/* ═══════════════════════════════════════════════════════════
   MISHIE MANGARATEKE — UML DIAGRAM PORTFOLIO
   Palette: Near-black mocha · Warm white · Gold · Tech blue
   ═══════════════════════════════════════════════════════════ */

/* ── TOKENS ──────────────────────────────────────────────── */
:root {
  --bg:          #0E0805;
  --surface:     #1A0F0A;
  --node-bg:     #201510;
  --node-bg-h:   #2A1B10;
  --border:      #C9A040;
  --border-dim:  rgba(201,160,64,0.2);
  --border-mid:  rgba(201,160,64,0.5);
  --text:        #FAF7F2;
  --text-mono:   #E8C65A;
  --text-muted:  #8A7A6A;
  --tech:        #63B3ED;
  --tech-dim:    rgba(99,179,237,0.15);
  --grid:        rgba(201,160,64,0.055);
  --gold-glow:   rgba(201,160,64,0.12);

  --font-d:  'Cormorant Garamond', Georgia, serif;
  --font-m:  'Space Mono', 'Courier New', monospace;
  --font-b:  'Jost', system-ui, sans-serif;

  --t-fast: 180ms;
  --t-med:  360ms;
  --t-slow: 560ms;
  --ease:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);

  --nav-h: 52px;
  --r:     3px;
}

/* ── SCREEN-READER ONLY ──────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── RESET ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-b);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  cursor: none;
}
button { cursor: none; border: none; background: none; font: inherit; color: inherit; }
a { color: var(--border); text-decoration: none; }
a:hover { color: var(--text-mono); }
ul { list-style: none; }
img { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--border); outline-offset: 3px; border-radius: var(--r); }
::selection { background: rgba(201,160,64,0.25); }

/* ── CUSTOM CURSOR ────────────────────────────────────────── */
#cursor {
  position: fixed; top: 0; left: 0; pointer-events: none; z-index: 9999;
  transform: translate(-50%, -50%);
  transition: opacity var(--t-fast);
}
.cursor-ring {
  width: 22px; height: 22px; border: 1.5px solid var(--border); border-radius: 50%;
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  transition: width var(--t-fast), height var(--t-fast), border-color var(--t-fast);
}
.cursor-dot {
  width: 4px; height: 4px; background: var(--border); border-radius: 50%;
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
}
body.cursor-hover .cursor-ring { width: 36px; height: 36px; border-color: var(--text-mono); }
@media (pointer: coarse) { #cursor { display: none; } body { cursor: auto; } button, a { cursor: pointer; } }

/* ── NAV ─────────────────────────────────────────────────── */
#site-nav {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); z-index: 500;
  background: rgba(14,8,5,0.85); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dim);
}
.nav-inner {
  max-width: 1400px; margin: 0 auto; height: 100%;
  display: flex; align-items: center; gap: 2rem; padding: 0 2rem;
}
.nav-logo {
  font-family: var(--font-m); font-size: 0.8rem; color: var(--border);
  letter-spacing: 0.05em; white-space: nowrap; flex-shrink: 0;
  transition: color var(--t-fast);
}
.nav-logo:hover { color: var(--text-mono); }
.nav-links {
  display: flex; align-items: center; gap: 1.6rem; margin-left: auto;
}
.nav-link {
  font-family: var(--font-m); font-size: 0.72rem; color: var(--text-muted);
  letter-spacing: 0.04em; position: relative;
  transition: color var(--t-fast);
}
.nav-link::after {
  content: ''; position: absolute; bottom: -3px; left: 0; right: 0; height: 1px;
  background: var(--border); transform: scaleX(0); transform-origin: left;
  transition: transform var(--t-med) var(--ease);
}
.nav-link:hover, .nav-link.active { color: var(--border); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-burger {
  display: none; flex-direction: column; gap: 5px; padding: 8px; margin-left: auto;
  width: 44px; height: 44px; align-items: center; justify-content: center;
}
.nav-burger span {
  display: block; width: 20px; height: 1.5px; background: var(--border);
  transition: transform var(--t-med) var(--ease), opacity var(--t-fast);
}

/* ── BREADCRUMB ──────────────────────────────────────────── */
.breadcrumb {
  position: fixed; top: calc(var(--nav-h) + 12px); left: 1.5rem; z-index: 490;
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-m); font-size: 0.72rem;
  opacity: 0; transform: translateY(-6px);
  transition: opacity var(--t-med), transform var(--t-med) var(--ease);
}
.breadcrumb:not([hidden]) { opacity: 1; transform: translateY(0); }
.bc-back {
  color: var(--border); display: flex; align-items: center; gap: 0.4rem;
  transition: color var(--t-fast);
}
.bc-back:hover { color: var(--text-mono); }
.bc-sep { color: var(--text-muted); }
.bc-current { color: var(--text-muted); }

/* ── CANVAS VIEWPORT ─────────────────────────────────────── */
#canvas-viewport {
  position: fixed; inset: 0; top: var(--nav-h);
  /* Use dynamic viewport height where supported — this tracks the mobile
     address-bar so the canvas never extends behind it or gets clipped */
  height: calc(100vh - var(--nav-h));
  height: calc(100dvh - var(--nav-h));
  bottom: auto;
  overflow: hidden;
  transition: opacity var(--t-med), filter var(--t-med);
  touch-action: none; /* hand all touch gestures to our JS */
}
#canvas-viewport.dimmed { opacity: 0.08; filter: blur(2px); pointer-events: none; }

