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

:root {
  --black: #0a0a0a;
  --near-black: #111111;
  --dark-gray: #1a1a1a;
  --mid-gray: #2a2a2a;
  --gray: #888;
  --light-gray: #aaa;
  --off-white: #d0d0d0;
  --white: #e8e8e8;
  --accent: #9b2060;
  --accent-hover: #b83078;
  --accent-dim: rgba(155, 32, 96, 0.15);
  --accent-solid: #590032;
  --bot-bubble: var(--near-black);
  --user-bubble: var(--mid-gray);
  --border: rgba(255, 255, 255, 0.06);
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
  --font-sans: 'Space Grotesk', -apple-system, sans-serif;
  --font-serif: 'Lora', Georgia, serif;
}

html, body {
  height: 100%;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* === Grain overlay (matching main site) === */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
}

/* === App Layout === */
.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 800px;
  margin: 0 auto;
}

/* === Header === */
.header {
  padding: 1.5rem 1.5rem 0;
  text-align: center;
  flex-shrink: 0;
}

.header-content {
  margin-bottom: 1rem;
}

.logo {
  font-family: var(--font-sans);
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.03em;
}

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

.tagline {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gray);
  font-size: 0.95rem;
  margin-top: 0.25rem;
}

.back-link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gray);
  text-decoration: none;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.3s;
  display: inline-block;
  margin-bottom: 0.75rem;
}

.back-link:hover {
  color: var(--white);
}

.nav {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.nav-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--gray);
  padding: 0.5rem 1.25rem;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}

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

.nav-btn.active {
  background: var(--accent-solid);
  color: var(--white);
  border-color: var(--accent-solid);
  font-weight: 500;
}

/* === Chat === */
.chat-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  padding: 0 1rem;
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  scroll-behavior: smooth;
}

.messages::-webkit-scrollbar {
  width: 4px;
}

.messages::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

.message {
  display: flex;
  gap: 0.75rem;
  max-width: 85%;
  animation: fadeIn 0.3s ease;
}

.message.bot {
  align-self: flex-start;
}

.message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message-avatar {
  width: 36px;
  height: 36px;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.message.bot .message-avatar {
  background: var(--accent-solid);
  color: var(--white);
}

.message.user .message-avatar {
  background: var(--mid-gray);
  color: var(--white);
}

.message-bubble {
  padding: 0.875rem 1.125rem;
  border-radius: 2px;
  line-height: 1.7;
  font-size: 0.9375rem;
}

.message-bubble p + p {
  margin-top: 0.75rem;
}

.message.bot .message-bubble {
  background: var(--near-black);
  border: 1px solid var(--border);
  color: var(--off-white);
}

.message.user .message-bubble {
  background: var(--mid-gray);
  color: var(--white);
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 0.5rem 0;
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: bounce 1.4s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Suggestions === */
.suggestions {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem 0;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.chip {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--gray);
  padding: 0.4rem 0.875rem;
  border-radius: 2px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.chip:hover {
  color: var(--white);
  border-color: var(--accent);
  background: var(--accent-dim);
}

/* === Input Area === */
.input-area {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 0;
  flex-shrink: 0;
}

#user-input {
  flex: 1;
  background: var(--near-black);
  border: 1px solid var(--border);
  color: var(--white);
  padding: 0.75rem 1rem;
  border-radius: 2px;
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.2s;
}

#user-input::placeholder {
  color: var(--gray);
}

#user-input:focus {
  border-color: var(--accent);
}

#send-btn {
  width: 44px;
  height: 44px;
  border-radius: 2px;
  background: var(--accent-solid);
  border: none;
  color: var(--white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  flex-shrink: 0;
}

#send-btn:hover {
  background: var(--accent-hover);
}

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

/* === Verras Me === */
.verrasme-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1.5rem;
  flex: 1;
  justify-content: center;
}

.verrasme-card {
  width: 100%;
  max-width: 600px;
  min-height: 200px;
  background: var(--near-black);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 2rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.verrasme-empty {
  text-align: center;
}

.verrasme-intro {
  color: var(--gray);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
}

.verrasme-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.verrasme-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--off-white);
  border-left: 2px solid var(--accent);
  padding-left: 1.25rem;
  margin-bottom: 1.25rem;
}

.verrasme-uitleg {
  color: var(--gray);
  font-size: 0.875rem;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.verrasme-youtube {
  color: var(--gray);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  text-decoration: none;
  transition: color 0.2s;
}

.verrasme-youtube:hover {
  color: var(--accent);
}

.verrasme-btn {
  background: var(--accent-solid);
  color: var(--white);
  border: none;
  padding: 0.75rem 2rem;
  border-radius: 2px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: 0.02em;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s;
}

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

.verrasme-btn:active {
  transform: scale(0.98);
}

.verrasme-btn-icon {
  font-size: 1.1rem;
}

.verrasme-counter {
  color: var(--gray);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  margin-top: 0.75rem;
}

/* === Modal === */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--dark-gray);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 2rem;
  max-width: 420px;
  width: 100%;
}

.modal-content h2 {
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.modal-content p {
  color: var(--gray);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.modal-content input {
  width: 100%;
  background: var(--black);
  border: 1px solid var(--border);
  color: var(--white);
  padding: 0.75rem 1rem;
  border-radius: 2px;
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  outline: none;
  margin-bottom: 1rem;
}

.modal-content input:focus {
  border-color: var(--accent);
}

.modal-buttons {
  display: flex;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--accent-solid);
  color: var(--white);
  border: none;
  padding: 0.625rem 1.5rem;
  border-radius: 2px;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background 0.2s;
}

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

.modal-note {
  margin-top: 0.75rem;
  font-size: 0.8rem !important;
}

.modal-note a {
  color: var(--accent);
}

/* === Footer === */
.footer {
  padding: 1rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.footer p {
  color: var(--gray);
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

.footer-sub {
  margin-top: 0.25rem;
  font-size: 0.65rem !important;
  opacity: 0.6;
}

/* === Tab Visibility === */
.tab-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.tab-content.hidden {
  display: none;
}

/* === Responsive === */
@media (max-width: 600px) {
  .logo {
    font-size: 1.5rem;
  }

  .message {
    max-width: 92%;
  }

  .suggestions {
    gap: 0.375rem;
  }

  .chip {
    font-size: 0.7rem;
    padding: 0.35rem 0.75rem;
  }

  .verrasme-card {
    padding: 1.5rem;
  }

  .verrasme-quote {
    font-size: 1rem;
  }
}