/* ========================================================================
   PALIMPSEST — shared tokens + base styles
   Workshop terminal × archive register × scientific lab
   ======================================================================== */

:root {
  /* PAPER (old, warm) */
  --paper:        #f1e7d0;
  --paper-2:      #e7d8b3;
  --paper-deep:   #d8c48d;
  --ink:          #1a1812;
  --ink-soft:     #5b4f3a;
  --ink-faint:    #9b8e6f;
  --rule:         #b34a3a;
  --ochre:        #c98b3a;
  --ochre-deep:   #8a5a1f;

  /* TERMINAL (new, cool) */
  --term-bg:      #0e1530;
  --term-bg-2:    #161e3f;
  --term-line:    #2a3460;
  --term-text:    #e3e7f5;
  --term-dim:     #8895c2;
  --ai:           #5c7bff;
  --ai-deep:      #2b3e9e;
  --ai-glow:      #8aa6ff;
  --cyan:         #6fc3e3;
  --green:        #6fcf97;
  --warn:         #e58060;

  /* Type */
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, monospace;
  --serif: "Spectral", "Source Serif Pro", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Easings */
  --ease-out: cubic-bezier(.22,.61,.36,1);
}

/* Parchment mode = re-skin (warmer accent in place of cold blue) */
[data-theme="parchment"] {
  --ai:           #b96b1f;
  --ai-deep:      #6e3d0e;
  --ai-glow:      #e1a253;
  --cyan:         #d0a86f;
  --term-bg:      #1c1409;
  --term-bg-2:    #2a1f12;
  --term-line:    #4a3a23;
  --term-text:    #f1e7d0;
  --term-dim:     #b9a47a;
  --green:        #c2c067;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  background: var(--ink);
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }

/* ========================================================================
   TEXTURES
   ======================================================================== */
.bg-paper {
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse 800px 600px at 18% 12%, rgba(255,250,235,0.55), transparent 60%),
    radial-gradient(ellipse 700px 500px at 92% 88%, rgba(170,130,70,0.10), transparent 60%),
    repeating-linear-gradient(0deg,
      rgba(120, 90, 40, 0.022) 0 1px,
      transparent 1px 3px),
    repeating-linear-gradient(90deg,
      rgba(120, 90, 40, 0.018) 0 1px,
      transparent 1px 4px);
}

.bg-paper-2 {
  background-color: var(--paper-2);
  background-image:
    repeating-linear-gradient(0deg,
      rgba(120, 90, 40, 0.04) 0 1px,
      transparent 1px 3px);
}

.bg-term {
  background-color: var(--term-bg);
  background-image:
    radial-gradient(ellipse 800px 600px at 20% 0%, rgba(92,123,255,0.10), transparent 70%),
    repeating-linear-gradient(0deg,
      rgba(255,255,255,0.025) 0 1px,
      transparent 1px 3px);
}

.bg-term-recessed {
  background-color: #06091c;
  background-image:
    repeating-linear-gradient(0deg,
      rgba(255,255,255,0.02) 0 1px,
      transparent 1px 3px);
  box-shadow:
    inset 0 1px 0 rgba(0,0,0,0.6),
    inset 0 0 0 1px var(--term-line),
    inset 0 12px 28px -16px rgba(0,0,0,0.7);
}

/* ledger paper — same as paper but with horizontal rule lines + red margin */
.bg-ledger {
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse 1200px 800px at 20% 0%, rgba(255,250,235,0.55), transparent 60%),
    repeating-linear-gradient(0deg,
      transparent 0 27px,
      rgba(91,79,58,0.18) 27px 28px),
    repeating-linear-gradient(0deg,
      rgba(120, 90, 40, 0.022) 0 1px,
      transparent 1px 3px);
}

/* ========================================================================
   PAPER CARD
   ======================================================================== */
.paper-card {
  position: relative;
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse 400px 280px at 22% 18%, rgba(255,250,235,0.65), transparent 60%),
    radial-gradient(ellipse 320px 220px at 88% 92%, rgba(170,130,70,0.10), transparent 70%),
    repeating-linear-gradient(0deg,
      rgba(120, 90, 40, 0.022) 0 1px,
      transparent 1px 3px);
  border: 1px solid rgba(120,90,40,0.18);
  box-shadow:
    0 1px 0 rgba(120,90,40,0.30),
    2px 3px 0 rgba(120,90,40,0.08),
    0 14px 28px -16px rgba(60,40,10,0.45),
    0 22px 38px -28px rgba(60,40,10,0.35);
  color: var(--ink);
  border-radius: 3px;
}

