@import url('https://fonts.googleapis.com/css2?family=Caprasimo:wght@400&family=Figtree:wght@400;600;700&display=swap');

:root {
  --color-bg: #f5ead8;
  --color-surface: #ebddc5;
  --color-text: #201e1d;
  --color-accent: #c67139;
  --color-accent-2: #7a8a5e;
  --color-divider: color-mix(in srgb, #201e1d 16%, transparent);

  --color-neutral-100: #f9f4ed;
  --color-neutral-200: #eee7db;
  --color-neutral-300: #dcd3c4;
  --color-neutral-400: #c0b6a5;
  --color-neutral-500: #a19786;
  --color-neutral-600: #82796a;
  --color-neutral-700: #645c50;
  --color-neutral-800: #474238;
  --color-neutral-900: #2e2b25;

  --color-accent-100: #fff2eb;
  --color-accent-600: #b2622d;
  --color-accent-700: #8c491a;

  --color-accent-2-100: #f0fae1;
  --color-accent-2-700: #56633f;

  --font-heading: "Caprasimo", system-ui, sans-serif;
  --font-body: "Figtree", system-ui, sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
}

* , *::before, *::after { box-sizing: border-box; }

html, body { height: 100%; margin: 0; overflow: hidden; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
}

button { font-family: inherit; }
a { color: var(--color-accent-700); }
a:hover { color: var(--color-accent-600); }

@keyframes blink { 0%, 100% { opacity: .3 } 50% { opacity: 1 } }

::-webkit-scrollbar { width: 9px; height: 9px }
::-webkit-scrollbar-thumb { background: var(--color-neutral-400); border-radius: 999px }
::-webkit-scrollbar-track { background: transparent }

.app {
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  overflow: hidden;
}

/* ---- header ---- */
.topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 11px 20px;
  border-bottom: 1px solid var(--color-divider);
  flex: 0 0 auto;
}
.brand { display: flex; align-items: baseline; gap: 9px; }
.brand-name { font-family: var(--font-heading); font-size: 23px; letter-spacing: -.02em; }
.brand-sub { font-size: 12.5px; color: var(--color-neutral-700); }

.pill-group {
  display: flex; gap: 3px;
  background: var(--color-surface);
  padding: 3px; border-radius: 999px;
}
.pill-btn {
  border: 0; cursor: pointer; font-size: 12px; font-weight: 600;
  padding: 6px 13px; border-radius: 999px; color: var(--color-text);
  background: transparent;
}
.pill-btn.small { font-size: 11.5px; padding: 8px 15px; }
.pill-btn.outline { border: 1px solid var(--color-divider); }
.pill-btn.primary { border: 0; background: var(--color-accent); color: var(--color-bg); font-weight: 700; }
.pill-btn[data-paper].active,
.pill-btn[data-paper-active="true"] { background: var(--color-bg); }

.zoom-group { display: flex; align-items: center; gap: 6px; margin-left: auto; font-size: 12px; color: var(--color-neutral-700); }
.round-btn {
  width: 30px; height: 30px; border: 1px solid var(--color-divider);
  background: transparent; border-radius: 999px; cursor: pointer;
  font-size: 15px; line-height: 1; color: var(--color-text);
}
.round-btn.dashed { border-style: dashed; border-color: var(--color-neutral-400); color: var(--color-neutral-700); }
.zoom-label { min-width: 44px; text-align: center; font-variant-numeric: tabular-nums; font-weight: 600; }

.recog-btn { display: flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 600; padding: 7px 15px; }
.recog-btn .dot { width: 8px; height: 8px; border-radius: 999px; background: var(--color-neutral-400); }
.recog-btn.on { background: color-mix(in srgb, var(--color-accent-2) 24%, transparent); }
.recog-btn.on .dot { background: var(--color-accent-2-700); }

/* ---- body row ---- */
.body-row { flex: 1; display: flex; min-height: 0; }

/* ---- left toolbar ---- */
.toolbar {
  flex: 0 0 auto; width: 74px; padding: 12px 0;
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  border-right: 1px solid var(--color-divider);
  background: color-mix(in srgb, var(--color-surface) 50%, transparent);
  overflow: auto;
}
.tool-btn {
  width: 48px; height: 44px; display: grid; place-items: center;
  border: 0; border-radius: var(--radius-md); cursor: pointer;
  color: var(--color-text); background: transparent;
}
.tool-btn.active { background: color-mix(in srgb, var(--color-accent) 26%, transparent); }
.tool-btn.glyph { font-family: var(--font-heading); font-size: 22px; line-height: 1; }
.tool-btn.glyph.small { font-size: 21px; }
.tool-btn.glyph.big { font-size: 23px; }
.tool-btn.plain { background: transparent; }
.toolbar-sep { width: 34px; height: 1px; background: var(--color-divider); margin: 7px 0; }

