/* ===== Reset & Base ===== */

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

:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-input: #12141c;
  --border: #2a2d3a;
  --border-focus: #5b6eef;
  --text: #e1e4ed;
  --text-muted: #8b8fa3;
  --primary: #5b6eef;
  --primary-hover: #4a5cde;
  --secondary: #2ec4b6;
  --secondary-hover: #25a99d;
  --danger: #ef4444;
  --success: #22c55e;
  --warning: #f59e0b;
  --radius: 8px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

html {
  font-size: 15px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding-bottom: 60px; /* room for log panel */
}

/* ===== Header ===== */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.header-left h1 {
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tag {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--primary);
  color: #fff;
  padding: 0.15em 0.5em;
  border-radius: 4px;
  vertical-align: middle;
}

.subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.usage-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.3em 0.65em;
  border-radius: 20px;
}

.usage-badge.warning {
  color: var(--warning);
  border-color: var(--warning);
}

.usage-badge.danger {
  color: var(--danger);
  border-color: var(--danger);
}

/* ===== Buttons ===== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.55em 1.1em;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font);
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn-secondary {
  background: var(--secondary);
  color: #fff;
  border-color: var(--secondary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--secondary-hover);
}

.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}

.btn-outline:hover:not(:disabled) {
  color: var(--text);
  border-color: var(--text-muted);
}

.btn-sm {
  padding: 0.35em 0.75em;
  font-size: 0.75rem;
}

/* ===== Main / Card ===== */

main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.card-header h2 {
  font-size: 1rem;
  font-weight: 600;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.file-label {
  cursor: pointer;
}

.file-name {
  font-size: 0.75rem;
  color: var(--text-muted);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== Textarea ===== */

#doc-textarea {
  width: 100%;
  resize: vertical;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  transition: border-color 0.15s ease;
}

#doc-textarea:focus {
  outline: none;
  border-color: var(--border-focus);
}

#doc-textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

/* ===== Button Row ===== */

.button-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.spacer {
  flex: 1;
}

/* ===== Toast ===== */

.toast {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1.25rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  z-index: 1000;
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateY(0);
}

.toast[hidden] {
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
}

.toast.success {
  border-color: var(--success);
  color: var(--success);
}

.toast.error {
  border-color: var(--danger);
  color: var(--danger);
}

.toast.info {
  border-color: var(--primary);
  color: var(--primary);
}

/* ===== Modal ===== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  backdrop-filter: blur(4px);
}

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

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  max-width: 520px;
  width: 90%;
  text-align: center;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
}

.modal-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.modal h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.modal p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.modal-actions {
  margin-top: 1.25rem;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--bg);
  border-radius: 3px;
  margin-top: 1rem;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 3px;
  transition: width 0.4s ease;
  width: 0%;
}

.modal pre {
  text-align: left;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--text);
  max-height: 250px;
  overflow-y: auto;
  margin-top: 1rem;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Spinner animation for modal icon */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.modal-icon.spinning {
  animation: spin 1.2s linear infinite;
}

/* ===== API Log Panel ===== */

.api-log-panel {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  z-index: 800;
  transition: height 0.3s ease;
}

.api-log-panel.collapsed {
  height: 40px;
}

.api-log-panel.expanded {
  height: 300px;
}

.api-log-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid var(--border);
}

.api-log-toggle:hover {
  color: var(--text);
}

.log-count {
  font-size: 0.65rem;
  background: var(--primary);
  color: #fff;
  padding: 0.1em 0.45em;
  border-radius: 10px;
  min-width: 1.4em;
  text-align: center;
}

.arrow {
  margin-left: auto;
  transition: transform 0.3s ease;
}

.collapsed .arrow {
  transform: rotate(0deg);
}

.expanded .arrow {
  transform: rotate(180deg);
}

.api-log-body {
  display: none;
  height: calc(100% - 40px);
  flex-direction: column;
}

.expanded .api-log-body {
  display: flex;
}

.api-log-entries {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.7;
}

.log-entry {
  padding: 0.2rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.log-entry .log-method {
  font-weight: 700;
}

.log-entry .log-url {
  color: var(--text-muted);
}

.log-entry .log-status {
  font-weight: 700;
}

.log-entry .log-status.s2xx {
  color: var(--success);
}

.log-entry .log-status.s4xx {
  color: var(--warning);
}

.log-entry .log-status.s5xx {
  color: var(--danger);
}

.log-entry .log-time {
  color: var(--text-muted);
  font-size: 0.68rem;
}

.log-entry .log-body {
  color: var(--text-muted);
  font-size: 0.68rem;
  display: block;
  max-height: 2.8em;
  overflow: hidden;
  text-overflow: ellipsis;
  padding-left: 1rem;
  opacity: 0.7;
}

.log-clear {
  margin: 0.4rem 1rem;
  align-self: flex-end;
}

/* ===== Responsive ===== */

@media (max-width: 640px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .header-right {
    width: 100%;
    justify-content: space-between;
  }

  .button-row {
    flex-wrap: wrap;
  }

  main {
    padding: 0 1rem;
    margin-top: 1rem;
  }
}