/* =============================================================================
   FieldAudio Playground — fieldaudio_playground.css
   Follows FildraAI Design System v2.3
   Accent: --fa-accent (#34d399 emerald) | Surface: rgba(15,23,42,…)
   ============================================================================= */

/* ── CSS variables ────────────────────────────────────────────────────────── */
:root {
  --fa-accent:        #34d399;
  --fa-accent-glow:   rgba(52, 211, 153, 0.18);
  --fa-accent-dark:   #059669;
  --fa-blue:          #38bdf8;
  --fa-red:           #f87171;
  --fa-surface:       rgba(15, 23, 42, 0.96);
  --fa-surface-raised:rgba(20, 29, 50, 0.88);
  --fa-border:        rgba(148, 163, 184, 0.15);
  --fa-border-accent: rgba(52, 211, 153, 0.35);
  --fa-text:          #f1f5f9;
  --fa-text-muted:    #94a3b8;
  --fa-text-dim:      #64748b;
  --fa-radius:        .85rem;
  --fa-radius-sm:     .5rem;
  --fa-shadow:        0 4px 24px rgba(0,0,0,.35);
  --fa-transition:    200ms ease;
}

[data-theme="light"] {
  --fa-surface:       rgba(255, 255, 255, 0.92);
  --fa-surface-raised:rgba(243, 244, 246, 0.88);
  --fa-border:        rgba(0, 0, 0, 0.1);
  --fa-text:          #020617;
  --fa-text-muted:    #4b5563;
  --fa-text-dim:      #9ca3af;
  --fa-accent-glow:   rgba(52, 211, 153, 0.12);
}

/* ── Atmosphere layer ─────────────────────────────────────────────────────── */
.fa-atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 60% 50% at 5%  10%, rgba(52, 211, 153, 0.14) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 95% 90%, rgba(56, 189, 248, 0.10) 0%, transparent 55%);
  pointer-events: none;
}

/* ── Collapsible intro ────────────────────────────────────────────────────── */
.fa-tool-intro {
  max-height: 0;
  overflow: hidden;
  transition: max-height 420ms ease;
}

.fa-intro-inner {
  padding: 2rem 1.5rem 2.5rem;
  max-width: 960px;
  margin: 0 auto;
}

.fa-intro-pill {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .3rem .9rem;
  border-radius: 99px;
  border: 1px solid var(--fa-border-accent);
  background: var(--fa-accent-glow);
  color: var(--fa-accent);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.fa-intro-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--fa-text);
  margin-bottom: .75rem;
  letter-spacing: -.02em;
}

.fa-intro-subtitle {
  color: var(--fa-text-muted);
  font-size: .975rem;
  line-height: 1.7;
  max-width: 680px;
  margin-bottom: 2rem;
}

.fa-intro-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.fa-intro-card {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  padding: 1.1rem 1.2rem;
  border-radius: var(--fa-radius-sm);
  border: 1px solid var(--fa-border);
  background: var(--fa-surface-raised);
  color: var(--fa-text-muted);
  font-size: .875rem;
  line-height: 1.55;
}

.fa-intro-card i {
  color: var(--fa-accent);
}

.fa-intro-card strong {
  display: block;
  color: var(--fa-text);
  font-weight: 600;
  font-size: .9rem;
}

/* ── Main playground layout ───────────────────────────────────────────────── */
.fa-playground-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  max-width: 1160px;
  margin: 1.25rem auto 0;
  padding: 0 1.25rem 2rem;
}

@media (max-width: 768px) {
  .fa-playground-wrap {
    grid-template-columns: 1fr;
  }
}

/* ── Panel ────────────────────────────────────────────────────────────────── */
.fa-panel {
  background: var(--fa-surface);
  border: 1px solid var(--fa-border);
  border-radius: var(--fa-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  box-shadow: var(--fa-shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.fa-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  flex-wrap: wrap;
}

.fa-panel-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--fa-text-dim);
}

.fa-badges {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
}

.fa-badge {
  display: inline-flex;
  align-items: center;
  padding: .2rem .55rem;
  border-radius: 99px;
  border: 1px solid var(--fa-border-accent);
  background: var(--fa-accent-glow);
  color: var(--fa-accent);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .03em;
}

