/* ===========================================
   THE WORKFLOW ENGINE — Gia Bao portfolio
   Visual language: nodes · transitions · signal
   =========================================== */

:root {
  --bg: #0a0e14;
  --bg-card: #11161f;
  --bg-elev: #161d28;
  --bg-hover: #1a2230;
  --border: #222b39;
  --wire: #2c3a4d;
  --text: #e7ebf2;
  --text-2: #8a95a8;
  --text-3: #5d6a7e;
  --signal: #43e08b; /* done / running */
  --signal-soft: rgba(67, 224, 139, 0.12);
  --signal-line: rgba(67, 224, 139, 0.5);
  --amber: #f5b14c; /* in progress */
  --amber-soft: rgba(245, 177, 76, 0.12);

  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --sans: "Inter", system-ui, -apple-system, sans-serif;
  --max: 1120px;
  --radius: 10px;
}

:root[data-theme="light"] {
  --bg: #f6f7f9;
  --bg-card: #ffffff;
  --bg-elev: #f1f3f6;
  --bg-hover: #eef1f5;
  --border: #e2e6ec;
  --wire: #c8d0db;
  --text: #0e1622;
  --text-2: #586375;
  --text-3: #8a94a4;
  --signal: #12a05a;
  --signal-soft: rgba(18, 160, 90, 0.1);
  --signal-line: rgba(18, 160, 90, 0.45);
  --amber: #c2790c;
  --amber-soft: rgba(194, 121, 12, 0.1);
}

/* ===== Reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* subtle grid backdrop — the "engine board" */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.25;
  mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(
    circle at 50% 0%,
    #000 0%,
    transparent 70%
  );
}

a {
  color: inherit;
  text-decoration: none;
}
img {
  display: block;
  max-width: 100%;
}
button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}
ul {
  list-style: none;
}
strong {
  color: var(--text);
  font-weight: 700;
}

/* ===== Skip link ===== */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 8px 14px;
  border-radius: 6px;
  background: var(--signal);
  color: #04130a;
  font-weight: 700;
  transform: translateY(-200%);
  transition: transform 0.15s;
}
.skip-link:focus {
  transform: translateY(0);
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.logo-mark {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px var(--signal-soft);
}
.logo-cursor {
  color: var(--signal);
  animation: blink 1.2s steps(1) infinite;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}

.nav-links {
  display: flex;
  gap: 30px;
}
.nav-links a {
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.15s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sys-status {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--signal);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  border-radius: 6px;
  border: 1px solid color-mix(in srgb, var(--signal) 24%, transparent);
  background: var(--signal-soft);
}
.sys-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  animation: pulse-dot 1.8s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.theme-btn {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text-2);
  transition:
    color 0.15s,
    border-color 0.15s;
}
.theme-btn:hover {
  color: var(--text);
  border-color: var(--text-2);
}
.icon-moon {
  display: none;
}
:root:not([data-theme="light"]) .icon-sun {
  display: none;
}
:root:not([data-theme="light"]) .icon-moon {
  display: block;
}

.btn-resume {
  height: 36px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
  background: var(--text);
  color: var(--bg);
  font-size: 13px;
  font-weight: 600;
  transition: opacity 0.15s;
}
.btn-resume:hover {
  opacity: 0.85;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.hamburger span {
  display: block;
  width: 16px;
  height: 1.5px;
  margin: 0 auto;
  background: var(--text);
  transition: all 0.25s;
}
.hamburger.open span:first-child {
  transform: translateY(3.25px) rotate(45deg);
}
.hamburger.open span:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: 64px 0 0;
  z-index: 29;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--bg);
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s;
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}
.mobile-menu a {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-2);
  padding: 8px 20px;
  border-radius: 8px;
  transition: color 0.15s;
}
.mobile-menu a:hover {
  color: var(--text);
}
.mobile-resume {
  margin-top: 12px;
  padding: 12px 28px !important;
  background: var(--signal);
  color: #04130a !important;
  border-radius: 8px;
  font-size: 15px !important;
  font-weight: 700;
}

/* ===== Hero ===== */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 96px 24px 64px;
}
.hero-tag {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--signal);
  margin-bottom: 22px;
  letter-spacing: 0.04em;
}
.hero h1 {
  font-size: clamp(32px, 5.2vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 800;
  max-width: 760px;
  margin-bottom: 24px;
}
.hero h1 .hl {
  color: var(--signal);
  text-shadow: 0 0 28px var(--signal-soft);
}
.hero-sub {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-2);
  max-width: 600px;
  margin-bottom: 36px;
}

/* Hero signature pipeline */
.hero-machine {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 36px;
  max-width: 480px;
}
.hm-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.hm-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--wire);
  background: var(--bg-card);
  transition: all 0.3s;
}
.hm-lbl {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-3);
  white-space: nowrap;
}
.hm-wire {
  flex: 1;
  height: 2px;
  margin: 0 4px;
  background: linear-gradient(90deg, var(--wire) 0 50%, transparent 50%);
  background-size: 10px 2px;
  position: relative;
  top: -10px;
}
/* signal travels through the pipeline */
.hm-1 .hm-dot {
  animation: hm-fire 3.6s ease-in-out infinite;
  animation-delay: 0s;
}
.hm-2 .hm-dot {
  animation: hm-fire 3.6s ease-in-out infinite;
  animation-delay: 1.2s;
}
.hm-3 .hm-dot {
  animation: hm-fire 3.6s ease-in-out infinite;
  animation-delay: 2.4s;
}
.hm-1 .hm-lbl {
  animation: hm-lit 3.6s ease-in-out infinite 0s;
}
.hm-2 .hm-lbl {
  animation: hm-lit 3.6s ease-in-out infinite 1.2s;
}
.hm-3 .hm-lbl {
  animation: hm-lit 3.6s ease-in-out infinite 2.4s;
}
@keyframes hm-fire {
  0%,
  22%,
  100% {
    background: var(--bg-card);
    border-color: var(--wire);
    box-shadow: none;
  }
  8%,
  16% {
    background: var(--signal);
    border-color: var(--signal);
    box-shadow: 0 0 0 5px var(--signal-soft);
  }
}
@keyframes hm-lit {
  0%,
  22%,
  100% {
    color: var(--text-3);
  }
  8%,
  16% {
    color: var(--signal);
  }
}