#diagram-canvas {
  width: 1400px; height: 900px; /* fixed = viewBox dimensions; JS handles all scaling */
  user-select: none; -webkit-user-select: none;
}

/* ── GRID ────────────────────────────────────────────────── */
.grid-dot { fill: var(--border); opacity: 0.35; }

/* ── OVERVIEW SVG ELEMENTS ───────────────────────────────── */
.system-boundary {
  fill: none; stroke: var(--border-mid); stroke-width: 1.5;
  opacity: 0; transition: opacity var(--t-slow);
}
.system-boundary.visible { opacity: 1; }

.system-tab { fill: var(--node-bg); stroke: var(--border-mid); stroke-width: 1.5; opacity: 0; }
.system-tab.visible { opacity: 1; }

.system-tab-text {
  font-family: var(--font-m); font-size: 11px; fill: var(--border); opacity: 0;
}
.system-tab-text.visible { opacity: 1; }

.system-title {
  font-family: var(--font-d); font-size: 28px; font-weight: 600; font-style: italic;
  fill: var(--text); letter-spacing: 0.08em; opacity: 0;
  transition: opacity var(--t-slow);
}
.system-title.visible { opacity: 1; }

.system-subtitle {
  font-family: var(--font-m); font-size: 11px; fill: var(--border); letter-spacing: 0.25em;
  text-transform: uppercase; opacity: 0;
  transition: opacity var(--t-slow);
}
.system-subtitle.visible { opacity: 1; }

/* Connectors */
.connector {
  fill: none; stroke: var(--border); stroke-width: 1.3;
  stroke-dasharray: 1000; stroke-dashoffset: 1000;
  transition: stroke-dashoffset 0.8s var(--ease), opacity var(--t-fast);
  opacity: 0.7;
}
.connector.drawn { stroke-dashoffset: 0; }
.conn-label {
  font-family: var(--font-m); font-size: 9px; fill: var(--text-muted);
  letter-spacing: 0.04em; opacity: 0;
  transition: opacity var(--t-slow);
}
.conn-label.visible { opacity: 1; }

/* UML Nodes */
.uml-node { cursor: none; transition: opacity var(--t-slow); }
.node-bg {
  fill: var(--node-bg); stroke: var(--border); stroke-width: 1.5;
  transition: fill var(--t-fast), stroke var(--t-fast), filter var(--t-fast);
}
.uml-node:hover .node-bg { fill: var(--node-bg-h); filter: url(#node-glow); stroke-width: 2; stroke: var(--text-mono); }
.uml-node:focus .node-bg { stroke: var(--text-mono); stroke-width: 2; }

.node-div { stroke: var(--border-mid); stroke-width: 1; }

.node-stereo {
  font-family: var(--font-m); font-size: 9.5px; fill: var(--border); letter-spacing: 0.04em;
}

.node-name {
  font-family: var(--font-d); font-size: 16px; font-weight: 600; fill: var(--text);
  letter-spacing: 0.12em;
}
.uml-node:hover .node-name { fill: var(--text-mono); }

.node-hint {
  font-family: var(--font-m); font-size: 8.5px; fill: var(--text-muted); letter-spacing: 0.06em;
  opacity: 0.7;
}

/* Node click label */
.node-click-hint {
  font-family: var(--font-m); font-size: 7.5px; fill: var(--border); letter-spacing: 0.08em;
  opacity: 0; transition: opacity var(--t-fast);
}
.uml-node:hover .node-click-hint { opacity: 0.8; }

/* Canvas hint — sits above the fixed footer (~32px tall) */
.canvas-hint {
  position: absolute; bottom: calc(1.5rem + 36px); left: 50%; transform: translateX(-50%);
  font-family: var(--font-m); font-size: 0.65rem; color: var(--text-muted);
  letter-spacing: 0.12em; pointer-events: none;
  opacity: 0; transition: opacity var(--t-med);
  animation: hint-appear 1s var(--ease) 2.5s forwards;
}
.canvas-hint.hint-visible { opacity: 0.5; animation: none; }
@keyframes hint-appear { to { opacity: 0.5; } }
@keyframes fade-in { to { opacity: 0.5; } }

/* Footer (always visible below canvas) */
#site-footer {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: center; gap: 0.8rem;
  padding: 0.5rem 1rem; z-index: 400;
  font-family: var(--font-m); font-size: 0.62rem; color: var(--text-muted);
  letter-spacing: 0.08em; pointer-events: none;
  opacity: 0; transition: opacity var(--t-med);
}
#site-footer.footer-visible { opacity: 1; }
.ft-name { color: var(--border); }
.ft-sep { color: var(--border-dim); }

/* ═══════════════════════════════════════════════════════════
   DETAIL PANELS (shared)
   ═══════════════════════════════════════════════════════════ */
.detail-panel {
  position: fixed; inset: 0;
  top: calc(var(--nav-h) + 44px); /* sits below the breadcrumb — content can never scroll behind it */
  z-index: 300;
  overflow: hidden;
  opacity: 0; pointer-events: none;
  transition: opacity var(--t-med);
}
.detail-panel:not([hidden]) { opacity: 1; pointer-events: auto; }

.detail-scroll {
  height: 100%; overflow-y: auto; overflow-x: hidden;
  padding: 1.5rem 3rem 4rem;
  scrollbar-width: thin; scrollbar-color: var(--border-dim) transparent;
}
.detail-scroll::-webkit-scrollbar { width: 4px; }
.detail-scroll::-webkit-scrollbar-track { background: transparent; }
.detail-scroll::-webkit-scrollbar-thumb { background: var(--border-dim); border-radius: 2px; }

