/* ── ТЕМЫ ────────────────────────────────────────────────────────────────── */

body.dark {
  --bg:           #0A0A10;
  --bg-surface:   #0F0F1A;
  --border:       #18182C;
  --text:         #D5D1C8;
  --text-dim:     #58587A;
  --text-meta:    #7070A8;
  --wave-idle:    #1C1C2E;
  --wave-listen:  #4A7AC0;
  --wave-think:   #383850;
  --btn-bg:       #0F0F1A;
  --btn-border:   #1C1C30;
  --btn-text:     #5050A0;
  --save-bg:      #14142A;
  --save-border:  #22224A;
  --save-text:    #7070C0;
  --error-bg:     rgba(160,40,40,.08);
  --error-border: rgba(160,40,40,.25);
  --error-text:   #B06060;
  --drawer-bg:    #0D0D1C;
  --overlay:      rgba(0,0,0,.6);
}

body.medium {
  --bg:           #0C0C20;
  --bg-surface:   #13132E;
  --border:       #20203A;
  --text:         #DDD8F0;
  --text-dim:     #60608A;
  --text-meta:    #8888C0;
  --wave-idle:    #222238;
  --wave-listen:  #6080D0;
  --wave-think:   #3A3A58;
  --btn-bg:       #13132E;
  --btn-border:   #20203A;
  --btn-text:     #6868B8;
  --save-bg:      #18183A;
  --save-border:  #28286A;
  --save-text:    #8888D0;
  --error-bg:     rgba(170,50,50,.08);
  --error-border: rgba(170,50,50,.25);
  --error-text:   #C07070;
  --drawer-bg:    #10102A;
  --overlay:      rgba(0,0,0,.65);
}

body.light {
  --bg:           #ECEAE4;
  --bg-surface:   #FAF8F4;
  --border:       #D6D2CA;
  --text:         #1E1C28;
  --text-dim:     #888070;
  --text-meta:    #706860;
  --wave-idle:    #C8C4BC;
  --wave-listen:  #5080C0;
  --wave-think:   #B0ACA4;
  --btn-bg:       #FAF8F4;
  --btn-border:   #D6D2CA;
  --btn-text:     #706070;
  --save-bg:      #FAF8F4;
  --save-border:  #C0B8B0;
  --save-text:    #806870;
  --error-bg:     rgba(160,40,40,.05);
  --error-border: rgba(160,40,40,.2);
  --error-text:   #904040;
  --drawer-bg:    #F4F0EA;
  --overlay:      rgba(0,0,0,.3);
}

/* ── BASE ───────────────────────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background .25s, color .25s;
}

button { cursor: pointer; font-family: inherit; }

/* ── HEADER ─────────────────────────────────────────────────────────────── */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.header-logo {
  font-family: Georgia, serif;
  font-size: 18px;
  font-weight: normal;
  letter-spacing: .06em;
  color: var(--text);
  opacity: .7;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 18px;
  padding: 4px;
  display: flex;
  align-items: center;
  transition: color .2s;
}
.icon-btn:hover { color: var(--text); }

.themes {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-left: 4px;
}

.theme-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--border);
  padding: 0;
  transition: transform .15s;
}
.theme-dot:hover { transform: scale(1.2); }
.t-dark   { background: #0A0A10; border-color: #2A2A40; }
.t-medium { background: #0C0C20; border-color: #2A2A50; }
.t-light  { background: #ECEAE4; border-color: #C0BCB4; }

/* ── MAIN ───────────────────────────────────────────────────────────────── */

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 36px 20px 100px;
  max-width: 640px;
  margin: 0 auto;
  width: 100%;
}

/* ── WAVEFORM ───────────────────────────────────────────────────────────── */

.wave-wrap {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 20px;
}

#waveform {
  display: block;
  width: 100%;
  height: 110px;
}

/* ── STATUS ─────────────────────────────────────────────────────────────── */

.status-label {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--text-dim);
  margin-bottom: 20px;
  height: 16px;
  transition: color .2s;
}

/* ── TALK BUTTON ────────────────────────────────────────────────────────── */

.btn-talk {
  padding: 12px 44px;
  border: 1px solid var(--btn-border);
  border-radius: 3px;
  background: var(--btn-bg);
  color: var(--btn-text);
  font-size: 12px;
  letter-spacing: .1em;
  user-select: none;
  transition: all .2s;
  margin-bottom: 24px;
}
.btn-talk:hover:not(:disabled) { border-color: var(--text-dim); color: var(--text); }
.btn-talk:disabled { opacity: .35; cursor: not-allowed; }
.btn-talk.listening {
  border-color: var(--wave-listen);
  color: var(--wave-listen);
}

