--ink); text-decoration: none;
  background: var(--b-bg);
  border: var(--border) solid var(--line); border-radius: 12px;
  box-shadow: 4px 4px 0 var(--shadow);
  cursor: pointer;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background-color 0.2s;
}
.btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.btn img { width: 20px; height: 20px; }
:root[data-theme='dark'] .btn img[src*='github'] { filter: invert(1); }
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--shadow); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--shadow); }
.btn-primary { --b-bg: var(--hi); color: #121212; }
:root[data-theme='dark'] .btn-primary { border-color: var(--hi); box-shadow: 4px 4px 0 var(--line); }
:root[data-theme='dark'] .btn-primary:hover { box-shadow: 6px 6px 0 var(--line); }
.btn-xl { min-height: 60px; padding: 16px 24px; font-size: 17px; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 14px; z-index: 50; padding-inline: 20px; margin-top: 14px; }
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; gap: 16px; padding: 10px 12px 10px 12px;
  --sh: 4px;
  border-radius: 14px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; }
.brand-tile {
  display: grid; place-items: center; width: 38px; height: 38px;
  background: var(--tile); color: var(--tile-ink); border-radius: 9px;
  font: 700 15px var(--font-mono); letter-spacing: 0.04em;
  border: var(--border) solid var(--line);
}
.brand-name { font-family: var(--font-display); font-size: 17px; }
.brand-dot { color: var(--muted); }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a {
  text-decoration: none; padding: 8px 12px; border-radius: 9px; font-weight: 500; font-size: 15px;
  transition: background-color 0.2s;
}
.nav-links a:hover, .nav-links a.is-current { background: var(--surface-2); box-shadow: inset 0 0 0 1.5px var(--line); }
.nav-actions { display: flex; gap: 8px; }
.pill-btn, .icon-btn {
  height: 40px; border: var(--border) solid var(--line); background: var(--surface-2); color: var(--ink);
  border-radius: 10px; cursor: pointer; font: 700 13px var(--font-mono);
  transition: transform 0.15s var(--ease), box-shadow 0.15s var(--ease);
  box-shadow: 2px 2px 0 var(--shadow);
}
.pill-btn:hover, .icon-btn:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--shadow); }
.pill-btn:active, .icon-btn:active { transform: translate(2px, 2px); box-shadow: 0 0 0 var(--shadow); }
.pill-btn { padding: 0 12px; display: flex; gap: 4px; align-items: center; }
.pill-btn span { opacity: 0.4; transition: opacity 0.2s; }
:root[lang='en'] .pill-btn [data-lang='en'], :root[lang='es'] .pill-btn [data-lang='es'] { opacity: 1; }
.pill-btn .slash { opacity: 0.3 !important; }
.icon-btn { width: 40px; display: grid; place-items: center; }
.icon-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.i-moon { display: none; }
:root[data-theme='dark'] .i-sun { display: none; }
:root[data-theme='dark'] .i-moon { display: block; fill: currentColor; }

/* ---------- hero ---------- */
.hero {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center;
  padding-block: 72px 56px; min-height: calc(100svh - 80px);
}
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); margin-bottom: 22px; }
/* A small spinning burst, the same shape as the collage stars. */
.spark { width: 20px; height: 20px; flex: none; animation: spin 9s linear infinite; }
.spark path { fill: var(--hi); stroke: var(--ink); stroke-width: 6; stroke-linejoin: round; }

/* Split-flap board */
.board { display: grid; gap: 10px; margin: 0 0 18px; font-size: inherit; }
.board-row { display: flex; gap: clamp(4px, 0.7vw, 8px); }
.flap {
  --w: clamp(42px, 7.4vw, 92px);
  position: relative; display: grid; place-items: center;
  width: var(--w); height: calc(var(--w) * 1.22);
  background: var(--tile); color: var(--tile-ink);
  border: var(--border) solid var(--line); border-radius: calc(var(--w) * 0.12);
  box-shadow: calc(var(--w) * 0.06) calc(var(--w) * 0.06) 0 var(--shadow);
  font: 700 calc(var(--w) * 0.72) / 1 var(--font-display);
  perspective: 300px; overflow: hidden;
}
.flap::before { /* top-half sheen */
  content: ''; position: absolute; inset: 0 0 50% 0; background: linear-gradient(rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
}
.flap::after { /* hinge line */
  content: ''; position: absolute; left: 0; right: 0; top: 50%; height: 2px; transform: translateY(-1px);
  background: rgba(0, 0, 0, 0.45);
}
.flap span { display: block; transform-origin: 50% 50%; }
.flap.tick span { animation: tick 0.07s linear; }
@keyframes tick { 0% { transform: rotateX(0); filter: brightness(1); } 50% { transform: rotateX(-82deg) scaleY(0.9); filter: brightness(0.6); } 100% { transform: rotateX(0); } }
.flap.done { animation: settle 0.5s var(--spring); }
@keyframes settle { 0% { transform: translateY(0); } 35% { transform: translateY(-6px); } 100% { transform: translateY(0); } }
.flap.is-accent { background: var(--hi); color: #121212; }

