/* ============================================================
   Aperta — Stylesheet
   Palette: warm paper / ink / amber — matches brand site
   Fonts: Cormorant Garamond + DM Mono + Instrument Sans
   ============================================================ */

/* ── Reset & Variables ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink:          #1a1714;
  --ink-faint:    #4a4540;
  --ink-dim:      rgba(26,23,20,0.35);
  --paper:        #f5f0e8;
  --paper-warm:   #ede8dc;
  --paper-deep:   #e4ddd0;
  --amber:        #c8873a;
  --amber-light:  #e8a85a;
  --amber-pale:   #f7e8d4;
  --amber-dim:    rgba(200,135,58,0.12);
  --sage:         #7a8c7e;
  --rule:         rgba(26,23,20,0.12);
  --rule-strong:  rgba(26,23,20,0.22);

  --ann-red:      #b84040;
  --ann-red-bg:   rgba(184,64,64,0.08);
  --ann-amb:      #c8873a;
  --ann-amb-bg:   rgba(200,135,58,0.10);
  --ann-blu:      #4a7a9c;
  --ann-blu-bg:   rgba(74,122,156,0.08);
  --ann-done:     #7a6a9c;
  --ann-done-bg:  rgba(122,106,156,0.10);

  --score-high:   #5a8c6a;
  --score-mid:    #c8873a;
  --score-low:    #b84040;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-ui:      'Instrument Sans', system-ui, sans-serif;
  --font-mono:    'DM Mono', 'Courier New', monospace;

  --radius:    8px;
  --radius-sm: 5px;
  --shadow:    0 2px 12px rgba(26,23,20,0.10);
  --shadow-lg: 0 6px 32px rgba(26,23,20,0.16);
}

/* ── Noise texture overlay (matches brand site) ─────────────── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 9999; opacity: 0.5;
}

html { font-size: 15px; scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  font-weight: 300;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ── Header ──────────────────────────────────────────────────── */
#header {
  border-bottom: 1px solid var(--rule);
  padding: 0 40px;
  flex-shrink: 0;
  background: linear-gradient(to bottom, var(--paper) 60%, transparent);
  position: sticky; top: 0; z-index: 100;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 58px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink);
  text-decoration: none;
}
.logo-mark {
  font-weight: 300;
  font-style: italic;
  color: var(--amber);
  margin-left: 0.1em;
}
.tagline {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-faint);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding-left: 20px;
  border-left: 1px solid var(--rule-strong);
}

/* ── Main layout ─────────────────────────────────────────────── */
#main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 0 40px;
  min-height: calc(100vh - 58px);
}

/* ── Input Panel ─────────────────────────────────────────────── */
#input-panel {
  padding: 40px 44px 40px 0;
  border-right: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.input-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ── Paste Warning ───────────────────────────────────────────── */
.paste-warning {
  border: 1px solid var(--amber);
  background: var(--amber-pale);
  border-radius: var(--radius-sm);
  overflow: hidden;
  animation: slide-down .25s ease;
}
@keyframes slide-down { from { opacity:0; transform: translateY(-6px); } to { opacity:1; transform: translateY(0); } }
.paste-warning-inner {
  display: flex; align-items: flex-start;
  gap: 10px; padding: 12px 14px;
}
.paste-warning-icon { color: var(--amber); font-size: 13px; flex-shrink: 0; margin-top: 1px; }
.paste-warning-text { font-size: 0.82rem; color: var(--ink); line-height: 1.5; flex: 1; }
.paste-warning-close {
  background: none; border: none; color: var(--ink-faint);
  cursor: pointer; font-size: 13px; padding: 0 2px; flex-shrink: 0; line-height: 1;
}
.paste-warning-close:hover { color: var(--ink); }

/* ── Textarea ────────────────────────────────────────────────── */
.textarea-wrap { position: relative; }
.message-input {
  width: 100%; min-height: 220px;
  background: var(--paper-warm);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 300;
  line-height: 1.8;
  padding: 16px 18px;
  resize: vertical;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.message-input:focus {
  border-color: var(--amber);
  box-shadow: 3px 3px 0 var(--amber-pale);
}
.message-input::placeholder { color: var(--ink-dim); }
.char-count {
  position: absolute; bottom: 10px; right: 14px;
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--ink-faint); pointer-events: none;
  letter-spacing: 0.06em;
}