/* Diagram header */
.diagram-header {
  display: flex; align-items: baseline; gap: 1rem; margin-bottom: 2.5rem;
  padding-bottom: 1rem; border-bottom: 1px solid var(--border-dim);
}
.diag-badge {
  font-family: var(--font-m); font-size: 0.65rem; color: var(--bg);
  background: var(--border); padding: 3px 8px; border-radius: 2px;
  letter-spacing: 0.08em; text-transform: uppercase; white-space: nowrap;
}
.diag-title {
  font-family: var(--font-m); font-size: 1.2rem; color: var(--border);
  font-weight: 400; letter-spacing: 0.06em;
}

/* ─── UML CLASS (shared component) ───────────────────────── */
.uml-class {
  border: 1px solid var(--border); border-radius: var(--r);
  background: var(--node-bg); font-family: var(--font-m); font-size: 0.8rem;
  overflow: hidden;
}
.cls-head {
  padding: 0.9rem 1rem 0.8rem;
  border-bottom: 1px solid var(--border-dim);
  text-align: center;
}
.cls-stereo {
  font-size: 0.68rem; color: var(--border); letter-spacing: 0.04em; margin-bottom: 4px;
}
.cls-name {
  font-family: var(--font-d); font-size: 1.2rem; font-style: italic; font-weight: 600;
  color: var(--text); letter-spacing: 0.02em;
}
.cls-body {
  padding: 0.6rem 1rem; border-bottom: 1px solid var(--border-dim);
  display: flex; flex-direction: column; gap: 0.25rem;
}
.cls-body:last-child { border-bottom: none; }
.cls-attr {
  font-size: 0.76rem; color: var(--text-muted); line-height: 1.5;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cls-attr em { color: var(--text-mono); font-style: normal; }
.cls-attr .attr-true { color: #68D391; }
.cls-method {
  font-size: 0.76rem; color: var(--text); line-height: 1.5;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  cursor: none; padding: 2px 4px; border-radius: 2px; margin-left: -4px;
  transition: background var(--t-fast), color var(--t-fast);
}
.cls-method:hover { background: rgba(201,160,64,0.1); color: var(--text-mono); }

/* ═══════════════════════════════════════════════════════════
   PROFILE — Class Diagram
   ═══════════════════════════════════════════════════════════ */
.class-diagram-wrap {
  display: flex; flex-direction: column; align-items: flex-start; gap: 0; max-width: 900px;
}
.uml-class--main { min-width: 480px; max-width: 600px; width: 100%; }
.uml-class--main .cls-name { font-size: 1.5rem; }

/* Stat row */
.stat-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem; margin-top: 2.5rem; width: 100%;
}
.stat-assoc {
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
}
.sa-line {
  width: 1px; height: 30px; background: var(--border-mid);
  position: relative;
}
.sa-line::after {
  content: ''; position: absolute; bottom: 0; left: 50%;
  transform: translateX(-50%);
  border-left: 5px solid transparent; border-right: 5px solid transparent;
  border-top: 7px solid var(--border);
}
.uml-class--stat { width: 100%; text-align: center; }
.uml-class--stat .cls-name { font-size: 0.85rem; font-style: normal; }
.uml-class--stat .cls-attr { text-align: center; }
.sa-label {
  font-family: var(--font-m); font-size: 0.62rem; color: var(--border);
  letter-spacing: 0.04em; margin-top: 4px;
}
.count-num { color: var(--text-mono); font-size: 1.1rem; }

/* Stat source attribution */
.stat-source {
  display: flex; align-items: center; gap: 0.5rem;
  margin-top: 0.9rem; flex-wrap: wrap;
  font-family: var(--font-m); font-size: 0.62rem; letter-spacing: 0.04em;
}
.ss-pill {
  background: var(--border); color: var(--bg);
  padding: 2px 7px; border-radius: 2px;
  font-size: 0.58rem; letter-spacing: 0.06em; flex-shrink: 0;
}
.ss-project {
  font-family: var(--font-m); font-size: 0.62rem; letter-spacing: 0.06em;
  color: var(--border);
  text-decoration: underline; text-underline-offset: 3px;
  text-decoration-color: rgba(201,160,64,0.35);
  transition: color var(--t-fast); cursor: none;
}
.ss-project:hover { color: var(--text-mono); }
.ss-desc { color: var(--text-muted); }
.ss-sep  { color: var(--border-dim); }
.ss-url  { color: var(--text-muted); transition: color var(--t-fast); }
.ss-url:hover { color: var(--border); }

/* Education association */
.edu-assoc {
  display: flex; flex-direction: column; align-items: flex-start; gap: 0;
  margin-top: 2.5rem; width: 100%;
}
.ea-line {
  width: 1px; height: 40px; background: var(--border-mid); margin-left: 240px;
  position: relative;
}
.ea-line::after {
  content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  border-left: 5px solid transparent; border-right: 5px solid transparent;
  border-top: 7px solid var(--border-mid);
}
.ea-label {
  font-family: var(--font-m); font-size: 0.62rem; color: var(--text-muted);
  margin-left: 248px; margin-bottom: 6px; letter-spacing: 0.04em;
}
.uml-class--edu { max-width: 660px; width: 100%; }
.uml-class--edu .cls-body { gap: 0.45rem; }
.uml-class--edu .cls-attr { white-space: normal; }

