/* ==========================================================
   Hardik Sharma — Research Lab Portfolio v2
   Dark by default · cinematic · single electric accent.
   Strict 8-step type scale. No editorial magazine vibes.
   ========================================================== */

:root {
  /* DARK (default) */
  --bg:        #0a0a0b;
  --bg-1:      #111114;
  --bg-2:      #16161b;
  --bg-3:      #1d1d24;
  --line:      rgba(255,255,255,0.08);
  --line-2:    rgba(255,255,255,0.14);

  --fg:        #f4f1ea;
  --fg-2:      #c8c5bd;
  --fg-3:      #8b8881;
  --fg-4:      #5a5853;

  --accent:        #c2f53b;          /* electric lime */
  --accent-fg:     #0a0a0b;          /* fg color when on accent bg */
  --accent-glow:   rgba(194,245,59,0.4);
  --accent-soft:   rgba(194,245,59,0.10);

  --warn:      #ff5b3a;              /* used for FAKE verdict */
  --warn-soft: rgba(255,91,58,0.16);

  /* Type scale (strict, no clamp chaos) */
  --t-display: 72px;
  --t-h1:      48px;
  --t-h2:      32px;
  --t-h3:      22px;
  --t-lead:    18px;
  --t-body:    15px;
  --t-small:   13px;
  --t-micro:   11px;

  /* Fonts */
  --display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --body:    "Inter", system-ui, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, monospace;

  --rad-sm: 6px;
  --rad-md: 10px;
  --rad-lg: 16px;
  --rad-xl: 22px;
}

.portfolio-root[data-theme="light"] {
  --bg:    #f7f5f0;
  --bg-1:  #efeee8;
  --bg-2:  #e7e5dd;
  --bg-3:  #ddd9cf;
  --line:  rgba(0,0,0,0.08);
  --line-2:rgba(0,0,0,0.14);

  --fg:    #14140f;
  --fg-2:  #3a3a33;
  --fg-3:  #6c685e;
  --fg-4:  #9a9588;

  --accent-fg:    #0a0a0b;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--body);
  font-size: var(--t-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.portfolio-root {
  background: var(--bg);
  color: var(--fg);
  overflow-x: hidden;
  container-type: inline-size;
  transition: background 280ms ease, color 280ms ease;
  font-feature-settings: "ss01" 1, "cv11" 1;
}

/* ——— Type primitives ——— */
.t-display { font-family: var(--display); font-size: var(--t-display); line-height: 0.96; letter-spacing: -0.04em; font-weight: 500; }
.t-h1      { font-family: var(--display); font-size: var(--t-h1);      line-height: 1.04; letter-spacing: -0.025em; font-weight: 500; }
.t-h2      { font-family: var(--display); font-size: var(--t-h2);      line-height: 1.1;  letter-spacing: -0.02em;  font-weight: 500; }
.t-h3      { font-family: var(--display); font-size: var(--t-h3);      line-height: 1.2;  letter-spacing: -0.015em; font-weight: 500; }
.t-lead    { font-size: var(--t-lead); line-height: 1.5; color: var(--fg-2); font-weight: 400; }
.t-body    { font-size: var(--t-body); line-height: 1.6; color: var(--fg-2); }
.t-small   { font-size: var(--t-small); line-height: 1.5; color: var(--fg-3); }
.t-micro {
  font-family: var(--mono);
  font-size: var(--t-micro);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  font-weight: 500;
}
.num { font-feature-settings: "tnum" 1; font-variant-numeric: tabular-nums; }

/* ——— Layout shells ——— */
.shell { padding: 0 56px; max-width: 1400px; margin: 0 auto; }