/* ── Input/output controls ───────────────────────────────────────────────── */
.fa-control-group,
.fa-field-label,
.fa-text-input-wrap,
.fa-audio-input-wrap {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.fa-control-label,
.fa-field-label > span {
  font-family: 'IBM Plex Mono', monospace;
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--fa-text-dim);
}

.fa-control-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: .8rem;
}

@media (max-width: 900px) {
  .fa-control-grid {
    grid-template-columns: 1fr;
  }
}

.fa-segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .35rem;
  padding: .25rem;
  border-radius: var(--fa-radius-sm);
  border: 1px solid var(--fa-border);
  background: rgba(2, 6, 23, .35);
}

.fa-segment {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: 40px;
  padding: .45rem .65rem;
  border-radius: calc(var(--fa-radius-sm) - .18rem);
  border: 1px solid transparent;
  background: transparent;
  color: var(--fa-text-muted);
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--fa-transition);
}

.fa-segment:hover {
  color: var(--fa-text);
  background: rgba(148, 163, 184, .08);
}

.fa-segment.active {
  color: var(--fa-accent);
  border-color: var(--fa-border-accent);
  background: var(--fa-accent-glow);
}

.fa-select,
.fa-textarea {
  width: 100%;
  border-radius: var(--fa-radius-sm);
  border: 1px solid var(--fa-border);
  background: rgba(2, 6, 23, .45);
  color: var(--fa-text);
  font: inherit;
  outline: none;
  transition: border-color var(--fa-transition), box-shadow var(--fa-transition);
}

.fa-select {
  min-height: 45px;
  padding: .55rem .75rem;
}

.fa-textarea {
  resize: vertical;
  min-height: 118px;
  padding: .75rem;
  line-height: 1.55;
}

.fa-select:focus,
.fa-textarea:focus {
  border-color: var(--fa-border-accent);
  box-shadow: 0 0 0 2px var(--fa-accent-glow);
}

.fa-textarea::placeholder {
  color: var(--fa-text-dim);
}

/* ── Visualiser ───────────────────────────────────────────────────────────── */
.fa-visualiser-wrap {
  position: relative;
  border-radius: var(--fa-radius-sm);
  border: 1px solid var(--fa-border);
  background: rgba(2, 6, 23, 0.6);
  overflow: hidden;
  height: 90px;
}

.fa-visualiser {
  display: block;
  width: 100%;
  height: 100%;
}

.fa-visualiser-idle {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  color: var(--fa-text-dim);
  font-size: .875rem;
  pointer-events: none;
}

.fa-visualiser-idle i {
  color: var(--fa-accent);
  opacity: .5;
}

/* ── Timer row ────────────────────────────────────────────────────────────── */
.fa-timer-row {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: .82rem;
  color: var(--fa-text-muted);
}

.fa-timer-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fa-text-dim);
  flex-shrink: 0;
  transition: background var(--fa-transition);
}

.fa-timer-dot.fa-recording {
  background: #f87171;
  animation: fa-blink 1s steps(1) infinite;
}

@keyframes fa-blink {
  50% { opacity: 0; }
}

.fa-timer-label {
  font-weight: 600;
  color: var(--fa-text);
  min-width: 3.5rem;
}

.fa-timer-limit {
  color: var(--fa-text-dim);
  font-size: .75rem;
}

/* ── Record controls ──────────────────────────────────────────────────────── */
.fa-record-controls {
  display: flex;
  gap: .75rem;
}

.fa-btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem 1.1rem;
  border-radius: var(--fa-radius-sm);
  border: 1px solid transparent;
  font-family: 'Space Grotesk', sans-serif;
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--fa-transition);
  white-space: nowrap;
}

.fa-btn:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.fa-btn-record {
  background: rgba(52, 211, 153, 0.12);
  border-color: var(--fa-border-accent);
  color: var(--fa-accent);
}

.fa-btn-record:hover:not(:disabled) {
  background: rgba(52, 211, 153, 0.22);
  box-shadow: 0 0 0 2px var(--fa-accent-glow);
}

.fa-btn-record i { color: #f87171; }

.fa-btn-stop {
  background: rgba(248, 113, 113, 0.1);
  border-color: rgba(248, 113, 113, 0.3);
  color: #f87171;
}

.fa-btn-stop:hover:not(:disabled) {
  background: rgba(248, 113, 113, 0.2);
}

.fa-btn-submit {
  width: 100%;
  justify-content: center;
  background: linear-gradient(135deg, #059669 0%, #34d399 100%);
  color: #020617;
  border: none;
  padding: .75rem 1.5rem;
  font-size: .925rem;
  border-radius: var(--fa-radius-sm);
  box-shadow: 0 2px 12px rgba(52, 211, 153, 0.25);
}

.fa-btn-submit:hover:not(:disabled) {
  box-shadow: 0 4px 20px rgba(52, 211, 153, 0.4);
  transform: translateY(-1px);
}

/* ── Playback ─────────────────────────────────────────────────────────────── */
.fa-playback-wrap {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.fa-playback-label {
  font-size: .78rem;
  color: var(--fa-text-dim);
  font-family: 'IBM Plex Mono', monospace;
  text-transform: uppercase;
  letter-spacing: .07em;
  margin: 0;
}

.fa-audio-player {
  width: 100%;
  border-radius: var(--fa-radius-sm);
  accent-color: var(--fa-accent);
}

/* ── Upload section ───────────────────────────────────────────────────────── */
.fa-upload-section {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.fa-upload-divider {
  display: flex;
  align-items: center;
  gap: .75rem;
  color: var(--fa-text-dim);
  font-size: .8rem;
}

.fa-upload-divider::before,
.fa-upload-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--fa-border);
}

.fa-upload-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
  padding: 1rem;
  border-radius: var(--fa-radius-sm);
  border: 1px dashed var(--fa-border);
  cursor: pointer;
  color: var(--fa-text-muted);
  font-size: .875rem;
  text-align: center;
  transition: all var(--fa-transition);
}

.fa-upload-label:hover {
  border-color: var(--fa-border-accent);
  background: var(--fa-accent-glow);
  color: var(--fa-accent);
}

.fa-upload-label i {
  font-size: 1.1rem;
  color: var(--fa-accent);
}

.fa-upload-hint {
  font-size: .72rem;
  color: var(--fa-text-dim);
}

.fa-file-input-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.fa-upload-chosen {
  font-size: .8rem;
  color: var(--fa-accent);
  font-family: 'IBM Plex Mono', monospace;
  margin: 0;
  word-break: break-all;
}

/* ── Status row ───────────────────────────────────────────────────────────── */
.fa-status-row {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .82rem;
}

.fa-status-pill {
  display: inline-block;
  padding: .15rem .55rem;
  border-radius: 99px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: rgba(148, 163, 184, .12);
  color: var(--fa-text-muted);
  border: 1px solid var(--fa-border);
}

.fa-status-idle     { background: rgba(148,163,184,.1);  color: var(--fa-text-dim); }
.fa-status-rec      { background: rgba(248,113,113,.12); color: #f87171; border-color: rgba(248,113,113,.3); }
.fa-status-ready    { background: rgba(52,211,153,.1);   color: var(--fa-accent);   border-color: var(--fa-border-accent); }
.fa-status-uploading{ background: rgba(56,189,248,.1);   color: var(--fa-blue);     border-color: rgba(56,189,248,.3); }
.fa-status-queued   { background: rgba(251,191,36,.1);   color: #fbbf24;            border-color: rgba(251,191,36,.3); }
.fa-status-processing{ background:rgba(56,189,248,.1);   color: var(--fa-blue);     border-color: rgba(56,189,248,.3); }
.fa-status-done     { background: rgba(52,211,153,.12);  color: var(--fa-accent);   border-color: var(--fa-border-accent); }
.fa-status-failed,
.fa-status-err      { background: rgba(248,113,113,.12); color: #f87171;            border-color: rgba(248,113,113,.3); }

.fa-status-text {
  color: var(--fa-text-muted);
}

/* ── Output panel ─────────────────────────────────────────────────────────── */
.fa-output-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .9rem;
  text-align: center;
  color: var(--fa-text-dim);
  padding: 2.5rem 1rem;
}

.fa-output-empty i {
  opacity: .35;
}

.fa-output-empty p {
  font-size: .9rem;
  line-height: 1.6;
  max-width: 280px;
  margin: 0;
}

