:root {
  --bg: #ffffff;
  --surface: #f3f3f3;
  --surface2: #e8e8e8;
  --border: #d9d9d9;
  --magenta: #E20074;
  --magenta-dim: #B0005C;
  --magenta-dark: #fce8f3;
  --magenta-glow: rgba(226,0,116,0.12);
  --red: #cc0000;
  --red-dim: #990000;
  --amber: #9e5c00;
  --amber-dim: #7a4700;
  --yellow: #dfc412;
  --cyan: #005f87;
  --cyan-dim: #004466;
  --text: #1a1a1a;
  --text-dim: #4b4b4b;
  --text-muted: #b0b0b0;
  --font-mono: 'Share Tech Mono', monospace;
  --font-display: 'Orbitron', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  min-height: 100vh;
  overflow-x: hidden;
}


/* Header */
header {
  border-bottom: 1px solid var(--magenta-dark);
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  position: relative;
  overflow: hidden;
}
header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--magenta), transparent);
}

.logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  color: var(--magenta);
  letter-spacing: 3px;
  text-transform: uppercase;
  text-shadow: 0 0 20px var(--magenta-glow);
}
.logo span { color: var(--cyan); }

.status-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 11px;
  color: var(--text-dim);
}
.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
}
.dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
}
.dot.active { background: var(--magenta); box-shadow: 0 0 6px var(--magenta); }
.dot.error { background: var(--red); box-shadow: 0 0 6px var(--red); }
.dot.warn { background: var(--amber); box-shadow: 0 0 6px var(--amber); }

/* Layout */
.app { display: grid; grid-template-columns: 340px 1fr; min-height: calc(100vh - 73px); }

/* Config panel */
.config-panel {
  background: var(--surface);
  border-right: 1px solid var(--magenta-dark);
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel-title {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--magenta);
  text-transform: uppercase;
  border-bottom: 1px solid var(--magenta-dark);
  padding-bottom: 8px;
  margin-bottom: 4px;
}

/* Preset selector */
.preset-bar {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.preset-select-row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.preset-select-row select {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--magenta-dark);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 7px 10px;
  outline: none;
  appearance: none;
  cursor: pointer;
  transition: border-color 0.2s;
}
.preset-select-row select:focus { border-color: var(--magenta-dim); box-shadow: 0 0 8px var(--magenta-glow); }
.preset-hint { font-size: 12px; color: var(--text-muted); }

.field-group { display: flex; flex-direction: column; gap: 14px; }

.field label {
  display: block;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 5px;
}

.field input, .field select, .field textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--magenta-dark);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 8px 10px;
  outline: none;
  transition: border-color 0.2s;
  border-radius: 0;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--magenta-dim);
  box-shadow: 0 0 8px var(--magenta-glow);
}
.field select { appearance: none; cursor: pointer; }
.field textarea { resize: vertical; min-height: 60px; }

/* Main panel */
.main-panel {
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

/* Flow steps */
.flow-header {
  padding: 20px 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--magenta-dark);
  display: flex;
  align-items: center;
  gap: 0;
}

/* ── Step nodes ─────────────────────────────────────────────── */
.step-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  cursor: pointer;
  flex: 1;
  position: relative;
  transition: filter 0.2s;
}
/* connector line between steps */
.step-node::after {
  content: '';
  position: absolute;
  top: 22px;
  left: calc(50% + 18px);
  right: calc(-50% + 18px);
  height: 2px;
  background: var(--border);
}
.step-node:last-child::after { display: none; }
.step-node.done::after { background: var(--magenta-dim); }

.step-num {
  font-family: var(--font-display);
  font-size: 8px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 1px;
  line-height: 1;
}
.step-node.active .step-num  { color: var(--magenta); }
.step-node.done .step-num    { color: var(--magenta-dim); }

.step-icon {
  width: 36px; height: 36px;
  border: 2px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  background: var(--surface);
  position: relative;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.step-node.active .step-icon {
  border-color: var(--magenta);
  background: var(--magenta-dark);
  box-shadow: 0 0 0 3px var(--magenta-glow), 0 2px 8px var(--magenta-glow);
}
.step-node.done .step-icon {
  border-color: var(--magenta-dim);
  background: var(--magenta-dark);
}
.step-node.locked {
  cursor: not-allowed;
  filter: grayscale(0.6) opacity(0.55);
}
.step-node.locked .step-icon {
  border-style: dashed;
  border-color: var(--border);
  background: var(--surface2);
}