/* ——— Nav ——— */
.pf-nav {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.pf-nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 56px;
  max-width: 1400px; margin: 0 auto;
}
.pf-brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--fg);
}
.pf-brand .mark {
  width: 22px; height: 22px;
  background: var(--accent);
  border-radius: 6px;
  display: grid; place-items: center;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-fg);
  letter-spacing: 0;
}
.pf-nav ul {
  list-style: none;
  display: flex;
  gap: 6px;
}
.pf-nav a {
  font-family: var(--body);
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-2);
  text-decoration: none;
  padding: 7px 12px;
  border-radius: var(--rad-sm);
  transition: background 160ms ease, color 160ms ease;
}
.pf-nav a:hover { background: var(--bg-2); color: var(--fg); }
.pf-status {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--fg-3);
}
.pf-status .led {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft), 0 0 10px var(--accent-glow);
  animation: led-pulse 1.8s ease-in-out infinite;
}
@keyframes led-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ——— Buttons ——— */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--body);
  font-size: 13px;
  font-weight: 500;
  padding: 11px 18px;
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  color: var(--fg);
  text-decoration: none;
  cursor: pointer;
  border-radius: var(--rad-md);
  transition: all 160ms ease;
}
.btn:hover { background: var(--bg-3); border-color: var(--fg-3); }
.btn.primary {
  background: var(--accent); color: var(--accent-fg);
  border-color: var(--accent);
}
.btn.primary:hover {
  background: var(--accent); border-color: var(--accent);
  filter: brightness(1.05);
  box-shadow: 0 0 0 4px var(--accent-soft), 0 8px 24px var(--accent-glow);
}
.btn .arr { transition: transform 180ms ease; }
.btn:hover .arr { transform: translateX(3px); }

/* ——— HERO ——— */
.hero {
  position: relative;
  padding: 56px 56px 80px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 50% at 80% 0%, var(--accent-soft), transparent 60%),
    radial-gradient(40% 30% at 10% 100%, var(--accent-soft), transparent 70%);
  pointer-events: none;
  opacity: 0.7;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  background-position: -1px -1px;
  opacity: 0.4;
  pointer-events: none;
  mask-image: radial-gradient(80% 80% at 50% 50%, #000, transparent 90%);
}
.hero-inner {
  position: relative;
  max-width: 1400px; margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line-2);
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--fg-2);
  background: var(--bg-2);
  margin-bottom: 28px;
}
.hero-tag .pulse {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}
.hero-name {
  font-family: var(--display);
  font-size: var(--t-display);
  line-height: 0.96;
  letter-spacing: -0.04em;
  font-weight: 500;
  color: var(--fg);
  margin-bottom: 20px;
}
.hero-name .accent { color: var(--accent); }
.hero-role {
  font-family: var(--body);
  font-size: 16px;
  font-weight: 500;
  color: var(--fg-2);
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 12px;
  flex-wrap: wrap;
}
.hero-role .sep {
  width: 24px; height: 1px; background: var(--fg-4);
  display: inline-block;
}
.hero-role .ticker {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0;
}
.hero-bio {
  font-size: var(--t-lead);
  line-height: 1.5;
  color: var(--fg-2);
  max-width: 52ch;
  margin-bottom: 28px;
}
.hero-bio em {
  color: var(--fg);
  font-style: normal;
  position: relative;
}
.hero-bio em::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 6px;
  background: var(--accent);
  opacity: 0.35;
  z-index: -1;
}
.hero-ctas { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-stack {
  display: flex; align-items: center; gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.hero-stack .label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.hero-stack .stack-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.stack-tag {
  font-family: var(--mono);
  font-size: 11px;
  padding: 4px 9px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--rad-sm);
  color: var(--fg-2);
}

/* Hero portrait — large, dramatic */
.hero-portrait {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--rad-lg);
  overflow: hidden;
  background: var(--bg-2);
  border: 1px solid var(--line);
}
.hero-portrait img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 18%;
  filter: contrast(1.04) saturate(0.95);
}
.hero-portrait::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10,10,11,0.65) 100%);
  pointer-events: none;
}
.hero-portrait .nameplate {
  position: absolute;
  left: 14px; right: 14px; bottom: 14px;
  display: flex; justify-content: space-between; align-items: flex-end;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--fg);
  text-transform: uppercase;
}
.hero-portrait .nameplate .l { display: flex; flex-direction: column; gap: 2px; }
.hero-portrait .nameplate .l strong {
  font-family: var(--display);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--fg);
}
.hero-portrait .nameplate .l span { color: rgba(244,241,234,0.6); font-size: 10px; }
.hero-portrait .nameplate .r {
  display: flex; flex-direction: column; gap: 2px; align-items: flex-end;
  color: rgba(244,241,234,0.7); font-size: 10px;
}
.hero-portrait .corner {
  position: absolute;
  width: 16px; height: 16px;
  border: 1px solid var(--accent);
}
.hero-portrait .corner.tl { top: 10px; left: 10px; border-right: 0; border-bottom: 0; }
.hero-portrait .corner.tr { top: 10px; right: 10px; border-left: 0; border-bottom: 0; }
.hero-portrait .corner.bl { bottom: 10px; left: 10px; border-right: 0; border-top: 0; opacity: 0; }
.hero-portrait .corner.br { bottom: 10px; right: 10px; border-left: 0; border-top: 0; opacity: 0; }

