/* ── DESIGN TOKENS ─────────────────────────────────────── */
:root {
  --primary:       #4f46e5;
  --primary-light: #818cf8;
  --primary-dark:  #3730a3;
  --sidebar-bg:    #0f172a;
  --sidebar-text:  #94a3b8;
  --sidebar-hover: #1e293b;
  --bg:            #f1f5f9;
  --surface:       #ffffff;
  --border:        #e2e8f0;
  --text:          #1e293b;
  --text-muted:    #64748b;
  --success:       #10b981;
  --error:         #ef4444;
  --warning:       #f59e0b;
  --info:          #3b82f6;
  --code-bg:       #0f172a;
  --radius:        8px;
  --shadow:        0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:     0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
}

/* ── RESET ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; font-family: system-ui, -apple-system, sans-serif; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; outline: none; font-family: inherit; }
input, select, textarea { font-family: inherit; outline: none; border: 1px solid var(--border); border-radius: 6px; }

/* ── LAYOUT ─────────────────────────────────────────────── */
#app { display: grid; grid-template-columns: 240px 1fr; height: 100vh; overflow: hidden; }

#sidebar {
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  border-right: 1px solid rgba(255,255,255,.05);
}

#main {
  background: var(--bg);
  overflow-y: auto;
}

/* ── SIDEBAR ─────────────────────────────────────────────── */
.sidebar-header {
  padding: 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.sidebar-logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { font-size: 24px; }
.logo-title { color: #f1f5f9; font-weight: 700; font-size: 15px; }
.logo-sub   { color: var(--sidebar-text); font-size: 11px; }

.sidebar-nav { flex: 1; padding: 8px 0; }

.nav-section {
  color: #475569;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 16px 20px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: var(--sidebar-text);
  font-size: 13.5px;
  transition: background .15s, color .15s;
  border-radius: 0;
}
.nav-item:hover { background: var(--sidebar-hover); color: #e2e8f0; }
.nav-item.active { background: rgba(79,70,229,.25); color: var(--primary-light); }
.nav-icon { font-size: 15px; width: 20px; text-align: center; }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,.06);
}

.auth-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--sidebar-text);
  margin-bottom: 10px;
}
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-dot--on  { background: var(--success); box-shadow: 0 0 0 2px rgba(16,185,129,.2); }
.status-dot--off { background: #475569; }

.sidebar-links { display: flex; gap: 12px; }
.sidebar-links a {
  font-size: 11px;
  color: #475569;
  transition: color .15s;
}
.sidebar-links a:hover { color: var(--primary-light); }

/* ── PAGE CONTENT ────────────────────────────────────────── */
#content { max-width: 1100px; margin: 0 auto; padding: 28px 32px 60px; }

.page-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.page-sub {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* ── CONCEPT BOX ─────────────────────────────────────────── */
.concept-box {
  background: linear-gradient(135deg, #ede9fe, #dbeafe);
  border: 1px solid #c7d2fe;
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 24px;
  font-size: 13.5px;
  color: #3730a3;
  line-height: 1.6;
}
.concept-box strong { font-weight: 600; }
.concept-box code {
  background: rgba(79,70,229,.1);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 12px;
  font-family: monospace;
}

/* ── CARDS ────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}
.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── GRID LAYOUTS ────────────────────────────────────────── */
.demo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.demo-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.triple-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.full-width { grid-column: 1 / -1; }

/* ── FORM CONTROLS ───────────────────────────────────────── */
.form-row { margin-bottom: 12px; }
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.form-input {
  width: 100%;
  padding: 8px 11px;
  font-size: 13.5px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color .15s, box-shadow .15s;
}
.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}
.form-select {
  width: 100%;
  padding: 8px 11px;
  font-size: 13.5px;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
}

/* ── BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  transition: all .15s;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg); }
.btn-danger {
  background: var(--error);
  color: #fff;
}
.btn-danger:hover { background: #dc2626; }
.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-warning { background: var(--warning); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-block { width: 100%; }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }
.btn-loading::after {
  content: '';
  display: inline-block;
  width: 12px; height: 12px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
  margin-left: 4px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── RESPONSE VIEWER ─────────────────────────────────────── */
.response-viewer {
  background: var(--code-bg);
  border-radius: var(--radius);
  overflow: hidden;
}
.response-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(255,255,255,.04);
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.response-label {
  font-size: 11px;
  color: #64748b;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.response-body {
  padding: 14px;
  font-family: 'Menlo', 'Monaco', monospace;
  font-size: 12px;
  line-height: 1.6;
  color: #94a3b8;
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 80px;
  max-height: 400px;
  overflow-y: auto;
}
.response-placeholder {
  color: #334155;
  font-style: italic;
}

/* JSON syntax */
.json-key    { color: #93c5fd; }
.json-string { color: #86efac; }
.json-number { color: #fbbf24; }
.json-bool   { color: #f9a8d4; }
.json-null   { color: #94a3b8; }

