/* Zenithy homepage visual system.
   This file only affects portal/site/index.html and keeps Blog/Admin isolated. */

:root {
  /* Color tokens */
  --surface: #f7f7f3;
  --surface-low: #eeeeea;
  --surface-card: rgba(255, 255, 252, 0.88);
  --surface-soft: rgba(255, 255, 252, 0.72);
  --surface-ink: #0d1110;
  --text: #222725;
  --text-strong: #0b0f0e;
  --text-muted: #686f6c;
  --text-faint: #a8ada8;
  --accent: #111514;
  --accent-deep: #0b0f0e;
  --accent-soft: rgba(13, 17, 16, 0.055);
  --line-soft: rgba(13, 17, 16, 0.08);
  --line-strong: rgba(13, 17, 16, 0.16);

  /* Spacing, radius, shadow tokens */
  --space-section: clamp(92px, 12vw, 168px);
  --space-card: clamp(26px, 4vw, 46px);
  --radius-panel: 38px;
  --radius-card: 30px;
  --radius-soft: 22px;
  --radius-pill: 999px;
  --shadow-soft: 0 24px 80px rgba(13, 17, 16, 0.06);
  --shadow-hover: 0 34px 110px rgba(13, 17, 16, 0.105);
  --border-card: 1px solid rgba(13, 17, 16, 0.075);

  /* Typography tokens */
  --font-display: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --track-tight: -0.065em;
  --track-meta: 0.16em;
}

html {
  background: var(--surface);
  overflow-x: clip;
}

body {
  font-family: var(--font-display);
  color: var(--text);
  overflow-x: clip;
  background:
    radial-gradient(circle at 50% -10%, rgba(13, 17, 16, 0.08), transparent 32%),
    radial-gradient(circle at 8% 18%, rgba(13, 17, 16, 0.035), transparent 24%),
    linear-gradient(180deg, #fbfbf7 0%, var(--surface) 46%, #f1f1ec 100%);
}

body::before {
  background-image:
    radial-gradient(circle, rgba(13, 17, 16, 0.18) 1px, transparent 1.2px),
    linear-gradient(rgba(13, 17, 16, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 17, 16, 0.025) 1px, transparent 1px);
  background-position: 0 0, 0 0, 0 0;
  background-size: 22px 22px, 96px 96px, 96px 96px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.32), rgba(0, 0, 0, 0.08) 48%, transparent 82%);
  opacity: 0.34;
}

.page::before,
.page::after {
  content: "";
  position: fixed;
  z-index: -1;
  pointer-events: none;
  border-radius: 999px;
  filter: blur(4px);
}

.page::before {
  width: min(44vw, 540px);
  height: min(44vw, 540px);
  top: 120px;
  right: -220px;
  background: radial-gradient(circle, rgba(13, 17, 16, 0.08), transparent 62%);
}

.page::after {
  width: min(32vw, 420px);
  height: min(32vw, 420px);
  left: -180px;
  bottom: 10vh;
  border: 1px solid rgba(13, 17, 16, 0.1);
}

.shell {
  width: min(var(--max-width), calc(100% - 48px));
}

/* Topbar */
.topbar-wrap {
  background: rgba(247, 247, 243, 0.74);
  border-bottom: 1px solid rgba(13, 17, 16, 0.06);
  box-shadow: none;
}

.brand-mark {
  width: 20px;
  height: 20px;
  border-radius: 7px;
  background: transparent;
  object-fit: contain;
}

.brand-name {
  font-size: 12px;
  letter-spacing: 0.08em;
}

.topnav {
  gap: clamp(18px, 3vw, 40px);
}

.topnav a,
.topnav button {
  color: #777e79;
  font-size: 10px;
  letter-spacing: 0.18em;
}

.topnav a.is-active,
.topnav button.is-active {
  color: var(--text-strong);
}

.topnav a.is-active::after,
.topnav button.is-active::after {
  bottom: -10px;
  height: 1px;
  background: var(--text-strong);
}

.action-circle {
  background: rgba(255, 255, 252, 0.74);
  box-shadow: inset 0 0 0 1px var(--line-soft);
}

/* Hero and section typography */
.hero {
  position: relative;
  min-height: clamp(680px, 92vh, 900px);
  padding-top: clamp(94px, 12vh, 132px);
  overflow: hidden;
  overflow-x: clip;
  --hero-orb-x: 80%;
  --hero-orb-y: 19%;
  --hero-title-mask-x: 80%;
  --hero-title-mask-y: 19%;
  --hero-title-left: 0px;
  --hero-title-top: 0px;
  --hero-title-width: 100%;
  --hero-title-height: 100%;
  --hero-pointer-x: 80%;
  --hero-pointer-y: 22%;
  --hero-orb-size: clamp(120px, 10.5vw, 210px);
  --hero-reveal-y: -0.12em;
  --hero-rotate-x: 0deg;
  --hero-rotate-y: 0deg;
  --hero-depth-leading: 126px;
  --hero-depth-name: 56px;
}