/* ——— Section frame ——— */
.section {
  padding: 96px 56px;
  border-top: 1px solid var(--line);
  position: relative;
}
.section-inner { max-width: 1400px; margin: 0 auto; }
.section-head {
  display: flex; align-items: baseline; gap: 16px;
  margin-bottom: 48px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.section-head .num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 4px 8px;
  border: 1px solid var(--accent);
  border-radius: 4px;
}
.section-head h2 {
  font-family: var(--display);
  font-size: var(--t-h1);
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 500;
  color: var(--fg);
}
.section-head h2 .accent { color: var(--accent); }
.section-head .meta {
  margin-left: auto;
  font-family: var(--mono);
  font-size: var(--t-micro);
  color: var(--fg-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ——— About ——— */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}
.about-copy p { font-size: var(--t-lead); line-height: 1.55; color: var(--fg-2); margin-bottom: 18px; max-width: 56ch; }
.about-copy p:first-child {
  font-size: 22px;
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--fg);
}
.about-copy p em {
  color: var(--accent);
  font-style: normal;
  font-weight: 500;
}

.interests-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.interest-card {
  padding: 14px 16px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--rad-md);
  display: flex; flex-direction: column; gap: 6px;
  transition: border-color 180ms ease, background 180ms ease;
  cursor: default;
}
.interest-card:hover {
  border-color: var(--accent);
  background: var(--bg-2);
}
.interest-card .code {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent);
}
.interest-card .label {
  font-family: var(--display);
  font-size: 15px;
  font-weight: 500;
  color: var(--fg);
  letter-spacing: -0.01em;
}

/* ——— DEMO (cinematic) ——— */
.demo {
  background: var(--bg-1);
  padding: 96px 56px;
  border-top: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.demo::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(60% 60% at 50% 0%, var(--accent-soft), transparent 60%);
  opacity: 0.4;
  pointer-events: none;
}
.demo-inner { position: relative; max-width: 1400px; margin: 0 auto; }
.demo-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 28px;
  align-items: stretch;
}
.demo-viewer {
  position: relative;
  aspect-ratio: 4 / 5;
  max-height: 560px;
  min-width: 0;
  background: #050505;
  border-radius: var(--rad-lg);
  overflow: hidden;
  border: 1px solid var(--line-2);
}
.demo-viewer img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: filter 220ms ease;
}
.demo-panel { min-width: 0; overflow: hidden; }

.demo-mode-toggle {
  display: flex; gap: 6px; flex-wrap: wrap;
  padding: 4px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  margin: 18px 0 22px;
  width: fit-content;
}
.mode-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  border: 0; background: transparent;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-3);
  cursor: pointer;
  transition: all 180ms ease;
}
.mode-pill .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--fg-4); transition: all 180ms ease;
}
.mode-pill:hover { color: var(--fg); }
.mode-pill.active {
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 600;
}
.mode-pill.active .dot {
  background: var(--accent-fg);
  box-shadow: 0 0 8px var(--accent-fg);
}

.detail-report {
  margin-top: 28px;
  padding: 24px 26px;
  border-radius: var(--rad-lg);
  border: 1px solid var(--line);
  background: var(--bg-2);
  position: relative;
  overflow: hidden;
  animation: dr-in 380ms cubic-bezier(.2,.8,.2,1);
}
.detail-report::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
}
.detail-report.report-fake { border-color: var(--warn); }
.detail-report.report-fake::before { background: var(--warn); box-shadow: 0 0 16px var(--warn); }
.detail-report.report-real { border-color: var(--accent); }
.detail-report.report-real::before { background: var(--accent); box-shadow: 0 0 16px var(--accent); }
@keyframes dr-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.dr-head {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
  margin-bottom: 16px;
}
.dr-tag {
  font-family: var(--mono);
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--fg);
  font-weight: 600;
}
.dr-meta { font-family: var(--mono); font-size: 11px; color: var(--fg-3); letter-spacing: 0.08em; }
.dr-summary {
  font-size: 15px;
  line-height: 1.65;
  color: var(--fg-2);
  margin-bottom: 18px;
  max-width: 78ch;
}
.dr-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 24px;
}
.dr-list { list-style: none; display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.dr-list li {
  font-size: 13px;
  color: var(--fg-2);
  line-height: 1.55;
  padding-left: 18px;
  position: relative;
}
.dr-list li::before {
  content: "›";
  position: absolute; left: 0; top: 0;
  color: var(--accent);
  font-weight: 700;
}
.detail-report.report-fake .dr-list li::before { color: var(--warn); }
.dr-side {
  display: flex; flex-direction: column; gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--rad-md);
  background: var(--bg);
  align-self: start;
}
.dr-meter { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.dr-meter .k {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--fg-3);
}
.dr-meter .v { font-size: 14px; font-weight: 600; color: var(--fg); }
.dr-meter .v.fake { color: var(--warn); }
.dr-meter .v.real { color: var(--accent); }