/* ========================================================================
   TERMINAL PANEL
   ======================================================================== */
.term-panel {
  position: relative;
  background-color: var(--term-bg-2);
  background-image:
    repeating-linear-gradient(0deg,
      rgba(255,255,255,0.025) 0 1px,
      transparent 1px 3px);
  border: 1px solid var(--term-line);
  box-shadow:
    inset 0 0 30px -4px rgba(122,160,255,0.18),
    0 28px 50px -30px rgba(8,12,30,0.65);
  color: var(--term-text);
  border-radius: 3px;
}

.term-panel-active {
  box-shadow:
    inset 0 0 30px -4px rgba(122,160,255,0.32),
    0 0 0 1px rgba(122,160,255,0.18),
    0 28px 50px -30px rgba(8,12,30,0.65);
}

/* ========================================================================
   BUTTONS — physical, 1.6px ink border, 2px offset shadow
   ======================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 10px 16px;
  border-radius: 3px;
  border: 1.6px solid var(--ink);
  transition: transform 80ms var(--ease-out), box-shadow 120ms var(--ease-out), background 120ms;
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  user-select: none;
}
.btn:focus-visible {
  outline: 2px solid var(--ai);
  outline-offset: 2px;
}
.btn-paper {
  background: var(--paper);
  color: var(--ink);
  box-shadow: 2px 2px 0 var(--ink), 4px 6px 14px -6px rgba(60,40,10,0.45);
}
.btn-paper:hover { background: #fbf2da; }
.btn-paper:active { transform: translate(1px,1px); box-shadow: 1px 1px 0 var(--ink); }

.btn-primary {
  background: var(--ink);
  color: var(--paper);
  box-shadow: 2px 2px 0 var(--ochre-deep), 4px 6px 14px -6px rgba(0,0,0,0.4);
}
.btn-primary:hover { background: #2a261a; }
.btn-primary:active { transform: translate(1px,1px); box-shadow: 1px 1px 0 var(--ochre-deep); }

.btn-ai {
  background: linear-gradient(180deg, var(--ai) 0%, var(--ai-deep) 100%);
  color: white;
  border-color: var(--ai-deep);
  box-shadow:
    2px 2px 0 var(--ai-deep),
    0 0 0 1px rgba(138,166,255,0.4) inset,
    0 8px 22px -8px rgba(92,123,255,0.6);
  text-shadow: 0 1px 0 rgba(0,0,0,0.25);
}
.btn-ai:hover { filter: brightness(1.08); }
.btn-ai:active { transform: translate(1px,1px); box-shadow: 1px 1px 0 var(--ai-deep), 0 0 0 1px rgba(138,166,255,0.4) inset; }

.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1.6px solid rgba(91,79,58,0.35);
  box-shadow: none;
}
.btn-ghost:hover { background: rgba(120,90,40,0.06); color: var(--ink); border-color: var(--ink-soft); }

.btn-term {
  background: var(--term-bg-2);
  color: var(--term-text);
  border-color: var(--term-line);
  box-shadow: 2px 2px 0 #050715, 0 0 0 1px rgba(122,160,255,0.10) inset;
}
.btn-term:hover { background: #1c2552; border-color: var(--ai); color: var(--ai-glow); }
.btn-term:active { transform: translate(1px,1px); box-shadow: 1px 1px 0 #050715; }

.btn-ghost-term {
  background: transparent;
  color: var(--term-dim);
  border: 1.6px solid var(--term-line);
  box-shadow: none;
}
.btn-ghost-term:hover { color: var(--term-text); border-color: var(--ai); }

.btn-ghost-warn {
  background: transparent;
  color: var(--warn);
  border: 1.6px solid rgba(229,128,96,0.45);
  box-shadow: none;
}
.btn-ghost-warn:hover { background: rgba(229,128,96,0.08); border-color: var(--warn); }