.hero-inner {
  position: relative;
  z-index: 1;
  isolation: isolate;
  gap: 10px;
}

.hero-interaction-plane {
  position: relative;
  display: grid;
  align-content: center;
  justify-items: center;
  width: min(124vw, 1760px);
  max-width: none;
  margin-left: calc(50% - min(62vw, 880px));
  margin-right: calc(50% - min(62vw, 880px));
  min-height: clamp(540px, 72vh, 740px);
  padding: clamp(34px, 5.6vw, 68px) 0 clamp(18px, 2.8vw, 34px);
  perspective: 1750px;
  isolation: isolate;
  overflow: visible;
}

.hero-effects-layer {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 100vw;
  max-width: 100vw;
  z-index: 2;
  pointer-events: none;
  overflow: visible;
  transform: translateX(-50%);
}

.eyebrow,
.section-kicker,
.card-index,
.status,
.footer-meta {
  letter-spacing: var(--track-meta);
}

.eyebrow {
  background: rgba(13, 17, 16, 0.045);
  color: var(--text-strong);
  border: 1px solid rgba(13, 17, 16, 0.06);
}

.hero-title-system {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  max-width: min(112vw, 1500px);
  margin-inline: auto;
  min-height: clamp(156px, 18.6vw, 286px);
  perspective: 1750px;
  transform-style: preserve-3d;
  outline: none;
  cursor: default;
}

.hero-title-stack {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  max-width: min(112vw, 1500px);
  margin-inline: auto;
  transform-style: preserve-3d;
}

.hero .hero-title {
  grid-area: 1 / 1;
  margin: 0;
  width: 100%;
  max-width: min(112vw, 1500px);
  font-size: clamp(64px, 9vw, 150px);
  line-height: 0.78;
  letter-spacing: -0.108em;
  text-align: center;
}

.hero-title-base {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: clamp(8px, 1.4vw, 24px);
  color: var(--text-strong);
  transform:
    perspective(1750px)
    rotateX(var(--hero-rotate-x))
    rotateY(var(--hero-rotate-y))
    translateZ(48px);
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform 0.18s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.hero-title-leading {
  display: inline-flex;
  align-items: baseline;
  gap: clamp(6px, 0.8vw, 14px);
  font-weight: 1000;
  letter-spacing: -0.112em;
  text-transform: uppercase;
  transform: translateY(-0.025em) translateZ(var(--hero-depth-leading));
  transform-style: preserve-3d;
}

.hero-title-part {
  display: inline-block;
  transform-style: preserve-3d;
}

.hero-title-part--im {
  transform: translateY(0.01em) translateZ(18px);
}

.hero-title-name {
  display: inline-block;
  font-size: 0.86em;
  font-weight: 300;
  letter-spacing: -0.145em;
  color: rgba(8, 10, 12, 0.92);
  transform: translateX(0.018em) translateY(0.11em) translateZ(var(--hero-depth-name)) rotateZ(-0.6deg);
  transform-style: preserve-3d;
}

.hero-title-reveal {
  position: absolute;
  z-index: 3;
  left: var(--hero-title-left);
  top: var(--hero-title-top);
  display: grid;
  place-items: center;
  width: var(--hero-title-width);
  height: var(--hero-title-height);
  max-width: none;
  color: #fff;
  font-weight: 780;
  pointer-events: none;
  opacity: 0;
  clip-path: circle(0 at var(--hero-title-mask-x) var(--hero-title-mask-y));
  will-change: clip-path, opacity;
  transition:
    opacity 0.42s ease,
    clip-path 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.hero-title-reveal-text {
  display: inline-block;
  color: #fff;
  font-size: clamp(48px, 8vw, 132px);
  line-height: 0.86;
  letter-spacing: -0.075em;
  transform:
    perspective(1750px)
    rotateX(var(--hero-rotate-x))
    rotateY(var(--hero-rotate-y))
    translateY(var(--hero-reveal-y))
    translateZ(162px);
  transform-style: preserve-3d;
  white-space: nowrap;
  will-change: transform;
}

.hero-title-reveal-text {
  text-shadow:
    0 12px 42px rgba(0, 0, 0, 0.28),
    0 0 1px rgba(255, 255, 255, 0.82);
  filter: drop-shadow(0 18px 38px rgba(0, 0, 0, 0.38));
}