/* Education */
.education { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }
.edu-row {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 20px;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line);
  align-items: start;
  transition: padding 200ms ease, background 200ms ease;
}
.edu-row:hover { padding-left: 12px; background: var(--bg-1); }
.e-num { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--fg-3); padding-top: 2px; }
.e-main .e-degree {
  font-family: var(--display);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin-bottom: 4px;
}
.e-main .e-school { font-size: 14px; color: var(--fg-2); margin-bottom: 4px; }
.e-main .e-school .e-loc { color: var(--fg-3); }
.e-main .e-sub {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--fg-3);
  text-transform: uppercase;
}
.e-meta {
  display: flex; flex-direction: column; align-items: flex-end; gap: 4px;
  font-family: var(--mono);
}
.e-mark {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
}
.e-period { font-size: 11px; color: var(--fg-3); letter-spacing: 0.06em; }
.demo-corner {
  position: absolute;
  width: 24px; height: 24px;
  border: 1.5px solid var(--accent);
  z-index: 4;
  transition: opacity 200ms ease;
}
.demo-corner.tl { top: 12px; left: 12px; border-right: 0; border-bottom: 0; }
.demo-corner.tr { top: 12px; right: 12px; border-left: 0; border-bottom: 0; }
.demo-corner.bl { bottom: 12px; left: 12px; border-right: 0; border-top: 0; }
.demo-corner.br { bottom: 12px; right: 12px; border-left: 0; border-top: 0; }
.demo-label {
  position: absolute;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 5px 10px;
  background: rgba(10,10,11,0.85);
  color: var(--fg);
  border: 1px solid var(--line-2);
  backdrop-filter: blur(8px);
  border-radius: var(--rad-sm);
  z-index: 5;
}
.demo-label.input { top: 16px; left: 16px; }
.demo-label.verdict {
  bottom: 16px; right: 16px;
  background: var(--warn);
  color: #fff;
  border-color: var(--warn);
  font-weight: 700;
  letter-spacing: 0.18em;
  padding: 7px 14px;
  font-size: 11px;
  box-shadow: 0 0 24px rgba(255,91,58,0.6);
  animation: verdict-in 380ms cubic-bezier(.2,.8,.2,1);
}
@keyframes verdict-in {
  0%   { transform: scale(0.7); opacity: 0; }
  60%  { transform: scale(1.08); }
  100% { transform: scale(1); opacity: 1; }
}
.demo-heatmap {
  position: absolute; inset: 0;
  pointer-events: none;
  mix-blend-mode: screen;
  z-index: 2;
}
.demo-scan {
  position: absolute; left: 0; right: 0;
  height: 1.5px;
  background: var(--accent);
  box-shadow: 0 0 14px var(--accent-glow), 0 0 28px var(--accent-glow);
  z-index: 3;
  animation: scan 2.4s linear infinite;
}
@keyframes scan {
  0%   { top: -2%; }
  100% { top: 102%; }
}
.processing-card {
  position: absolute;
  left: 16px; right: 16px; bottom: 16px;
  padding: 14px 16px;
  background: rgba(10,10,11,0.92);
  border: 1px solid var(--line-2);
  border-radius: var(--rad-md);
  backdrop-filter: blur(12px);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--fg);
  z-index: 5;
}
.processing-card .head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.processing-card .head .l { display: flex; align-items: center; gap: 8px; }
.processing-card .head .pdot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: led-pulse 0.7s infinite;
}
.processing-card .pct { color: var(--accent); font-weight: 600; }
.processing-card .track {
  height: 2px;
  background: var(--line-2);
  border-radius: 1px;
  overflow: hidden;
  margin-bottom: 10px;
}
.processing-card .fill {
  height: 100%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  transition: width 80ms linear;
}
.processing-card .steps { display: flex; flex-direction: column; gap: 3px; }
.processing-card .steps span {
  color: var(--fg-4);
  font-size: 9px;
  transition: color 220ms ease;
}
.processing-card .steps span.done { color: var(--fg); }
.processing-card .steps span.done::before { color: var(--accent); }