/* ---- sheet / canvas ---- */
.sheet-area { flex: 1; min-width: 0; display: flex; flex-direction: column; position: relative; }
.sheet-wrap { flex: 1; min-height: 0; position: relative; overflow: hidden; }
#sheetCanvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; display: block; }

.hint {
  position: absolute; left: 16px; bottom: 14px; pointer-events: none;
  font-size: 11.5px; color: var(--color-neutral-600);
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  padding: 5px 11px; border-radius: 999px;
}
.sheet-actions { position: absolute; right: 14px; top: 14px; display: flex; gap: 8px; }
.sheet-actions .pill-btn {
  border: 1px solid var(--color-divider);
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  padding: 8px 15px; font-size: 12.5px; font-weight: 600;
}

.page-bar {
  flex: 0 0 auto; display: flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-top: 1px solid var(--color-divider);
  background: color-mix(in srgb, var(--color-surface) 45%, transparent);
}
.page-tabs { display: flex; gap: 6px; }
.page-tab {
  border: 1px solid var(--color-divider); cursor: pointer; border-radius: 999px;
  padding: 6px 15px; font-size: 12px; font-weight: 600; color: var(--color-text);
  background: transparent;
}
.page-tab.active { background: color-mix(in srgb, var(--color-accent) 22%, transparent); }
.page-hint { margin-left: auto; font-size: 11.5px; color: var(--color-neutral-600); }

/* ---- right sidebar ---- */
.side { flex: 0 0 auto; width: 372px; display: flex; flex-direction: column; border-left: 1px solid var(--color-divider); min-height: 0; }

.readings-section { flex: 0 0 42%; display: flex; flex-direction: column; min-height: 0; border-bottom: 1px solid var(--color-divider); }
.side-head { display: flex; align-items: center; gap: 8px; padding: 13px 16px 9px; }
.side-head h6 { margin: 0; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; font-family: var(--font-heading); }
.side-head .pill-btn { margin-left: auto; }

.readings-list { flex: 1; overflow: auto; padding: 0 16px 14px; display: flex; flex-direction: column; gap: 8px; }
.reading-empty { font-size: 12.5px; color: var(--color-neutral-600); margin: 6px 0 0; text-wrap: pretty; }
.reading-card {
  border: 1px solid var(--color-divider); border-radius: var(--radius-md);
  padding: 9px 11px; background: color-mix(in srgb, var(--color-surface) 40%, transparent);
  display: flex; flex-direction: column; gap: 7px;
}
.reading-row1 { display: flex; align-items: center; gap: 8px; }
.reading-n { font-size: 10.5px; font-weight: 700; color: var(--color-neutral-600); min-width: 44px; }
.reading-text {
  flex: 1; min-width: 0; border: 0; background: transparent;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 15px;
  color: var(--color-text); padding: 2px 0;
}
.reading-text:focus-visible { outline: 1px solid var(--color-accent); border-radius: 4px; }
.reading-row2 { display: flex; gap: 6px; align-items: center; }
.reading-row2 button {
  border: 1px solid var(--color-divider); background: transparent; cursor: pointer;
  border-radius: 999px; padding: 4px 11px; font-size: 11px; font-weight: 600; color: var(--color-text);
}
.reading-row2 .go-btn { border: 0; padding: 4px 6px; color: var(--color-accent-700); }
.reading-conf { margin-left: auto; font-size: 10.5px; color: var(--color-neutral-600); }
.reading-conf.bad { color: var(--color-accent-700); }

.chat-section { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.chat-list { flex: 1; overflow: auto; padding: 8px 16px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 92%; border-radius: var(--radius-md); padding: 9px 12px; font-size: 13.5px; line-height: 1.5; white-space: pre-wrap; text-wrap: pretty; }
.msg.bot { align-self: flex-start; background: var(--color-surface); }
.msg.user { align-self: flex-end; background: color-mix(in srgb, var(--color-accent) 20%, transparent); }
.thinking { align-self: flex-start; font-size: 12px; color: var(--color-neutral-600); animation: blink 1.1s infinite; }

.chat-form { flex: 0 0 auto; display: flex; gap: 7px; padding: 10px 14px 14px; border-top: 1px solid var(--color-divider); }
.chat-input {
  flex: 1; min-width: 0; border: 1px solid var(--color-divider); background: var(--color-neutral-100);
  border-radius: 999px; padding: 9px 14px; font-family: var(--font-body); font-size: 13px; color: var(--color-text);
}
.send-btn {
  border: 0; cursor: pointer; background: var(--color-accent); color: var(--color-bg);
  border-radius: 999px; width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto;
}
.send-btn:disabled { opacity: .5; cursor: default; }