/* ── STATUS BADGE ─────────────────────────────────────────── */
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 11.5px;
  font-weight: 700;
  font-family: monospace;
}
.status-2xx { background: rgba(16,185,129,.15); color: var(--success); }
.status-3xx { background: rgba(59,130,246,.15); color: var(--info); }
.status-4xx { background: rgba(239,68,68,.15);  color: var(--error); }
.status-5xx { background: rgba(239,68,68,.15);  color: var(--error); }
.status-429 { background: rgba(245,158,11,.15); color: var(--warning); }

/* ── JWT VISUALIZER ──────────────────────────────────────── */
.jwt-parts { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.jwt-part {
  padding: 4px 10px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 11px;
  word-break: break-all;
  max-width: 280px;
}
.jwt-header  { background: rgba(239,68,68,.15);  color: #fca5a5; }
.jwt-payload { background: rgba(16,185,129,.15); color: #6ee7b7; }
.jwt-sig     { background: rgba(59,130,246,.15); color: #93c5fd; }
.jwt-dot     { color: #64748b; font-size: 18px; font-weight: 700; }

.jwt-decoded { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.jwt-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.jwt-header-label  { color: #fca5a5; }
.jwt-payload-label { color: #6ee7b7; }
.jwt-sig-label     { color: #93c5fd; }

/* ── RATE LIMIT METER ────────────────────────────────────── */
.token-meter { margin: 10px 0; }
.token-track {
  height: 8px;
  background: #1e293b;
  border-radius: 99px;
  overflow: hidden;
}
.token-fill {
  height: 100%;
  border-radius: 99px;
  transition: width .4s ease, background .4s;
}
.token-fill--high   { background: var(--success); }
.token-fill--medium { background: var(--warning); }
.token-fill--low    { background: var(--error); }
.token-count {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: #64748b;
  margin-top: 4px;
}

/* ── CIRCUIT BREAKER ─────────────────────────────────────── */
.cb-diagram { display: flex; align-items: center; justify-content: center; gap: 0; margin: 16px 0; }
.cb-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 20px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  min-width: 120px;
  transition: all .3s;
  opacity: .35;
}
.cb-state.active { opacity: 1; }
.cb-state-closed.active  { border-color: var(--success); background: rgba(16,185,129,.08); }
.cb-state-open.active    { border-color: var(--error);   background: rgba(239,68,68,.08); }
.cb-state-half.active    { border-color: var(--warning); background: rgba(245,158,11,.08); }
.cb-state-icon { font-size: 26px; }
.cb-state-name { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.cb-state-closed .cb-state-name { color: var(--success); }
.cb-state-open   .cb-state-name { color: var(--error); }
.cb-state-half   .cb-state-name { color: var(--warning); }
.cb-state-desc { font-size: 11px; color: var(--text-muted); text-align: center; }

.cb-arrow { color: #475569; font-size: 20px; padding: 0 4px; }

.cb-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
.cb-stat {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 12px;
  text-align: center;
}
.cb-stat-value { font-size: 24px; font-weight: 700; }
.cb-stat-label { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.cb-log {
  background: var(--code-bg);
  border-radius: var(--radius);
  padding: 10px;
  max-height: 150px;
  overflow-y: auto;
  font-family: monospace;
  font-size: 11.5px;
}
.cb-log-entry { padding: 2px 0; display: flex; gap: 8px; }
.cb-log-time  { color: #475569; flex-shrink: 0; }
.cb-log-success { color: var(--success); }
.cb-log-failure { color: var(--error); }
.cb-log-fallback { color: var(--warning); }
.cb-log-open    { color: #f87171; }

/* ── PRODUCT GRID ─────────────────────────────────────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.product-name { font-weight: 600; font-size: 13px; color: var(--text); }
.product-category {
  font-size: 11px;
  color: var(--primary);
  background: rgba(79,70,229,.08);
  padding: 2px 7px;
  border-radius: 99px;
  display: inline-block;
  margin-bottom: 2px;
}
.product-price { font-size: 15px; font-weight: 700; color: var(--text); }
.product-stock { font-size: 11px; color: var(--text-muted); }

.pagination-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 0;
}
.pagination-info { font-size: 13px; color: var(--text-muted); }
.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  transition: all .15s;
}
.page-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-btn.current { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-btn:disabled { opacity: .4; cursor: not-allowed; }

.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; align-items: flex-end; }
.filter-bar .form-row { margin-bottom: 0; flex: 1; min-width: 120px; }

/* ── VERSIONING ───────────────────────────────────────────── */
.version-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.version-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 700;
}
.version-v1 { background: rgba(59,130,246,.12); color: var(--info); }
.version-v2 { background: rgba(79,70,229,.12); color: var(--primary); }

/* ── DASHBOARD CARDS ─────────────────────────────────────── */
.concept-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}
.concept-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  cursor: pointer;
  transition: all .2s;
  position: relative;
  overflow: hidden;
}
.concept-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.concept-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.concept-card-icon { font-size: 28px; margin-bottom: 10px; display: block; }
.concept-card-title { font-weight: 600; font-size: 14px; color: var(--text); margin-bottom: 5px; }
.concept-card-desc  { font-size: 12.5px; color: var(--text-muted); line-height: 1.5; }