.step-label {
  font-size: 9px;
  letter-spacing: 1px;
  color: var(--text-dim);
  text-align: center;
  text-transform: uppercase;
  font-weight: 600;
}
.step-node.active .step-label { color: var(--magenta); }
.step-node.locked .step-label { color: var(--text-muted); font-weight: normal; }

/* Action area */
.action-area { flex: 1; padding: 24px 28px; overflow-y: auto; }

.card {
  background: var(--surface);
  border: 1px solid var(--magenta-dark);
  padding: 20px 22px;
  margin-bottom: 16px;
  position: relative;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 2px;
  background: var(--magenta-dark);
}
.card.active::before { background: var(--magenta); box-shadow: 0 0 8px var(--magenta); }
.card.error::before { background: var(--red); }
.card.success::before { background: var(--magenta); }

/* Prereq warning banner */
.prereq-banner {
  background: rgba(255,165,0,0.08);
  border: 1px solid var(--amber-dim);
  border-left: 3px solid var(--amber);
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: 11px;
  color: var(--amber);
  display: none;
  line-height: 1.6;
}
.prereq-banner.visible { display: block; }

.card-title {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--magenta);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-title .badge {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 2px 6px;
  background: var(--magenta-dark);
  color: var(--magenta);
  letter-spacing: 1px;
}

/* Buttons */
.btn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 10px 20px;
  border: 1px solid;
  cursor: pointer;
  transition: all 0.15s;
  background: transparent;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary {
  border-color: var(--magenta);
  color: var(--magenta);
}
.btn-primary:hover {
  background: var(--magenta);
  color: var(--bg);
  box-shadow: 0 0 20px var(--magenta-glow);
}
.btn-danger {
  border-color: var(--red);
  color: var(--red);
}
.btn-danger:hover {
  background: var(--red);
  color: var(--bg);
  box-shadow: 0 0 20px rgba(255,51,51,0.4);
}
.btn-warn {
  border-color: var(--amber);
  color: var(--amber);
}
.btn-warn:hover {
  background: var(--amber);
  color: var(--bg);
  box-shadow: 0 0 20px rgba(255,165,0,0.4);
}
.btn-cyan {
  border-color: var(--cyan);
  color: var(--cyan);
}
.btn-cyan:hover {
  background: var(--cyan);
  color: var(--bg);
  box-shadow: 0 0 20px rgba(0,212,255,0.4);
}
.btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

/* Data display */
.data-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 10px;
}
.data-item {
  background: var(--surface2);
  border: 1px solid var(--magenta-dark);
  padding: 8px 10px;
}
.data-item .key {
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 3px;
}
.data-item .val {
  font-size: 11px;
  color: var(--cyan);
  word-break: break-all;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}
.data-item .val.multiline {
  white-space: normal;
  overflow: visible;
  text-overflow: unset;
}

.token-box {
  background: var(--surface2);
  border: 1px solid var(--magenta-dark);
  padding: 10px 12px;
  font-size: 10px;
  color: var(--text-dim);
  word-break: break-all;
  line-height: 1.5;
  margin-top: 8px;
  max-height: 80px;
  overflow-y: auto;
  cursor: pointer;
  transition: border-color 0.2s;
}
.token-box:hover { border-color: var(--magenta-dim); }
.token-box span { color: var(--magenta); }

.userinfo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px;
  margin-top: 10px;
}

/* Log / terminal */
.log-panel {
  border-top: 1px solid var(--magenta-dark);
  background: var(--surface);
  height: 500px;
  display: flex;
  flex-direction: column;
}
.log-header {
  padding: 8px 16px;
  border-bottom: 1px solid var(--magenta-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.log-title {
  font-family: var(--font-display);
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--text-dim);
  text-transform: uppercase;
}
.log-clear {
  font-size: 9px;
  letter-spacing: 1px;
  color: var(--magenta);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-mono);
  text-transform: uppercase;
}
.log-clear:hover { color: var(--text-dim); }
.log-entries {
  flex: 1;
  overflow-y: auto;
  padding: 10px 16px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.log-entry {
  font-size: 11px;
  display: flex;
  gap: 10px;
  line-height: 1.4;
}
.log-entry .ts { color: var(--text-muted); flex-shrink: 0; }
.log-entry.info .msg { color: var(--text-dim); }
.log-entry.ok .msg { color: var(--magenta); }
.log-entry.err .msg { color: white; background-color: var(--red); }
.log-entry.warn .msg { background-color: var(--yellow); }
.log-entry.data .msg { color: var(--cyan); }