/* Hero two-column grid (copy + live engine) */
.hero-grid {
  display: block;
}

/* Live "running system" canvas */
.hero-engine {
  position: relative;
  aspect-ratio: 3 / 4;
  min-height: 420px;
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  background: radial-gradient(
    circle at 50% 28%,
    var(--bg-elev),
    var(--bg-card) 74%
  );
}
.hero-engine::before {
  /* ambient signal glow */
  content: "";
  position: absolute;
  left: 50%;
  top: 42%;
  width: 78%;
  aspect-ratio: 1 / 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, var(--signal-soft), transparent 66%);
  filter: blur(10px);
  pointer-events: none;
}
.hero-engine::after {
  /* faint circuit grid */
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 30px 30px;
  opacity: 0.18;
  mask-image: radial-gradient(circle at 50% 50%, #000, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000, transparent 72%);
}
.hero-engine canvas {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  display: block;
}
.engine-tag {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  pointer-events: none;
}
.engine-tag .sys-dot {
  width: 6px;
  height: 6px;
}

.hero-links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-2);
  font-family: var(--mono);
}
.hero-links a {
  transition: color 0.15s;
}
.hero-links a:hover {
  color: var(--signal);
}
.dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-2);
  opacity: 0.5;
}

/* ===== Numbers / runtime metrics ===== */
.numbers {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 72px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.number-item {
  padding: 30px 24px;
  background: var(--bg-card);
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}
.number-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 0;
  background: var(--signal);
  transition: height 0.5s ease;
}
.number-item.visible::before {
  height: 100%;
}
.number {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.number-label {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.4;
}

/* ===== Sections ===== */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 80px 24px;
}
.section > h2 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section > h2::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--signal);
  box-shadow: 0 0 0 4px var(--signal-soft);
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.section-header h2 {
  margin-bottom: 8px;
}
.section-note {
  font-size: 14px;
  color: var(--text-2);
  max-width: 460px;
}
.section-note .hint {
  color: var(--signal);
  font-weight: 600;
  font-family: var(--mono);
  font-size: 13px;
}

/* Filters */
.filters {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.filter {
  height: 32px;
  padding: 0 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 500;
  font-family: var(--mono);
  color: var(--text-2);
  background: transparent;
  transition: all 0.15s;
}
.filter:hover {
  color: var(--text);
  border-color: var(--text-2);
}
.filter.active {
  background: var(--signal);
  color: #04130a;
  border-color: var(--signal);
}

/* ===========================================
   PROJECT = WORKFLOW CARD
   =========================================== */
.project-grid {
  display: grid;
  gap: 20px;
}

.project {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  overflow: hidden;
  transition:
    border-color 0.2s,
    box-shadow 0.2s,
    transform 0.2s;
}
.project:hover {
  border-color: color-mix(in srgb, var(--signal) 35%, var(--border));
  box-shadow: 0 10px 50px rgba(0, 0, 0, 0.22);
}
.project[hidden] {
  display: none;
}

.project-top {
  padding: 24px 28px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}
.project-head {
  flex: 1;
  min-width: 0;
}
.project-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.project-meta time {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-2);
}

.badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 10px;
  border-radius: 5px;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--signal-soft);
  color: var(--signal);
  border: 1px solid color-mix(in srgb, var(--signal) 22%, transparent);
}
.badge-green {
  background: rgba(67, 224, 139, 0.13);
  color: var(--signal);
  border-color: color-mix(in srgb, var(--signal) 30%, transparent);
}
.badge-amber {
  background: var(--amber-soft);
  color: var(--amber);
  border-color: color-mix(in srgb, var(--amber) 30%, transparent);
}
.badge-blue {
  background: rgba(96, 165, 250, 0.13);
  color: #6ea8fe;
  border-color: rgba(96, 165, 250, 0.3);
}
:root[data-theme="light"] .badge-blue {
  color: #2563eb;
}

.project-head h3 {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.project-tagline {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.6;
  max-width: 720px;
}

.live-pill {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--signal);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 6px;
  border: 1px solid color-mix(in srgb, var(--signal) 24%, transparent);
  background: var(--signal-soft);
  white-space: nowrap;
}
.live-pill .sys-dot {
  width: 6px;
  height: 6px;
}

/* Flow / state machine */
.flow-wrap {
  padding: 26px 28px 8px;
}
.flow {
  display: flex;
  align-items: flex-start;
  gap: 0;
  overflow-x: auto;
  padding-bottom: 14px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--wire) transparent;
}
.flow::-webkit-scrollbar {
  height: 6px;
}
.flow::-webkit-scrollbar-thumb {
  background: var(--wire);
  border-radius: 3px;
}