.hero.is-hero-active .hero-title-reveal,
.hero-interaction-plane:focus-within .hero-title-reveal {
  opacity: 1;
  clip-path: circle(calc(var(--hero-orb-size) / 2) at var(--hero-title-mask-x) var(--hero-title-mask-y));
}

.hero-orb {
  position: absolute;
  z-index: 2;
  left: var(--hero-orb-x);
  top: var(--hero-orb-y);
  width: var(--hero-orb-size);
  height: var(--hero-orb-size);
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 26%, rgba(255, 255, 255, 0.16), transparent 18%),
    radial-gradient(circle at 70% 76%, rgba(255, 255, 255, 0.1), transparent 22%),
    #050606;
  box-shadow:
    0 38px 96px rgba(13, 17, 16, 0.24),
    inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  transform: translate(-50%, -50%) scale(0.88);
  opacity: 1;
  pointer-events: none;
  will-change: left, top, transform;
  animation: heroOrbEnter 1.1s cubic-bezier(0.2, 0.8, 0.2, 1) 0.22s forwards;
}

.hero.is-orb-disabled .hero-orb {
  display: none;
}

.hero-meta-line,
.hero-divider {
  opacity: 0;
  transform: translateY(14px);
  animation: heroContentReveal 0.82s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.hero-meta-line {
  margin: clamp(8px, 1.2vw, 15px) 0 0;
  color: rgba(78, 84, 82, 0.74);
  font-size: clamp(11px, 0.95vw, 14px);
  font-weight: 760;
  letter-spacing: 0.13em;
  animation-delay: 0.28s;
}

.hero-divider {
  height: 92px;
  background: linear-gradient(180deg, rgba(13, 17, 16, 0.18), rgba(13, 17, 16, 0));
  animation-delay: 0.56s;
}

.section-block,
.showcase {
  padding-bottom: var(--space-section);
}

.section-heading {
  gap: 18px;
  margin-bottom: clamp(28px, 5vw, 54px);
}

.section-kicker {
  color: var(--text-strong);
  font-size: 10px;
}

.section-heading h2 {
  max-width: 860px;
  color: var(--text-strong);
  font-size: clamp(42px, 6vw, 78px);
  letter-spacing: var(--track-tight);
}

.section-heading p {
  max-width: 680px;
  color: var(--text-muted);
  font-size: 16px;
}

.showcase-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.showcase-heading-copy {
  display: grid;
  gap: inherit;
  min-width: 0;
  flex: 1 1 auto;
}

.showcase-controls {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.showcase-control {
  width: 44px;
  height: 44px;
  border: 0;
  cursor: pointer;
}

.showcase-control[disabled] {
  opacity: 0.38;
  cursor: not-allowed;
  box-shadow: inset 0 0 0 1px rgba(13, 17, 16, 0.06);
}

.showcase-control[disabled]:hover {
  transform: none;
  box-shadow: inset 0 0 0 1px rgba(13, 17, 16, 0.06);
}

.showcase-scroller {
  position: relative;
  overflow-x: auto;
  overflow-y: visible;
  margin-inline: -4px;
  padding: 4px 4px 18px;
  scroll-behavior: smooth;
  scroll-snap-type: x proximity;
  cursor: grab;
  scrollbar-width: thin;
  scrollbar-color: rgba(13, 17, 16, 0.24) rgba(13, 17, 16, 0.06);
}

.showcase-scroller.is-drag-ready,
.showcase-scroller.is-dragging {
  user-select: none;
}

.showcase-scroller.is-dragging {
  cursor: grabbing;
  scroll-snap-type: none;
}

.showcase-scroller.is-dragging * {
  cursor: grabbing !important;
}

.showcase-scroller::-webkit-scrollbar {
  height: 10px;
}

.showcase-scroller::-webkit-scrollbar-track {
  background: rgba(13, 17, 16, 0.06);
  border-radius: 999px;
}

.showcase-scroller::-webkit-scrollbar-thumb {
  background: rgba(13, 17, 16, 0.22);
  border-radius: 999px;
}

.showcase-scroller[data-has-overflow="false"]::-webkit-scrollbar {
  height: 0;
}

.showcase-scroller:focus-visible {
  outline: 2px solid rgba(13, 17, 16, 0.18);
  outline-offset: 8px;
  border-radius: 28px;
}

/* Buttons */
.button {
  min-height: 52px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.01em;
  box-shadow: none;
}

.button-primary {
  background: var(--surface-ink);
  color: #fff;
}

.button-primary:hover {
  background: #000;
}

.button-secondary,
.button-soft {
  background: rgba(255, 255, 252, 0.74);
  color: var(--text-strong);
  box-shadow: inset 0 0 0 1px var(--line-soft);
}

