/* ================================================================
   Tutori — "the teacher's studio"
   A deep chalkboard scene; warm paper cards float on it; the
   whiteboard is the hero. Every Gradio surface is reskinned.
   ================================================================ */

:root {
  --board-green: #1b2a23;
  --board-green-2: #223830;
  --chalk: #eef3ec;
  --chalk-dim: #b9c8bd;
  --paper: #fdf9ee;
  --paper-2: #f7f1e0;
  --paper-line: #e6dcc4;
  --ink: #2b2a26;
  --ink-soft: #5c574c;
  --t-paper: #fbf8f1;
  --marker-blue: #2563eb;
  --marker-red: #dc2626;
  --marker-green: #16a34a;
  --marker-orange: #ea580c;
  --marker-purple: #7c3aed;
  --honey: #e8b341;
  --hand: "Caveat", "Comic Sans MS", cursive;
  --sans: "Inter", "Segoe UI", system-ui, sans-serif;
  --disp: "Space Grotesk", "Inter", sans-serif;
  --card-shadow: 0 14px 34px rgba(8, 14, 11, .42), 0 3px 9px rgba(8, 14, 11, .3);
}

/* ---------- the scene ---------- */
:root, .gradio-container, body.dark, body {
  --body-background-fill: var(--board-green) !important;
  --background-fill-primary: transparent !important;
  --background-fill-secondary: transparent !important;
  --block-background-fill: transparent !important;
  --block-label-text-color: var(--ink) !important;
  --block-label-background-fill: transparent !important;
  --block-label-border-color: transparent !important;
  --block-title-text-color: var(--ink) !important;
  --body-text-color: var(--ink) !important;
}
html, body,
body > gradio-app, gradio-app,
.gradio-container, .gradio-container .app, .gradio-container > .main {
  background:
    radial-gradient(ellipse 90% 70% at 50% -10%, rgba(255, 255, 255, .07), transparent 60%),
    radial-gradient(ellipse 60% 50% at 88% 100%, rgba(232, 179, 65, .05), transparent 70%),
    linear-gradient(160deg, var(--board-green-2) 0%, var(--board-green) 55%, #16221c 100%) !important;
  background-attachment: fixed !important;
}
.gradio-container {
  font-family: var(--sans) !important;
  width: min(100vw - 48px, 2200px) !important;
  max-width: none !important;
  padding-top: 6px !important;
  padding-bottom: 10px !important;
}
/* faint chalk smudge texture */
.gradio-container::before {
  content: "";
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(circle at 18% 30%, rgba(255,255,255,.045) 0 140px, transparent 280px),
    radial-gradient(circle at 78% 64%, rgba(255,255,255,.035) 0 180px, transparent 340px);
  mix-blend-mode: screen;
}
.gradio-container > .main { position: relative; z-index: 1; }

/* kill default gradio chrome */
footer { visibility: hidden; }
.gradio-container .block, .gradio-container .form,
.gradio-container .panel, .gradio-container .gap {
  background: transparent;
  border: none;
}
.payload-sink,
#tutori-payload {
  position: fixed !important;
  width: 1px !important;
  height: 1px !important;
  left: -1000px !important;
  top: 0 !important;
  opacity: 0 !important;
  pointer-events: none !important;
  overflow: hidden !important;
}

/* ---------- chalk header (compact single row) ---------- */
#tutori-header {
  position: relative;
  padding: 4px 4px 8px;
  color: var(--chalk);
  display: flex; align-items: center; justify-content: flex-start;
  gap: 18px; flex-wrap: nowrap;
  min-height: 68px;
}
#tutori-header .head-left { flex: 0 0 300px; min-width: 260px; }
#tutori-header .logo {
  font-family: var(--hand);
  font-size: 34px; font-weight: 700; line-height: .95;
  display: flex; align-items: baseline; gap: 12px;
  color: var(--chalk) !important;
  text-shadow: 0 0 14px rgba(238, 243, 236, .25);
  transform: rotate(-1.2deg);
}
#tutori-header .logo .mark {
  font-size: 22px;
  filter: drop-shadow(0 0 8px rgba(238, 243, 236, .3));
}
#tutori-header .logo .sub {
  font-family: var(--hand);
  font-size: 16px; font-weight: 500; color: var(--chalk-dim);
}
#tutori-header .squiggle {
  display: block; margin: -1px 0 2px 2px;
  width: 180px; height: 8px;
  stroke: var(--honey); stroke-width: 3; fill: none;
  stroke-linecap: round; opacity: .85;
  stroke-dasharray: 400; stroke-dashoffset: 400;
  animation: chalk-draw 1.1s .25s ease forwards;
}
@keyframes chalk-draw { to { stroke-dashoffset: 0; } }
#tutori-header .tag {
  font-size: 12px; color: var(--chalk-dim); font-weight: 400;
  letter-spacing: .15px;
  max-width: 300px;
}