.node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  width: 96px;
  scroll-snap-align: center;
  background: none;
  text-align: center;
  padding-top: 2px;
}
.node-dot {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  position: relative;
  border: 2px solid var(--signal);
  color: var(--signal);
  background: var(--signal-soft);
  transition: all 0.2s;
  flex-shrink: 0;
}
.node-dot svg {
  width: 17px;
  height: 17px;
}
.node-num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--signal);
}
.node-label {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text-2);
  line-height: 1.3;
  transition: color 0.2s;
}
.node:hover .node-dot {
  transform: scale(1.08);
}
.node:hover .node-label {
  color: var(--text);
}
.node.has-note .node-dot::after {
  content: "";
  position: absolute;
  top: -2px;
  right: -2px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--amber);
  border: 2px solid var(--bg-card);
}
.node.active .node-dot {
  background: var(--signal);
  color: #04130a;
  box-shadow: 0 0 0 5px var(--signal-soft);
}
.node.active .node-num {
  color: #04130a;
}
.node.active .node-label {
  color: var(--text);
}

.wire {
  flex: 1;
  min-width: 22px;
  height: 2px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--signal-line) 0 55%, transparent 55%);
  background-size: 9px 2px;
  position: relative;
  flex-shrink: 0;
}
.wire::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -3px;
  border-left: 6px solid var(--signal-line);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
}

/* Flow detail panel */
.flow-detail {
  margin: 4px 28px 0;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--signal);
  border-radius: 8px;
  background: var(--bg-elev);
  transition: border-color 0.2s;
}
.flow-detail.is-note {
  border-left-color: var(--amber);
}
.fd-stage {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 7px;
}
.flow-detail.is-note .fd-stage {
  color: var(--amber);
}
.fd-desc {
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
}
.fd-block {
  margin-top: 12px;
}
.fd-tag {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-3);
  display: block;
  margin-bottom: 4px;
}
.fd-block.challenge .fd-tag {
  color: var(--amber);
}
.fd-block.fix .fd-tag {
  color: var(--signal);
}
.fd-block p {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.6;
}
.fd-block.fix p {
  color: var(--text);
}

/* Project footer: stack + actions */
.project-foot {
  padding: 20px 28px 26px;
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.project-stack {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.project-stack span {
  height: 26px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-2);
}
.project-actions {
  display: flex;
  gap: 14px;
}
.project-actions a {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--signal);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: opacity 0.15s;
}
.project-actions a:hover {
  opacity: 0.7;
}
.project-actions a.ghost {
  color: var(--text-2);
}

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.skill-card {
  padding: 26px;
  background: var(--bg-card);
  transition: background 0.15s;
}
.skill-card:hover {
  background: var(--bg-hover);
}
.skill-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.sk-tick {
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-soft);
}
.skill-card p {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.65;
}

/* ===== Timeline ===== */
.timeline {
  display: grid;
  gap: 0;
}
.tl-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 32px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.tl-item:first-child {
  padding-top: 0;
}
.tl-item:last-child {
  border-bottom: none;
}
.tl-date {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-2);
  padding-top: 3px;
}
.tl-content h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}
.tl-type {
  font-weight: 500;
  color: var(--signal);
  font-family: var(--mono);
  font-size: 13px;
}
.tl-org {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 8px;
}
.tl-content > p:last-child {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.65;
}

/* ===== Education ===== */
.edu-card {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  margin-bottom: 12px;
}
.edu-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}
.edu-card p {
  font-size: 14px;
  color: var(--text-2);
}
.edu-card time {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-2);
  white-space: nowrap;
}
.edu-courses {
  font-size: 14px;
  color: var(--text-2);
  padding-left: 4px;
}

/* ===== Contact ===== */
.contact-intro {
  font-size: 17px;
  color: var(--text-2);
  line-height: 1.7;
  max-width: 540px;
  margin-bottom: 32px;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
}
.contact-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px;
  background: var(--bg-card);
  transition: background 0.15s;
}
.contact-link:hover {
  background: var(--bg-hover);
}
.contact-label {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-2);
}
.contact-link > span:last-child {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}
.copy-btn {
  height: 40px;
  padding: 0 20px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--mono);
  color: var(--text);
  background: var(--bg-card);
  transition: all 0.15s;
}
.copy-btn:hover {
  border-color: var(--signal);
  background: var(--signal-soft);
}

/* ===== Scroll to top ===== */
.to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-card) 90%, transparent);
  backdrop-filter: blur(8px);
  color: var(--text);
  font-size: 16px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.2s;
}
.to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.to-top:hover {
  border-color: var(--signal);
  color: var(--signal);
}

/* ===== Footer ===== */
.footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 24px;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-2);
  flex-wrap: wrap;
}
.foot-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.foot-status .sys-dot {
  width: 6px;
  height: 6px;
}

/* ===== Scroll reveal ===== */
.reveal {
  --reveal-y: 20px;
  opacity: 0;
  transform: translate3d(0, var(--reveal-y), 0);
  transition:
    opacity 0.5s ease,
    transform 0.5s ease;
}
.reveal.visible {
  --reveal-y: 0px;
  opacity: 1;
  transform: translate3d(0, var(--reveal-y), 0);
}

.scroll-depth {
  --reveal-y: 0px;
  --depth-y: 0px;
  --depth-z: 0px;
  --depth-rx: 0deg;
  --depth-ry: 0deg;
  --depth-base-rx: 0deg;
  --depth-base-ry: 0deg;
  --depth-scale: 1;
  --hover-y: 0px;
  transform: perspective(1100px)
    translate3d(
      0,
      calc(var(--reveal-y) + var(--depth-y) + var(--hover-y)),
      var(--depth-z)
    )
    rotateX(var(--depth-base-rx)) rotateY(var(--depth-base-ry))
    rotateX(var(--depth-rx)) rotateY(var(--depth-ry))
    scale(var(--depth-scale));
  transform-style: preserve-3d;
}
.scroll-depth.is-depth-active {
  will-change: transform;
}

/* ===========================================
   WOW LAYER — boot intro · aurora · scroll bar ·
   hero entrance · card spotlight · headline shimmer
   =========================================== */