.button-secondary:hover,
.button-soft:hover {
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

/* Card system */
.showcase-grid,
.insight-grid,
.about-panel {
  gap: 22px;
}

.showcase-card,
.skill-card,
.insight-card,
.about-card,
.contact-card {
  border: var(--border-card);
  background:
    linear-gradient(180deg, rgba(255, 255, 252, 0.94), rgba(255, 255, 252, 0.78)),
    var(--surface-card);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
}

#projects-grid.showcase-grid--rail,
.showcase-scroller .showcase-grid--rail {
  display: flex;
  flex-wrap: nowrap;
  align-items: stretch;
  align-content: stretch;
  gap: 22px;
  width: max-content;
  min-width: 100%;
  grid-template-columns: none;
}

.showcase-card {
  --card-tilt-x: 0deg;
  --card-tilt-y: 0deg;
  --card-lift: 0px;
  --card-glow-x: 50%;
  --card-glow-y: 28%;
  position: relative;
  min-height: 650px;
  padding: var(--space-card);
  overflow: hidden;
  transform-style: preserve-3d;
}

.showcase-grid--rail .showcase-card {
  flex: 0 0 clamp(430px, 42vw, 620px);
  width: clamp(430px, 42vw, 620px);
  scroll-snap-align: start;
}

.showcase-grid--rail .showcase-card--small {
  flex-basis: clamp(410px, 40vw, 560px);
  width: clamp(410px, 40vw, 560px);
}

.showcase-grid--rail .showcase-card--large {
  flex-basis: clamp(500px, 47vw, 700px);
  width: clamp(500px, 47vw, 700px);
}

.showcase-card::before,
.skill-card::before,
.insight-card::before,
.about-card::before,
.contact-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.68), transparent 30%),
    radial-gradient(circle at 85% 8%, rgba(13, 17, 16, 0.05), transparent 28%);
}

.showcase-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  border-radius: inherit;
  background:
    radial-gradient(circle at var(--card-glow-x) var(--card-glow-y), rgba(255, 255, 255, 0.78), transparent 22%),
    linear-gradient(125deg, transparent 20%, rgba(13, 17, 16, 0.045), transparent 54%);
  opacity: 0;
  transition: opacity 0.36s ease;
}

.showcase-card > * {
  position: relative;
  z-index: 1;
}

.showcase-card[data-tilt-ready] {
  transform:
    perspective(1100px)
    rotateX(var(--card-tilt-x))
    rotateY(var(--card-tilt-y))
    translate3d(0, var(--card-lift), 0);
  transform-origin: center;
  will-change: transform;
  transition:
    transform 0.64s cubic-bezier(0.2, 0.8, 0.2, 1),
    box-shadow 0.36s ease,
    border-color 0.36s ease;
}

.showcase-card[data-tilt-ready].is-tilting {
  transition:
    transform 0.08s linear,
    box-shadow 0.26s ease,
    border-color 0.26s ease;
  border-color: rgba(13, 17, 16, 0.12);
  box-shadow: 0 34px 90px rgba(13, 17, 16, 0.13);
}

.showcase-card[data-tilt-ready].is-tilting::after {
  opacity: 1;
}

.showcase-card [data-tilt-layer] {
  transform: translate3d(0, 0, 0);
  will-change: transform;
  transition: transform 0.58s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.showcase-card.is-tilting [data-tilt-layer] {
  transition-duration: 0.08s;
}

.insight-card,
.about-card,
.contact-card {
  position: relative;
  overflow: hidden;
}

.showcase-card:hover,
.skill-card:hover,
.insight-card:hover {
  transform: translateY(-5px);
}

.showcase-card[data-tilt-ready]:hover {
  --card-lift: -5px;
  transform:
    perspective(1100px)
    rotateX(var(--card-tilt-x))
    rotateY(var(--card-tilt-y))
    translate3d(0, var(--card-lift), 0);
}

.button:active,
.action-circle:active {
  transform: translateY(0) scale(0.985);
}

.is-reveal {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 0.72s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.72s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}

.is-reveal:not(.is-visible) {
  opacity: 0;
  transform: translateY(28px);
}

.showcase-card.is-reveal:not(.is-visible),
.skill-card.is-reveal:not(.is-visible),
.insight-card.is-reveal:not(.is-visible) {
  transform: translateY(34px) scale(0.985);
}

.showcase-card--small .card-layout {
  grid-template-columns: 1fr;
}

.showcase-card--small .visual-panel--dashboard {
  aspect-ratio: 16 / 9;
}

.card-icon-wrap {
  background: rgba(13, 17, 16, 0.035);
  box-shadow: inset 0 0 0 1px var(--line-soft);
}

