/* =============================================================
   AI Content Brief Workflow — styles.css
   ============================================================= */

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

:root {
  --color-bg-primary:    #ffffff;
  --color-bg-secondary:  #f5f5f3;
  --color-bg-tertiary:   #efede8;
  --color-text-primary:  #1a1a18;
  --color-text-secondary:#5f5e5a;
  --color-border-tertiary:  rgba(0,0,0,0.12);
  --color-border-secondary: rgba(0,0,0,0.22);
  --color-border-primary:   rgba(0,0,0,0.35);
  --radius-md: 8px;
  --radius-lg: 12px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "Fira Code", monospace;

  /* Quality score colours */
  --quality-color-high:   #639922;
  --quality-color-medium: #b07d10;
  --quality-color-low:    #a32d2d;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-primary:    #1c1c1a;
    --color-bg-secondary:  #252522;
    --color-bg-tertiary:   #2c2c2a;
    --color-text-primary:  #f0ede6;
    --color-text-secondary:#9a9890;
    --color-border-tertiary:  rgba(255,255,255,0.10);
    --color-border-secondary: rgba(255,255,255,0.18);
    --color-border-primary:   rgba(255,255,255,0.30);

    --quality-color-high:   #3B6D11;
    --quality-color-medium: #7d5a0a;
    --quality-color-low:    #791f1f;
  }
}

/* ── Base ──────────────────────────────────────────────────────── */

body {
  font-family: var(--font-sans);
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  min-height: 100vh;
  padding: 2rem 1rem;
}

.container {
  max-width: 860px;
  margin: 0 auto;
}

/* ── Header ──────────────────────────────────────────────────────*/

.header { margin-bottom: 2rem; }

.header h1 {
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 4px;
}

.header p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* ── Pipeline tracker ────────────────────────────────────────────*/

.pipeline-track {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 1.75rem;
  overflow-x: auto;
  padding-bottom: 4px;
}

.stage-node {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.node-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  border: 0.5px solid var(--color-border-secondary);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  transition: all 0.3s;
  white-space: nowrap;
  user-select: none;
}

.node-pill.active { background: #E6F1FB; color: #0C447C; border-color: #85B7EB; }
.node-pill.done   { background: #EAF3DE; color: #27500A; border-color: #97C459; }
.node-pill.error  { background: #FCEBEB; color: #791F1F; border-color: #F09595; }

@media (prefers-color-scheme: dark) {
  .node-pill.active { background: #0C447C; color: #B5D4F4; border-color: #185FA5; }
  .node-pill.done   { background: #27500A; color: #C0DD97; border-color: #3B6D11; }
  .node-pill.error  { background: #791F1F; color: #F7C1C1; border-color: #A32D2D; }
}

.node-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.6;
}

.connector {
  width: 28px;
  height: 1px;
  background: var(--color-border-secondary);
  flex-shrink: 0;
}

/* ── Input section ───────────────────────────────────────────────*/

.input-section {
  background: var(--color-bg-primary);
  border: 0.5px solid var(--color-border-tertiary);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.input-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.input-group { flex: 1; }

.input-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 7px;
}

label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
}

.char-counter {
  font-size: 11px;
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.char-counter.warn { color: #b07d10; }
.char-counter.over { color: #a32d2d; }

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 9px 12px;
  border: 0.5px solid var(--color-border-secondary);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-size: 14px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus,
input[type="password"]:focus {
  border-color: #378ADD;
  box-shadow: 0 0 0 3px rgba(55,138,221,0.15);
}

.btn-run {
  padding: 9px 22px;
  background: #185FA5;
  color: #E6F1FB;
  border: none;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  font-family: var(--font-sans);
  transition: background 0.2s, transform 0.1s;
}

.btn-run:hover   { background: #0C447C; }
.btn-run:active  { transform: scale(0.98); }
.btn-run:disabled {
  background: var(--color-border-secondary);
  color: var(--color-text-secondary);
  cursor: not-allowed;
  transform: none;
}

.examples {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.examples-label {
  font-size: 11px;
  color: var(--color-text-secondary);
}

.example-chip {
  padding: 3px 10px;
  border: 0.5px solid var(--color-border-secondary);
  border-radius: 12px;
  font-size: 11px;
  color: var(--color-text-secondary);
  cursor: pointer;
  background: var(--color-bg-secondary);
  transition: all 0.15s;
  user-select: none;
}

.example-chip:hover {
  background: #E6F1FB;
  color: #185FA5;
  border-color: #85B7EB;
}

@media (prefers-color-scheme: dark) {
  .example-chip:hover {
    background: #0C447C;
    color: #B5D4F4;
    border-color: #185FA5;
  }
}

/* ── Stage cards ─────────────────────────────────────────────────*/

.stages-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 1.25rem;
}

@media (max-width: 520px) {
  .stages-grid { grid-template-columns: 1fr; }
  .input-row   { flex-direction: column; align-items: stretch; }
}