/* ── Context field ───────────────────────────────────────────── */
.context-toggle {
  background: none; border: none;
  color: var(--ink-faint); cursor: pointer;
  font-family: var(--font-mono); font-size: 0.72rem;
  letter-spacing: 0.08em;
  display: flex; align-items: center; gap: 6px;
  padding: 4px 0; transition: color .15s;
}
.context-toggle:hover { color: var(--amber); }
.context-field { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
.context-label { font-size: 0.8rem; color: var(--ink-faint); line-height: 1.6; }
.context-input {
  width: 100%;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.8rem; font-weight: 300;
  line-height: 1.6; padding: 12px 14px;
  resize: vertical; outline: none;
  transition: border-color .2s, color .15s;
}
.context-input:focus { border-color: var(--amber); color: var(--ink); }
.context-input::placeholder { color: var(--ink-dim); }

/* ── Action row ──────────────────────────────────────────────── */
.action-row { display: flex; align-items: center; gap: 12px; }
.analyse-btn {
  flex: 1;
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 14px 24px;
  cursor: pointer;
  transition: background .2s, box-shadow .2s, transform .1s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.analyse-btn:enabled:hover {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 3px 3px 0 var(--amber-pale);
}
.analyse-btn:disabled {
  background: var(--paper-warm);
  border-color: var(--rule);
  color: var(--ink-faint);
  cursor: not-allowed;
}
.analyse-countdown {
  font-size: 0.7rem; font-weight: 400;
  background: rgba(26,23,20,.15); border-radius: 3px;
  padding: 2px 7px;
}
.copy-btn {
  background: none;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  padding: 10px 16px; cursor: pointer; transition: all .15s;
  white-space: nowrap;
}
.copy-btn:hover { color: var(--ink); border-color: var(--ink-faint); }
.copy-btn-primary {
  background: var(--paper-warm);
  border-color: var(--rule-strong);
  color: var(--ink);
  font-size: 0.72rem;
  padding: 11px 20px;
}
.copy-btn-primary:hover { border-color: var(--amber); color: var(--amber); }

/* ── Results Panel ───────────────────────────────────────────── */
#results-panel {
  padding: 40px 0 40px 44px;
  display: flex; flex-direction: column;
  overflow-y: auto;
}

/* ── Loading ─────────────────────────────────────────────────── */
.results-loading {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 16px; height: 100%; min-height: 300px;
}
.spinner {
  width: 28px; height: 28px;
  border: 1.5px solid var(--rule-strong);
  border-top-color: var(--amber);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text {
  font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.08em;
  color: var(--ink-faint);
}

/* ── Clarity Score ───────────────────────────────────────────── */
.clarity-block {
  display: flex; flex-direction: column;
  align-items: flex-start;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 28px;
}
.clarity-score {
  font-family: var(--font-display);
  font-size: 96px; font-weight: 300;
  line-height: 1; letter-spacing: -4px;
  transition: color .4s;
  color: var(--score-mid);
}
.clarity-score.high { color: var(--score-high); }
.clarity-score.mid  { color: var(--score-mid); }
.clarity-score.low  { color: var(--score-low); }
.clarity-label {
  font-family: var(--font-mono);
  font-size: 0.65rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint);
  margin-top: 6px;
}

/* ── Emotion Banner ──────────────────────────────────────────── */
.emotion-banner {
  border-radius: var(--radius);
  border: 1px solid var(--rule);
  padding: 14px 16px;
  margin-bottom: 28px;
  background: var(--paper-warm);
  transition: border-color .3s, background .3s;
}
.emotion-primary {
  font-size: 0.92rem; font-weight: 500;
  margin-bottom: 4px;
}
.emotion-explain {
  font-size: 0.8rem; color: var(--ink-faint);
  line-height: 1.6; font-style: italic;
}

/* ── Result Sections ─────────────────────────────────────────── */
.result-section {
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--rule);
}
.result-section:last-child { border-bottom: none; }
.result-section-title {
  font-family: var(--font-mono);
  font-size: 0.65rem; font-weight: 400;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 12px;
  display: flex; align-items: center; justify-content: space-between;
}

/* ── Annotated Message ───────────────────────────────────────── */
.annotated-message {
  font-family: var(--font-mono);
  font-size: 0.84rem; line-height: 1.9;
  color: var(--ink);
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 16px 18px;
  word-break: break-word;
}
.annotation-hint {
  font-family: var(--font-mono);
  font-size: 0.65rem; color: var(--ink-faint);
  margin-top: 8px; font-style: italic; letter-spacing: 0.04em;
}