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  z-index: 60;
  background: var(--signal);
  box-shadow: 0 0 10px var(--signal-line);
  transform: scaleX(0);
  transform-origin: left center;
}

/* Ambient aurora — static gradients (no blur filter, no animation = cheap) */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(42vw 42vw at 10% 6%, var(--signal-soft), transparent 62%),
    radial-gradient(
      38vw 38vw at 90% 20%,
      rgba(110, 168, 254, 0.1),
      transparent 62%
    ),
    radial-gradient(36vw 36vw at 42% 102%, var(--signal-soft), transparent 60%);
}
.aurora span {
  display: none;
}
.depth-lights,
.grain {
  display: none;
}

/* Boot intro overlay (shown only when JS is on) */
.boot {
  display: none;
}
.js .boot {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  transition:
    opacity 0.5s ease,
    visibility 0.5s ease;
}
.boot.done {
  opacity: 0;
  visibility: hidden;
}
.boot-log {
  font-family: var(--mono);
  font-size: clamp(11px, 2.6vw, 14px);
  line-height: 1.7;
  color: var(--text-2);
  white-space: pre-wrap;
  padding: 24px;
  max-width: 460px;
}
.boot-log .ok {
  color: var(--signal);
}
.boot-log .cmd {
  color: var(--text);
  font-weight: 700;
}
.boot-cursor {
  color: var(--signal);
  animation: blink 1s steps(1) infinite;
}

/* Hero entrance (staggered) */
.js .hero-copy > *,
.js .hero-engine {
  opacity: 0;
  transform: translateY(16px);
}
.ready .hero-copy > * {
  animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
}
.ready .hero-copy > *:nth-child(1) {
  animation-delay: 0.05s;
}
.ready .hero-copy > *:nth-child(2) {
  animation-delay: 0.14s;
}
.ready .hero-copy > *:nth-child(3) {
  animation-delay: 0.23s;
}
.ready .hero-copy > *:nth-child(4) {
  animation-delay: 0.32s;
}
.ready .hero-copy > *:nth-child(5) {
  animation-delay: 0.41s;
}
.ready .hero-engine {
  animation: rise 0.8s cubic-bezier(0.2, 0.7, 0.2, 1) 0.3s forwards;
}
@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Headline shimmer on the highlighted phrase */
.hero h1 .hl {
  background: linear-gradient(
    100deg,
    var(--signal) 0%,
    color-mix(in srgb, var(--signal) 45%, #ffffff) 45%,
    var(--signal) 70%
  );
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: none;
}
@keyframes shimmer {
  to {
    background-position: -220% 0;
  }
}

/* Project card cursor spotlight */
.project {
  position: relative;
}
.project .spotlight {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  border-radius: var(--radius);
  opacity: 0;
  transition: opacity 0.3s ease;
  background: radial-gradient(
    220px circle at var(--mx, 50%) var(--my, 0%),
    var(--signal-soft),
    transparent 60%
  );
}
.project:hover .spotlight {
  opacity: 1;
}
.project > *:not(.spotlight) {
  position: relative;
  z-index: 1;
}

/* Hero role rotator */
.rotator {
  display: inline-block;
  transition:
    opacity 0.28s ease,
    transform 0.28s ease;
}

/* Film grain overlay */
.grain {
  position: fixed;
  inset: 0;
  z-index: 70;
  pointer-events: none;
  opacity: 0.03;
  background-image: 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='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
:root[data-theme="light"] .grain {
  opacity: 0.025;
}

/* Custom cursor (desktop, when JS enables it) */
.cursor-dot,
.cursor-ring {
  display: none;
}
body.cursor-on .cursor-dot,
body.cursor-on .cursor-ring {
  display: block;
}
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 95;
  pointer-events: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  margin: -3.5px 0 0 -3.5px;
  will-change: transform;
}
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 95;
  pointer-events: none;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid color-mix(in srgb, var(--signal) 55%, transparent);
  margin: -17px 0 0 -17px;
  will-change: transform;
  transition:
    width 0.18s ease,
    height 0.18s ease,
    margin 0.18s ease,
    background 0.18s ease,
    border-color 0.18s ease;
}
.cursor-ring.hot {
  width: 54px;
  height: 54px;
  margin: -27px 0 0 -27px;
  background: var(--signal-soft);
  border-color: var(--signal);
}
.cursor-ring.down {
  width: 26px;
  height: 26px;
  margin: -13px 0 0 -13px;
}
body.cursor-on,
body.cursor-on a,
body.cursor-on button,
body.cursor-on .node,
body.cursor-on .filter,
body.cursor-on .project {
  cursor: none;
}

/* Tech marquee */
.marquee {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  padding: 16px 0;
  margin: 8px 0 0;
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent,
    #000 8%,
    #000 92%,
    transparent
  );
  mask-image: linear-gradient(
    90deg,
    transparent,
    #000 8%,
    #000 92%,
    transparent
  );
}
.marquee-track {
  display: inline-flex;
  align-items: center;
  gap: 26px;
  width: max-content;
  white-space: nowrap;
  animation: marquee 28s linear infinite;
  will-change: transform;
}
.marquee:hover .marquee-track {
  animation-play-state: running;
}
.marquee-track span {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
}
.marquee-track b {
  color: var(--signal);
  font-weight: 700;
}
@keyframes marquee {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-50%, 0, 0);
  }
}