.card-icon-wrap svg {
  stroke: var(--text-strong);
}

.card-title-group h2 {
  font-size: clamp(34px, 4.2vw, 50px);
  letter-spacing: -0.055em;
}

.card-title-group .project-english {
  color: var(--text-muted);
  letter-spacing: 0.18em;
}

.project-badge {
  display: inline-flex;
  width: fit-content;
  min-height: 24px;
  align-items: center;
  margin: 0 0 14px;
  padding: 0 10px;
  border: 1px solid rgba(13, 17, 16, 0.065);
  border-radius: var(--radius-pill);
  background: rgba(13, 17, 16, 0.035);
  color: var(--text-strong);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.card-index {
  color: var(--text-faint);
}

.project-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.project-meta-row span,
.keyword-list span {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 0 11px;
  border: 1px solid rgba(13, 17, 16, 0.065);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  background: rgba(255, 255, 252, 0.58);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card-body h3 {
  color: var(--text-strong);
  font-size: clamp(26px, 3vw, 34px);
}

.card-body p,
.project-summary-long,
.feature-list li,
.skill-card p,
.insight-card p,
.about-card p,
.contact-card p {
  color: var(--text-muted);
}

.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.feature-dot,
.status-dot {
  background: var(--surface-ink);
}

.visual-panel {
  background:
    linear-gradient(135deg, rgba(13, 17, 16, 0.05), transparent 44%),
    #f0f0eb;
  border: 1px solid rgba(13, 17, 16, 0.06);
}

.visual-panel img {
  filter: saturate(0.82) contrast(1.02);
}

.skills-focus-board {
  display: grid;
  grid-template-columns: minmax(0, 1.34fr) minmax(280px, 0.86fr);
  gap: clamp(18px, 3vw, 34px);
  align-items: stretch;
}

.skills-focus-stack {
  display: grid;
  gap: clamp(16px, 2.2vw, 22px);
}

.skill-card,
.insight-card {
  --skill-tilt-x: 0deg;
  --skill-tilt-y: 0deg;
  --skill-glow-x: 50%;
  --skill-glow-y: 50%;
  min-height: 280px;
  padding: 30px;
  border-radius: var(--radius-card);
}

.skill-card {
  transform:
    perspective(900px)
    rotateX(var(--skill-tilt-x))
    rotateY(var(--skill-tilt-y));
  transform-style: preserve-3d;
  overflow: hidden;
  transition:
    transform 0.56s cubic-bezier(0.2, 0.8, 0.2, 1),
    box-shadow 0.36s ease,
    border-color 0.36s ease;
}

.skill-card--featured {
  min-height: clamp(460px, 52vw, 620px);
  padding: clamp(34px, 5vw, 58px);
  border-color: rgba(13, 17, 16, 0.12);
  background:
    radial-gradient(circle at 82% 18%, rgba(13, 17, 16, 0.1), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 252, 0.98), rgba(255, 255, 252, 0.82)),
    var(--surface-card);
}

.skill-card--support {
  min-height: clamp(220px, 22vw, 292px);
}

.skill-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  border-radius: inherit;
  opacity: 0;
  background:
    radial-gradient(circle at var(--skill-glow-x) var(--skill-glow-y), rgba(255, 255, 255, 0.78), transparent 25%),
    linear-gradient(115deg, transparent, rgba(13, 17, 16, 0.035), transparent);
  transition: opacity 0.34s ease;
}

.skill-card > * {
  position: relative;
  z-index: 1;
}

.skill-card[data-skill-ready].is-skill-tilting {
  border-color: rgba(13, 17, 16, 0.12);
  box-shadow: 0 28px 70px rgba(13, 17, 16, 0.12);
  transition-duration: 0.08s;
}

.skill-card.is-skill-active {
  box-shadow: 0 18px 54px rgba(13, 17, 16, 0.075);
}

.skill-card--featured.is-skill-active {
  box-shadow: 0 34px 120px rgba(13, 17, 16, 0.13);
}

.skill-card:hover {
  transform:
    perspective(900px)
    rotateX(var(--skill-tilt-x))
    rotateY(var(--skill-tilt-y))
    translateY(-5px);
}

.skill-card[data-skill-ready].is-skill-tilting::after {
  opacity: 1;
}

.skill-card [data-skill-layer] {
  transition: transform 0.54s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: transform;
}

.skill-card.is-skill-tilting [data-skill-layer] {
  transition-duration: 0.08s;
}