/* badges = stickers slapped on the board */
#tutori-header .badges {
  display: flex; gap: 6px 7px; flex-wrap: wrap;
  justify-content: flex-start;
  min-width: 0;
  max-width: min(980px, calc(100vw - 620px));
  overflow: visible;
  /* keep clear of the HF mini-header pill pinned top-right */
  margin-right: clamp(180px, 17vw, 310px);
  max-height: 52px;
}
@media (max-width: 1380px) { #tutori-header .badges { margin-right: 0; max-width: calc(100vw - 390px); } }
@media (max-width: 1080px) {
  #tutori-header { flex-wrap: nowrap; min-height: 64px; }
  #tutori-header .head-left { flex: 1 1 auto; }
  #tutori-header .badges { display: none; }
}
#tutori-header .badge {
  flex: 0 0 auto;
  font-size: 10.8px; font-weight: 600; letter-spacing: .15px;
  padding: 4px 10px; border-radius: 4px 9px 6px 8px;
  background: var(--paper); color: var(--ink);
  border: 1.5px solid #d9cfb5;
  box-shadow: 2px 3px 0 rgba(8, 14, 11, .45);
  transform: rotate(-.8deg);
}
#tutori-header .badge:nth-child(2n) { transform: rotate(.9deg); border-radius: 9px 5px 11px 6px; }
#tutori-header .badge:nth-child(3n) { transform: rotate(-.3deg); }
#tutori-header .badge.hot {
  background: linear-gradient(135deg, #ffe9b3, #ffd56b);
  border-color: #e3b94d;
}

/* ---------- the whiteboard: hero ---------- */
.board-col {
  flex: 1 1 calc(100% - 500px) !important;
  min-width: min(100%, 720px) !important;
  transition: flex-basis .75s cubic-bezier(.6, .05, .25, 1),
              flex-grow .75s cubic-bezier(.6, .05, .25, 1);
}
.side-col {
  flex: 0 0 clamp(350px, 27vw, 470px) !important;
  max-width: 470px !important;
}
.board-big .board-col,
body.board-big .board-col {
  flex: 1 1 calc(100% - 420px) !important;
  flex-grow: 34 !important;
}
.board-big .side-col,
body.board-big .side-col {
  flex: 0 0 clamp(320px, 22vw, 400px) !important;
  max-width: 400px !important;
}
.board-big .side-col .chip-row,
.board-big .side-col #mic-box,
body.board-big .side-col .chip-row,
body.board-big .side-col #mic-box { opacity: .35; transition: opacity .5s ease; }

@media (min-width: 1181px) {
  .studio-row {
    align-items: flex-start !important;
  }
  .studio-row .board-col,
  .studio-row .side-col {
    min-height: 0 !important;
  }
  .studio-row .side-col {
    max-height: calc(100dvh - 150px) !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    padding-right: 4px !important;
    scrollbar-width: thin;
  }
}