/* Method tooltip */
.method-tip {
  position: fixed; bottom: 4rem; left: 50%; transform: translateX(-50%);
  background: var(--node-bg); border: 1px solid var(--border);
  padding: 0.6rem 1.2rem; border-radius: var(--r);
  font-family: var(--font-b); font-size: 0.82rem; color: var(--text);
  max-width: 440px; text-align: center; z-index: 600;
  box-shadow: 0 8px 30px rgba(0,0,0,0.5);
  animation: tip-in var(--t-med) var(--ease);
}
@keyframes tip-in { from { opacity:0; transform: translateX(-50%) translateY(8px); } }

/* ═══════════════════════════════════════════════════════════
   SKILLS — Package Diagram
   ═══════════════════════════════════════════════════════════ */
.filter-bar {
  display: flex; gap: 0.75rem; margin-bottom: 2rem; flex-wrap: wrap;
}
.filter-btn {
  font-family: var(--font-m); font-size: 0.65rem; letter-spacing: 0.1em;
  color: var(--text-muted); border: 1px solid var(--border-dim);
  padding: 6px 14px; border-radius: 2px;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.filter-btn:hover { color: var(--border); border-color: var(--border); }
.filter-btn.active { color: var(--bg); background: var(--border); border-color: var(--border); }

.pkg-diagram {
  display: flex; align-items: flex-start; gap: 2rem; flex-wrap: wrap;
}
.uml-pkg {
  border: 1px solid var(--border); border-radius: var(--r);
  background: var(--node-bg); min-width: 260px; flex: 1;
  transition: opacity var(--t-med);
}
.uml-pkg.hidden { opacity: 0.2; }
.pkg-tab {
  font-family: var(--font-m); font-size: 0.7rem; color: var(--bg);
  background: var(--border); padding: 4px 12px; letter-spacing: 0.06em;
  border-bottom: none;
}
.pkg-body { padding: 0.75rem; display: flex; flex-direction: column; gap: 0.5rem; }
.pkg-cls {
  border: 1px solid var(--border-dim); border-radius: 2px; padding: 0.5rem 0.75rem;
  font-family: var(--font-m); font-size: 0.72rem; color: var(--text-muted);
  transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast);
}
.pkg-cls:hover { border-color: var(--border); color: var(--text); background: rgba(201,160,64,0.06); }
.pkg-cls.hidden { opacity: 0.15; }
.pkg-cls--detail { display: flex; flex-direction: column; gap: 3px; }
.pkc-name { color: var(--text); font-size: 0.73rem; }
.pkc-sub { color: var(--tech); font-size: 0.65rem; }

.pkg-arrow-row {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 1rem 0.5rem; gap: 4px; align-self: center;
}
.pkg-arrow-svg { width: 90px; height: 24px; }
.pkg-uses-txt { font-family: var(--font-m); font-size: 0.62rem; color: var(--border); letter-spacing: 0.04em; }

/* ═══════════════════════════════════════════════════════════
   EXPERIENCE — Sequence Diagram
   ═══════════════════════════════════════════════════════════ */
.seq-diagram { max-width: 900px; }
.seq-context {
  font-family: var(--font-m); font-size: 0.7rem; color: var(--border);
  letter-spacing: 0.06em; margin-bottom: 1.2rem; padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--border-dim);
}
.seq-frame { overflow-x: auto; }
.seq-heads {
  display: flex; border-bottom: 1px solid var(--border-dim);
  margin-bottom: 0;
}
.seq-ll-head {
  flex: 1; text-align: center; padding: 0.5rem 0.25rem;
  font-family: var(--font-m); font-size: 0.7rem; color: var(--text-mono);
  border: 1px solid var(--border-dim); border-bottom: none;
  background: var(--node-bg); letter-spacing: 0.06em;
}
.seq-ll-head:first-child { border-radius: var(--r) 0 0 0; }
.seq-ll-head:last-child { border-radius: 0 var(--r) 0 0; }

.seq-body {
  border: 1px solid var(--border-dim); border-top: none;
  border-radius: 0 0 var(--r) var(--r);
  background: rgba(14,8,5,0.5); padding: 1.5rem 0;
  position: relative;
}
/* Lifeline vertical dashes via CSS */
.seq-body::before {
  content: '';
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(
    to right,
    transparent calc(var(--ll-pct, 25%) * 0 + var(--ll-pct, 25%) / 2 - 0.5px),
    var(--border-dim) calc(var(--ll-pct, 25%) * 0 + var(--ll-pct, 25%) / 2 - 0.5px),
    var(--border-dim) calc(var(--ll-pct, 25%) * 0 + var(--ll-pct, 25%) / 2 + 0.5px),
    transparent calc(var(--ll-pct, 25%) * 0 + var(--ll-pct, 25%) / 2 + 0.5px)
  );
  pointer-events: none;
}

.seq-messages {
  display: flex; flex-direction: column; gap: 2.2rem;
  padding: 0.5rem 0; position: relative;
}

