:root {
  --bg: #313338;
  --bg-elevated: #2b2d31;
  --bg-card: #313338;
  --bg-input: #1e1f22;
  --border: #3f4147;
  --border-focus: #5865f2;
  --text: #dbdee1;
  --text-muted: #949ba4;
  --text-faint: #6d6f78;
  --accent: #5865f2;
  --accent-hover: #4752c4;
  --accent-soft: rgba(88, 101, 242, 0.15);
  --success: #3ba55d;
  --success-soft: rgba(59, 165, 93, 0.15);
  --danger: #da373c;
  --danger-soft: rgba(218, 55, 60, 0.12);
  --radius: 8px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  position: relative;
  overflow-x: hidden;
}

.screen {
  position: relative;
  z-index: 1;
  display: none;
  min-height: 100vh;
  width: 100%;
  padding: 48px 20px;
  align-items: flex-start;
  justify-content: center;
}

.screen.active {
  display: flex;
}

.intro-card,
.wizard-card {
  width: 100%;
  max-width: 640px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 44px 40px;
  margin-top: 4vh;
}

/* ---------- Intro screen ---------- */

.intro-card h1 {
  font-size: 26px;
  line-height: 1.25;
  margin: 0 0 14px;
  font-weight: 700;
}

.subtitle {
  color: var(--text-muted);
  font-size: 15px;
  margin: 0 0 20px;
}

.note {
  color: var(--text-faint);
  font-size: 13.5px;
  margin: 0 0 28px;
  padding-left: 12px;
  border-left: 2px solid var(--border);
}

.btn {
  cursor: pointer;
  border: none;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 600;
  padding: 12px 22px;
  transition: transform 0.12s ease, background 0.15s ease, opacity 0.15s ease;
  font-family: inherit;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: #35373c;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn-large {
  width: 100%;
  padding: 15px 22px;
  font-size: 15px;
}

/* ---------- Wizard ---------- */

.progress-wrap {
  margin-bottom: 32px;
}

.progress-steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 14px;
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 1;
  position: relative;
}

.progress-step span {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-faint);
  transition: all 0.2s ease;
}

.progress-step label {
  font-size: 11px;
  color: var(--text-faint);
  font-weight: 600;
  text-align: center;
}

.progress-step.active span {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.progress-step.active label {
  color: var(--text);
}

.progress-step.done span {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.progress-bar-bg {
  height: 4px;
  background: var(--bg-elevated);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.3s ease;
}

.step {
  display: none;
  animation: fadeIn 0.25s ease;
}

.step.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.step h2 {
  margin: 0 0 6px;
  font-size: 22px;
}

.step-desc {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 24px;
}

.field {
  margin-bottom: 20px;
}

.field-row {
  display: flex;
  gap: 16px;
}

.field-row .field {
  flex: 1;
}

.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.field input[type="text"],
.field input[type="number"],
.field textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 13px;
  color: var(--text);
  font-size: 14.5px;
  font-family: inherit;
  resize: vertical;
  transition: border-color 0.15s ease;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--border-focus);
}

.field input.invalid,
.field textarea.invalid {
  border-color: var(--danger);
  background: var(--danger-soft);
}

.checkbox-field {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}

.checkbox-field input {
  margin-top: 3px;
  width: 17px;
  height: 17px;
  accent-color: var(--accent);
  flex-shrink: 0;
}

.checkbox-field label {
  font-size: 13.5px;
  color: var(--text-muted);
  margin: 0;
  font-weight: 500;
}

.review-summary {
  margin-top: 24px;
  display: none;
}

.review-summary.visible {
  display: block;
}

.review-summary h3 {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.review-item {
  border-top: 1px solid var(--border);
  padding: 10px 0;
  font-size: 13.5px;
}

.review-item strong {
  display: block;
  color: var(--text-muted);
  font-size: 12px;
  margin-bottom: 3px;
  font-weight: 600;
}

.review-item span {
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

.wizard-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

#submit-btn {
  display: none;
}

.form-error {
  color: var(--danger);
  font-size: 13px;
  flex: 1;
  text-align: right;
}

/* ---------- Success screen ---------- */

.success-card {
  text-align: center;
}

.fallback-box {
  text-align: left;
  background: var(--bg-elevated);
  border: 1px solid var(--danger);
  border-radius: 10px;
  padding: 18px 20px;
  margin: 24px 0;
}

.fallback-title {
  color: var(--danger);
  font-weight: 700;
  margin: 0 0 8px;
  font-size: 14px;
}

.fallback-box p {
  font-size: 13.5px;
  color: var(--text-muted);
  margin: 0 0 14px;
}

.fallback-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

#fallback-text {
  width: 100%;
  min-height: 180px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-family: "Consolas", "SF Mono", monospace;
  font-size: 12px;
  padding: 12px;
  resize: vertical;
}

/* ---------- Responsive ---------- */

@media (max-width: 600px) {
  .intro-card, .wizard-card {
    padding: 28px 22px;
    margin-top: 0;
  }

  .intro-card h1 {
    font-size: 26px;
  }

  .field-row {
    flex-direction: column;
    gap: 0;
  }

  .progress-step label {
    display: none;
  }

  .fallback-actions {
    flex-direction: column;
  }
}