.btn-lg {
  padding: 14px 22px;
  font-size: 14px;
}
.btn-sm {
  padding: 6px 12px;
  font-size: 11px;
}
.btn-block { width: 100%; }

.btn:focus-visible.on-term {
  outline: 2px solid var(--ai-glow);
  outline-offset: 2px;
}

/* ========================================================================
   CHIPS
   ======================================================================== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 4px 9px 4px 9px;
  border-radius: 999px;
  border: 1px solid;
  white-space: nowrap;
  line-height: 1;
}
.chip-ok    { background: rgba(111,207,151,0.10); color: #2d7a4c; border-color: rgba(111,207,151,0.45); }
.chip-warn  { background: rgba(229,128,96,0.10); color: #a4421f; border-color: rgba(229,128,96,0.55); }
.chip-info  { background: rgba(92,123,255,0.10); color: #2b3e9e; border-color: rgba(92,123,255,0.40); }
.chip-mute  { background: rgba(91,79,58,0.06); color: var(--ink-soft); border-color: rgba(91,79,58,0.30); }
.chip-term  { background: rgba(122,160,255,0.10); color: var(--ai-glow); border-color: rgba(122,160,255,0.30); }
.chip-term-ok   { background: rgba(111,207,151,0.10); color: var(--green); border-color: rgba(111,207,151,0.35); }
.chip-term-warn { background: rgba(229,128,96,0.10); color: var(--warn); border-color: rgba(229,128,96,0.40); }

.chip .dot {
  width: 6px; height: 6px; border-radius: 999px; background: currentColor; display: inline-block;
}
.chip .dot-pulse { animation: chip-pulse 1.4s ease-in-out infinite; }

@keyframes chip-pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.2); }
}

/* ========================================================================
   STAMP
   ======================================================================== */
.stamp {
  display: inline-block;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rule);
  border: 2px solid var(--rule);
  padding: 6px 14px;
  transform: rotate(-3deg);
  position: relative;
  border-radius: 1px;
  opacity: 0.85;
}
.stamp::before, .stamp::after {
  content: '';
  position: absolute;
  width: 3px; height: 3px; background: var(--rule); top: 50%; transform: translateY(-50%); border-radius: 999px;
}
.stamp::before { left: -8px; }
.stamp::after  { right: -8px; }

/* ========================================================================
   WAX SEAL
   ======================================================================== */
.wax-seal {
  width: 38px; height: 38px;
  border-radius: 999px;
  background:
    radial-gradient(circle at 35% 30%, #e6a85a 0%, var(--ochre) 35%, var(--ochre-deep) 80%, #5a380e 100%);
  display: inline-flex; align-items: center; justify-content: center;
  color: rgba(0,0,0,0.55);
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  font-weight: 700;
  transform: rotate(-6deg);
  box-shadow:
    inset 0 1px 0 rgba(255,220,160,0.5),
    inset 0 -3px 6px rgba(60,30,5,0.5),
    2px 3px 6px rgba(60,30,5,0.35);
  position: relative;
  flex: none;
  transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out);
}
.wax-seal:hover {
  transform: rotate(-10deg);
  box-shadow:
    inset 0 1px 0 rgba(255,220,160,0.5),
    inset 0 -3px 6px rgba(60,30,5,0.5),
    3px 5px 10px rgba(60,30,5,0.4);
}
.wax-seal-sm { width: 26px; height: 26px; font-size: 12px; }
.wax-seal-lg { width: 52px; height: 52px; font-size: 22px; }

/* ========================================================================
   RIBBON TAG — angled banner at top edge of a paper card
   ======================================================================== */
.ribbon {
  position: absolute;
  top: -10px; left: 18px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--ink);
  color: var(--paper);
  padding: 5px 18px 5px 10px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 50%, 100% 100%, 0 100%);
  box-shadow: 0 4px 8px -4px rgba(0,0,0,0.4);
}
.ribbon-ochre { background: var(--ochre-deep); }
.ribbon-rule  { background: var(--rule); }