/* Each message is an arrow line spanning between lifeline columns */
.seq-msg {
  display: flex; align-items: center;
  position: relative; height: 24px;
  /* --from-left and --width set by JS */
  margin-left: var(--msg-left, 0%);
  width: var(--msg-width, 50%);
  opacity: 0;
  transition: opacity var(--t-med);
}
.seq-msg.visible { opacity: 1; }
.seq-msg::before {
  content: ''; flex: 1; height: 1px; background: var(--border);
}
.seq-msg::after {
  content: '▶'; color: var(--border); font-size: 0.7rem; line-height: 1;
  margin-left: -2px;
}
.seq-msg--ret::before { background: none; border-bottom: 1px dashed var(--border-mid); }
.seq-msg--ret::after { content: ''; }
.seq-msg--ret { flex-direction: row-reverse; }
.seq-msg--ret::before { transform: scaleX(-1); }
.seq-msg--ret .msg-txt { right: auto; left: 50%; transform: translateX(-50%); }

.seq-msg--result::before { background: var(--text-mono); }
.seq-msg--result::after { color: var(--text-mono); }

.msg-txt {
  position: absolute; top: -18px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-m); font-size: 0.62rem; color: var(--text-muted);
  white-space: nowrap; letter-spacing: 0.02em; pointer-events: none;
}
.seq-msg--result .msg-txt { color: var(--text-mono); }

/* ═══════════════════════════════════════════════════════════
   PROJECTS — Component Diagram
   ═══════════════════════════════════════════════════════════ */
.comp-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem;
}
.uml-comp {
  border: 1px solid var(--border); border-radius: var(--r);
  background: var(--node-bg); overflow: hidden;
  transition: box-shadow var(--t-med), border-color var(--t-fast);
}
.uml-comp:hover { border-color: var(--text-mono); box-shadow: 0 0 0 1px var(--text-mono), 0 20px 60px rgba(201,160,64,0.1); }

.comp-head {
  padding: 0.75rem 1rem; border-bottom: 1px solid var(--border-dim);
  display: flex; align-items: center; gap: 0.5rem;
}
.comp-stereo { font-family: var(--font-m); font-size: 0.62rem; color: var(--border); letter-spacing: 0.04em; }
.comp-name { font-family: var(--font-d); font-size: 1rem; font-style: italic; color: var(--text); margin-left: 4px; flex: 1; }
.comp-icon { font-size: 1rem; color: var(--border-mid); }

/* Placeholder visuals for no-image projects */
.comp-visual {
  height: 280px; display: flex; align-items: center; justify-content: center;
  border-bottom: 1px solid var(--border-dim);
}
.gamhr-bg { background: linear-gradient(135deg, #1a1005 0%, #0e2820 100%); }
.nnaleboi-bg { background: linear-gradient(135deg, #0d1a26 0%, #1a0f0a 100%); }
.cv-data { text-align: center; display: flex; flex-direction: column; gap: 0.3rem; }
.cvd-tag {
  font-family: var(--font-m); font-size: 0.6rem; color: var(--border);
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 4px;
}
.cvd-stat { font-family: var(--font-m); font-size: 0.95rem; color: var(--text-mono); }
.cvd-sub { font-family: var(--font-m); font-size: 0.7rem; color: var(--text-muted); }

/* Video embed */
.comp-video {
  height: 280px; overflow: hidden; border-bottom: 1px solid var(--border-dim);
  display: flex; align-items: center; justify-content: center; background: #000;
}
.project-video {
  width: 100%; height: 100%; object-fit: cover; display: block;
}

/* Carousel */
.comp-carousel {
  position: relative; height: 280px;
  overflow: hidden; border-bottom: 1px solid var(--border-dim);
  background: #0a0604;
}
.car-track { position: absolute; inset: 0; }
.car-slide {
  position: absolute; inset: 0; opacity: 0;
  transition: opacity var(--t-med); cursor: zoom-in;
}
.car-slide.active { opacity: 1; }
.car-slide img { width: 100%; height: 100%; object-fit: contain; }
.car-ctrl {
  position: absolute; bottom: 8px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 8px;
  background: rgba(14,8,5,0.7); border-radius: 20px; padding: 4px 10px;
}
.car-prev, .car-next {
  color: var(--text-muted); font-size: 1rem; line-height: 1; padding: 2px 4px;
  transition: color var(--t-fast); min-width: 24px; min-height: 24px;
  display: flex; align-items: center; justify-content: center;
}
.car-prev:hover, .car-next:hover { color: var(--border); }
.car-dots { display: flex; gap: 4px; align-items: center; }
.car-dot {
  width: 5px; height: 5px; border-radius: 50%; background: var(--text-muted);
  transition: background var(--t-fast);
}
.car-dot.active { background: var(--border); }

/* Interfaces */
.comp-ifaces {
  padding: 0.6rem 1rem; border-bottom: 1px solid var(--border-dim);
  display: flex; flex-direction: column; gap: 0.3rem; font-family: var(--font-m);
}
.iface-p { font-size: 0.65rem; color: var(--text); }
.iface-r { font-size: 0.65rem; color: var(--tech); }
.ifb { color: var(--text-muted); }
.ifs { color: var(--tech); opacity: 0.6; }

/* BSA panel */
.comp-bsa {
  padding: 0.75rem 1rem; border-bottom: 1px solid var(--border-dim);
  background: rgba(201,160,64,0.04);
  display: flex; flex-direction: column; gap: 0.6rem;
}
.bsa-r {
  font-family: var(--font-b); font-size: 0.78rem; color: var(--text-muted);
  display: flex; gap: 0.6rem; line-height: 1.5;
}
.bsa-l {
  font-family: var(--font-m); font-size: 0.6rem; color: var(--border);
  letter-spacing: 0.08em; white-space: nowrap; padding-top: 2px; min-width: 70px;
}

