/* ============================================================
   JWT Payload Debugger — Styles
   Theme: Dark — deep slate with amber alert accents
   ============================================================ */

:root {
  --c-bg: #0f1219;
  --c-surface: #161b26;
  --c-surface-2: #1c2333;
  --c-border: #252d3d;
  --c-border-focus: #f59e0b;
  --c-primary: #f59e0b;
  --c-primary-dim: rgba(245, 158, 11, 0.12);
  --c-secondary: #3b82f6;
  --c-secondary-dim: rgba(59, 130, 246, 0.12);
  --c-success: #22c55e;
  --c-success-dim: rgba(34, 197, 94, 0.12);
  --c-danger: #ef4444;
  --c-danger-dim: rgba(239, 68, 68, 0.12);
  --c-warning: #f59e0b;
  --c-text: #e2e8f0;
  --c-text-dim: #94a3b8;
  --c-text-muted: #64748b;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --glass: rgba(22, 27, 38, 0.75);
  --glass-border: rgba(37, 45, 61, 0.6);
}

/* Light theme */
[data-theme="light"] {
  --c-bg: #f8fafc;
  --c-surface: #ffffff;
  --c-surface-2: #f1f5f9;
  --c-border: #e2e8f0;
  --c-text: #1e293b;
  --c-text-dim: #475569;
  --c-text-muted: #94a3b8;
  --glass: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(226, 232, 240, 0.8);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 3px; }
::selection { background: var(--c-primary-dim); color: var(--c-primary); }
:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; }

/* ---------- Header ---------- */
#app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo-group { display: flex; align-items: center; gap: 0.75rem; }

.logo-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--c-primary-dim);
  color: var(--c-primary);
}

h1 {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-primary), #d97706);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-actions { display: flex; gap: 0.5rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  font-family: var(--font-sans);
  border: none;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--c-primary), #d97706);
  color: #0f1219;
  font-weight: 600;
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3); }

.btn-outline {
  background: transparent;
  color: var(--c-text-dim);
  border: 1px solid var(--c-border);
}
.btn-outline:hover { border-color: var(--c-primary); color: var(--c-primary); background: var(--c-primary-dim); }

.btn-ghost { background: transparent; color: var(--c-text-dim); }
.btn-ghost:hover { color: var(--c-text); background: rgba(255,255,255,0.05); }

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  background: transparent;
  color: var(--c-text-dim);
  border: 1px solid var(--c-border);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-icon:hover { border-color: var(--c-primary); color: var(--c-primary); }

.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.75rem; }

/* ---------- Main ---------- */
#app-main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ---------- Input Section ---------- */
#input-section { display: flex; flex-direction: column; gap: 0.5rem; }

.input-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--c-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.input-label-sm {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--c-text-dim);
  margin-bottom: 0.35rem;
}

.code-textarea {
  width: 100%;
  min-height: 100px;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  resize: vertical;
  transition: border-color var(--transition);
  word-break: break-all;
}
.code-textarea::placeholder { color: var(--c-text-muted); }
.code-textarea:focus { border-color: var(--c-primary); outline: none; }

.input-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.token-status {
  font-size: 0.8125rem;
  font-weight: 500;
}
.token-status.valid { color: var(--c-success); }
.token-status.invalid { color: var(--c-danger); }
.token-status.expired { color: var(--c-warning); }

/* ---------- Panels ---------- */
.panel-card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: background var(--transition), border-color var(--transition);
}

.panel-card h2 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.panel-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}
.panel-title-row h2 { margin-bottom: 0; }

.hidden { display: none !important; }

/* ---------- Decoded Grid ---------- */
.decoded-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.decoded-grid > :last-child { grid-column: 1 / -1; }

/* ---------- JSON Output ---------- */
.json-output {
  padding: 1rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--c-text);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

/* JSON syntax highlight */
.json-key { color: #818cf8; }
.json-string { color: #22c55e; }
.json-number { color: #f59e0b; }
.json-bool { color: #06b6d4; }
.json-null { color: var(--c-text-muted); }

/* ---------- Algorithm Info ---------- */
.algo-info {
  margin-top: 0.75rem;
  padding: 0.75rem;
  background: var(--c-secondary-dim);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-xs);
  font-size: 0.8125rem;
  color: var(--c-text-dim);
  line-height: 1.5;
}
.algo-info strong { color: var(--c-secondary); }

/* ---------- Claims List ---------- */
.claims-list {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.claim-item {
  display: flex;
  gap: 0.75rem;
  padding: 0.5rem 0.65rem;
  background: var(--c-surface);
  border-radius: var(--radius-xs);
  font-size: 0.8125rem;
}

.claim-key {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--c-primary);
  min-width: 48px;
}

.claim-desc {
  color: var(--c-text-dim);
  flex: 1;
}

.claim-value {
  font-family: var(--font-mono);
  color: var(--c-text);
  text-align: right;
  word-break: break-all;
  max-width: 200px;
}

/* ---------- Expiry Section ---------- */
.expiry-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.expiry-icon { font-size: 2rem; }

.expiry-content h2 {
  font-size: 0.75rem;
  margin-bottom: 0.25rem;
}

.expiry-countdown {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.expiry-countdown.valid { color: var(--c-success); }
.expiry-countdown.warning { color: var(--c-warning); }
.expiry-countdown.expired { color: var(--c-danger); }

/* ---------- Signature ---------- */
.signature-raw {
  padding: 0.75rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-text-muted);
  word-break: break-all;
  margin-bottom: 1rem;
}

.verify-section {
  border-top: 1px solid var(--c-border);
  padding-top: 0.75rem;
}

.verify-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.text-input {
  flex: 1;
  min-width: 160px;
  padding: 0.45rem 0.75rem;
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--c-text);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-xs);
  transition: border-color var(--transition);
}
.text-input::placeholder { color: var(--c-text-muted); }
.text-input:focus { border-color: var(--c-primary); outline: none; }

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: var(--c-text-dim);
  cursor: pointer;
  white-space: nowrap;
}

.verify-result {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
}
.verify-result.valid { color: var(--c-success); }
.verify-result.invalid { color: var(--c-danger); }

/* ---------- Toast ---------- */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 1000;
}

.toast {
  padding: 0.6rem 1rem;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  box-shadow: var(--shadow);
  animation: toastIn 300ms ease;
  max-width: 320px;
}
.toast.success { border-color: rgba(34, 197, 94, 0.4); }
.toast.error { border-color: rgba(239, 68, 68, 0.4); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateY(12px) scale(0.95); }
}

/* ---------- Responsive ---------- */
@media (max-width: 700px) {
  .decoded-grid { grid-template-columns: 1fr; }
  .decoded-grid > :last-child { grid-column: 1; }
  .header-inner { padding: 0.5rem 1rem; }
  h1 { font-size: 1rem; }
  #app-main { padding: 1rem; }
  .verify-row { flex-direction: column; align-items: stretch; }
  .expiry-countdown { font-size: 1.25rem; }
}