/* ── CREDENTIALS TABLE ────────────────────────────────────── */
.cred-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.cred-table th {
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-muted);
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
.cred-table td { padding: 10px 10px; border-bottom: 1px solid var(--border); color: var(--text); }
.cred-table tr:last-child td { border-bottom: none; }
.cred-table code {
  background: var(--bg);
  padding: 2px 7px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 12px;
  color: var(--primary);
}

/* ── COMPARISON TABLE ─────────────────────────────────────── */
.comparison-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.comparison-table th {
  background: var(--bg);
  padding: 10px 14px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.comparison-table td {
  padding: 10px 14px;
  border: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.5;
}
.comparison-table td:first-child { font-weight: 600; background: var(--bg); color: var(--text); }
.pro  { color: var(--success); }
.con  { color: var(--error); }

/* ── INFO PILLS ───────────────────────────────────────────── */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  border-radius: 99px;
  font-size: 11.5px;
  font-weight: 500;
}
.tag-blue   { background: rgba(59,130,246,.1);  color: var(--info); }
.tag-green  { background: rgba(16,185,129,.1);  color: var(--success); }
.tag-red    { background: rgba(239,68,68,.1);   color: var(--error); }
.tag-yellow { background: rgba(245,158,11,.1);  color: var(--warning); }
.tag-purple { background: rgba(79,70,229,.1);   color: var(--primary); }

/* ── ALERTS ───────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 14px;
  display: flex;
  gap: 10px;
}
.alert-info    { background: #eff6ff; border: 1px solid #bfdbfe; color: #1d4ed8; }
.alert-warning { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; }
.alert-error   { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }

/* ── DIVIDER ──────────────────────────────────────────────── */
.divider { height: 1px; background: var(--border); margin: 16px 0; }

/* ── CODE INLINE ──────────────────────────────────────────── */
code {
  background: #f1f5f9;
  padding: 1px 6px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 12.5px;
  color: #7c3aed;
}

/* ── UTILITY ──────────────────────────────────────────────── */
.text-muted { color: var(--text-muted); }
.text-sm    { font-size: 12px; }
.text-xs    { font-size: 11px; }
.mt-8  { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mb-4  { margin-bottom: 4px; }
.mb-8  { margin-bottom: 8px; }
.flex  { display: flex; }
.items-center { align-items: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.justify-between { justify-content: space-between; }
.w-full { width: 100%; }

/* ── SCROLLBAR ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #334155; border-radius: 3px; }

/* ── HTTP METHOD COLORS (used in request viewer) ─────────── */
.method-get    { color: #86efac; font-weight: 700; }
.method-post   { color: #93c5fd; font-weight: 700; }
.method-put    { color: #fbbf24; font-weight: 700; }
.method-patch  { color: #fbbf24; font-weight: 700; }
.method-delete { color: #fca5a5; font-weight: 700; }
.method-badge  { font-family: monospace; font-size: 11px; font-weight: 700; background: rgba(255,255,255,.06); padding: 1px 7px; border-radius: 3px; }

/* ── REQUEST VIEWER ──────────────────────────────────────── */
.req-key { color: #93c5fd; }
.req-val { color: #cbd5e1; }

/* ── HTTP EXCHANGE (request | response side by side) ─────── */
.http-exchange {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

/* ── FLOW LABEL (separates concept from exchange) ─────────── */
.section-heading {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 20px 0 10px;
}

/* ── FADE IN ──────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
#content > * { animation: fadeIn .2s ease; }

/* ── SIM BLOCK ────────────────────────────────────────────── */
.sim-block { margin-bottom: 16px; }
.sim-block .response-viewer { margin-bottom: 0; border-bottom-left-radius: 0; border-bottom-right-radius: 0; }
.sim-block > div:last-child:not(:empty) {
  border: 1px solid rgba(255,255,255,.08);
  border-top: none;
  border-bottom-left-radius: var(--radius);
  border-bottom-right-radius: var(--radius);
  animation: fadeIn .25s ease;
}
.sim-sending {
  color: #94a3b8;
  font-style: italic;
  animation: pulse 1s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

/* ── COPY BUTTON FEEDBACK ─────────────────────────────────── */
.btn-copied { background: var(--success) !important; color: #fff !important; }

/* ── JWT INPUT AREA ──────────────────────────────────────── */
.jwt-input-area {
  width: 100%;
  padding: 10px 12px;
  font-family: 'Menlo', 'Monaco', monospace;
  font-size: 12px;
  background: var(--code-bg);
  color: #94a3b8;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  resize: vertical;
  min-height: 80px;
}
.jwt-input-area:focus { outline: none; border-color: var(--primary); }

/* ── COMMON PROBLEMS ─────────────────────────────────────── */
.problem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }