/* The specimen frame. Every era lives under .sp[data-era=…] and can only restyle
   the same five elements: bar, stage (with the seal), note, badge, frame.
   The frame clips and contains its own paint, so no era can leak onto the page. */

.sp-block { margin: 3.25rem 0 0; }
.sp {
  --sp-bg: transparent;
  --sp-ink: var(--ink);
  --sp-muted: var(--muted);
  --sp-stroke: var(--ink);
  --sp-sw: 0.7;
  --sp-so: 0.5;
  --sp-font: var(--sans);
  position: relative;
  margin: 0;
  max-width: 34rem;
  overflow: hidden;
  contain: layout paint;
  isolation: isolate;
  background: var(--sp-bg);
  color: var(--sp-ink);
  font-family: var(--sp-font);
  overflow-wrap: anywhere;
}
.sp-bar {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline;
  gap: 0.25rem 1rem;
  font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--sp-muted);
}
.sp-stage { display: grid; justify-items: center; padding: 1.25rem 0; }
.sp-seal { display: block; width: clamp(180px, 50vw, 248px); height: auto; overflow: visible; }
.sp-seal path {
  fill: none; stroke: var(--sp-stroke); stroke-width: var(--sp-sw); stroke-opacity: var(--sp-so);
  vector-effect: non-scaling-stroke;
}
.sp-g1 { stop-color: var(--sp-g1, currentColor); }
.sp-g2 { stop-color: var(--sp-g2, currentColor); }
.sp-g3 { stop-color: var(--sp-g3, currentColor); }
.sp-g4 { stop-color: var(--sp-g4, currentColor); }
.sp-note { font-size: 0.875rem; line-height: 1.55; margin: 0; }
.sp-badge { display: inline-block; margin-top: 0.9rem; font-size: 0.72rem; }

/* No JS, or no era: the house style, just the seal. */
.sp:not([data-era]) .sp-bar,
.sp:not([data-era]) .sp-note,
.sp:not([data-era]) .sp-badge { display: none; }
.sp:not([data-era]) .sp-stage { justify-items: start; padding: 0; }
.sp:not([data-era]) .sp-seal { width: clamp(196px, 54vw, 272px); }

.sp-caption {
  font-family: var(--sans); font-size: 0.7875rem; line-height: 1.55;
  color: var(--muted); margin: 1.2rem 0 0; max-width: 34rem;
}
.sp-caption b { font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }

@media (prefers-reduced-motion: reduce) {
  .sp *, .sp *::before, .sp *::after { animation: none !important; transition: none !important; }
}

/* ---------- 1957 Swiss Style ---------- */
.sp[data-era="swiss"] {
  --sp-bg: #fff; --sp-ink: #111; --sp-stroke: #111; --sp-sw: 0.9; --sp-so: 0.75;
  --sp-font: "Helvetica Neue", Helvetica, Arial, sans-serif;
  padding-bottom: 1.25rem;
}
.sp[data-era="swiss"] .sp-bar {
  background: #e30613; color: #fff; padding: 1rem 1.25rem 1.1rem;
  text-transform: none; letter-spacing: 0.01em; align-items: flex-end;
  font-weight: 700; font-size: 0.85rem;
}
.sp[data-era="swiss"] .sp-year { order: -1; font-size: 3.2rem; line-height: 0.9; letter-spacing: -0.05em; }
.sp[data-era="swiss"] .sp-stage { justify-items: start; padding: 1.5rem 1.25rem; }
.sp[data-era="swiss"] .sp-note { padding: 0 1.25rem; font-weight: 500; max-width: 27rem; }
.sp[data-era="swiss"] .sp-badge {
  display: block; margin: 1.1rem 1.25rem 0; padding-top: 0.45rem;
  border-top: 4px solid #111; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
}

/* ---------- 1997 GeoCities ---------- */
.sp[data-era="geocities"] {
  --sp-ink: #ffff66; --sp-muted: #ff66ff; --sp-sw: 0.9; --sp-so: 0.9;
  --sp-stroke: var(--sp-grad); --sp-g1: #ff3b3b; --sp-g2: #ffe600; --sp-g3: #33ff66; --sp-g4: #33ccff;
  --sp-font: "Comic Sans MS", "Comic Sans", "Chalkboard SE", cursive;
  background:
    radial-gradient(#fff 0.8px, transparent 1.4px) 0 0 / 23px 23px,
    radial-gradient(#ffe600 0.8px, transparent 1.4px) 11px 7px / 37px 37px,
    #000033;
  padding: 1rem 1rem 1.2rem; text-align: center;
  border: 4px ridge #c0c0c0;
}
.sp[data-era="geocities"] .sp-bar {
  justify-content: center; text-transform: none; letter-spacing: 0;
  font-size: 1.45rem; font-weight: 700; text-shadow: 2px 2px 0 #000;
}
.sp[data-era="geocities"] .sp-stage::after {
  content: "Visitors: " attr(data-k);
  margin-top: 1rem; padding: 0.15rem 0.5rem;
  font: 700 0.8rem/1.4 ui-monospace, Menlo, monospace; color: #33ff66; background: #000;
  border: 2px inset #999; letter-spacing: 0.15em;
}
.sp[data-era="geocities"] .sp-note { font-size: 0.9rem; }
.sp[data-era="geocities"] .sp-badge {
  padding: 0.3rem 0.8rem; color: #000; font-weight: 700; text-transform: uppercase;
  background: repeating-linear-gradient(-45deg, #000 0 8px, #ffcc00 8px 16px);
  border: 2px solid #000;
  text-shadow: 0 0 3px #ffcc00, 0 0 3px #ffcc00, 0 0 3px #ffcc00;
  animation: sp-blink 1.1s steps(2, start) infinite;
}
@keyframes sp-blink { to { visibility: hidden; } }

/* ---------- 2014 Material Design ---------- */
.sp[data-era="material"] {
  --sp-bg: #fafafa; --sp-ink: rgba(0, 0, 0, 0.87); --sp-stroke: #3f51b5; --sp-so: 0.6;
  --sp-font: Roboto, system-ui, sans-serif;
  border-radius: 4px; padding-bottom: 1.4rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}
.sp[data-era="material"] .sp-bar {
  position: relative; z-index: 1;
  background: #3f51b5; color: #fff; padding: 1.1rem 1.25rem 1.6rem;
  text-transform: none; letter-spacing: 0.01em; font-size: 1.1rem; font-weight: 500;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
}
.sp[data-era="material"] .sp-year { font-size: 0.8rem; opacity: 0.8; }
.sp[data-era="material"] .sp-stage {
  margin: 1.5rem 1.25rem 1rem; background: #fff; border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
}
.sp[data-era="material"] .sp-note { padding: 0 1.25rem; }
.sp[data-era="material"] .sp-badge {
  position: absolute; z-index: 2; right: 1.25rem; top: 3.1rem; margin: 0;
  width: 3.5rem; height: 3.5rem; border-radius: 50%;
  display: grid; place-items: center;
  background: #ff4081; color: #fff; font-size: 1.7rem; line-height: 1;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2), 0 3px 6px rgba(0, 0, 0, 0.3);
}

/* ---------- 1994 Plain HTML ---------- */
.sp[data-era="html94"] {
  --sp-bg: #c0c0c0; --sp-ink: #000; --sp-muted: #000; --sp-stroke: #000; --sp-so: 0.7;
  --sp-font: "Times New Roman", Times, serif;
  padding: 0.9rem 1.1rem 1.1rem;
}
.sp[data-era="html94"] .sp-bar {
  justify-content: flex-start; text-transform: none; letter-spacing: 0;
  font-size: 1.6rem; font-weight: 700; padding-bottom: 0.4rem;
  border-bottom: 2px groove #f4f4f4;
}
.sp[data-era="html94"] .sp-year { font-size: 1rem; font-weight: 400; }
.sp[data-era="html94"] .sp-stage { justify-items: start; }
.sp[data-era="html94"] .sp-note { font-size: 1rem; line-height: 1.35; }
.sp[data-era="html94"] .sp-badge { color: #0000ee; text-decoration: underline; font-size: 0.95rem; }