.roles { margin-bottom: 28px; }
.board-row.small { gap: 3px; }
.board-row.small .flap {
  --w: clamp(14px, 4.3vw, 28px);
  box-shadow: 2px 2px 0 var(--shadow); border-width: 1.5px; border-radius: 5px;
  font: 700 calc(var(--w) * 0.66) / 1 var(--font-mono);
}

.lead { font-size: clamp(18px, 1.7vw, 21px); max-width: 34ch; color: var(--muted); margin-bottom: 28px; }
.lead::first-line { color: var(--ink); }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }
.facts { list-style: none; padding: 0; margin: 36px 0 0; display: flex; flex-wrap: wrap; gap: 12px; }
.facts li {
  display: flex; align-items: baseline; gap: 8px; padding: 10px 14px;
  border: 1.5px dashed var(--line); border-radius: 12px; font-size: 14px; color: var(--muted);
}
.facts strong { font: 700 20px var(--font-display); color: var(--ink); }

/* Deck of project cards */
.deck { position: relative; height: 520px; }
.deck-card {
  position: absolute; width: 74%; text-decoration: none; overflow: hidden; padding: 0;
  --sh: 8px; box-shadow: var(--sh) var(--sh) 0 var(--accent);
  transition: transform 0.6s var(--spring), box-shadow 0.3s var(--ease);
  will-change: transform;
}
.deck-card img { aspect-ratio: 16 / 10; object-fit: cover; object-position: top; width: 100%; border-bottom: var(--border) solid var(--line); }
.deck-card img.fit { object-fit: contain; object-position: center; background: var(--surface-2); padding: 10px; }
.deck-tag {
  position: absolute; top: 10px; left: 10px; z-index: 2; font-size: 11px;
  background: var(--surface); border: 1.5px solid var(--line); border-radius: 7px; padding: 4px 8px;
}
.deck-title { display: block; padding: 12px 16px; font: 700 18px var(--font-display); }
.deck-card.c1 { top: 0; left: 0; transform: translate3d(var(--px, 0), var(--py, 0), 0) rotate(-6deg); z-index: 1; }
.deck-card.c2 { top: 120px; right: 0; transform: translate3d(calc(var(--px, 0) * -1.4), calc(var(--py, 0) * -1.4), 0) rotate(4deg); z-index: 2; }
.deck-card.c3 { bottom: 0; left: 8%; transform: translate3d(calc(var(--px, 0) * 0.8), calc(var(--py, 0) * 0.8), 0) rotate(-2deg); z-index: 3; }
.deck-card:hover { z-index: 5; box-shadow: 12px 12px 0 var(--accent); }
.deck-card.c1:hover { transform: rotate(-3deg) translateY(-10px) scale(1.03); }
.deck-card.c2:hover { transform: rotate(2deg) translateY(-10px) scale(1.03); }
.deck-card.c3:hover { transform: rotate(0deg) translateY(-10px) scale(1.03); }
.deck.intro .deck-card { animation: deal 1s var(--spring) backwards; }
.deck.intro .c1 { animation-delay: 0.9s; }
.deck.intro .c2 { animation-delay: 1.05s; }
.deck.intro .c3 { animation-delay: 1.2s; }
@keyframes deal { from { opacity: 0; translate: 0 120px; rotate: 12deg; } }
.sticker {
  position: absolute; right: -6px; bottom: 34px; z-index: 6;
  background: var(--sticker); border: var(--border) solid var(--line); border-radius: 10px; padding: 8px 12px;
  font-size: 12px; transform: rotate(5deg); box-shadow: 3px 3px 0 var(--shadow);
  animation: bob 4s ease-in-out infinite;
}
.sticker::before { content: ''; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #3fa163; margin-right: 8px; vertical-align: 1px; }
@keyframes bob { 50% { transform: rotate(3deg) translateY(-6px); } }