.fa-output-results {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.fa-result-section {
  border-radius: var(--fa-radius-sm);
  background: var(--fa-surface-raised);
  border: 1px solid var(--fa-border);
  padding: 1rem 1.1rem;
}

.fa-result-section-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--fa-text-dim);
  margin-bottom: .6rem;
}

.fa-result-section-header i {
  color: var(--fa-accent);
  opacity: .7;
}

.fa-transcript-text {
  font-size: .9rem;
  color: var(--fa-text);
  line-height: 1.65;
  margin: 0;
  font-style: italic;
}

.fa-lang-text {
  font-size: .875rem;
  color: var(--fa-accent);
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin: 0;
}

.fa-reply-text {
  font-size: .9rem;
  color: var(--fa-text);
  line-height: 1.7;
  white-space: pre-wrap;
}

.fa-lang-chip {
  display: inline-block;
  padding: .15rem .55rem;
  border-radius: 99px;
  background: var(--fa-accent-glow);
  border: 1px solid var(--fa-border-accent);
  color: var(--fa-accent);
  font-size: .7rem;
  font-weight: 700;
  font-family: 'IBM Plex Mono', monospace;
  letter-spacing: .06em;
}

/* ── Pipeline indicator ───────────────────────────────────────────────────── */
.fa-pipeline {
  display: flex;
  align-items: center;
  gap: .25rem;
  flex-wrap: wrap;
  padding-top: .25rem;
}

.fa-pipeline-step {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .72rem;
  color: var(--fa-text-dim);
  font-family: 'IBM Plex Mono', monospace;
  padding: .2rem .5rem;
  border-radius: 99px;
  border: 1px solid var(--fa-border);
  transition: all var(--fa-transition);
}

.fa-pipeline-step i {
  font-size: .65rem;
}

.fa-pipe-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--fa-text-dim);
  flex-shrink: 0;
  margin-left: .15rem;
}

.fa-pipeline-step.fa-pipe-active {
  color: var(--fa-blue);
  border-color: rgba(56, 189, 248, .3);
  background: rgba(56, 189, 248, .08);
  animation: fa-pipe-pulse 1.4s ease-in-out infinite;
}

.fa-pipeline-step.fa-pipe-active .fa-pipe-dot {
  background: var(--fa-blue);
}

.fa-pipeline-step.fa-pipe-done {
  color: var(--fa-accent);
  border-color: var(--fa-border-accent);
  background: var(--fa-accent-glow);
}

.fa-pipeline-step.fa-pipe-done .fa-pipe-dot {
  background: var(--fa-accent);
}

@keyframes fa-pipe-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .55; }
}

/* ── Footer notice ────────────────────────────────────────────────────────── */
.fa-footer-notice {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  max-width: 1160px;
  margin: .5rem auto 2rem;
  padding: .9rem 1.25rem;
  border-radius: var(--fa-radius-sm);
  border: 1px solid rgba(251, 191, 36, .25);
  background: rgba(251, 191, 36, .06);
  font-size: .82rem;
  color: var(--fa-text-muted);
  line-height: 1.55;
}

.fa-footer-notice > i {
  color: #fbbf24;
  flex-shrink: 0;
  margin-top: .1rem;
}

.fa-footer-notice strong {
  color: #fbbf24;
}

/* ── Mobile compact layout (≤ 639px) ─────────────────────────────────────────
   Reduces vertical spacing so the Submit button stays inside the visible
   viewport without scrolling, even on the shortest Android handsets.
   ─────────────────────────────────────────────────────────────────────────── */
@media (max-width: 639px) {
  .fa-panel {
    padding: 0.9rem 1rem;
    gap: 0.65rem;
  }

  .fa-control-grid {
    grid-template-columns: 1fr;
  }

  .fa-segment {
    min-height: 44px;
  }

  .fa-visualiser-wrap {
    height: 56px;               /* down from 90px */
  }

  .fa-timer-row {
    margin: 0;
  }

  .fa-controls-row {
    gap: 0.5rem;
  }

  .fa-pipeline {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    width: 100%;
  }

  .fa-pipeline-step {
    flex: 1 1 auto;
    min-width: 0;
  }
}