/* Folder tab — rectangular labeled tab pinned out of top edge */
.folder-tab {
  position: absolute;
  top: -16px; left: 24px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--paper-deep);
  color: var(--ink);
  padding: 5px 14px;
  border-radius: 4px 4px 0 0;
  border: 1px solid rgba(120,90,40,0.25);
  border-bottom: 0;
  box-shadow: 0 -2px 6px -2px rgba(60,40,10,0.2);
}

/* Folded corner triangle */
.fold-corner {
  position: absolute;
  top: 0; right: 0;
  width: 28px; height: 28px;
  background: linear-gradient(135deg, transparent 50%, var(--paper-deep) 50%, var(--paper-2) 100%);
  border-left: 1px solid rgba(120,90,40,0.2);
  border-bottom: 1px solid rgba(120,90,40,0.2);
  box-shadow: -2px 2px 4px -1px rgba(60,40,10,0.18);
}

/* ========================================================================
   PROGRESS BAR
   ======================================================================== */
.progress {
  position: relative;
  height: 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--term-line);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 400ms var(--ease-out);
  position: relative;
}
.progress-fill-ai {
  background:
    linear-gradient(90deg, var(--ai-deep), var(--ai-glow));
  box-shadow: 0 0 14px rgba(122,160,255,0.55), inset 0 1px 0 rgba(255,255,255,0.25);
}
.progress-fill-ai::after {
  content: '';
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(255,255,255,0.10) 0 8px,
    transparent 8px 16px
  );
  animation: stripes 1s linear infinite;
}
@keyframes stripes {
  from { background-position: 0 0; }
  to { background-position: 16px 0; }
}
.progress-fill-green {
  background: linear-gradient(90deg, #2d7a4c, var(--green));
  box-shadow: 0 0 12px rgba(111,207,151,0.4), inset 0 1px 0 rgba(255,255,255,0.2);
}
.progress-fill-warn {
  background: linear-gradient(90deg, #6b2a14, var(--warn));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15);
}

.progress-lg { height: 16px; }

/* ========================================================================
   STAGE CHIP
   ======================================================================== */
.stage-chip {
  position: relative;
  padding: 14px 14px 12px;
  border: 1px solid var(--term-line);
  border-radius: 3px;
  background: rgba(255,255,255,0.012);
  transition: border-color 250ms var(--ease-out), box-shadow 250ms var(--ease-out), background 250ms;
}
.stage-chip-active {
  border-color: var(--ai);
  background: rgba(92,123,255,0.06);
  box-shadow: inset 0 0 20px -4px rgba(122,160,255,0.30), 0 0 0 1px rgba(92,123,255,0.20);
}
.stage-chip-done {
  border-color: rgba(111,207,151,0.5);
  background: rgba(111,207,151,0.04);
}
.stage-chip-failed {
  border-color: var(--warn);
  background: rgba(229,128,96,0.05);
}
.stage-chip .stage-name {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--term-text);
}
.stage-chip-pending .stage-name { color: var(--term-dim); }
.stage-chip .stage-status {
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--term-dim);
}
.stage-chip-active .stage-status { color: var(--ai-glow); }
.stage-chip-done .stage-status   { color: var(--green); }
.stage-chip-failed .stage-status { color: var(--warn); }

/* ========================================================================
   DROPZONE
   ======================================================================== */
.dropzone {
  position: relative;
  border: 1.6px dashed rgba(91,79,58,0.45);
  border-radius: 4px;
  padding: 38px 24px;
  text-align: center;
  background:
    repeating-linear-gradient(0deg,
      rgba(91,79,58,0.06) 0 1px,
      transparent 1px 6px);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 200ms, background-color 200ms;
}
.dropzone-hot {
  border-color: var(--ai);
  background-color: rgba(92,123,255,0.06);
}
.dropzone::after {
  content: '';
  position: absolute;
  left: 0; right: 0; top: -40%;
  height: 60%;
  background: linear-gradient(180deg, transparent 0%, rgba(111,195,227,0.18) 50%, transparent 100%);
  pointer-events: none;
  animation: sweep 2.4s linear infinite;
  mix-blend-mode: multiply;
  opacity: 0;
  transition: opacity 200ms;
}
.dropzone-hot::after { opacity: 1; }
.dropzone-empty:hover::after { opacity: 0.6; }
@keyframes sweep {
  0% { transform: translateY(0); }
  100% { transform: translateY(220%); }
}