/* ---------- marquee tape ---------- */
.tape {
  position: relative; z-index: 1; margin: 24px 0 40px;
  border-block: var(--border) solid var(--line); background: var(--hi);
  transform: rotate(-1.6deg) scale(1.03); padding: 10px 0; overflow: hidden;
  display: grid; gap: 8px;
}
.tape-track { display: flex; gap: 12px; width: max-content; animation: marquee 38s linear infinite; }
.tape-track.reverse { animation-direction: reverse; animation-duration: 44s; }
.tape:hover .tape-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; white-space: nowrap;
  background: #fffdf7; color: #121212; border: 1.5px solid #121212; border-radius: 999px;
  font: 600 14px var(--font-display);
}
.chip img { width: 20px; height: 20px; object-fit: contain; }

/* ---------- sections ---------- */
.section { padding-block: 72px; }
.section-head { display: grid; gap: 10px; margin-bottom: 44px; max-width: 760px; }
.section-num {
  justify-self: start; font-size: 13px; padding: 4px 10px; border: 1.5px solid var(--line); border-radius: 8px;
  background: var(--hi); color: #121212;
}
.section-head h2 { font-size: clamp(36px, 5.2vw, 64px); line-height: 1; position: relative; justify-self: start; }
.section-head h2::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0.06em; height: 0.22em; z-index: -1;
  background: var(--hi); opacity: 0.55; transform: scaleX(0); transform-origin: left;
  transition: transform 0.9s var(--ease) 0.2s;
}
.section-head.in h2::after { transform: scaleX(1); }
.section-head p { color: var(--muted); font-size: 18px; max-width: 60ch; }

/* ---------- projects ---------- */
.project {
  display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: start;
  padding-block: 56px; border-top: 1.5px dashed var(--line);
}
.project:first-of-type { border-top: 0; padding-top: 0; }
.project.flip .story { order: 2; }
.project-head { display: grid; gap: 12px; margin-bottom: 18px; }
.kicker { font-size: 13px; color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; filter: saturate(1.2); }
.project h3 { font-size: clamp(34px, 4vw, 52px); line-height: 1.02; }
.status {
  justify-self: start; display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600;
  padding: 6px 12px; border: 1.5px solid var(--line); border-radius: 999px; background: var(--surface);
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent); }
.project-head > p { color: var(--muted); font-size: 18px; }

.step {
  position: relative; padding: 22px 22px 22px 64px; margin: 14px 0; border-radius: 14px;
  border: 1.5px solid transparent;
  transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease), transform 0.4s var(--ease), opacity 0.4s;
  opacity: 0.5;
}
.step.is-active { opacity: 1; background: var(--surface); border-color: var(--line); box-shadow: 4px 4px 0 var(--accent); transform: translateX(4px); }
.step-num {
  position: absolute; left: 18px; top: 22px; width: 30px; height: 30px; display: grid; place-items: center;
  border: 1.5px solid var(--line); border-radius: 8px; font-size: 13px; background: var(--surface-2);
}
.step.is-active .step-num { background: var(--accent); color: #fff; border-color: var(--line); }
.step h4 { font-size: 21px; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 16px; }
.step-shot { display: none; }

.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 26px 0; }
.metrics div { border: var(--border) solid var(--line); border-radius: 12px; padding: 14px; background: var(--surface); box-shadow: 3px 3px 0 var(--accent); }
.metrics dt { font: 700 26px/1.1 var(--font-display); }
.metrics dd { margin: 4px 0 0; font-size: 13px; color: var(--muted); line-height: 1.35; }

.logos { list-style: none; padding: 0; margin: 0 0 26px; display: flex; flex-wrap: wrap; gap: 8px; }
.logos li {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 6px; font-size: 14px; font-weight: 500;
  border: 1.5px solid var(--line); border-radius: 999px; background: var(--surface);
  transition: transform 0.25s var(--spring);
}
.logos li:hover { transform: translateY(-3px) rotate(-1.5deg); }
.logos img { width: 26px; height: 26px; padding: 3px; object-fit: contain; background: #fffdf7; border-radius: 50%; border: 1px solid rgba(18, 18, 18, 0.15); }
.logos img.wide { width: 40px; border-radius: 13px; }