.skill-card.is-reveal {
  transition-delay: var(--reveal-delay, 0ms);
}

#skills .section-heading {
  position: relative;
}

#skills .section-heading::after {
  content: "";
  display: block;
  width: min(220px, 48vw);
  height: 2px;
  margin: 26px auto 0;
  border-radius: 999px;
  background:
    linear-gradient(90deg, transparent, rgba(13, 17, 16, 0.82), transparent),
    linear-gradient(90deg, rgba(13, 17, 16, 0.12), rgba(13, 17, 16, 0.22));
  background-size: 180% 100%, 100% 100%;
  animation: skillHeadingFlow 3.8s ease-in-out infinite;
}

#skills.is-skills-active .section-heading::after {
  width: min(320px, 62vw);
  background-size: 220% 100%, 100% 100%;
}

.skill-card__ambient {
  position: absolute;
  right: 22px;
  top: 22px;
  width: 86px;
  height: 86px;
  border: 1px solid rgba(13, 17, 16, 0.065);
  border-radius: 50%;
  opacity: 0.45;
  transform: scale(0.86);
  background:
    repeating-radial-gradient(circle, rgba(13, 17, 16, 0.11) 0 1px, transparent 1px 9px);
  transition:
    opacity 0.72s ease,
    transform 0.72s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.skill-card.is-skill-active .skill-card__ambient {
  opacity: 0.78;
  transform: scale(1);
  animation: skillAmbientPulse 4.8s ease-in-out infinite;
}

.skill-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.skill-card--featured .skill-card__head {
  margin-bottom: clamp(38px, 5vw, 72px);
}

.skill-card--support .skill-card__head {
  margin-bottom: 18px;
}

.insight-card span,
.skill-label {
  background: rgba(13, 17, 16, 0.045);
  color: var(--text-strong);
  border: 1px solid rgba(13, 17, 16, 0.055);
}

.skill-metric {
  display: grid;
  min-width: 82px;
  justify-items: end;
  gap: 2px;
  color: var(--text-strong);
  opacity: 0.38;
  transform: translateY(10px);
  transition:
    opacity 0.58s ease,
    transform 0.58s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.skill-card.is-skill-active .skill-metric {
  opacity: 1;
  transform: translateY(0);
}

.skill-metric strong {
  font-size: clamp(34px, 4.8vw, 54px);
  line-height: 0.9;
  letter-spacing: -0.08em;
}

.skill-card--featured .skill-metric strong {
  font-size: clamp(52px, 7vw, 86px);
}

.skill-card--support .skill-metric strong {
  font-size: clamp(28px, 3vw, 40px);
}

.skill-metric small {
  color: var(--text-faint);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.skill-card__progress {
  height: 3px;
  margin: -10px 0 28px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(13, 17, 16, 0.055);
}

.skill-card__progress span {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background:
    linear-gradient(90deg, rgba(13, 17, 16, 0.15), rgba(13, 17, 16, 0.9), rgba(13, 17, 16, 0.22));
  transform: scaleX(0.06);
  transform-origin: left center;
  transition: transform 1.05s cubic-bezier(0.2, 0.8, 0.2, 1);
  transition-delay: calc(var(--skill-index, 0) * 110ms + 120ms);
}

.skill-card.is-skill-active .skill-card__progress span {
  transform: scaleX(1);
}

.skill-card h3,
.insight-card h3 {
  color: var(--text-strong);
  font-size: clamp(24px, 2.6vw, 32px);
}

.skill-card--featured h3 {
  max-width: 760px;
  font-size: clamp(38px, 5.6vw, 72px);
  line-height: 0.94;
  letter-spacing: -0.075em;
}

.skill-card--featured p {
  max-width: 680px;
  margin-top: 22px;
  font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.86;
}

.skill-card--support h3 {
  font-size: clamp(22px, 2.2vw, 28px);
}

.skill-card--support p {
  line-height: 1.72;
}

.skill-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.skill-card--featured .skill-highlights {
  margin-top: clamp(30px, 4vw, 50px);
}

.skill-card--support .skill-highlights {
  margin-top: 18px;
}

.skill-highlight {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 0 12px;
  border: 1px solid rgba(13, 17, 16, 0.07);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 252, 0.72);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.58s ease,
    transform 0.58s cubic-bezier(0.2, 0.8, 0.2, 1),
    color 0.28s ease,
    border-color 0.28s ease;
  transition-delay: calc(var(--highlight-index, 0) * 90ms + 180ms);
}

.skill-card.is-skill-active .skill-highlight {
  opacity: 1;
  transform: translateY(0);
}

.skill-card:hover .skill-highlight,
.skill-card.is-skill-tilting .skill-highlight {
  color: var(--text-strong);
  border-color: rgba(13, 17, 16, 0.13);
}