/* Demo panel */
.demo-panel {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--rad-lg);
  padding: 24px;
  display: flex; flex-direction: column; gap: 20px;
}
.demo-panel h3 {
  font-family: var(--display);
  font-size: var(--t-h3);
  font-weight: 500;
  letter-spacing: -0.015em;
}
.demo-panel .desc { font-size: 13px; color: var(--fg-3); line-height: 1.5; }

.demo-controls { display: flex; flex-direction: column; gap: 14px; }
.ctrl { display: flex; flex-direction: column; gap: 6px; }
.ctrl .lab {
  display: flex; justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.ctrl .lab .v { color: var(--fg); }
.ctrl input[type=range] {
  -webkit-appearance: none;
  width: 100%;
  height: 3px;
  background: var(--line-2);
  outline: none;
  cursor: pointer;
  border-radius: 2px;
}
.ctrl input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  background: var(--accent);
  cursor: grab;
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.ctrl input[type=range]::-moz-range-thumb {
  width: 14px; height: 14px;
  background: var(--accent);
  border: 0;
  border-radius: 50%;
}

.demo-readout {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.demo-readout .verdict-row {
  display: flex; align-items: baseline; gap: 14px;
  margin-bottom: 14px;
}
.demo-readout .pct {
  font-family: var(--display);
  font-size: 56px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--warn);
  font-feature-settings: "tnum" 1;
}
.demo-readout .verdict-meta {
  display: flex; flex-direction: column; gap: 2px;
}
.demo-readout .verdict-meta .vlabel {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.demo-readout .verdict-meta .vstate {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--warn);
}
.demo-readout .vstate.processing { color: var(--accent); }
.demo-readout .pct.verdict-real, .demo-readout .vstate.verdict-real { color: var(--accent); }
.demo-readout .pct.verdict-fake, .demo-readout .vstate.verdict-fake { color: var(--warn); }
.demo-readout .pct.verdict-neutral { color: var(--fg-3); }
.demo-label.verdict.real {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
}
.reason-block {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--rad-md);
  border: 1px solid var(--line);
  background: var(--bg-1);
}
.reason-block.reason-fake { border-color: var(--warn); background: var(--warn-soft); }
.reason-block.reason-real { border-color: var(--accent); background: var(--accent-soft); }
.reason-block .r-title {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg);
  margin-bottom: 6px;
}
.reason-block ul { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.reason-block li {
  font-size: 12px;
  color: var(--fg-2);
  line-height: 1.45;
  padding-left: 14px;
  position: relative;
}
.reason-block li::before {
  content: "›";
  position: absolute; left: 0; top: 0;
  color: var(--accent);
  font-weight: 700;
}
.reason-block.reason-fake li::before { color: var(--warn); }

.sample-strip {
  display: flex; flex-direction: column; gap: 8px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.sample-strip .ss-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.sample-strip .ss-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.ss-thumb {
  position: relative;
  aspect-ratio: 1/1;
  background: var(--bg);
  border: 1px solid var(--line-2);
  border-radius: var(--rad-md);
  overflow: hidden;
  padding: 0;
  cursor: pointer;
  transition: border-color 160ms ease, transform 160ms ease;
}
.ss-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: filter 160ms ease;
}
.ss-thumb:hover { border-color: var(--fg-3); transform: translateY(-2px); }
.ss-thumb.active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.ss-thumb .ss-tag {
  position: absolute;
  bottom: 6px; left: 6px;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.14em;
  padding: 2px 6px;
  border-radius: 3px;
  background: rgba(10,10,11,0.85);
  color: #fff;
  font-weight: 600;
}
.ss-thumb.ss-fake .ss-tag { background: var(--warn); }
.ss-thumb.ss-real .ss-tag { background: var(--accent); color: var(--accent-fg); }
/* Reel auto-play UI */
.reel-dots {
  position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%);
  display: flex; gap: 6px; z-index: 6;
}
.reel-dot {
  width: 22px; height: 2px; border-radius: 2px;
  background: rgba(255,255,255,0.22);
  transition: background 220ms ease, width 220ms ease;
}
.reel-dot.active { background: var(--accent); width: 36px; }