/* ---------- 2021 Web3 ---------- */
.sp[data-era="web3"] {
  --sp-ink: #e8e6ff; --sp-muted: #b3a6ff; --sp-so: 0.9;
  --sp-stroke: var(--sp-grad); --sp-g1: #b388ff; --sp-g2: #7c4dff; --sp-g3: #00b0ff; --sp-g4: #00e5ff;
  --sp-font: system-ui, -apple-system, sans-serif;
  background:
    radial-gradient(circle at 15% 0%, #3b1a6b 0, transparent 60%),
    radial-gradient(circle at 100% 100%, #0c4a5a 0, transparent 55%),
    #0b0b1a;
  border: 1px solid rgba(157, 140, 255, 0.35); border-radius: 20px; padding: 1.4rem;
}
.sp[data-era="web3"] .sp-bar {
  text-transform: none; letter-spacing: -0.01em; font-size: 1.5rem; font-weight: 800;
  background: linear-gradient(90deg, #c7a6ff, #00e5ff); -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.sp[data-era="web3"] .sp-seal { filter: drop-shadow(0 0 10px rgba(124, 77, 255, 0.7)); }
.sp[data-era="web3"] .sp-badge {
  padding: 0.55rem 1.1rem; border-radius: 999px; font-weight: 700; font-size: 0.8rem; color: #fff;
  background: linear-gradient(90deg, #7c4dff, #00a3c4);
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.35);
}

/* ---------- 2010 Skeuomorphism ---------- */
.sp[data-era="skeuo"] {
  --sp-ink: #3a3128; --sp-stroke: #4a3322; --sp-so: 0.6;
  --sp-font: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.1) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(0, 0, 0, 0.035) 0 1px, transparent 1px 3px),
    #d6cfc1;
  border-radius: 10px; padding-bottom: 1.2rem;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.55);
}
.sp[data-era="skeuo"] .sp-bar {
  position: relative; padding: 0.8rem 1.1rem;
  background: radial-gradient(ellipse at 50% 0%, #7a5237, #5b3a24 70%), #5b3a24;
  color: #f3e6d0; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.6);
  text-transform: none; letter-spacing: 0.02em; font-weight: 700; font-size: 0.95rem;
  border-bottom: 1px solid #2d1b10;
}
.sp[data-era="skeuo"] .sp-bar::after {
  content: ""; position: absolute; inset: 5px; border: 1px dashed rgba(243, 230, 208, 0.45); border-radius: 4px;
  pointer-events: none;
}
.sp[data-era="skeuo"] .sp-stage {
  margin: 1.1rem; background: #fbf8f1; border-radius: 3px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 14px -8px rgba(0, 0, 0, 0.45);
}
.sp[data-era="skeuo"] .sp-note { padding: 0 1.1rem; }
.sp[data-era="skeuo"] .sp-badge {
  margin-left: 1.1rem; padding: 0.3rem 1rem; border-radius: 6px; font-weight: 700;
  background: linear-gradient(#f9f5ec, #d8cfbd); border: 1px solid #8f826b;
  box-shadow: inset 0 1px 0 #fff, 0 1px 1px rgba(0, 0, 0, 0.25);
}

/* ---------- 2016 Brutalism ---------- */
.sp[data-era="brutalist"] {
  --sp-bg: #fff; --sp-ink: #000; --sp-muted: #000; --sp-stroke: #000; --sp-sw: 1; --sp-so: 0.9;
  --sp-font: "Courier New", Courier, monospace;
  border: 3px solid #000;
}
.sp[data-era="brutalist"] .sp-bar {
  padding: 0.5rem 0.75rem; border-bottom: 3px solid #000; font-weight: 700; font-size: 0.9rem; letter-spacing: 0;
}
.sp[data-era="brutalist"] .sp-bar::before { content: "Index of /"; text-transform: none; }
.sp[data-era="brutalist"] .sp-name { margin-right: auto; }
.sp[data-era="brutalist"] .sp-stage { justify-items: start; padding: 1rem 0.75rem; border-bottom: 3px solid #000; }
.sp[data-era="brutalist"] .sp-note { padding: 0.75rem; font-size: 0.85rem; }
.sp[data-era="brutalist"] .sp-badge {
  display: block; margin: 0; padding: 0.5rem 0.75rem; border-top: 3px solid #000;
  background: #ffef00; font-weight: 700; text-decoration: underline;
}