/* Bento capability grid */
.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}
.bento .skill-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  position: relative;
  transition:
    border-color 0.2s,
    transform 0.2s,
    background 0.15s;
}
.bento .skill-card:hover {
  border-color: color-mix(in srgb, var(--signal) 35%, var(--border));
  transform: translateY(-3px);
}
.bento-2 {
  grid-column: span 2;
}
.bento-3 {
  grid-column: span 3;
}
.bento-6 {
  grid-column: span 6;
}
.skill-card.feat {
  background: linear-gradient(140deg, var(--signal-soft), var(--bg-card) 58%);
  border-color: color-mix(in srgb, var(--signal) 32%, var(--border));
}
.skill-card.feat h3 {
  font-size: 17px;
}
.bento-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--signal);
  padding: 3px 8px;
  border-radius: 5px;
  background: var(--signal-soft);
  border: 1px solid color-mix(in srgb, var(--signal) 26%, transparent);
}

/* Magnetic buttons */
.magnetic {
  transition: transform 0.18s cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .nav-links {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .sys-status {
    display: none;
  }
  .hero {
    padding: 72px 24px 56px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-engine {
    min-height: 340px;
    max-width: 440px;
    width: 100%;
    margin: 4px auto 0;
  }
  .numbers {
    grid-template-columns: repeat(2, 1fr);
  }
  .bento {
    grid-template-columns: repeat(2, 1fr);
  }
  .bento-3,
  .bento-6,
  .skill-card.feat {
    grid-column: span 2;
  }
  .bento-2 {
    grid-column: span 1;
  }
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tl-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .tl-date {
    padding-top: 0;
  }
  .edu-card {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 580px) {
  .nav {
    padding: 0 16px;
  }
  .btn-resume {
    display: none;
  }
  .hero {
    padding: 52px 16px 44px;
  }
  .section {
    padding: 56px 16px;
  }
  .numbers {
    padding: 0 16px 56px;
    grid-template-columns: 1fr 1fr;
  }
  .footer {
    padding: 24px 16px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-machine {
    max-width: 100%;
  }
  .hero-engine {
    min-height: 300px;
  }
  .skills-grid {
    grid-template-columns: 1fr;
  }
  .bento {
    grid-template-columns: 1fr;
  }
  .bento-2,
  .bento-3,
  .bento-6,
  .skill-card.feat {
    grid-column: span 1;
  }
  .marquee-track span {
    font-size: 13px;
  }
  .section > h2 {
    font-size: 23px;
  }
  .project-top {
    padding: 20px 18px 0;
    flex-direction: column;
    gap: 12px;
  }
  .flow-wrap {
    padding: 22px 18px 6px;
  }
  .flow-detail {
    margin: 4px 18px 0;
  }
  .project-foot {
    padding: 18px 18px 22px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* =============================================================
   CINEMATIC 3D UPGRADE — premium holographic portfolio layer
   Added on top of the original Workflow Engine visual system.
   ============================================================= */
:root {
  --cyan: #5ee7ff;
  --cyan-soft: rgba(94, 231, 255, 0.12);
  --violet: #9b7bff;
  --violet-soft: rgba(155, 123, 255, 0.14);
  --gold: #ffd166;
  --rose: #ff5ea8;
  --glass: rgba(255, 255, 255, 0.055);
  --glass-strong: rgba(255, 255, 255, 0.095);
  --shadow-3d: 0 28px 90px rgba(0, 0, 0, 0.38);
  --edge-light: rgba(255, 255, 255, 0.12);
}
:root[data-theme="light"] {
  --glass: rgba(255, 255, 255, 0.72);
  --glass-strong: rgba(255, 255, 255, 0.9);
  --shadow-3d: 0 24px 70px rgba(23, 34, 53, 0.14);
  --edge-light: rgba(14, 22, 34, 0.08);
}

body {
  background:
    radial-gradient(
      1100px 650px at 18% -8%,
      color-mix(in srgb, var(--signal) 20%, transparent),
      transparent 58%
    ),
    radial-gradient(
      920px 620px at 86% 4%,
      color-mix(in srgb, var(--violet) 18%, transparent),
      transparent 60%
    ),
    radial-gradient(
      900px 720px at 64% 102%,
      color-mix(in srgb, var(--cyan) 10%, transparent),
      transparent 62%
    ),
    var(--bg);
}
body::before {
  background-image:
    linear-gradient(
      color-mix(in srgb, var(--border) 86%, transparent) 1px,
      transparent 1px
    ),
    linear-gradient(
      90deg,
      color-mix(in srgb, var(--border) 86%, transparent) 1px,
      transparent 1px
    ),
    linear-gradient(
      135deg,
      transparent 0 47%,
      color-mix(in srgb, var(--signal) 12%, transparent) 48% 52%,
      transparent 53% 100%
    );
  background-size:
    54px 54px,
    54px 54px,
    210px 210px;
  opacity: 0.34;
}

.depth-lights {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}
.depth-light {
  position: absolute;
  width: min(30vw, 420px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  filter: blur(28px);
  opacity: 0.22;
  transform: translateZ(0);
}
.depth-a {
  left: -10vw;
  top: 16vh;
  background: var(--signal);
}
.depth-b {
  right: -12vw;
  top: 22vh;
  background: var(--violet);
}
.depth-c {
  left: 34vw;
  bottom: -18vw;
  background: var(--cyan);
  opacity: 0.2;
}
:root[data-theme="light"] .depth-light {
  opacity: 0.1;
}