/* ── TEXT INPUT ─────────────────────────────────────────────────────────── */

.text-input-wrap {
  width: 100%;
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  background: var(--bg-surface);
  margin-bottom: 24px;
}

#text-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  padding: 12px 16px;
  resize: none;
  line-height: 1.5;
}
#text-input::placeholder { color: var(--text-dim); }

.send-btn {
  background: none;
  border: none;
  border-left: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0 16px;
  font-size: 18px;
  display: flex;
  align-items: center;
  transition: color .2s;
}
.send-btn:hover { color: var(--text); }

/* ── EXCHANGE ───────────────────────────────────────────────────────────── */

.exchange {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.exchange-question {
  font-size: 13px;
  color: var(--text-dim);
  font-style: italic;
  padding: 0 2px;
  line-height: 1.6;
}

.exchange-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.source-tag {
  font-size: 11px;
  letter-spacing: .06em;
  padding: 2px 8px;
  border-radius: 2px;
  border: 1px solid currentColor;
  opacity: .7;
}

.path-tag {
  font-size: 11px;
  color: var(--text-dim);
}

.exchange-answer {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-surface);
}

.exchange-insight {
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-meta);
  font-style: italic;
  padding: 12px 16px;
  border-left: 2px solid var(--border);
  opacity: .8;
}

/* ── ERROR ──────────────────────────────────────────────────────────────── */

.error-bar {
  background: var(--error-bg);
  border-top: 1px solid var(--error-border);
  color: var(--error-text);
  font-size: 13px;
  padding: 10px 20px;
  text-align: center;
}

/* ── BOTTOM BAR ─────────────────────────────────────────────────────────── */

.bottom-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.version-tag {
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--text-dim);
  opacity: .5;
}

.save-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border: 1px solid var(--save-border);
  border-radius: 3px;
  background: var(--save-bg);
  color: var(--save-text);
  font-size: 12px;
  letter-spacing: .06em;
  transition: all .2s;
}
.save-btn:hover { border-color: var(--text-dim); color: var(--text); }

/* ── DRAWER ─────────────────────────────────────────────────────────────── */

.overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  z-index: 10;
}

.drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: min(360px, 90vw);
  background: var(--drawer-bg);
  border-left: 1px solid var(--border);
  z-index: 20;
  display: flex;
  flex-direction: column;
}

.drawer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: .05em;
  flex-shrink: 0;
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.drawer-empty {
  font-size: 13px;
  color: var(--text-dim);
  text-align: center;
  padding-top: 40px;
  opacity: .5;
}

.drawer-item {}

.drawer-q {
  font-size: 12px;
  color: var(--text-dim);
  font-style: italic;
  margin-bottom: 6px;
  line-height: 1.5;
}

.drawer-a {
  font-size: 13px;
  color: var(--text);
  line-height: 1.65;
}

.drawer-ts {
  font-size: 10px;
  color: var(--text-dim);
  opacity: .4;
  margin-top: 4px;
}

/* ── UTILITIES ──────────────────────────────────────────────────────────── */

[hidden] { display: none !important; }

@media (max-width: 480px) {
  .main { padding: 24px 16px 100px; }
  .exchange-answer { padding: 14px; }
}
.exchange-answer p {
  margin: 0 0 14px;
}

.exchange-answer p:last-child {
  margin-bottom: 0;
}

.exchange-answer strong {
  font-weight: 650;
  color: var(--text);
}

.exchange-answer em {
  font-style: italic;
  opacity: .9;
}

.exchange-answer u {
  text-underline-offset: 3px;
}

.exchange-answer h1,
.exchange-answer h2,
.exchange-answer h3 {
  margin: 20px 0 10px;
  line-height: 1.3;
  font-weight: 600;
}

.exchange-answer h1 { font-size: 22px; }
.exchange-answer h2 { font-size: 19px; }
.exchange-answer h3 { font-size: 16px; }

.exchange-answer ul,
.exchange-answer ol {
  margin: 10px 0 16px 24px;
}

.exchange-answer li {
  margin: 5px 0;
}

.exchange-answer blockquote {
  margin: 16px 0;
  padding: 10px 16px;
  border-left: 2px solid var(--text-meta);
  color: var(--text-meta);
  font-style: italic;
}

.exchange-answer hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 20px 0;
}

.exchange-answer code {
  font-family: monospace;
  font-size: .92em;
  background: var(--bg);
  padding: 2px 5px;
  border-radius: 3px;
}