.stage-card {
  background: var(--color-bg-primary);
  border: 0.5px solid var(--color-border-tertiary);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  min-height: 130px;
  transition: border-color 0.3s;
}

.stage-card.active { border-color: #85B7EB; }
.stage-card.done   { border-color: #97C459; }
.stage-card.error  { border-color: #F09595; }

@media (prefers-color-scheme: dark) {
  .stage-card.active { border-color: #185FA5; }
  .stage-card.done   { border-color: #3B6D11; }
  .stage-card.error  { border-color: #A32D2D; }
}

.stage-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.stage-title {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
}

.stage-status {
  font-size: 11px;
  padding: 2px 9px;
  border-radius: 10px;
  font-weight: 500;
}

.status-idle    { background: var(--color-bg-secondary);   color: var(--color-text-secondary); }
.status-running { background: #E6F1FB; color: #185FA5; }
.status-done    { background: #EAF3DE; color: #3B6D11; }
.status-error   { background: #FCEBEB; color: #A32D2D; }

@media (prefers-color-scheme: dark) {
  .status-running { background: #0C447C; color: #B5D4F4; }
  .status-done    { background: #27500A; color: #C0DD97; }
  .status-error   { background: #791F1F; color: #F7C1C1; }
}

.stage-body {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-height: 130px;
  overflow-y: auto;
  white-space: pre-wrap;
}

.stage-body.populated { color: var(--color-text-primary); }

/* ── Pulse loader ────────────────────────────────────────────────*/

.pulse {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  padding: 6px 0;
}

.pulse span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #378ADD;
  animation: bounce 1.2s infinite ease-in-out;
}

.pulse span:nth-child(2) { animation-delay: 0.2s; }
.pulse span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 80%, 100% { transform: translateY(0);   opacity: 0.35; }
  40%            { transform: translateY(-5px); opacity: 1; }
}

/* ── Output section ──────────────────────────────────────────────*/

.output-section {
  background: var(--color-bg-primary);
  border: 0.5px solid var(--color-border-tertiary);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: none;
}

.output-section.visible { display: block; }

.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 0.5px solid var(--color-border-tertiary);
}

.output-title {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
}

.btn-copy {
  padding: 5px 14px;
  border: 0.5px solid var(--color-border-secondary);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 12px;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.2s;
}

.btn-copy:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.output-body {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-primary);
  white-space: pre-wrap;
  font-family: var(--font-mono);
}

/* ── Quality bar ─────────────────────────────────────────────────*/

.quality-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 0.5px solid var(--color-border-tertiary);
}

.quality-label {
  font-size: 12px;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.quality-track {
  flex: 1;
  height: 4px;
  background: var(--color-bg-secondary);
  border-radius: 2px;
  overflow: hidden;
}

.quality-fill {
  height: 100%;
  border-radius: 2px;
  width: 0;
  transition: width 0.9s cubic-bezier(0.4, 0, 0.2, 1),
              background-color 0.5s ease;
  background: var(--quality-color-high);
}

/* Dynamic score colours — applied by JS */
.quality-fill--high   { background: var(--quality-color-high); }
.quality-fill--medium { background: var(--quality-color-medium); }
.quality-fill--low    { background: var(--quality-color-low); }

.quality-score {
  font-size: 13px;
  font-weight: 500;
  min-width: 42px;
  text-align: right;
  transition: color 0.5s ease;
}

.quality-score--high   { color: var(--quality-color-high); }
.quality-score--medium { color: var(--quality-color-medium); }
.quality-score--low    { color: var(--quality-color-low); }

/* ── API key modal ───────────────────────────────────────────────*/

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
  backdrop-filter: blur(3px);
}

.modal-overlay.hidden { display: none; }

.modal-box {
  background: var(--color-bg-primary);
  border: 0.5px solid var(--color-border-secondary);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  width: 100%;
  max-width: 420px;
}

.modal-box h2 {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 6px;
}

.modal-box p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.modal-box p a {
  color: #185FA5;
  text-decoration: none;
}

.modal-box p a:hover { text-decoration: underline; }

.key-input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.key-input-row input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 13px;
}

.btn-save-key {
  padding: 9px 18px;
  background: #185FA5;
  color: #E6F1FB;
  border: none;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background 0.2s;
  white-space: nowrap;
}

.btn-save-key:hover { background: #0C447C; }

.modal-error {
  font-size: 12px;
  color: #a32d2d;
  min-height: 18px;
  margin-bottom: 4px;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 0.5px solid var(--color-border-tertiary);
}

.modal-footer span {
  font-size: 11px;
  color: var(--color-text-secondary);
}

/* ── Settings button (top-right of header) ───────────────────────*/

.header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.btn-settings {
  padding: 5px 12px;
  border: 0.5px solid var(--color-border-secondary);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 12px;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.2s;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-settings:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}