.site-header {
  border-bottom-color: color-mix(in srgb, var(--border) 70%, transparent);
  box-shadow:
    0 1px 0 var(--edge-light),
    0 12px 34px rgba(0, 0, 0, 0.12);
}
.nav {
  position: relative;
}
.logo-mark {
  width: 12px;
  height: 12px;
  background: conic-gradient(
    from 180deg,
    var(--signal),
    var(--cyan),
    var(--violet),
    var(--signal)
  );
  box-shadow:
    0 0 0 4px var(--signal-soft),
    0 0 30px color-mix(in srgb, var(--signal) 60%, transparent);
}
.btn-resume,
.primary-cta,
.secondary-cta,
.copy-btn {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.btn-resume::before,
.primary-cta::before,
.secondary-cta::before,
.copy-btn::before {
  content: "";
  position: absolute;
  inset: -1px;
  background: linear-gradient(
    110deg,
    transparent,
    rgba(255, 255, 255, 0.28),
    transparent
  );
  transform: translateX(-120%);
  transition: transform 0.55s ease;
  z-index: -1;
}
.btn-resume:hover::before,
.primary-cta:hover::before,
.secondary-cta:hover::before,
.copy-btn:hover::before {
  transform: translateX(120%);
}

.hero {
  position: relative;
  padding-top: 108px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 46px 24px auto;
  height: 440px;
  z-index: -1;
  border-radius: 34px;
  background:
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--signal) 12%, transparent),
      transparent 44%
    ),
    linear-gradient(
      315deg,
      color-mix(in srgb, var(--violet) 14%, transparent),
      transparent 50%
    );
  border: 1px solid color-mix(in srgb, var(--edge-light) 80%, transparent);
  transform: perspective(1200px) rotateX(58deg) translateY(-72px) scale(0.96);
  filter: blur(0.1px);
  opacity: 0.64;
}
.hero-grid {
  perspective: 1400px;
}
.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 860px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid color-mix(in srgb, var(--signal) 30%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--signal-soft) 78%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 12px 34px rgba(0, 0, 0, 0.12);
}
.hero-tag::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 18px var(--signal);
}
.hero h1 {
  max-width: 820px;
  text-wrap: balance;
  text-shadow: 0 18px 70px rgba(0, 0, 0, 0.32);
}
.hero-sub {
  max-width: 680px;
}
.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: -10px 0 28px;
}
.hero-proof span {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  min-height: 34px;
  padding: 6px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-card) 72%, transparent);
  box-shadow: inset 0 1px 0 var(--edge-light);
  color: var(--text-2);
  font-size: 12.5px;
  font-family: var(--mono);
}
.hero-proof strong {
  color: var(--signal);
  font-size: 14px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: -10px 0 28px;
}
.primary-cta,
.secondary-cta {
  height: 44px;
  padding: 0 18px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 13.5px;
  font-weight: 800;
  letter-spacing: -0.01em;
  transform: translateZ(0);
}
.primary-cta {
  color: #03120a;
  background: linear-gradient(
    135deg,
    var(--signal),
    color-mix(in srgb, var(--cyan) 70%, var(--signal))
  );
  box-shadow:
    0 12px 35px color-mix(in srgb, var(--signal) 24%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.42);
}
.primary-cta::after {
  content: "→";
  font-family: var(--mono);
}
.secondary-cta {
  color: var(--text);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-card) 76%, transparent);
  box-shadow: inset 0 1px 0 var(--edge-light);
}
.secondary-cta:hover {
  border-color: color-mix(in srgb, var(--signal) 44%, var(--border));
}

.hero-machine {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--bg-card) 84%, transparent),
    color-mix(in srgb, var(--bg-elev) 72%, transparent)
  );
  box-shadow:
    inset 0 1px 0 var(--edge-light),
    0 20px 50px rgba(0, 0, 0, 0.14);
}
.hm-wire {
  background-size: 12px 2px;
}

.hero-engine {
  min-height: 500px;
  border-radius: 30px;
  --depth-base-rx: 5deg;
  --depth-base-ry: -9deg;
  transform: perspective(1400px) translateZ(0) rotateX(var(--depth-base-rx))
    rotateY(var(--depth-base-ry));
  transform-style: preserve-3d;
  box-shadow:
    var(--shadow-3d),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
  border-color: color-mix(in srgb, var(--signal) 20%, var(--border));
  background:
    radial-gradient(
      circle at 50% 32%,
      color-mix(in srgb, var(--signal) 16%, transparent),
      transparent 34%
    ),
    radial-gradient(
      circle at 78% 20%,
      color-mix(in srgb, var(--violet) 15%, transparent),
      transparent 32%
    ),
    linear-gradient(
      145deg,
      color-mix(in srgb, var(--bg-elev) 92%, transparent),
      var(--bg-card)
    );
}
.hero-engine::before {
  width: 92%;
  filter: blur(10px);
  background: radial-gradient(
    circle,
    color-mix(in srgb, var(--signal) 22%, transparent),
    transparent 66%
  );
}
.hero-engine::after {
  opacity: 0.23;
  background-size: 28px 28px;
}
.hero-engine canvas {
  opacity: 0.78;
  transform: translateZ(20px);
}
.holo-console {
  position: absolute;
  top: 18px;
  left: 18px;
  right: 18px;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid color-mix(in srgb, var(--edge-light) 100%, transparent);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg-card) 68%, transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow:
    inset 0 1px 0 var(--edge-light),
    0 18px 44px rgba(0, 0, 0, 0.22);
  transform: translateZ(50px);
}
.hc-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
}
.hc-dot.red {
  background: #ff5f57;
}
.hc-dot.amber {
  background: #ffbd2e;
}
.hc-dot.green {
  background: #28c840;
}
.holo-console code {
  margin-left: 4px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-2);
}
.holo-console b {
  color: var(--signal);
}
.orbit-shell {
  position: absolute;
  inset: 18% 13% 20%;
  z-index: 2;
  display: grid;
  place-items: center;
  pointer-events: none;
  transform-style: preserve-3d;
  transform: translateZ(40px);
}
.orbit-ring {
  position: absolute;
  inset: 16%;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--signal) 44%, transparent);
  box-shadow:
    0 0 34px color-mix(in srgb, var(--signal) 12%, transparent),
    inset 0 0 22px color-mix(in srgb, var(--signal) 8%, transparent);
}
.ring-a {
  transform: rotateX(68deg) rotateZ(18deg);
}
.ring-b {
  transform: rotateX(66deg) rotateY(58deg) rotateZ(-18deg);
  border-color: color-mix(in srgb, var(--cyan) 42%, transparent);
}
.ring-c {
  transform: rotateX(18deg) rotateY(72deg);
  border-color: color-mix(in srgb, var(--violet) 42%, transparent);
}
.ready .ring-a {
  animation: orbit-spin-a 42s linear infinite;
}
.ready .ring-b {
  animation: orbit-spin-b 54s linear infinite reverse;
}
.ready .ring-c {
  animation: orbit-spin-c 68s linear infinite;
}
.orbit-core {
  width: 78px;
  height: 78px;
  border-radius: 28px;
  display: grid;
  place-items: center;
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--signal) 72%, var(--cyan)),
    color-mix(in srgb, var(--violet) 40%, var(--signal))
  );
  box-shadow:
    0 0 0 10px color-mix(in srgb, var(--signal) 10%, transparent),
    0 24px 70px color-mix(in srgb, var(--signal) 28%, transparent);
  transform: rotateX(58deg) rotateZ(45deg);
}
.orbit-core span {
  transform: rotateZ(-45deg) rotateX(-58deg);
  font-family: var(--mono);
  font-weight: 900;
  color: #04130a;
}
@keyframes orbit-spin-a {
  to {
    transform: rotateX(68deg) rotateZ(378deg);
  }
}
@keyframes orbit-spin-b {
  to {
    transform: rotateX(66deg) rotateY(58deg) rotateZ(342deg);
  }
}
@keyframes orbit-spin-c {
  to {
    transform: rotateX(18deg) rotateY(72deg) rotateZ(360deg);
  }
}