.board-shell {
  border-radius: 12px;
  background: var(--t-paper);
  border: 7px solid #fffdf7;
  outline: 1.5px solid #d8cdb2;
  box-shadow:
    var(--card-shadow),
    inset 0 0 0 1px #eee6d2;
  overflow: hidden;
  position: relative;
}
.board-toolbar {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 12px;
  background: linear-gradient(#fbf6e8, #f4edda);
  border-bottom: 1.5px solid #e3d9bf;
}
.tb-group { display: flex; align-items: center; gap: 7px; }
.tb-spacer { flex: 1; }
/* swatches = marker caps */
.tb-swatch {
  width: 20px; height: 24px; border-radius: 7px 7px 4px 4px;
  background: var(--c);
  border: 1.5px solid rgba(0, 0, 0, .18);
  border-bottom-width: 4px;
  cursor: pointer; transition: transform .14s ease, box-shadow .14s ease;
  padding: 0;
}
.tb-swatch:hover { transform: translateY(-3px); }
.tb-swatch.active {
  transform: translateY(-4px);
  box-shadow: 0 5px 8px rgba(43, 42, 38, .3), 0 0 0 2px #fff, 0 0 0 3.5px var(--c);
}
.tb-btn {
  font-size: 12px; font-weight: 600; color: var(--ink-soft);
  background: #fff; border: 1.5px solid #ddd2b6; border-radius: 8px;
  padding: 3px 9px; cursor: pointer; transition: all .12s ease;
  box-shadow: 1.5px 2px 0 rgba(43, 42, 38, .12);
}
.tb-btn:hover { background: #fef3c7; border-color: #e3b94d; transform: translate(-1px, -1px); box-shadow: 2.5px 3px 0 rgba(43, 42, 38, .16); }
.tb-btn.active { background: #ede9fe; border-color: var(--marker-purple); color: var(--marker-purple); }
.tb-talk { display: flex; align-items: center; gap: 7px; font-size: 12px; font-weight: 600; color: var(--ink-soft); }
.talk-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: #d6d3d1; transition: background .2s;
}
.talk-dot.on { background: #22c55e; animation: t-pulse 1.1s ease-in-out infinite; }
@keyframes t-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, .5); }
  50% { box-shadow: 0 0 0 7px rgba(34, 197, 94, 0); }
}

.board-wrap {
  position: relative; width: 100%;
  height: clamp(360px, min(54vw, calc(100vh - 350px)), 680px);
  min-height: 0;
  background:
    radial-gradient(circle, #d8d0bd 1px, transparent 1.1px) 0 0 / 26px 26px,
    #fbf8f1;
  touch-action: none;
}
.board-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
#cv-user { cursor: crosshair; }

.board-status {
  position: absolute; top: 12px; right: 12px;
  max-width: 65%;
  font-size: 12.5px; font-weight: 600;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(27, 42, 35, .92); color: var(--chalk);
  opacity: 0; transform: translateY(-6px);
  transition: all .25s ease;
  pointer-events: none;
  backdrop-filter: blur(4px);
}
.board-status.show { opacity: 1; transform: translateY(0); }
.board-status[data-mode="searching"] { background: rgba(124, 58, 237, .92); }
.board-status[data-mode="teaching"] { background: rgba(22, 101, 52, .92); }
.board-status[data-mode="error"] { background: rgba(220, 38, 38, .92); }

/* subtitle strip below the canvas */
.board-caption {
  position: absolute;
  left: 10px; right: 10px; bottom: 10px;
  min-height: 0;
  display: flex; align-items: center; justify-content: center;
  margin: 0; padding: 7px 18px;
  font-family: var(--sans);
  font-size: 13.5px; font-weight: 500; line-height: 1.35;
  text-align: center;
  background: rgba(32, 40, 31, .94); color: #f4f6f0;
  border: 1px solid rgba(255, 253, 247, .28);
  border-radius: 10px;
  box-shadow: 0 8px 22px rgba(8, 14, 11, .28);
  opacity: 0; transform: translateY(6px);
  transition: opacity .3s ease, transform .3s ease;
  pointer-events: none;
}
.board-caption.show { opacity: 1; transform: translateY(0); }

/* board action row: visible in the first viewport */
.board-actions {
  gap: 14px !important;
  margin-top: 7px !important;
  align-items: stretch !important;
}
.board-actions button {
  min-height: 38px !important;
}

/* board action buttons: marker-drawn */
#ask-board-btn {
  font-family: var(--disp) !important;
  background: linear-gradient(135deg, #f6a623, #e8741a) !important;
  color: #fff !important; font-weight: 700 !important;
  border: 2px solid #b65a10 !important; border-radius: 12px !important;
  box-shadow: 3px 4px 0 rgba(8, 14, 11, .5) !important;
  transition: transform .12s ease, box-shadow .12s ease !important;
}
#ask-board-btn:hover { transform: translate(-1px, -2px); box-shadow: 4px 6px 0 rgba(8, 14, 11, .5) !important; }
#new-btn {
  font-family: var(--disp) !important;
  background: var(--paper) !important; color: var(--ink) !important;
  font-weight: 700 !important;
  border: 2px solid #c9bfa4 !important; border-radius: 12px !important;
  box-shadow: 3px 4px 0 rgba(8, 14, 11, .4) !important;
  transition: transform .12s ease, box-shadow .12s ease !important;
}
#new-btn:hover { transform: translate(-1px, -2px); box-shadow: 4px 6px 0 rgba(8, 14, 11, .45) !important; }