/* Underlined annotation spans */
.ann {
  cursor: pointer;
  border-radius: 2px;
  transition: background .15s;
  text-decoration-line: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
}
.ann.red    { color: var(--ann-red);  text-decoration-color: var(--ann-red);  }
.ann.amber  { color: var(--ann-amb);  text-decoration-color: var(--ann-amb);  }
.ann.blue   { color: var(--ann-blu);  text-decoration-color: var(--ann-blu);  }
.ann.done {
  color: var(--ann-done);
  text-decoration-color: var(--ann-done);
  text-decoration-style: dashed;
  background: var(--ann-done-bg);
}
.ann:hover { background: rgba(26,23,20,.06); }

/* ── Colour legend ───────────────────────────────────────────── */
.ann-legend {
  display: flex; align-items: center; gap: 10px;
}
.legend-item {
  display: flex; align-items: center; gap: 4px;
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.06em; color: var(--ink-faint);
}
.legend-dot {
  width: 7px; height: 7px; border-radius: 50%;
  display: inline-block; flex-shrink: 0;
}
.legend-dot.blue  { background: var(--ann-blu); }
.legend-dot.amber { background: var(--ann-amb); }
.legend-dot.red   { background: var(--ann-red); }

/* ── Coaching popup secondary note ───────────────────────────── */
.coaching-secondary {
  font-family: var(--font-mono);
  font-size: 0.68rem; color: var(--ink-faint);
  line-height: 1.6; font-style: italic;
  padding-top: 6px; border-top: 1px solid var(--rule);
}
.coaching-secondary-label {
  font-style: normal; font-weight: 500;
  color: var(--ink-faint); margin-right: 4px;
}

/* ── Coaching Popup ──────────────────────────────────────────── */
.coaching-popup {
  position: fixed; z-index: 9999;
  width: 320px;
  filter: drop-shadow(0 6px 24px rgba(26,23,20,0.22));
}
.coaching-popup-inner {
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  padding: 16px;
  display: flex; flex-direction: column; gap: 10px;
}
.coaching-popup-arrow {
  width: 12px; height: 8px;
  background: var(--paper);
  clip-path: polygon(50% 100%, 0 0, 100% 0);
  margin: 0 auto;
}
.coaching-popup.arrow-below .coaching-popup-arrow {
  clip-path: polygon(50% 0, 0 100%, 100% 100%);
  order: -1;
}
.coaching-phrase {
  font-family: var(--font-mono);
  font-size: 0.72rem; color: var(--ink-faint);
  background: var(--paper-warm); border: 1px solid var(--rule);
  padding: 3px 8px; border-radius: 3px;
  display: inline-block;
}
.coaching-question {
  font-size: 0.88rem; font-weight: 400;
  color: var(--ink); line-height: 1.55;
}
.coaching-reason {
  font-family: var(--font-mono);
  font-size: 0.7rem; color: var(--ink-faint);
  line-height: 1.6; font-style: italic;
  padding-top: 8px; border-top: 1px solid var(--rule);
}
.coaching-answer {
  width: 100%; background: var(--paper-warm);
  border: 1px solid var(--rule); border-radius: var(--radius-sm);
  color: var(--ink); font-family: var(--font-ui);
  font-size: 0.86rem; font-weight: 300;
  line-height: 1.5; padding: 9px 12px;
  resize: none; outline: none; transition: border-color .15s, box-shadow .15s;
}
.coaching-answer:focus {
  border-color: var(--amber);
  box-shadow: 2px 2px 0 var(--amber-pale);
}
.coaching-answer::placeholder { color: var(--ink-dim); }
.coaching-popup-actions {
  display: flex; justify-content: flex-end; gap: 8px;
}
.coaching-cancel {
  background: none; border: 1px solid var(--rule);
  border-radius: var(--radius-sm); color: var(--ink-faint);
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 7px 14px; cursor: pointer; transition: all .15s;
}
.coaching-cancel:hover { color: var(--ink); border-color: var(--rule-strong); }
.coaching-apply {
  background: var(--ink); border: 1px solid var(--ink);
  border-radius: var(--radius-sm); color: var(--paper);
  font-family: var(--font-mono); font-size: 0.68rem;
  font-weight: 400; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 7px 14px; cursor: pointer; transition: all .15s;
}
.coaching-apply:hover { background: var(--amber); border-color: var(--amber); }