.floating-chip {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  padding: 7px 10px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 800;
  color: var(--text);
  border: 1px solid color-mix(in srgb, var(--edge-light) 100%, transparent);
  background: color-mix(in srgb, var(--bg-card) 70%, transparent);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow:
    inset 0 1px 0 var(--edge-light),
    0 12px 34px rgba(0, 0, 0, 0.18);
  transform: translateZ(70px);
}
.chip-java {
  top: 22%;
  right: 9%;
  color: var(--gold);
}
.chip-spring {
  top: 50%;
  left: 8%;
  color: var(--signal);
}
.chip-db {
  right: 10%;
  bottom: 24%;
  color: var(--cyan);
}
.chip-lock {
  left: 14%;
  bottom: 15%;
  color: var(--violet);
}
.ready .floating-chip {
  animation: none;
}
.chip-spring {
  animation-delay: 0.8s !important;
}
.chip-db {
  animation-delay: 1.4s !important;
}
.chip-lock {
  animation-delay: 2s !important;
}
@keyframes chip-float {
  0%,
  100% {
    translate: 0 0;
  }
  50% {
    translate: 0 -12px;
  }
}
.engine-tag {
  left: 18px;
  bottom: 16px;
  z-index: 6;
  transform: translateZ(80px);
}

.numbers {
  border-radius: 22px;
  gap: 0;
  box-shadow: var(--shadow-3d);
  background: color-mix(in srgb, var(--border) 72%, transparent);
}
.number-item {
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--bg-card) 92%, transparent),
    color-mix(in srgb, var(--bg-elev) 86%, transparent)
  );
  box-shadow: inset 0 1px 0 var(--edge-light);
}
.number {
  font-size: 34px;
  color: transparent;
  background: linear-gradient(135deg, var(--text), var(--signal));
  -webkit-background-clip: text;
  background-clip: text;
}

.project-grid {
  gap: 24px;
  perspective: 1400px;
}
.project {
  border-radius: 22px;
  transform-style: preserve-3d;
  will-change: auto;
  content-visibility: auto;
  contain-intrinsic-size: auto 560px;
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--bg-card) 96%, transparent),
    color-mix(in srgb, var(--bg-elev) 70%, transparent)
  );
  box-shadow:
    inset 0 1px 0 var(--edge-light),
    0 16px 48px rgba(0, 0, 0, 0.13);
}
.project::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  padding: 1px;
  opacity: 0;
  transition: opacity 0.25s ease;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--signal) 46%, transparent),
    color-mix(in srgb, var(--cyan) 26%, transparent),
    color-mix(in srgb, var(--violet) 30%, transparent)
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}
.project:hover {
  --hover-y: -5px;
  transform: translateY(-3px);
  box-shadow:
    0 28px 90px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 var(--edge-light);
}
.project:hover::before {
  opacity: 1;
}
.project-top {
  padding-top: 28px;
}
.project-head h3 {
  font-size: 23px;
  text-wrap: balance;
}
.badge,
.live-pill,
.project-stack span,
.filter,
.contact-link,
.skill-card,
.edu-card,
.flow-detail {
  box-shadow: inset 0 1px 0 var(--edge-light);
}
.flow-wrap {
  perspective: 900px;
}
.node-dot {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    0 8px 24px color-mix(in srgb, var(--signal) 10%, transparent);
}
.node.active .node-dot {
  box-shadow:
    0 0 0 6px var(--signal-soft),
    0 18px 46px color-mix(in srgb, var(--signal) 22%, transparent);
}
.flow-detail {
  border-radius: 16px;
  background: color-mix(in srgb, var(--bg-elev) 82%, transparent);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.project-actions a {
  position: relative;
}
.project-actions a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}
.project-actions a:hover::after {
  transform: scaleX(1);
}