.skill-card--orbit .skill-card__ambient {
  border-radius: 42% 58% 48% 52%;
}

.skill-card--grid .skill-card__ambient {
  border-radius: 22px;
  background:
    linear-gradient(rgba(13, 17, 16, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 17, 16, 0.08) 1px, transparent 1px);
  background-size: 16px 16px;
}

.skill-card--signal .skill-card__ambient {
  background:
    radial-gradient(circle at 50% 50%, rgba(13, 17, 16, 0.14) 0 2px, transparent 3px),
    repeating-radial-gradient(circle, transparent 0 9px, rgba(13, 17, 16, 0.1) 10px 11px);
}

.contact-card {
  min-height: 300px;
}

.contact-card h2 {
  margin: 10px 0 14px;
  color: var(--text-strong);
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.04;
  letter-spacing: var(--track-tight);
}

.about-card h2 {
  margin-top: 0;
}

.collab-message-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1fr);
  gap: clamp(22px, 4vw, 48px);
  align-items: stretch;
  margin-top: clamp(28px, 5vw, 64px);
  padding: clamp(22px, 4vw, 44px);
  border: var(--border-card);
  border-radius: var(--radius-card);
  background:
    radial-gradient(circle at 12% 18%, rgba(13, 17, 16, 0.08), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 252, 0.96), rgba(255, 255, 252, 0.82));
  box-shadow: var(--shadow-soft);
}

.collab-message-copy h3 {
  max-width: 520px;
  margin: 12px 0 16px;
  color: var(--text-strong);
  font-size: clamp(30px, 4vw, 52px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.collab-message-copy p:not(.section-kicker) {
  max-width: 520px;
  color: var(--text-muted);
}

.collab-form {
  display: grid;
  gap: 16px;
}

.collab-form label {
  display: grid;
  gap: 8px;
  color: var(--text-strong);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.collab-honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.collab-form input,
.collab-form textarea {
  width: 100%;
  border: 1px solid rgba(13, 17, 16, 0.09);
  border-radius: 24px;
  background: rgba(255, 255, 252, 0.78);
  color: var(--text-strong);
  font: inherit;
  font-size: 15px;
  letter-spacing: 0;
  outline: none;
  padding: 15px 18px;
  text-transform: none;
  transition:
    border-color 0.24s ease,
    box-shadow 0.24s ease,
    background 0.24s ease;
}

.collab-form textarea {
  min-height: 132px;
  resize: vertical;
}

.collab-form input:focus,
.collab-form textarea:focus {
  border-color: rgba(13, 17, 16, 0.34);
  background: rgba(255, 255, 252, 0.96);
  box-shadow: 0 0 0 4px rgba(13, 17, 16, 0.055);
}

.collab-form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
}

.collab-feedback {
  flex: 1 1 220px;
  min-height: 24px;
  color: var(--text-muted);
  font-size: 13px;
}

.collab-feedback[data-state="error"] {
  color: #9f403d;
}

.collab-feedback[data-state="success"] {
  color: #006b55;
}

/* Footer */
.site-footer {
  background: rgba(247, 247, 243, 0.78);
  border-top: 1px solid rgba(13, 17, 16, 0.06);
  box-shadow: none;
}

.footer-copy p,
.footer-links a,
.footer-links button,
.status {
  color: var(--text-muted);
}

@media (max-width: 820px) {
  .shell {
    width: min(var(--max-width), calc(100% - 28px));
  }

  .showcase-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .showcase-controls {
    align-self: flex-end;
  }

  .showcase-grid--rail .showcase-card,
  .showcase-grid--rail .showcase-card--small,
  .showcase-grid--rail .showcase-card--large {
    flex-basis: min(84vw, 560px);
    width: min(84vw, 560px);
  }

  .hero {
    min-height: 620px;
    padding-top: 118px;
  }

  .hero-interaction-plane {
    width: 100vw;
    max-width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    overflow: hidden;
    min-height: 360px;
    padding-top: 24px;
    padding-bottom: 18px;
  }

  .hero-title-system {
    max-width: min(92vw, 1240px);
    min-height: clamp(112px, 30vw, 198px);
  }

  .hero-title-stack,
  .hero .hero-title {
    max-width: min(92vw, 1240px);
  }

  .hero .hero-title {
    font-size: clamp(38px, 10.6vw, 76px);
    letter-spacing: -0.092em;
  }

  .hero-title-base {
    flex-wrap: wrap;
    gap: clamp(8px, 2vw, 14px);
  }

  .hero-title-reveal-text {
    font-size: clamp(34px, 10vw, 70px);
  }

  .skills-focus-board {
    grid-template-columns: 1fr;
  }

  .skills-focus-stack {
    grid-template-columns: 1fr;
  }

  .skill-card--featured {
    min-height: auto;
  }

  .showcase-card,
  .skill-card,
  .insight-card,
  .about-card,
  .contact-card,
  .collab-message-panel {
    border-radius: 26px;
  }