/* Actions */
.comp-actions {
  padding: 0.75rem 1rem; display: flex; gap: 0.75rem; flex-wrap: wrap;
}
.comp-btn {
  font-family: var(--font-m); font-size: 0.62rem; letter-spacing: 0.08em;
  padding: 6px 12px; border-radius: 2px;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.comp-btn--bsa {
  border: 1px solid var(--border); color: var(--border);
}
.comp-btn--bsa:hover { background: var(--border); color: var(--bg); }
.comp-btn--bsa.open { background: rgba(201,160,64,0.12); }
.comp-btn--live {
  border: 1px solid var(--tech); color: var(--tech);
  display: inline-flex; align-items: center;
}
.comp-btn--live:hover { background: var(--tech-dim); }

/* ═══════════════════════════════════════════════════════════
   DESIGNS — Use Case Diagram
   ═══════════════════════════════════════════════════════════ */
.uc-layout { display: flex; flex-direction: column; gap: 2rem; }
.uc-boundary {
  border: 1.5px solid var(--border-mid); border-radius: var(--r);
  padding: 2rem; position: relative;
  display: grid;
  grid-template-areas: "actor-l cases actors-r";
  grid-template-columns: 80px 1fr 80px;
  gap: 2rem; align-items: center;
}
.uc-sys-label {
  position: absolute; top: -1px; left: 1rem;
  font-family: var(--font-m); font-size: 0.65rem; color: var(--border);
  background: var(--bg); padding: 0 6px; letter-spacing: 0.06em;
}
.uc-actor-left { grid-area: actor-l; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.uc-actors-right { grid-area: actors-r; display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }
.uc-actor-r { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.actor-fig { width: 40px; height: 80px; }
.actor-name { font-family: var(--font-m); font-size: 0.62rem; color: var(--text-muted); text-align: center; letter-spacing: 0.04em; }

.uc-cases { grid-area: cases; display: flex; flex-direction: column; gap: 1rem; align-items: center; }
.uc-ellipse {
  border: 1.5px solid var(--border); border-radius: 50px;
  padding: 0.75rem 2rem; text-align: center; width: 100%; max-width: 340px;
  background: var(--node-bg);
  display: flex; flex-direction: column; gap: 3px;
  transition: background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}
.uc-ellipse:hover {
  background: rgba(201,160,64,0.08); border-color: var(--text-mono);
  box-shadow: 0 0 20px rgba(201,160,64,0.1);
}
.uce-name { font-family: var(--font-b); font-size: 0.9rem; color: var(--text); }
.uce-count { font-family: var(--font-m); font-size: 0.62rem; color: var(--border); letter-spacing: 0.04em; }

/* Galleries */
.uc-gallery {
  border: 1px solid var(--border-dim); border-radius: var(--r);
  background: var(--node-bg); overflow: hidden;
  animation: slide-up var(--t-med) var(--ease);
}
@keyframes slide-up { from { opacity:0; transform: translateY(12px); } }
.gal-head {
  padding: 0.75rem 1rem; border-bottom: 1px solid var(--border-dim);
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-m); font-size: 0.7rem; color: var(--text-muted);
}
.gal-close {
  color: var(--text-muted); font-size: 1.2rem; line-height: 1;
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  border-radius: 50%; transition: color var(--t-fast), background var(--t-fast);
}
.gal-close:hover { color: var(--text); background: rgba(255,255,255,0.05); }

.design-strip {
  display: flex; gap: 1rem; padding: 1rem; overflow-x: auto;
  scroll-snap-type: x mandatory; cursor: grab;
  scrollbar-width: thin; scrollbar-color: var(--border-dim) transparent;
}
.design-strip:active { cursor: grabbing; }
.design-strip::-webkit-scrollbar { height: 3px; }
.design-strip::-webkit-scrollbar-thumb { background: var(--border-dim); border-radius: 2px; }
.design-strip--single { justify-content: center; cursor: default; }

.ds-item {
  flex-shrink: 0; scroll-snap-align: start;
  height: 220px; overflow: hidden; border-radius: var(--r);
  border: 1px solid var(--border-dim);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  cursor: none;
}
.ds-item:hover { border-color: var(--border); box-shadow: 0 0 20px rgba(201,160,64,0.12); }
.ds-item img { height: 100%; width: auto; object-fit: cover; pointer-events: none; }
.ds-item--portrait { height: 300px; }
.ds-item--portrait img { height: 100%; width: auto; }

/* ═══════════════════════════════════════════════════════════
   CONTACT — State Machine
   ═══════════════════════════════════════════════════════════ */
.sm-layout { max-width: 680px; display: flex; flex-direction: column; gap: 1.5rem; }

.sm-visual {
  display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
  font-family: var(--font-m); font-size: 0.72rem;
}
.sm-init { color: var(--text-mono); font-size: 1rem; }
.sm-arr { color: var(--border-mid); }
.sm-state {
  border: 1.5px solid var(--border-dim); border-radius: var(--r);
  padding: 6px 14px; font-family: var(--font-m); font-size: 0.7rem;
  color: var(--text-muted); letter-spacing: 0.06em;
  transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast);
}
.sm-state.active { border-color: var(--border); color: var(--text-mono); background: rgba(201,160,64,0.08); }
.sm-state--err { border-color: rgba(252,129,74,0.3); color: rgba(252,129,74,0.5); }
.sm-state--err.active { border-color: #FC814A; color: #FC814A; background: rgba(252,129,74,0.08); }