/* ---------- right column: paper cards ---------- */
.side-col > * { position: relative; }

/* transcript = lined paper */
#tutori-chat {
  border-radius: 6px 14px 8px 13px !important;
  background:
    linear-gradient(90deg, transparent 0 30px, rgba(220, 38, 38, .22) 30px 31.5px, transparent 31.5px),
    repeating-linear-gradient(transparent 0 27px, #dfe5f0 27px 28px),
    var(--paper) !important;
  border: 1.5px solid #ddd2b6 !important;
  box-shadow: var(--card-shadow) !important;
}
#tutori-chat .message-wrap, #tutori-chat .bubble-wrap,
#tutori-chat .message-row { background: transparent !important; }
#tutori-chat .message {
  font-size: 14px; line-height: 1.55;
  background: transparent !important;
  border: none !important;
  color: var(--ink) !important;
  box-shadow: none !important;
}
#tutori-chat label span,
#tutori-chat .label span {
  font-family: var(--hand) !important; font-size: 19px !important;
  color: var(--ink) !important;
}

/* mic + input */
#mic-box {
  background: var(--paper) !important;
  border: 1.5px solid #ddd2b6 !important;
  border-radius: 13px 7px 12px 8px !important;
  box-shadow: var(--card-shadow) !important;
}
#mic-box .wrap, #mic-box .controls { min-height: 0 !important; }
#mic-box label span { font-family: var(--hand) !important; font-size: 18px !important; color: var(--ink) !important; }
#mic-box .record-button, #mic-box button { border-radius: 12px !important; }

.side-col textarea, .side-col input[type="text"] {
  background: var(--paper) !important;
  border: 2px solid #c9bfa4 !important;
  border-radius: 12px !important;
  color: var(--ink) !important;
  font-size: 14.5px !important;
  box-shadow: inset 1.5px 2px 0 rgba(43, 42, 38, .07) !important;
}
.side-col textarea::placeholder { color: #a39a85 !important; }
#send-btn {
  font-family: var(--disp) !important;
  background: linear-gradient(135deg, #3b82f6, #2456c9) !important;
  color: #fff !important; font-weight: 700 !important;
  border: 2px solid #1c3f96 !important; border-radius: 12px !important;
  box-shadow: 3px 4px 0 rgba(8, 14, 11, .5) !important;
  transition: transform .12s ease, box-shadow .12s ease !important;
}
#send-btn:hover { transform: translate(-1px, -2px); box-shadow: 4px 6px 0 rgba(8, 14, 11, .5) !important; }

/* chips = sticky notes from the study coach */
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; padding: 3px 2px 6px; }
.chip-row button {
  font-size: 12px !important; font-weight: 600 !important;
  font-family: var(--sans) !important;
  color: var(--ink) !important;
  border: none !important;
  border-radius: 2px 2px 8px 2px !important;
  padding: 8px 10px 9px !important;
  min-width: 0 !important;
  box-shadow: 2px 4px 7px rgba(8, 14, 11, .38) !important;
  transition: transform .15s ease, box-shadow .15s ease !important;
  line-height: 1.3 !important;
}
.chip-row button:nth-child(1) { background: #fff3a8 !important; transform: rotate(-1.4deg); }
.chip-row button:nth-child(2) { background: #ffd9e8 !important; transform: rotate(.9deg); }
.chip-row button:nth-child(3) { background: #d3edff !important; transform: rotate(-.7deg); }
.chip-row button:nth-child(4) { background: #d9f7d4 !important; transform: rotate(1.2deg); }
.chip-row button:hover { transform: translateY(-3px) rotate(0deg) !important; box-shadow: 3px 7px 12px rgba(8, 14, 11, .42) !important; }
.chip-row button.chip-pop { animation: chip-pop .55s ease; }
@keyframes chip-pop {
  0% { transform: scale(.6) rotate(-4deg); opacity: 0; }
  70% { transform: scale(1.08) rotate(1deg); opacity: 1; }
  100% { transform: scale(1); }
}

/* component labels — handwritten tabs instead of gradio chips */
.side-col label[data-testid="block-label"],
.board-col label[data-testid="block-label"] {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}
.side-col label[data-testid="block-label"] span,
.side-col label[data-testid="block-label"] svg {
  font-family: var(--hand) !important;
  font-size: 20px !important; font-weight: 600 !important;
  color: var(--ink) !important;
}