/* Sticky stage with the real screens */
.stage { position: sticky; top: 108px; }
.frame { overflow: hidden; --sh: 10px; box-shadow: var(--sh) var(--sh) 0 var(--accent); }
.frame-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; border-bottom: var(--border) solid var(--line); background: var(--surface-2); }
.frame-bar i { width: 11px; height: 11px; border-radius: 50%; border: 1.5px solid var(--line); }
.frame-bar i:nth-child(1) { background: #ff6159; }
.frame-bar i:nth-child(2) { background: #ffbd2e; }
.frame-bar i:nth-child(3) { background: #28c941; }
.frame-bar span { margin-left: 10px; font-size: 12px; color: var(--muted); }
.shots { position: relative; aspect-ratio: 16 / 10.5; background: var(--surface-2); overflow: hidden; }
.shot {
  position: absolute; inset: 0; margin: 0; display: grid; place-items: center;
  opacity: 0; transform: translateY(8%) scale(0.96); filter: blur(6px);
  transition: opacity 0.6s var(--ease), transform 0.8s var(--spring), filter 0.6s var(--ease);
}
.shot img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }
.shot.contain img { object-fit: contain; padding: clamp(14px, 3vw, 28px); filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 0.12)); }
.shot.is-active { opacity: 1; transform: none; filter: none; }
.shot.is-past { opacity: 0; transform: translateY(-8%) scale(0.96); }

/* Scroll-driven: the frame tilts up into place as the project enters. */
@supports (animation-timeline: view()) {
  .frame { animation: rise linear both; animation-timeline: view(); animation-range: entry 0% cover 30%; }
  @keyframes rise { from { transform: perspective(1200px) rotateX(14deg) translateY(60px) scale(0.92); opacity: 0.4; } to { transform: none; opacity: 1; } }
}

/* ---------- stack ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.tab {
  padding: 10px 16px; border: 1.5px solid var(--line); border-radius: 10px; background: var(--surface);
  font: 600 14px var(--font-display); color: var(--ink); cursor: pointer;
  transition: transform 0.15s var(--ease), box-shadow 0.15s var(--ease), background-color 0.2s;
}
.tab:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--shadow); }
.tab[aria-selected='true'] { background: var(--ink); color: var(--bg); box-shadow: 3px 3px 0 var(--hi); }
.stack-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 16px; }
.tool {
  display: grid; justify-items: center; gap: 12px; padding: 22px 12px 18px; text-align: center;
  font: 600 15px var(--font-display); --sh: 4px;
  transition: transform 0.45s var(--spring), box-shadow 0.25s var(--ease), opacity 0.35s var(--ease);
}
.tool .tool-logo { width: 64px; height: 64px; display: grid; place-items: center; background: #fffdf7; border: 1.5px solid #121212; border-radius: 16px; }
.tool img { width: 38px; height: 38px; object-fit: contain; }
.tool small { font: 500 11px var(--font-mono); color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.tool:hover { transform: translate(-3px, -3px) rotate(-1.5deg); box-shadow: 7px 7px 0 var(--shadow); }
.tool:hover .tool-logo { animation: wiggle 0.5s var(--spring); }
@keyframes wiggle { 30% { transform: rotate(-10deg) scale(1.08); } 60% { transform: rotate(6deg); } }
.tool.is-hidden { display: none; }
.tool.pop { animation: pop 0.5s var(--spring) backwards; }
@keyframes pop { from { opacity: 0; transform: scale(0.6) translateY(20px); } }

/* ---------- certifications ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.cert {
  position: relative; display: grid; grid-template-columns: 84px 1fr; gap: 20px; padding: 24px; padding-right: 110px;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.cert:hover { transform: translate(-3px, -3px); box-shadow: 9px 9px 0 var(--shadow); }
.cert::before { /* ticket perforation */
  content: ''; position: absolute; top: 14px; bottom: 14px; right: 92px; border-left: 2px dashed var(--line); opacity: 0.35;
}
.cert-logo { width: 84px; height: 84px; display: grid; place-items: center; background: #fffdf7; border: 1.5px solid #121212; border-radius: 18px; }
.cert-logo img { width: 52px; height: 52px; object-fit: contain; }
.cert-issuer { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.1em; }
.cert h3 { font-size: 21px; line-height: 1.2; margin: 4px 0 8px; }
.cert-date { font-size: 14px; color: var(--muted); }
.cert-id { font-size: 12px; color: var(--muted); margin-top: 4px; }
.cert-verify {
  position: absolute; right: 18px; top: 50%; transform: translateY(-50%) rotate(-90deg);
  font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em; text-decoration: none;
  padding: 6px 10px; border-radius: 8px; background: var(--hi); color: #121212; border: 1.5px solid #121212;
}
.cert-verify:hover { background: var(--ink); color: var(--bg); }