.sm-err-row {
  display: flex; align-items: center; gap: 0.5rem;
  padding-left: calc(0.5rem + 14px + 0.5rem + 1ch + 0.5rem + 14px + 0.5rem + 1ch + 0.5rem);
  font-family: var(--font-m); font-size: 0.72rem; color: var(--border-mid);
}
.sm-ext-links {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  font-family: var(--font-m); font-size: 0.7rem;
}
.sm-ext-lbl { color: var(--text-muted); }
.sm-ext-link { color: var(--border); letter-spacing: 0.04em; transition: color var(--t-fast); }
.sm-ext-link:hover { color: var(--text-mono); }

.sm-composing-wrap {
  border: 1.5px solid var(--border-dim); border-radius: var(--r);
  background: var(--node-bg); overflow: hidden;
}
.sm-state-title {
  padding: 0.5rem 1rem; border-bottom: 1px solid var(--border-dim);
  font-family: var(--font-m); font-size: 0.68rem; color: var(--border); letter-spacing: 0.06em;
}
.sm-form { padding: 1.5rem; display: flex; flex-direction: column; gap: 1.2rem; }
.sm-field { display: flex; flex-direction: column; gap: 6px; }
.sm-lbl { font-family: var(--font-m); font-size: 0.65rem; color: var(--border); letter-spacing: 0.06em; }
.sm-input, .sm-select, .sm-textarea {
  background: rgba(14,8,5,0.6); border: 1px solid var(--border-dim); border-radius: 2px;
  color: var(--text); font-family: var(--font-m); font-size: 0.78rem;
  padding: 0.55rem 0.75rem;
  transition: border-color var(--t-fast);
}
.sm-input:focus, .sm-select:focus, .sm-textarea:focus {
  outline: none; border-color: var(--border);
}
.sm-input::placeholder, .sm-textarea::placeholder { color: var(--text-muted); opacity: 0.6; }
.sm-select option { background: var(--surface); }
.sm-textarea { resize: vertical; min-height: 90px; }
.sm-foot { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.sm-note { font-family: var(--font-m); font-size: 0.62rem; color: var(--text-muted); letter-spacing: 0.04em; }
.sm-submit {
  border: 1.5px solid var(--border); color: var(--border);
  font-family: var(--font-m); font-size: 0.72rem; letter-spacing: 0.08em;
  padding: 8px 20px; border-radius: 2px;
  transition: background var(--t-fast), color var(--t-fast);
}
.sm-submit:hover { background: var(--border); color: var(--bg); }
.sm-submit:disabled { opacity: 0.4; pointer-events: none; }
.sm-result {
  padding: 0.6rem 0.75rem; border-radius: 2px;
  font-family: var(--font-m); font-size: 0.72rem; letter-spacing: 0.04em;
  animation: fade-in 0.3s ease;
}
.sm-result--ok { background: rgba(104,211,145,0.1); border: 1px solid rgba(104,211,145,0.3); color: #68D391; }
.sm-result--err { background: rgba(252,129,74,0.1); border: 1px solid rgba(252,129,74,0.3); color: #FC814A; }

/* ═══════════════════════════════════════════════════════════
   LIGHTBOX
   ═══════════════════════════════════════════════════════════ */
.lb-backdrop {
  position: fixed; inset: 0; background: rgba(8,4,2,0.96); z-index: 800;
  opacity: 0; pointer-events: none;
  transition: opacity var(--t-med);
}
.lb-backdrop.open { opacity: 1; pointer-events: auto; }
.lightbox {
  position: fixed; inset: 0; z-index: 900;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity var(--t-med);
}
.lightbox.open { opacity: 1; pointer-events: auto; }
.lb-stage { max-width: 90vw; max-height: 90vh; display: flex; align-items: center; justify-content: center; }
.lb-img {
  max-width: 90vw; max-height: 88vh; object-fit: contain;
  border-radius: var(--r); box-shadow: 0 30px 80px rgba(0,0,0,0.7);
  transform: scale(0.95); transition: transform var(--t-slow) var(--ease);
}
.lightbox.open .lb-img { transform: scale(1); }
.lb-close { position: fixed; top: 16px; right: 16px; }
.lb-prev  { position: fixed; left: 12px; top: 50%; transform: translateY(-50%); }
.lb-next  { position: fixed; right: 12px; top: 50%; transform: translateY(-50%); }
.lb-close, .lb-prev, .lb-next {
  color: var(--text-muted); font-size: 1.5rem;
  background: rgba(14,8,5,0.8); border-radius: 50%;
  width: 42px; height: 42px; display: flex; align-items: center; justify-content: center;
  transition: color var(--t-fast), background var(--t-fast);
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover { color: var(--border); background: rgba(14,8,5,0.95); }
.lb-cap {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-m); font-size: 0.65rem; color: var(--text-muted); letter-spacing: 0.06em;
}

/* ═══════════════════════════════════════════════════════════
   MOBILE NAV
   ═══════════════════════════════════════════════════════════ */
.mobile-nav {
  position: fixed; inset: 0; z-index: 700;
  background: rgba(14,8,5,0.98); backdrop-filter: blur(20px);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0;
  opacity: 0; transition: opacity 0.22s ease;
}
.mn-close {
  position: fixed; top: 16px; right: 16px;
  font-size: 1.6rem; color: var(--text-muted);
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  border-radius: 50%; transition: color var(--t-fast);
}
.mn-close:hover { color: var(--border); }
.mn-links { display: flex; flex-direction: column; align-items: center; gap: 0; width: 100%; }
.mn-link {
  font-family: var(--font-m); font-size: 0.8rem; color: var(--text-muted);
  letter-spacing: 0.08em; padding: 1.2rem 2rem; width: 100%; text-align: center;
  border-bottom: 1px solid var(--border-dim);
  transition: color var(--t-fast), background var(--t-fast);
}
.mn-link:hover { color: var(--border); background: rgba(201,160,64,0.05); }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — Mobile
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {

  /* Nav */
  .nav-links { display: none; }
  .nav-burger { display: flex; }
  .nav-inner { padding: 0 1rem; }

  /* Panels */
  .detail-scroll { padding: 1.2rem 1rem 4rem; }
  .diagram-header { flex-direction: column; align-items: flex-start; gap: 0.5rem; margin-bottom: 1.5rem; }
  .diag-title { font-size: 1rem; }

  /* Canvas hint */
  .canvas-hint { font-size: 0.56rem; }

  /* ── Profile ── */
  .uml-class--main { min-width: unset; max-width: 100%; width: 100%; }
  .uml-class--main .cls-name { font-size: 1.1rem; }
  .cls-attr, .cls-method { white-space: normal; font-size: 0.7rem; word-break: break-word; }
  .stat-row { grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-top: 1.5rem; }
  .edu-assoc { margin-top: 1.5rem; }
  .ea-line { margin-left: 1rem; }
  .ea-label { margin-left: 1.5rem; }
  .uml-class--edu { max-width: 100%; }
  .uml-class--edu .cls-attr { white-space: normal; font-size: 0.68rem; }
  .class-diagram-wrap { max-width: 100%; }
  .method-tip { max-width: 90vw; font-size: 0.75rem; }

  /* ── Skills ── */
  .pkg-diagram { flex-direction: column; gap: 1rem; }
  .pkg-arrow-row { flex-direction: row; padding: 0.5rem 0; }
  .uml-pkg { min-width: unset; width: 100%; }

  /* ── Experience ── */
  /* Allow the inner seq-frame to actually scroll; detail-scroll clips it otherwise */
  .detail-scroll { overflow-x: auto; }
  .seq-diagram { max-width: 100%; }
  .seq-frame { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  /* Wide enough that all 4 lifelines + absolute labels have room to breathe */
  .seq-heads, .seq-body { min-width: 600px; }
  .seq-ll-head { font-size: 0.58rem; padding: 0.4rem 0.15rem; }
  .msg-txt { font-size: 0.5rem; white-space: nowrap; }

  /* ── Projects ── */
  .comp-grid { grid-template-columns: 1fr; }
  .comp-carousel { height: 220px; }
  .comp-video { height: 220px; }
  .comp-visual { height: 200px; }
  .iface-p, .iface-r { font-size: 0.6rem; white-space: normal; word-break: break-word; }

  /* ── Designs ── */
  .uc-boundary {
    grid-template-areas: "cases" "actor-l" "actors-r";
    grid-template-columns: 1fr;
    padding: 1.5rem 1rem;
    gap: 1.2rem;
  }
  .uc-actor-left, .uc-actors-right {
    flex-direction: row; flex-wrap: wrap; justify-content: center;
  }
  .uc-actors-right { gap: 1.5rem; }
  .uc-ellipse { max-width: 100%; padding: 0.65rem 1rem; }
  .ds-item { height: 180px; }

  /* ── Contact ── */
  .sm-layout { max-width: 100%; }
  .sm-visual { font-size: 0.6rem; gap: 0.25rem; flex-wrap: wrap; }
  .sm-state { padding: 5px 10px; font-size: 0.62rem; }
  .sm-err-row { padding-left: 1rem; }
  .sm-foot { flex-direction: column; align-items: stretch; gap: 0.75rem; }
  .sm-submit { width: 100%; text-align: center; padding: 12px 20px; }
  .sm-form { padding: 1rem; }
  .sm-input, .sm-select, .sm-textarea { font-size: 16px; } /* prevents iOS zoom */

  /* ── Lightbox ── */
  .lb-prev { left: 4px; }
  .lb-next { right: 4px; }
}

@media (max-width: 480px) {
  .detail-scroll { padding: 1rem 0.85rem 4rem; }

  /* Profile */
  .stat-row { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
  .uml-class--main .cls-name { font-size: 1rem; }
  .count-num { font-size: 0.95rem; }
  .uml-class--edu .cls-attr { font-size: 0.64rem; }

  /* Skills */
  .pkg-arrow-row { display: none; }
  .pkg-cls { font-size: 0.68rem; }

  /* Sequence */
  .seq-ll-head { font-size: 0.52rem; }
  .msg-txt { font-size: 0.48rem; }

  /* Projects */
  .comp-carousel { height: 180px; }
  .comp-video { height: 180px; }
  .comp-actions { gap: 0.5rem; }
  .comp-btn { font-size: 0.6rem; padding: 6px 10px; }

  /* Designs */
  .uc-boundary { padding: 1rem 0.75rem; }
  .uce-name { font-size: 0.82rem; }
  .ds-item { height: 150px; }
  .actor-fig { width: 30px; height: 60px; }

  /* Contact */
  .sm-visual { font-size: 0.56rem; }
  .sm-ext-links { flex-direction: column; gap: 0.5rem; align-items: flex-start; }

  /* Footer */
  #site-footer { font-size: 0.56rem; gap: 0.4rem; }
  .ft-sep:last-of-type { display: none; }
}