.bento {
  gap: 18px;
  perspective: 1000px;
}
.bento .skill-card {
  border-radius: 22px;
  overflow: hidden;
  isolation: isolate;
  background: linear-gradient(
    150deg,
    color-mix(in srgb, var(--bg-card) 95%, transparent),
    color-mix(in srgb, var(--bg-elev) 75%, transparent)
  );
  box-shadow:
    0 14px 40px rgba(0, 0, 0, 0.12),
    inset 0 1px 0 var(--edge-light);
}
.bento .skill-card::after {
  content: "";
  position: absolute;
  inset: auto -18% -42% 30%;
  height: 92px;
  background: radial-gradient(
    circle,
    color-mix(in srgb, var(--signal) 18%, transparent),
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.2s ease;
}
.bento .skill-card:hover::after {
  opacity: 1;
}
.skill-card.feat {
  background:
    radial-gradient(
      520px 180px at 20% 0%,
      color-mix(in srgb, var(--signal) 20%, transparent),
      transparent 60%
    ),
    linear-gradient(
      140deg,
      color-mix(in srgb, var(--signal-soft) 92%, transparent),
      var(--bg-card) 62%
    );
}
.sk-tick {
  transform: rotate(45deg);
}

.timeline {
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 72px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(var(--signal), var(--wire), transparent);
  opacity: 0.58;
}
.tl-item {
  border-bottom-color: color-mix(in srgb, var(--border) 78%, transparent);
}
.tl-content {
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: color-mix(in srgb, var(--bg-card) 68%, transparent);
  box-shadow: inset 0 1px 0 var(--edge-light);
}

.contact-grid {
  border-radius: 22px;
  overflow: visible;
  gap: 14px;
  background: transparent;
}
.contact-link {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--bg-card) 92%, transparent),
    color-mix(in srgb, var(--bg-elev) 75%, transparent)
  );
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}
.contact-link:hover {
  --hover-y: -4px;
  transform: translateY(-3px);
  box-shadow: 0 20px 54px rgba(0, 0, 0, 0.18);
}
.copy-btn {
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg-card) 78%, transparent);
}
.to-top {
  border-radius: 50%;
  box-shadow:
    0 16px 44px rgba(0, 0, 0, 0.18),
    inset 0 1px 0 var(--edge-light);
}

@media (max-width: 900px) {
  .hero {
    padding-top: 78px;
  }
  .hero::before {
    inset: 28px 16px auto;
    height: 360px;
  }
  .hero-engine {
    transform: none;
    min-height: 430px;
  }
  .timeline::before {
    left: 0;
    opacity: 0.22;
  }
}
@media (max-width: 580px) {
  .hero::before {
    display: none;
  }
  .hero-proof {
    gap: 8px;
  }
  .hero-proof span {
    width: 100%;
    justify-content: space-between;
  }
  .hero-actions {
    width: 100%;
  }
  .primary-cta,
  .secondary-cta {
    width: 100%;
  }
  .hero-machine {
    padding: 12px 10px;
    overflow-x: auto;
  }
  .hero-engine {
    min-height: 360px;
    border-radius: 22px;
  }
  .holo-console {
    top: 12px;
    left: 12px;
    right: 12px;
  }
  .orbit-shell {
    inset: 22% 8% 20%;
  }
  .orbit-core {
    width: 60px;
    height: 60px;
    border-radius: 20px;
  }
  .floating-chip {
    font-size: 9.5px;
    padding: 6px 8px;
  }
  .chip-java {
    top: 20%;
    right: 5%;
  }
  .chip-spring {
    top: 52%;
    left: 5%;
  }
  .chip-db {
    right: 5%;
    bottom: 23%;
  }
  .chip-lock {
    left: 8%;
    bottom: 14%;
  }
  .project,
  .bento .skill-card,
  .contact-link {
    border-radius: 18px;
  }
  .number {
    font-size: 28px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ready .ring-a,
  .ready .ring-b,
  .ready .ring-c,
  .ready .floating-chip {
    animation: none !important;
  }
  .hero-engine,
  .project {
    transform: none !important;
  }
}

/* Smooth scroll-depth layer: keep 3D as a hero accent, not a page-wide effect. */
.hero-engine.scroll-depth {
  transform: perspective(1200px)
    translate3d(
      0,
      calc(var(--reveal-y, 0px) + var(--depth-y, 0px) + var(--hover-y, 0px)),
      var(--depth-z, 0px)
    )
    rotateX(var(--depth-base-rx, 0deg)) rotateY(var(--depth-base-ry, 0deg))
    rotateX(var(--depth-rx, 0deg)) rotateY(var(--depth-ry, 0deg))
    scale(var(--depth-scale, 1));
}
.js .hero-engine.scroll-depth {
  --reveal-y: 16px;
  opacity: 0;
  animation: none;
  transition:
    opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1),
    transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.ready .hero-engine.scroll-depth {
  --reveal-y: 0px;
  opacity: 1;
  animation: none;
}
@media (max-width: 760px) {
  .depth-lights,
  .grain,
  .cursor-dot,
  .cursor-ring {
    display: none !important;
  }
  .hero-engine.scroll-depth {
    --depth-y: 0px !important;
    --depth-z: 0px !important;
    --depth-rx: 0deg !important;
    --depth-ry: 0deg !important;
    --depth-scale: 1 !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-depth,
  .hero-engine.scroll-depth {
    transform: none !important;
    will-change: auto !important;
  }
}

.hero-grid {
  display: block;
}
.hero-copy {
  max-width: 860px;
}

.marquee-track {
  animation: marquee 28s linear infinite !important;
}
.marquee:hover .marquee-track {
  animation-play-state: running !important;
}