/* ---------- activity ---------- */
.activity { padding: 18px; display: grid; gap: 16px; }
.activity img { width: 100%; border-radius: 12px; }

/* ---------- learning next ---------- */
.next-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.next { padding: 26px; display: grid; gap: 10px; align-content: start; box-shadow: var(--sh) var(--sh) 0 var(--accent); transition: transform 0.3s var(--spring); }
.next:hover { transform: translateY(-6px) rotate(-1deg); }
.next img, .next svg { width: 52px; height: 52px; padding: 8px; background: #fffdf7; border: 1.5px solid #121212; border-radius: 14px; }
.next svg { fill: none; stroke: #4c9be8; stroke-width: 2.2; stroke-linejoin: round; stroke-linecap: round; }
.next h3 { font-size: 24px; }
.next p { color: var(--muted); font-size: 16px; }

/* ---------- contact ---------- */
.contact { padding: clamp(28px, 6vw, 72px); display: grid; gap: 18px; --sh: 12px; position: relative; overflow: hidden; }
.contact::after {
  content: 'KP'; position: absolute; right: -0.08em; bottom: -0.32em; font: 700 clamp(160px, 26vw, 340px)/1 var(--font-display);
  color: transparent; -webkit-text-stroke: 2px var(--line); opacity: 0.12; pointer-events: none;
}
.contact-title { font-size: clamp(42px, 7vw, 92px); line-height: 0.95; max-width: 12ch; }
.contact p { color: var(--muted); font-size: 19px; max-width: 52ch; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 12px; position: relative; z-index: 1; }
.copy-hint { font-size: 11px; padding: 4px 8px; border-radius: 6px; background: rgba(18, 18, 18, 0.1); text-transform: uppercase; }

.footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding-block: 28px 44px; color: var(--muted); font-size: 14px; }

.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 80; translate: -50% calc(100% + 60px); visibility: hidden;
  background: var(--ink); color: var(--bg); padding: 12px 18px; border-radius: 12px; border: var(--border) solid var(--line);
  box-shadow: 4px 4px 0 var(--hi); font-size: 14px;
  transition: translate 0.5s var(--spring);
}
.toast.show { translate: -50% 0; visibility: visible; }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease), box-shadow 0.6s var(--ease); }
.reveal.box { box-shadow: 0 0 0 var(--shadow); }
.reveal.in { opacity: 1; transform: none; }
.reveal.box.in { box-shadow: var(--sh) var(--sh) 0 var(--shadow); }
.next.reveal.box.in { box-shadow: var(--sh) var(--sh) 0 var(--accent); }

/* ---------- theme switch: circular reveal ---------- */
::view-transition-old(root), ::view-transition-new(root) { animation: none; mix-blend-mode: normal; }
::view-transition-new(root) { animation: reveal-theme 0.42s cubic-bezier(0.4, 0, 0.2, 1); }
::view-transition-group(root) { animation-duration: 0.42s; }
/* While the theme flips, nothing else animates, so the circle stays smooth. */
.theme-switching *, .theme-switching *::before, .theme-switching *::after { transition: none !important; }
@keyframes reveal-theme { from { clip-path: circle(0 at var(--vx, 90%) var(--vy, 5%)); } to { clip-path: circle(150% at var(--vx, 90%) var(--vy, 5%)); } }