.popup-overlay { position: fixed; inset: 0; z-index: 9998; }

/* ── Refine Block ────────────────────────────────────────────── */
.refine-block {
  background: var(--amber-pale);
  border: 1px solid rgba(200,135,58,.3);
  border-radius: var(--radius);
  padding: 16px; margin-bottom: 28px;
  display: flex; flex-direction: column; gap: 12px;
}
.refine-answers-summary {
  font-size: 0.8rem; color: var(--ink-faint); line-height: 1.7;
  display: flex; flex-direction: column; gap: 4px;
}
.refine-answers-summary strong { color: var(--ink); }
.refine-btn {
  background: var(--ink); border: 1px solid var(--ink);
  border-radius: var(--radius); color: var(--paper);
  font-family: var(--font-mono); font-size: 0.72rem;
  font-weight: 400; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 13px 20px; cursor: pointer;
  transition: all .15s;
}
.refine-btn:hover { background: var(--amber); border-color: var(--amber); }
.refine-btn:disabled { opacity: .5; cursor: not-allowed; }

/* ── Rewrite Section ─────────────────────────────────────────── */
.rewrite-clean, .rewrite-diff {
  font-family: var(--font-mono);
  font-size: 0.84rem; line-height: 1.9;
  color: var(--ink);
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 16px 18px;
  word-break: break-word;
  margin-bottom: 10px;
}
ins {
  background: rgba(90,140,106,.15);
  color: var(--score-high);
  text-decoration: none;
  border-radius: 2px; padding: 0 2px;
}
del {
  background: rgba(184,64,64,.1);
  color: var(--ann-high);
  text-decoration: line-through;
  border-radius: 2px; padding: 0 2px; opacity: .8;
}
.toggle-diff-btn {
  background: none; border: 1px solid var(--rule);
  border-radius: 4px; color: var(--ink-faint);
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.08em;
  padding: 4px 10px; cursor: pointer; transition: all .15s;
}
.toggle-diff-btn:hover { color: var(--ink); border-color: var(--rule-strong); }

/* ── Change Log ──────────────────────────────────────────────── */
.change-log { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; }
.change-item {
  font-family: var(--font-mono);
  font-size: 0.7rem; color: var(--ink-faint);
  background: var(--paper-warm); border: 1px solid var(--rule);
  border-radius: 5px; padding: 5px 10px;
  display: flex; align-items: center; gap: 6px;
}
.change-item::before { content: '↳'; color: var(--amber); font-size: 0.68rem; }
.rewrite-actions { display: flex; justify-content: flex-end; margin-top: 12px; }

/* ── Utility ─────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--rule-strong); border-radius: 3px; }


/* ── Needs Block ─────────────────────────────────────────────── */
.needs-block {
  border-radius: var(--radius);
  border: 1px solid rgba(90,140,106,.25);
  background: rgba(90,140,106,.06);
  padding: 12px 16px;
  margin-bottom: 20px;
}
.needs-label {
  font-family: var(--font-mono);
  font-size: 0.65rem; font-weight: 400;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--sage); margin-bottom: 6px;
}
.needs-text {
  font-size: 0.86rem; color: var(--ink);
  line-height: 1.65; font-style: italic;
}

/* ── Meta Question Block ─────────────────────────────────────── */
.meta-question-block {
  border-radius: var(--radius);
  border: 1px solid var(--rule-strong);
  background: var(--paper-warm);
  padding: 14px 16px;
  margin-bottom: 20px;
  display: flex; flex-direction: column; gap: 8px;
}
.meta-question-label {
  font-family: var(--font-mono);
  font-size: 0.65rem; font-weight: 400;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint);
}
.meta-question-text {
  font-size: 0.9rem; font-weight: 400;
  color: var(--ink); line-height: 1.5;
}
.meta-question-answer {
  width: 100%;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-family: var(--font-ui); font-size: 0.86rem; font-weight: 300;
  line-height: 1.5; padding: 9px 12px;
  resize: none; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.meta-question-answer:focus {
  border-color: var(--amber);
  box-shadow: 2px 2px 0 var(--amber-pale);
}
.meta-question-answer::placeholder { color: var(--ink-dim); }

/* ── Secondary colour note in coaching popup ─────────────────── */
.secondary-colour-note {
  font-size: 0.68rem;
  font-style: normal;
  margin-left: 4px;
  opacity: .85;
}

/* ── Mobile ──────────────────────────────────────────────────── */
@media (max-width: 800px) {
  #main { grid-template-columns: 1fr; padding: 0 20px; }
  #input-panel { padding: 28px 0; border-right: none; border-bottom: 1px solid var(--rule); }
  #results-panel { padding: 28px 0; }
  .clarity-score { font-size: 72px; }
  .coaching-popup { width: calc(100vw - 40px); left: 20px !important; }
  #header { padding: 0 20px; }
  .tagline { display: none; }
}