@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  color-scheme: light;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.5;

  --bg: #eef1f6;
  --surface: #ffffff;
  --surface-alt: #f6f7fb;
  --surface-raised: #eef0f7;
  --border: #e1e4ec;
  --border-soft: #e8eaf1;
  --text: #1e2433;
  --muted: #667085;
  --muted-dim: #99a1b3;
  --accent: #3f5be0;
  --accent-strong: #3448bd;
  --accent-soft: rgba(63, 91, 224, 0.09);
  --danger: #d9455f;
  --danger-soft: rgba(217, 69, 95, 0.09);
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --shadow-sm: 0 1px 2px rgba(20, 24, 40, 0.04);
  --shadow-md: 0 4px 16px rgba(20, 24, 40, 0.06);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
}

/* ================= APP SHELL ================= */

.app-shell {
  display: grid;
  grid-template-columns: 232px 1fr;
  height: 100vh;
}

/* ================= SIDEBAR / CONTROL RAIL ================= */

.control-rail {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow-y: auto;
  box-shadow: var(--shadow-sm);
}

.rail-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-soft);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.brand-name {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.brand-sub {
  margin: 2px 0 0;
  font-size: 0.72rem;
  color: var(--muted-dim);
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.rail-groups {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rail-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rail-label {
  margin: 0 0 2px 2px;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted-dim);
  font-family: var(--mono);
}

.rail-btn {
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--text);
  background: var(--surface-alt);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease, opacity 0.15s ease;
}

.rail-btn:hover {
  border-color: var(--accent);
  background: var(--surface-raised);
}

.rail-btn:active {
  transform: scale(0.98);
}

.rail-btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  font-weight: 600;
}

.rail-btn-primary:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.rail-btn-danger {
  color: var(--danger);
}

.rail-btn-danger:hover {
  border-color: var(--danger);
  background: var(--danger-soft);
}

.rail-btn:disabled,
.rail-btn[disabled] {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

/* ================= MAIN AREA ================= */

.main-area {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100vh;
  padding: 20px 24px;
  gap: 16px;
}

.main-topbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.main-topbar h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.topbar-sub {
  margin: 4px 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text);
  white-space: nowrap;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  flex-shrink: 0;
  animation: pulse-dot 2.2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ================= CONTENT GRID ================= */

.main-grid {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 16px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  min-height: 0;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.panel-header-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
  flex-shrink: 0;
}

.panel-header-row h2 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.panel-note {
  font-size: 0.76rem;
  color: var(--muted-dim);
  font-family: var(--mono);
}

/* readouts panel: transcript / response / metadata */

.readouts-panel {
  grid-column: 1;
  grid-row: 1;
  padding: 0;
  border: none;
  background: transparent;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.readout-tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 18px;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.tile-title {
  display: block;
  margin-bottom: 10px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-family: var(--mono);
  flex-shrink: 0;
}

.tile-value {
  color: var(--text);
  font-size: 0.86rem;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-y: auto;
  min-height: 0;
  margin: 0;
}

.emotion-data {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent-strong);
}

/* camera panel: right, spans both rows */

.camera-panel {
  grid-column: 2;
  grid-row: 1 / span 2;
}

#camera {
  flex: 1;
  width: 100%;
  min-height: 0;
  background: #0e1320;
  border-radius: 12px;
  object-fit: cover;
  border: 1px solid var(--border);
}

/* composer panel: bottom left */

.composer-panel {
  grid-column: 1;
  grid-row: 2;
}

.composer-body {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 18px;
}

.composer-text,
.composer-image {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.field-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  flex-shrink: 0;
}

textarea {
  flex: 1;
  min-height: 0;
  width: 100%;
  font: inherit;
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 14px;
  resize: none;
  background: var(--surface-alt);
  color: var(--text);
}

textarea:focus,
input[type="file"]:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

input[type="file"] {
  width: 100%;
  min-width: 0;
  font: inherit;
  font-size: 0.8rem;
  display: block;
  padding: 9px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--muted);
  flex: 1;
}

.image-input-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
  margin-bottom: 10px;
  flex-shrink: 0;
}

.image-inline-btn {
  width: auto;
  flex-shrink: 0;
  padding: 8px 14px;
}

.preview-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.preview-panel {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-rows: auto auto auto auto;
  gap: 8px;
  padding: 12px;
  border-radius: 12px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  overflow-y: auto;
}

.preview-status {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  width: fit-content;
  font-family: var(--mono);
}

.preview-clear-button {
  justify-self: start;
  width: auto;
  padding: 7px 12px;
  font-size: 0.76rem;
}

.image-source-selection {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.image-source-selection label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.76rem;
}

.image-source-selection input[type="radio"] {
  accent-color: var(--accent);
}

#imagePreview {
  width: 100%;
  max-height: 110px;
  border-radius: 10px;
  object-fit: contain;
  display: block;
  background: #0e1320;
}

#imagePreview:not([src]),
#imagePreview[src=""] {
  display: none;
}

/* ================= SCROLLBARS ================= */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--muted-dim);
}

/* ================= RESPONSIVE ================= */

@media (max-width: 1080px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    height: auto;
    overflow: visible;
  }

  html, body {
    overflow: auto;
  }

  .control-rail {
    flex-direction: row;
    flex-wrap: wrap;
    overflow-x: auto;
    border-right: none;
    border-bottom: 1px solid var(--border-soft);
  }

  .rail-brand {
    border-bottom: none;
    padding-bottom: 0;
  }

  .rail-groups {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .main-area {
    height: auto;
  }

  .main-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .readouts-panel {
    grid-column: 1;
    grid-row: auto;
    grid-template-columns: 1fr;
  }

  .camera-panel {
    grid-column: 1;
    grid-row: auto;
  }

  #camera {
    min-height: 240px;
  }

  .composer-panel {
    grid-column: 1;
    grid-row: auto;
  }

  .composer-body {
    grid-template-columns: 1fr;
  }
}