.reel-summary {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--fg-2);
  animation: reel-fade 360ms ease both;
}
.reel-summary .r-title {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 6px;
}
.reel-summary p { margin: 0; color: var(--fg); }
.reel-summary.reel-fake { border-color: rgba(255,91,58,0.4); background: rgba(255,91,58,0.06); }
.reel-summary.reel-fake .r-title { color: var(--accent); }
.reel-summary.reel-real { border-color: rgba(86,191,124,0.35); background: rgba(86,191,124,0.05); }
.reel-summary.reel-real .r-title { color: #56bf7c; }
@keyframes reel-fade {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.bar-stack { display: flex; flex-direction: column; gap: 8px; }
.bar-row {
  display: grid;
  grid-template-columns: 124px 1fr 28px;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.bar-track {
  height: 3px;
  background: var(--line-2);
  border-radius: 2px;
  overflow: hidden;
}
.bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 320ms cubic-bezier(.2,.8,.2,1);
  box-shadow: 0 0 8px var(--accent-glow);
}
.bar-val { text-align: right; color: var(--fg); }

/* ——— Experience ——— */
.timeline { display: grid; grid-template-columns: 1fr; gap: 8px; }
.tl-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 28px;
  padding: 22px 24px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--rad-lg);
  transition: border-color 200ms ease, background 200ms ease;
  cursor: pointer;
  align-items: start;
}
.tl-item:hover { border-color: var(--line-2); background: var(--bg-2); }
.tl-item .tl-period {
  font-family: var(--mono);
  font-size: var(--t-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.tl-item .tl-role {
  font-family: var(--display);
  font-size: var(--t-h3);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--fg);
  margin-bottom: 4px;
}
.tl-item .tl-org {
  font-size: 13px;
  color: var(--fg-3);
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-bottom: 8px;
}
.tl-item .tl-tag {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 100px;
  background: var(--accent-soft);
  color: var(--accent);
}
.tl-item ul {
  list-style: none;
  display: flex; flex-direction: column; gap: 4px;
  max-height: 0; overflow: hidden;
  transition: max-height 320ms ease, opacity 280ms ease, margin-top 280ms ease;
  opacity: 0;
}
.tl-item:hover ul, .tl-item.expanded ul {
  max-height: 280px;
  opacity: 1;
  margin-top: 8px;
}
.tl-item li {
  font-size: var(--t-body);
  color: var(--fg-2);
  line-height: 1.5;
  padding-left: 16px;
  position: relative;
}
.tl-item li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.65em;
  width: 6px; height: 1px;
  background: var(--accent);
}

/* ——— Publications ——— */
.pubs-list { display: flex; flex-direction: column; }
.pub-row {
  display: grid;
  grid-template-columns: 40px 1fr 160px 60px 24px;
  gap: 18px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  align-items: center;
  text-decoration: none;
  color: inherit;
  transition: background 160ms ease;
  border-radius: var(--rad-sm);
}
.pub-row:first-child { border-top: 1px solid var(--line); }
.pub-row:hover { background: var(--bg-1); }
.pub-row .p-num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--fg-3);
}
.pub-row .p-title {
  font-family: var(--display);
  font-size: var(--t-h3);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--fg);
}
.pub-row .p-venue {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fg-3);
}
.pub-row .p-year {
  font-family: var(--mono);
  font-size: 12px;
  text-align: right;
  color: var(--fg-2);
}
.pub-row .p-arr {
  text-align: right;
  color: var(--fg-3);
  transition: color 140ms ease, transform 160ms ease;
}
.pub-row:hover .p-arr { color: var(--accent); transform: translateX(3px); }

.challenges {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 32px;
}
.challenge {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--rad-md);
  padding: 18px;
  transition: border-color 200ms ease;
}
.challenge:hover { border-color: var(--accent); }
.challenge .c-name {
  font-family: var(--display);
  font-size: var(--t-h3);
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-bottom: 6px;
  color: var(--fg);
}
.challenge .c-context {
  font-size: 13px;
  color: var(--fg-3);
  line-height: 1.5;
  margin-bottom: 12px;
}
.challenge .c-result {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