  .collab-message-panel {
    grid-template-columns: 1fr;
  }

  .section-heading--center {
    justify-items: start;
    text-align: left;
  }
}

@media (max-width: 560px) {
  .shell {
    width: min(var(--max-width), calc(100% - 20px));
  }

  .showcase-scroller {
    margin-inline: -2px;
    padding-inline: 2px;
    padding-bottom: 14px;
    cursor: auto;
  }

  .showcase-control {
    width: 40px;
    height: 40px;
  }

  .showcase-grid--rail .showcase-card,
  .showcase-grid--rail .showcase-card--small,
  .showcase-grid--rail .showcase-card--large {
    flex-basis: min(88vw, 420px);
    width: min(88vw, 420px);
    min-height: 600px;
  }

  .hero {
    min-height: 560px;
    --hero-orb-x: 76%;
    --hero-orb-y: 20%;
    --hero-title-mask-x: 76%;
    --hero-title-mask-y: 20%;
    --hero-orb-size: clamp(112px, 36vw, 178px);
    --hero-reveal-y: -0.08em;
  }

  .hero .hero-title {
    line-height: 0.88;
  }

  .hero-title-name {
    font-size: 0.9em;
    transform: translateX(0) translateY(0.035em) translateZ(16px);
  }

  .hero-meta-line {
    margin-top: 12px;
    max-width: 280px;
    letter-spacing: 0.09em;
  }

  .button {
    min-height: 50px;
  }

  .section-heading h2 {
    font-size: clamp(34px, 12vw, 50px);
  }

  .skill-card--featured,
  .skill-card--support {
    padding: 24px;
  }

  .skill-card--featured h3 {
    font-size: clamp(34px, 11vw, 52px);
  }

  .skill-card__head {
    align-items: flex-start;
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero {
    --hero-orb-x: 50%;
    --hero-orb-y: 50%;
    --hero-title-mask-x: 50%;
    --hero-title-mask-y: 50%;
    --hero-title-left: 0px;
    --hero-title-top: 0px;
    --hero-title-width: 100%;
    --hero-title-height: 100%;
    --hero-orb-size: 0px;
    --hero-rotate-x: 0deg;
    --hero-rotate-y: 0deg;
  }

  .hero-title-system,
  .hero-meta-line,
  .hero-divider,
  .eyebrow {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .hero-orb,
  .hero-title-reveal {
    display: none;
  }

  .hero-title-base {
    opacity: 1;
    transform: none;
  }

  .button,
  .showcase-card,
  .skill-card,
  .insight-card,
  .about-card,
  .contact-card,
  .action-circle {
    transition: none;
  }

  .button:hover,
  .showcase-card:hover,
  .skill-card:hover,
  .insight-card:hover,
  .action-circle:hover {
    transform: none;
  }

  .showcase-card::after {
    display: none;
  }

  #skills .section-heading::after,
  .skill-card__ambient {
    animation: none;
  }

  .skill-card,
  .skill-card:hover,
  .skill-card [data-skill-layer] {
    transform: none !important;
    transition: none;
  }

  .skill-highlight {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .skill-metric,
  .skill-card__progress span {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .collab-form input,
  .collab-form textarea {
    transition: none;
  }

  .showcase-card[data-tilt-ready],
  .showcase-card[data-tilt-ready]:hover,
  .showcase-card [data-tilt-layer] {
    transform: none !important;
    transition: none;
  }

  .is-reveal,
  .is-reveal:not(.is-visible),
  .showcase-card.is-reveal:not(.is-visible),
  .skill-card.is-reveal:not(.is-visible),
  .insight-card.is-reveal:not(.is-visible) {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@keyframes heroTitleReveal {
  from {
    opacity: 0;
    transform: translateY(22px) scale(0.985);
    filter: blur(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

@keyframes skillHeadingFlow {
  0%,
  100% {
    background-position: 0% 0, 0 0;
    opacity: 0.62;
  }
  50% {
    background-position: 100% 0, 0 0;
    opacity: 1;
  }
}

@keyframes skillAmbientPulse {
  0%,
  100% {
    transform: scale(1) rotate(0deg);
  }
  50% {
    transform: scale(1.06) rotate(8deg);
  }
}

@keyframes heroOrbEnter {
  from {
    opacity: 0.98;
    transform: translate(-50%, -50%) scale(0.74);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@keyframes heroContentReveal {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroSheen {
  to {
    transform: translateX(120%);
  }
}