/* folder titles are readable even before board.js tags the block */
.side-col button.label-wrap {
  background: var(--paper-2) !important;
  border: 1.5px solid #ddd2b6 !important;
  border-radius: 10px !important;
  padding: 7px 14px !important;
  box-shadow: 0 5px 12px rgba(8, 14, 11, .3) !important;
}
.side-col .paper-folder button.label-wrap {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 2px 0 !important;
}

/* accordions = paper folders (tagged by board.js) */
.side-col .paper-folder {
  background: var(--paper-2) !important;
  border: 1.5px solid #ddd2b6 !important;
  border-radius: 11px !important;
  box-shadow: 0 8px 18px rgba(8, 14, 11, .32) !important;
  padding: 8px 16px !important;
}
.side-col button.label-wrap span {
  font-family: var(--hand) !important; font-size: 20px !important;
  font-weight: 600 !important;
  color: var(--ink) !important;
}
.side-col .paper-folder label,
.side-col .paper-folder .info,
.side-col .paper-folder .prose,
.side-col .paper-folder p,
.side-col .paper-folder span {
  color: var(--ink-soft);
}
.side-col .paper-folder input[type="number"] {
  background: var(--paper) !important; color: var(--ink) !important;
  border: 1px solid #c9bfa4 !important; border-radius: 8px !important;
}
.side-col .json-holder, .side-col .json-holder * {
  background: var(--paper) !important;
  color: var(--ink) !important;
}
.side-col input[type="checkbox"] { accent-color: var(--marker-orange); }
.side-col input[type="range"] { accent-color: var(--marker-blue); }

#mode-banner {
  border-radius: 12px; padding: 8px 14px; font-size: 13px;
  background: #fef9c3; border: 1.5px solid #e3b94d; color: #854d0e;
  margin-top: 8px;
  box-shadow: 2px 3px 0 rgba(8, 14, 11, .35);
}

/* dark-browser-proof: paper surfaces always carry ink text */
#mic-box, #mic-box *:not(button[id]),
.side-col .form *, .side-col textarea,
.paper-folder, .paper-folder *,
#tutori-chat .message, #tutori-chat .message * {
  color: var(--ink) !important;
}
#mic-box svg, .paper-folder svg { fill: var(--ink); stroke: var(--ink); }
.dark .side-col textarea, .dark .side-col input[type="text"] {
  background: var(--paper) !important;
  color: var(--ink) !important;
}

/* transcript: content stays clear of the floating label */
#tutori-chat label[data-testid="block-label"].float,
#tutori-chat label[data-testid="block-label"] {
  background: var(--paper) !important;
  border-radius: 8px !important;
  padding: 2px 10px !important;
  box-shadow: 0 2px 6px rgba(8, 14, 11, .18) !important;
}
#tutori-chat .wrapper, #tutori-chat .wrap { padding-top: 34px !important; }

/* ---------- footer ---------- */
#tutori-foot {
  text-align: center; color: var(--chalk-dim);
  padding: 10px 0 4px;
  font-family: var(--hand); font-size: 16px;
}
#tutori-foot a { color: var(--honey); }
#made-by {
  margin-top: 4px; font-size: 10.5px; letter-spacing: .8px;
  color: rgba(238, 243, 236, .4); text-transform: uppercase;
  font-weight: 600; font-family: var(--sans);
}


/* ---------- responsive ---------- */
@media (max-width: 1180px) {
  .board-col, .side-col {
    flex-basis: 100% !important;
    min-width: 100% !important;
    max-width: none !important;
    flex-grow: 1 !important;
  }
  .board-big .board-col,
  body.board-big .board-col { flex-grow: 1 !important; }
  .board-big .side-col .chip-row,
  .board-big .side-col #mic-box,
  body.board-big .side-col .chip-row,
  body.board-big .side-col #mic-box { opacity: 1; }
  .board-wrap { height: clamp(320px, calc(100vh - 348px), 560px); }
}
@media (max-width: 800px) {
  #tutori-header { padding: 8px 6px 8px; }
  #tutori-header .badges { justify-content: flex-start; }
  #tutori-header .logo { font-size: 32px; }
  #tutori-header .logo .sub { font-size: 16px; }
  #tutori-header .squiggle { width: 170px; }
  #tutori-header .tag { font-size: 12.5px; }
  .gradio-container { padding-left: 8px !important; padding-right: 8px !important; }
  .board-wrap { height: clamp(300px, calc(100vh - 330px), 480px); }
}