.dropzone-flash {
  animation: drop-flash 250ms ease-out;
}
@keyframes drop-flash {
  0% { background-color: rgba(92,123,255,0.30); }
  100% { background-color: transparent; }
}

/* ========================================================================
   LOG STREAM
   ======================================================================== */
.log-line {
  display: grid;
  grid-template-columns: 60px 22px 100px 1fr;
  gap: 8px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 20px;
  white-space: nowrap;
  overflow: hidden;
  animation: log-in 180ms var(--ease-out);
}
@keyframes log-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.log-time   { color: var(--term-dim); }
.log-glyph  { text-align: center; }
.log-stage  { color: var(--term-text); }
.log-msg    { color: var(--term-dim); white-space: normal; }
.log-ok     .log-glyph, .log-ok    .log-stage  { color: var(--green); }
.log-act    .log-glyph, .log-act   .log-stage  { color: var(--ai-glow); }
.log-act    .log-msg                            { color: var(--ai-glow); }
.log-err    .log-glyph, .log-err   .log-stage, .log-err .log-msg { color: var(--warn); }
.log-pulse .log-glyph { animation: chip-pulse 1.2s ease-in-out infinite; }

.caret {
  display: inline-block;
  width: 8px; height: 14px;
  background: var(--green);
  vertical-align: text-bottom;
  animation: caret-blink 1s steps(1, end) infinite;
  margin-left: 4px;
}
@keyframes caret-blink {
  50% { opacity: 0; }
}
.caret-ai { background: var(--ai-glow); }

/* ========================================================================
   LEDGER ROW
   ======================================================================== */
.ledger-row {
  display: grid;
  grid-template-columns: 88px 1fr auto;
  gap: 24px;
  align-items: start;
  padding: 18px 0 16px;
  border-bottom: 1px solid rgba(91,79,58,0.25);
  position: relative;
  transition: background 200ms;
}
.ledger-row:hover {
  background: rgba(216,196,141,0.20);
}
.ledger-row .ledger-actions {
  opacity: 0.5;
  transition: opacity 180ms;
}
.ledger-row:hover .ledger-actions {
  opacity: 1;
}
.ledger-row .ledger-date {
  text-align: right;
  padding-right: 4px;
}
.ledger-row.is-active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 100%;
  background: linear-gradient(180deg, transparent, rgba(92,123,255,0.10), transparent);
  background-size: 100% 60%;
  background-repeat: no-repeat;
  pointer-events: none;
  animation: row-sweep 2.4s linear infinite;
}
@keyframes row-sweep {
  0% { background-position: 0 -60%; }
  100% { background-position: 0 160%; }
}

/* ========================================================================
   PLACEHOLDER (scanned page / rendered output mockups)
   ======================================================================== */
.scan-placeholder {
  background:
    repeating-linear-gradient(0deg,
      rgba(91,79,58,0.18) 0 1px,
      transparent 1px 5px),
    var(--paper-2);
  border: 1.5px dashed rgba(91,79,58,0.35);
  position: relative;
  border-radius: 2px;
}
.scan-placeholder::before {
  content: attr(data-label);
  position: absolute;
  top: 8px; left: 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  background: var(--paper);
  padding: 2px 6px;
  border-radius: 2px;
}

/* ========================================================================
   FOCUS RINGS
   ======================================================================== */
*:focus-visible {
  outline: 2px solid var(--ai);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ========================================================================
   UTILITIES
   ======================================================================== */
.mono { font-family: var(--mono); }
.serif { font-family: var(--serif); }
.sans { font-family: var(--sans); }

.caps { text-transform: uppercase; letter-spacing: 0.10em; }

.text-ink-faint  { color: var(--ink-faint); }
.text-ink-soft   { color: var(--ink-soft); }
.text-term-dim   { color: var(--term-dim); }
.text-rule       { color: var(--rule); }
.text-green      { color: var(--green); }
.text-warn       { color: var(--warn); }
.text-ai         { color: var(--ai-glow); }

.divider-paper {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(91,79,58,0.4), transparent);
}

/* hairline rule */
.hr-ink { border: 0; border-top: 1px solid rgba(91,79,58,0.4); margin: 16px 0; }

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}