/* ---------- 2006 Web 2.0 ---------- */
.sp[data-era="web20"] {
  --sp-ink: #1f2d3d; --sp-stroke: #2a78d0; --sp-so: 0.65;
  --sp-font: "Lucida Grande", "Trebuchet MS", Helvetica, sans-serif;
  background: linear-gradient(#fff, #e6f0fb) #f2f7fd;
  border: 1px solid #b7cde6; border-radius: 12px; padding-bottom: 1.3rem;
}
.sp[data-era="web20"] .sp-bar {
  padding: 0.65rem 1rem; color: #fff; text-transform: none; letter-spacing: 0;
  font-size: 1rem; font-weight: 700; text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.3);
  background: linear-gradient(#78b8f7 0, #3f8ee2 50%, #2a78d0 50%, #4a95e6 100%);
  border-radius: 11px 11px 0 0;
}
.sp[data-era="web20"] .sp-stage { padding-bottom: 3.5rem; }
.sp[data-era="web20"] .sp-seal {
  -webkit-box-reflect: below 2px linear-gradient(transparent 72%, rgba(255, 255, 255, 0.28));
}
.sp[data-era="web20"] .sp-note { padding: 0 1.2rem; }
.sp[data-era="web20"] .sp-badge {
  position: absolute; right: 0.9rem; top: 3.1rem; margin: 0;
  width: 3.6rem; height: 3.6rem; border-radius: 50%; display: grid; place-items: center;
  background: radial-gradient(circle at 35% 30%, #ffb35c, #ff7b00 60%, #e25c00);
  color: #fff; font-weight: 700; font-size: 0.8rem; text-transform: uppercase;
  transform: rotate(-14deg); box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.3);
}

/* ---------- 2012 Flat / Metro ---------- */
.sp[data-era="metro"] {
  --sp-bg: #0063b1; --sp-ink: #fff; --sp-muted: #fff; --sp-stroke: #fff; --sp-so: 0.8;
  --sp-font: "Segoe UI", system-ui, sans-serif;
  padding: 1.4rem;
}
.sp[data-era="metro"] .sp-bar {
  justify-content: flex-start; text-transform: lowercase; letter-spacing: -0.01em;
  font-size: 2rem; font-weight: 300; line-height: 1.1;
}
.sp[data-era="metro"] .sp-year { font-size: 1rem; opacity: 0.8; }
.sp[data-era="metro"] .sp-stage {
  justify-items: start; width: fit-content; max-width: 100%;
  margin: 1.1rem 0; padding: 1rem; background: #339933;
}
.sp[data-era="metro"] .sp-seal { width: clamp(160px, 44vw, 220px); }
.sp[data-era="metro"] .sp-badge {
  width: 4.75rem; height: 4.75rem; padding: 0.4rem; display: flex; align-items: flex-end;
  background: #fa6800; font-size: 0.75rem; text-transform: lowercase;
}

/* ---------- 2003 CSS Zen Garden ---------- */
.sp[data-era="zengarden"] {
  --sp-ink: #3b3a2e; --sp-muted: #4a5d23; --sp-stroke: #7a5c2e; --sp-so: 0.55;
  --sp-font: Georgia, "Times New Roman", serif;
  background: radial-gradient(circle at 100% 0%, rgba(111, 140, 60, 0.18), transparent 45%), #f4efe1;
  border: 1px solid #d8cfb0; padding: 1.25rem 1.4rem;
  box-shadow: inset 0 0 0 6px #f4efe1, inset 0 0 0 7px #d8cfb0;
}
.sp[data-era="zengarden"] .sp-bar {
  text-transform: none; letter-spacing: 0.02em; font-style: italic; font-size: 1.3rem;
  padding: 0.4rem 0.3rem 0.6rem; border-bottom: 1px solid #d8cfb0;
}
.sp[data-era="zengarden"] .sp-year { font-size: 0.9rem; }
.sp[data-era="zengarden"] .sp-stage { background: radial-gradient(circle, #fffaf0 0 52%, transparent 53%); }
.sp[data-era="zengarden"] .sp-note { font-size: 0.95rem; padding: 0 0.3rem; }
.sp[data-era="zengarden"] .sp-badge { margin-left: 0.3rem; color: #8a3b12; font-variant: small-caps; font-size: 0.9rem; letter-spacing: 0.04em; }

/* ---------- 2023 AI chat ---------- */
.sp[data-era="ai"] {
  --sp-bg: #f7f7f8; --sp-ink: #1f2328; --sp-muted: #5f636b; --sp-stroke: #1f2328; --sp-so: 0.5;
  --sp-font: system-ui, -apple-system, sans-serif;
  border: 1px solid #e3e3e6; border-radius: 16px; padding: 1rem 1rem 1.1rem;
}
.sp[data-era="ai"] .sp-bar {
  text-transform: none; letter-spacing: 0; font-size: 0.85rem; font-weight: 600;
  padding-bottom: 0.7rem; border-bottom: 1px solid #e3e3e6;
}
.sp[data-era="ai"] .sp-stage {
  margin: 1rem 2rem 0 0; padding: 1rem; background: #fff;
  border: 1px solid #e6e6ea; border-radius: 18px 18px 18px 4px;
}
.sp[data-era="ai"] .sp-note {
  margin: 0.4rem 2rem 0 0; padding: 0.8rem 1rem; background: #fff;
  border: 1px solid #e6e6ea; border-radius: 4px 18px 18px 18px; font-size: 0.9rem;
}
.sp[data-era="ai"] .sp-badge {
  margin: 0.5rem 0 0 0.5rem; color: #8e9199; font-size: 1.2rem; letter-spacing: 0.15em; line-height: 1;
  animation: sp-pulse 1.2s ease-in-out infinite;
}
@keyframes sp-pulse { 50% { opacity: 0.25; } }