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .hero { grid-template-columns: 1fr; min-height: 0; padding-top: 48px; }
  .deck { height: 440px; max-width: 560px; width: 100%; margin-inline: auto; }
  .project, .project.flip { grid-template-columns: 1fr; gap: 0; }
  .project.flip .story { order: 0; }
  .stage { display: none; }
  .step { opacity: 1; padding-left: 22px; padding-top: 64px; background: var(--surface); border-color: var(--line); box-shadow: 4px 4px 0 var(--accent); }
  .step.is-active { transform: none; }
  .step-num { top: 20px; }
  .step-shot { display: block; overflow: hidden; margin: 16px 0 0; --sh: 4px; }
  .step-shot img { width: 100%; max-height: 360px; object-fit: cover; object-position: top; }
  .cert-grid, .next-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-actions { margin-left: auto; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .container { width: min(1200px, 100% - 32px); }
  .nav { padding-inline: 12px; }
  .brand-name { display: none; }
  .deck { height: 340px; }
  .deck-title { font-size: 15px; padding: 8px 12px; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .cert { grid-template-columns: 1fr; padding-right: 24px; padding-bottom: 64px; }
  .cert::before { display: none; }
  .cert-verify { top: auto; bottom: 18px; right: 18px; transform: none; }
  .stack-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px; }
  .section { padding-block: 56px; }
}

/* ==========================================================================
   Scroll-linked motion (variables written by assets/js/motion.js)
   ========================================================================== */

/* Progress line under the nav */
.nav-inner { position: relative; }
.nav-inner::after {
  content: ''; position: absolute; left: 14px; right: 14px; bottom: -2px; height: 3px; border-radius: 3px;
  background: var(--hi); transform-origin: left center; transform: scaleX(var(--sp, 0));
}

/* Hero exit: the copy lifts away, the deck tips back into the page */
.hero-copy { transform-origin: 0 0; will-change: transform, opacity;
  transform: translateY(calc(var(--hx, 0) * -48px)) scale(calc(1 - var(--hx, 0) * 0.06));
  opacity: calc(1.15 - var(--hx, 0) * 1.3); }
.deck { transform-origin: 50% 100%; will-change: transform, opacity;
  transform: perspective(1100px) translateY(calc(var(--hx, 0) * 70px)) rotateX(calc(var(--hx, 0) * 24deg)) scale(calc(1 - var(--hx, 0) * 0.12));
  opacity: calc(1.1 - var(--hx, 0) * 1.1); }

/* Headings rise word by word out of a slot */
.split .w { display: inline-block; overflow: hidden; vertical-align: top; padding-bottom: 0.1em; margin-bottom: -0.1em; }
.split .w > span { display: inline-block; transform: translateY(110%); transition: transform 0.95s cubic-bezier(0.2, 0.9, 0.2, 1) calc(var(--i, 0) * 70ms); }
.in .split .w > span, .split.shown .w > span { transform: none; }

/* The tape leans with scroll speed */
.tape { transform: rotate(-1.6deg) scale(1.03) skewX(var(--skew, 0deg)); }

/* Image curtain on the inline screenshots */
.step-shot img { clip-path: inset(100% 0 0 0); transform: scale(1.18); transition: clip-path 0.9s cubic-bezier(0.22, 1, 0.36, 1), transform 1.3s var(--ease); }
.step-shot.shown img { clip-path: inset(0 0 0 0); transform: none; }

@media (max-width: 1020px) {
  /* Phones and tablets: the hero copy fades late, the deck rises from a tilt into place */
  .hero-copy { transform: translateY(calc(var(--hx, 0) * -30px)); opacity: calc(1.3 - var(--hx, 0) * 1.6); }
  .deck { opacity: 1; transform-origin: 50% 0;
    transform: perspective(900px) rotateX(clamp(0deg, calc((0.5 - var(--hx, 0)) * 44deg), 22deg)) scale(clamp(0.88, calc(0.88 + var(--hx, 0) * 0.26), 1)); }
  /* Step cards stack like a deck: each one sticks, and shrinks as the next slides over it */
  .story .step, .story .step.is-active {
    position: sticky; top: calc(88px + var(--k, 0) * 14px);
    transform: scale(calc(1 - var(--cover, 0) * 0.08)); transform-origin: 50% 0;
    filter: brightness(calc(1 - var(--cover, 0) * 0.22));
    margin-bottom: 22px;
  }
  .story .step-shot img { max-height: min(320px, 30svh); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-copy, .deck { transform: none !important; opacity: 1 !important; }
  .step-shot img { clip-path: none !important; transform: none !important; }
  .split .w > span { transform: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
  .shot { filter: none; }
}

@media (max-width: 560px) {
  .contact-actions .btn { flex: 1 1 auto; justify-content: center; }
  #copy-email { width: 100%; font-size: 15px; padding-inline: 14px; }
  #copy-email span:not(.copy-hint) { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .copy-hint { display: none; }
}