/* Decoded token viewer */
.jwt-section { margin-top: 14px; }
.jwt-part {
  margin-bottom: 8px;
  background: var(--surface2);
  border: 1px solid var(--magenta-dark);
  padding: 8px 12px;
}
.jwt-part-label {
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.jwt-part pre {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.5;
}

/* PKCE section */
.pkce-display {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 10px;
}

/* Tabs */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--magenta-dark); margin-bottom: 16px; }
.tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 16px;
  cursor: pointer;
  transition: all 0.15s;
}
.tab-btn.active {
  color: var(--magenta);
  border-bottom-color: var(--magenta);
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Misc */
.hint {
  font-size: 10px;
  color: var(--text-dim);
  margin-top: 8px;
  line-height: 1.6;
}
.hint a { color: var(--magenta-dim); text-decoration: none; }
.separator {
  border: none;
  border-top: 1px solid var(--magenta-dark);
  margin: 16px 0;
}

@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }
.loading { animation: pulse 1s infinite; color: var(--amber); }

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--magenta-dark); }
::-webkit-scrollbar-thumb:hover { background: var(--magenta-dim); }

/* ── Config toggle (mobile only, hidden on desktop) ───────────── */
.config-toggle-bar {
  display: none;
}

/* ── Responsive: Tablet (≤1024px) ────────────────────────────── */
@media (max-width: 1024px) {
  .app { grid-template-columns: 280px 1fr; }
  .logo { font-size: 18px; letter-spacing: 2px; }
}

/* ── Responsive: Mobile (≤768px) ─────────────────────────────── */
@media (max-width: 768px) {

  /* Header */
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 16px;
  }
  .logo { font-size: 15px; letter-spacing: 1px; }
  .status-bar { gap: 12px; flex-wrap: wrap; font-size: 10px; }

  /* App: stack config above main */
  html, body { overflow-x: hidden; max-width: 100vw; }
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    max-width: 100vw;
    overflow: hidden;
  }
  /* Grid cells must not expand beyond 1fr */
  .config-panel, .main-panel { min-width: 0; max-width: 100%; }

  /* Config panel: collapsed by default, toggle reveals it */
  .config-panel {
    border-right: none;
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    padding-top: 0;
    padding-bottom: 0;
    transition: max-height 0.35s ease, padding 0.35s ease;
  }
  .config-panel.mobile-open {
    max-height: 3000px;
    padding-top: 20px;
    padding-bottom: 20px;
  }

  /* Toggle bar — shown only on mobile */
  .config-toggle-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-dim);
  }
  .config-toggle-btn {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 1px solid var(--magenta);
    color: var(--magenta);
    background: transparent;
    padding: 6px 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .config-toggle-btn:active { background: var(--magenta-dark); }

  /* Flow header: horizontal scroll rail */
  .flow-header {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 14px 12px;
    gap: 0;
    scroll-snap-type: x proximity;
  }
  .step-node {
    min-width: 68px;
    scroll-snap-align: center;
  }
  /* hide long connector on mobile — handled by CSS line anyway */
  .step-node::after { right: calc(-50% + 14px); }

  /* Action & log area */
  .action-area { padding: 14px 12px; }
  .log-panel { height: 220px; }

  /* Data grids: single column */
  .data-grid { grid-template-columns: 1fr; }
  .userinfo-grid { grid-template-columns: 1fr; }

  /* Buttons: full width */
  .btn-row { flex-direction: column; }
  .btn-row .btn { width: 100%; justify-content: center; }

  /* Cards */
  .card { padding: 14px 14px; }

  /* Token box */
  .token-box { max-height: 100px; }

  /* JWT parts */
  .jwt-part pre { font-size: 10px; }
}