/* ---------- 2000 Table layouts ---------- */
.sp[data-era="tables"] {
  --sp-bg: #fff; --sp-ink: #000; --sp-muted: #fff; --sp-stroke: #003366; --sp-so: 0.6;
  --sp-font: Verdana, Geneva, sans-serif;
  border: 1px solid #999; padding-bottom: 8px;
}
.sp[data-era="tables"] .sp-bar {
  background: #003366; padding: 4px 8px; text-transform: none; letter-spacing: 0;
  font-size: 0.75rem; font-weight: 700;
}
.sp[data-era="tables"] .sp-stage {
  margin: 8px; padding: 12px 0; background: #eef2f7; border: 1px solid #ccc;
  box-shadow: inset 1px 1px 0 #fff;
}
.sp[data-era="tables"] .sp-note { padding: 0 8px; font-size: 0.72rem; line-height: 1.45; }
.sp[data-era="tables"] .sp-badge {
  margin: 8px 8px 0; padding: 1px 6px; color: #666; font-size: 0.65rem; border: 1px dashed #bbb;
}

/* ---------- 2020 Neumorphism ---------- */
.sp[data-era="neumorph"] {
  --sp-bg: #e0e5ec; --sp-ink: #3d4855; --sp-muted: #56657a; --sp-stroke: #6f809a; --sp-so: 0.75;
  --sp-font: system-ui, -apple-system, sans-serif;
  border-radius: 28px; padding: 1.5rem; text-align: center;
}
.sp[data-era="neumorph"] .sp-bar { justify-content: center; text-transform: none; letter-spacing: 0.02em; font-size: 0.9rem; font-weight: 600; }
.sp[data-era="neumorph"] .sp-stage {
  width: fit-content; max-width: 100%; margin: 1.25rem auto; padding: 1.4rem; border-radius: 50%;
  box-shadow: inset 7px 7px 14px #b8c0cc, inset -7px -7px 14px #fff;
}
.sp[data-era="neumorph"] .sp-seal { width: clamp(150px, 44vw, 200px); }
.sp[data-era="neumorph"] .sp-badge {
  margin-top: 1.2rem; padding: 0.65rem 1.6rem; border-radius: 999px; font-weight: 600; font-size: 0.8rem;
  color: #56657a; box-shadow: 6px 6px 12px #b8c0cc, -6px -6px 12px #fff;
}

/* ---------- 2010 Mobile first / responsive ---------- */
.sp[data-era="responsive"] {
  --sp-ink: #1a1a1a; --sp-muted: #c2004f; --sp-stroke: #1a1a1a; --sp-so: 0.6;
  --sp-font: system-ui, -apple-system, sans-serif;
  background: linear-gradient(90deg, rgba(214, 0, 90, 0.07) 0 78%, transparent 78%) 0 0 / calc(100% / 6) 100%, #fff;
  border: 1px solid #e5e5e5; padding: 1.2rem;
}
.sp[data-era="responsive"] .sp-bar { font-family: ui-monospace, Menlo, monospace; text-transform: none; letter-spacing: 0; font-size: 0.8rem; }
.sp[data-era="responsive"] .sp-stage {
  width: fit-content; max-width: 100%; margin: 1.1rem auto; padding: 3.2rem 0.7rem;
  background: #fff; border: 10px solid #1a1a1a; border-radius: 28px;
}
.sp[data-era="responsive"] .sp-seal { width: clamp(130px, 38vw, 170px); }
.sp[data-era="responsive"] .sp-badge {
  padding: 0.2rem 0.5rem; background: #1a1a1a; color: #fff; border-radius: 3px;
  font-family: ui-monospace, Menlo, monospace; font-size: 0.72rem;
}
.sp[data-era="geocities"]:lang(de) .sp-stage::after { content: "Besucher: " attr(data-k); }