/* ── Reset & Base ─────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #fafaf8;
  --surface: #ffffff;
  --text: #1a1a1a;
  --text-secondary: #6b6b6b;
  --border: #e8e8e6;
  --accent: #4a9d7c;
  --accent-light: #e8f5ee;
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
  --transition: 0.2s ease;
}

/* Toxic mode overrides */
.mode-toxic {
  --bg: #141414;
  --surface: #1e1e1e;
  --text: #e8e8e6;
  --text-secondary: #8a8a8a;
  --border: #2a2a2a;
  --accent: #c45c5c;
  --accent-light: #2a1f1f;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.4);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app {
  max-width: 560px;
  width: 100%;
  padding: 48px 20px 80px;
}

/* ── Header ───────────────────────────────────────────── */
.header {
  text-align: center;
  margin-bottom: 48px;
}

.logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  transition: color var(--transition);
}

.logo-dot {
  color: var(--accent);
  transition: color var(--transition);
}

.subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 6px;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}

/* ── Input Section ────────────────────────────────────── */
.input-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.input-box {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.input-wrapper {
  width: 100%;
  position: relative;
}

.thought-input {
  width: 100%;
  font-family: var(--font);
  font-size: 1.0625rem;
  padding: 14px 16px;
  padding-right: 80px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition), background var(--transition), color var(--transition), box-shadow var(--transition);
}

.thought-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.thought-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.char-count {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.5;
  pointer-events: none;
  transition: color var(--transition);
}

/* ── Presets ───────────────────────────────────────────── */
.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.preset-btn {
  font-family: var(--font);
  font-size: 0.8125rem;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.preset-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

/* ── Mode Toggle ──────────────────────────────────────── */
.mode-toggle {
  display: flex;
  gap: 8px;
}

.mode-btn {
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 10px 20px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.mode-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.mode-btn--active {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
}

.mode-icon {
  font-size: 0.8rem;
  margin-right: 4px;
}

/* ── Simulate Button ──────────────────────────────────── */
.simulate-btn {
  font-family: var(--font);
  font-size: 1.125rem;
  font-weight: 400;
  padding: 12px 36px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.01em;
  margin-top: 4px;
}

.simulate-btn:hover:not(:disabled) {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.simulate-btn:active:not(:disabled) {
  transform: translateY(0);
}

.simulate-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ── Output Section ───────────────────────────────────── */
.output-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.hidden {
  display: none !important;
}

/* ── Thought Strip (the exportable artifact) ──────────── */
.thought-strip {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px 24px;
  box-shadow: var(--shadow-lg);
  transition: background var(--transition), border-color var(--transition);
}

.strip-header {
  text-align: center;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.strip-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 10px;
  transition: color var(--transition);
}

.strip-input {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  font-style: italic;
  color: var(--text);
  line-height: 1.4;
  transition: color var(--transition);
}

/* ── Thought List ─────────────────────────────────────── */
.thought-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.thought-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid transparent;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease, border-color var(--transition);
}

.thought-item--visible {
  opacity: 1;
  transform: translateY(0);
}

/* Subtle separator between thoughts */
.thought-item + .thought-item {
  border-top: 1px solid var(--border);
}

.thought-num {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg);
  border-radius: 50%;
  margin-top: 1px;
  transition: background var(--transition), color var(--transition);
}

.thought-text {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--text);
  transition: color var(--transition);
}

/* ── Escalation visual cues ───────────────────────────── */
.thought-item--questioning .thought-num {
  color: var(--accent);
  background: var(--accent-light);
}

/* Healthy spiral — gentle intensity */
.mode-healthy .thought-item--spiral .thought-text {
  color: var(--accent);
}

.mode-healthy .thought-item--spiral .thought-num {
  background: var(--accent);
  color: #fff;
}

.mode-healthy .thought-item--conclusion .thought-text {
  font-weight: 600;
  color: var(--accent);
}

.mode-healthy .thought-item--conclusion .thought-num {
  background: var(--accent);
  color: #fff;
}

/* Toxic spiral — escalating weight */
.mode-toxic .thought-item--spiral .thought-text {
  font-weight: 500;
}

.mode-toxic .thought-item--spiral .thought-num {
  background: var(--accent);
  color: #fff;
}

.mode-toxic .thought-item--conclusion {
  padding-top: 16px;
  padding-bottom: 16px;
}

.mode-toxic .thought-item--conclusion .thought-text {
  font-weight: 600;
  font-size: 1rem;
  color: var(--accent);
}

.mode-toxic .thought-item--conclusion .thought-num {
  background: var(--accent);
  color: #fff;
  width: 28px;
  height: 28px;
  font-size: 0.75rem;
}

/* ── Strip Footer ─────────────────────────────────────── */
.strip-footer {
  text-align: center;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.strip-watermark {
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
  opacity: 0.4;
  transition: color var(--transition);
}

/* ── Action Buttons ───────────────────────────────────── */
.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.action-btn {
  font-family: var(--font);
  font-size: 0.8125rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.action-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.action-btn svg {
  width: 14px;
  height: 14px;
}

.action-btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.action-btn--primary:hover {
  opacity: 0.9;
  color: #ffffff;
}

/* Subtle pulse for download button when animation completes */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(74, 157, 124, 0); }
  50% { box-shadow: 0 0 0 6px rgba(74, 157, 124, 0.2); }
}

.mode-toxic .action-btn--pulse {
  animation: pulse-glow-toxic 0.8s ease 2;
}

.action-btn--pulse {
  animation: pulse-glow 0.8s ease 2;
}

@keyframes pulse-glow-toxic {
  0%, 100% { box-shadow: 0 0 0 0 rgba(196, 92, 92, 0); }
  50% { box-shadow: 0 0 0 6px rgba(196, 92, 92, 0.25); }
}

/* ── Safety Message ───────────────────────────────────── */
.safety-message {
  display: flex;
  justify-content: center;
}

.safety-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
}

.safety-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  color: #e06060;
}

.safety-text {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text);
  margin-bottom: 12px;
}

.safety-link {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.5;
}

.safety-card .action-btn {
  margin-top: 20px;
  display: inline-flex;
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 600px) {
  #app {
    padding: 32px 16px 60px;
  }

  .logo {
    font-size: 1.625rem;
  }

  .thought-strip {
    padding: 24px 20px 20px;
  }

  .strip-input {
    font-size: 1.0625rem;
  }

  .thought-text {
    font-size: 0.875rem;
  }

  .input-box {
    padding: 16px;
    gap: 12px;
  }

  .presets {
    gap: 6px;
  }

  .preset-btn {
    font-size: 0.75rem;
    padding: 6px 12px;
  }

  .mode-btn {
    font-size: 0.8125rem;
    padding: 8px 16px;
  }

  .actions {
    gap: 8px;
  }

  .action-btn {
    font-size: 0.75rem;
    padding: 8px 14px;
  }
}

@media (max-width: 380px) {
  .presets {
    flex-direction: column;
    align-items: center;
  }

  .mode-toggle {
    flex-direction: column;
    width: 100%;
  }

  .mode-btn {
    width: 100%;
    text-align: center;
  }
}