/* ——— Projects ——— */
.projects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.project-card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--rad-lg);
  padding: 24px;
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color 200ms ease, background 200ms ease;
  min-height: 260px;
  position: relative;
  overflow: hidden;
}
.project-card:hover { border-color: var(--accent); background: var(--bg-2); }
.project-card .p-kind {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  display: flex; align-items: center; gap: 8px;
}
.project-card .p-kind .dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
}
.project-card .p-title {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--fg);
}
.project-card .p-blurb {
  font-size: var(--t-body);
  color: var(--fg-2);
  line-height: 1.55;
  flex: 1;
}
.project-card .p-metrics {
  display: flex; gap: 24px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.project-card .p-metric .k {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  display: block;
  margin-bottom: 4px;
}
.project-card .p-metric .v {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--accent);
}

/* ——— Skills ——— */
.skills { display: grid; grid-template-columns: 1fr; gap: 0; }
.skill-block {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.skill-block:first-child { border-top: 1px solid var(--line); }
.skill-block .s-label {
  font-family: var(--mono);
  font-size: var(--t-micro);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.skill-block .s-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.skill-chip {
  padding: 6px 12px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--rad-sm);
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-2);
  cursor: default;
  transition: all 160ms ease;
}
.skill-chip:hover {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* ——— Awards ——— */
.awards { display: flex; flex-direction: column; }
.award-row {
  display: grid;
  grid-template-columns: 40px 1fr 200px 100px;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.award-row:first-child { border-top: 1px solid var(--line); }
.award-row .a-num { font-family: var(--mono); font-size: 10px; color: var(--fg-3); }
.award-row .a-name {
  font-family: var(--display);
  font-size: var(--t-h3);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--fg);
}
.award-row .a-org { font-size: 13px; color: var(--fg-3); }
.award-row .a-year {
  font-family: var(--mono);
  font-size: 12px;
  text-align: right;
  color: var(--fg-2);
}

/* ——— Contact ——— */
.contact {
  padding: 96px 56px;
  border-top: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.contact::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(80% 80% at 50% 100%, var(--accent-soft), transparent 70%);
  pointer-events: none;
}
.contact-inner {
  position: relative;
  max-width: 1400px; margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}
.contact-lede {
  font-family: var(--display);
  font-size: 56px;
  font-weight: 500;
  line-height: 1.04;
  letter-spacing: -0.035em;
  color: var(--fg);
}
.contact-lede .accent { color: var(--accent); }
.contact-lede .stamp {
  display: inline-block;
  position: relative;
}
.contact-lede .stamp::after {
  content: "";
  position: absolute;
  left: -2px; right: -2px; bottom: 4px;
  height: 14px;
  background: var(--accent);
  opacity: 0.35;
  z-index: -1;
}
.contact-sub {
  font-size: var(--t-lead);
  color: var(--fg-2);
  margin-top: 18px;
  max-width: 40ch;
  line-height: 1.5;
}

.contact-lines { display: flex; flex-direction: column; gap: 4px; }
.contact-line {
  display: grid;
  grid-template-columns: 90px 1fr 16px;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
  text-decoration: none;
  color: var(--fg);
  font-family: var(--mono);
  font-size: 13px;
  transition: padding 140ms ease;
}
.contact-line:first-child { border-top: 1px solid var(--line); }
.contact-line .k {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.contact-line:hover { padding-left: 8px; }
.contact-line:hover .arr { color: var(--accent); }
.contact-line .arr { color: var(--fg-3); text-align: right; transition: color 140ms ease; }

/* ——— Footer ——— */
.pf-foot {
  padding: 24px 56px;
  border-top: 1px solid var(--line);
  background: var(--bg-1);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--fg-3);
  display: flex; justify-content: space-between;
}

/* ==========================================================
   RESPONSIVE — container queries (works inside framed views)
   ========================================================== */
@container (max-width: 1100px) {
  :root { --t-display: 60px; --t-h1: 40px; }
  .hero { padding: 40px 36px 64px; }
  .hero-inner { gap: 40px; }
  .section, .demo, .contact, .pf-foot { padding-left: 36px; padding-right: 36px; }
  .pf-nav-inner { padding-left: 36px; padding-right: 36px; }
  .shell { padding: 0 36px; }
}
@container (max-width: 900px) {
  :root { --t-display: 52px; --t-h1: 36px; --t-h2: 28px; --t-h3: 20px; }
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .demo-grid { grid-template-columns: 1fr; gap: 20px; }
  .demo-viewer { aspect-ratio: 4 / 5; max-height: 480px; }
  .dr-grid { grid-template-columns: 1fr; gap: 16px; }
  .edu-row { grid-template-columns: 40px 1fr; gap: 12px; }
  .edu-row .e-meta { grid-column: 1 / -1; flex-direction: row; align-items: baseline; gap: 12px; padding-top: 6px; }
  .interests-grid { grid-template-columns: 1fr; }
  .tl-item { grid-template-columns: 1fr; gap: 6px; }
  .pub-row { grid-template-columns: 32px 1fr 60px 20px; }
  .pub-row .p-venue { display: none; }
  .projects { grid-template-columns: 1fr; }
  .side-projects { grid-template-columns: 1fr; }
  .challenges { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; gap: 36px; }
  .contact-lede { font-size: 40px; }
  .award-row { grid-template-columns: 32px 1fr 80px; }
  .award-row .a-org { display: none; }
  .skill-block { grid-template-columns: 1fr; gap: 10px; padding: 16px 0; }
  .pf-nav ul { display: none; }
  .pf-status { display: none; }
}
@container (max-width: 580px) {
  :root { --t-display: 44px; --t-h1: 30px; --t-h2: 24px; --t-body: 14px; }
  .hero { padding: 28px 20px 52px; }
  .section, .demo, .contact, .pf-foot { padding-left: 20px; padding-right: 20px; }
  .section { padding-top: 64px; padding-bottom: 64px; }
  .pf-nav-inner { padding: 12px 20px; }
  .demo-readout .pct { font-size: 42px; }
  .pub-row { grid-template-columns: 1fr 60px; padding: 14px 10px; }
  .pub-row .p-num, .pub-row .p-arr { display: none; }
  .project-card { padding: 18px; min-height: 220px; }
  .side-card { padding: 18px; }
  .tl-item { padding: 18px; }
  .contact-lede { font-size: 32px; }
  .bar-row { grid-template-columns: 100px 1fr 24px; }
  .hero-portrait { aspect-ratio: 1 / 1.1; }
}

/* ——— Nav right cluster + Theme toggle ——— */
.pf-nav-right {
  display: flex; align-items: center; gap: 14px;
}
.pf-theme-toggle {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg-2);
  color: var(--fg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--rad-md);
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
  padding: 0;
}
.pf-theme-toggle:hover {
  background: var(--bg-3);
  color: var(--fg);
  border-color: var(--accent);
  transform: rotate(-12deg);
}
.pf-theme-toggle:active { transform: rotate(0deg) scale(0.95); }

/* ——— Side Projects ——— */
.side-projects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.side-card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--rad-lg);
  padding: 22px;
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color 200ms ease, background 200ms ease, transform 200ms ease;
  position: relative;
  overflow: hidden;
}
.side-card:hover {
  border-color: var(--accent);
  background: var(--bg-2);
  transform: translateY(-2px);
}
.side-card .sp-head {
  display: flex; align-items: center; justify-content: space-between;
}
.side-card .sp-kind {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  display: flex; align-items: center; gap: 8px;
}
.side-card .sp-kind .dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent-glow);
}
.side-card .sp-num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--fg-4);
}
.side-card .sp-title {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--fg);
}
.side-card .sp-blurb {
  font-size: var(--t-body);
  color: var(--fg-2);
  line-height: 1.55;
  flex: 1;
}
.side-card .sp-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.side-card .sp-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--fg-3);
  background: var(--bg-2);
  border: 1px solid var(--line);
  padding: 4px 8px;
  border-radius: 999px;
}
.side-card .sp-actions {
  display: flex; gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  margin-top: 4px;
}
.side-card .sp-btn {
  flex: 1;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font-family: var(--body);
  font-size: 12px;
  font-weight: 500;
  padding: 9px 14px;
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  color: var(--fg);
  text-decoration: none;
  border-radius: var(--rad-sm);
  transition: all 160ms ease;
}
.side-card .sp-btn:hover { background: var(--bg-3); border-color: var(--fg-3); }
.side-card .sp-btn.primary {
  background: var(--accent); color: var(--accent-fg);
  border-color: var(--accent);
}
.side-card .sp-btn.primary:hover {
  filter: brightness(1.05);
  box-shadow: 0 0 0 3px var(--accent-soft), 0 6px 18px var(--accent-glow);
}
.side-card .sp-btn .arr { transition: transform 180ms ease; }
.side-card .sp-btn:hover .arr { transform: translate(2px, -2px); }