/**
 * GravityBot Styles
 * Version: 2.4
 * Couleurs harmonisées avec le site Gravity Space
 */

:root {
  --gb-primary: #00D4FF;
  --gb-accent: #FF6A00;
  --gb-bg-dark: #0a0a14;
  --gb-bg-card: #12121e;
  --gb-bg-input: #1a1a2a;
  --gb-text: #ffffff;
  --gb-text-muted: #8899aa;
  --gb-border: #252540;
  --gb-success: #00C851;
  --gb-radius: 16px;
  --gb-radius-sm: 10px;
}

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

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--gb-bg-dark);
  color: var(--gb-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Container */
.gravitybot-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-height: 100vh;
  overflow: hidden;
  position: relative; /* anchor pour l'overlay callback */
}

/* Header */
.gb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: linear-gradient(135deg, #0a0a14, #151530);
  border-bottom: 1px solid var(--gb-border);
  flex-shrink: 0;
}

.gb-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.gb-logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--gb-primary), var(--gb-accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.gb-logo-icon svg {
  width: 26px;
  height: 26px;
}

.gb-logo-text h1 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--gb-primary);
}

.gb-logo-text p {
  font-size: 0.75rem;
  color: var(--gb-text-muted);
  font-weight: 400;
}

/* Bouton fermer */
.gb-close-btn {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: white;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.gb-close-btn:hover {
  background: rgba(255, 106, 0, 0.3);
}

.gb-close-btn svg {
  width: 22px;
  height: 22px;
}

@media (max-width: 600px) {
  .gb-close-btn {
    display: flex;
  }
}

/* Selectors */
.gb-selectors {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 12px 20px;
  background: var(--gb-bg-card);
  border-bottom: 1px solid var(--gb-border);
  flex-shrink: 0;
}

.gb-select-wrapper,
.gb-input-wrapper {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.gb-select-wrapper label,
.gb-input-wrapper label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--gb-text-muted);
  font-weight: 500;
}

.gb-selectors select,
.gb-selectors input {
  padding: 10px 14px;
  background: var(--gb-bg-input);
  border: 1px solid var(--gb-border);
  border-radius: var(--gb-radius-sm);
  color: var(--gb-text);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.gb-selectors select:focus,
.gb-selectors input:focus {
  border-color: var(--gb-primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.gb-selectors select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238899aa' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.gb-selectors input::placeholder {
  color: var(--gb-text-muted);
}

/* Messages */
.gb-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.gb-message {
  display: flex;
  gap: 10px;
  max-width: 90%;
  animation: messageSlide 0.3s ease;
}

@keyframes messageSlide {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

.gb-message-avatar {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.gb-bot .gb-message-avatar {
  background: linear-gradient(135deg, var(--gb-primary), var(--gb-accent));
  color: white;
}

.gb-user .gb-message-avatar {
  background: var(--gb-bg-input);
  color: var(--gb-text-muted);
}

.gb-message-avatar svg {
  width: 20px;
  height: 20px;
}

.gb-message-content {
  padding: 12px 16px;
  border-radius: var(--gb-radius);
  font-size: 0.9rem;
  line-height: 1.5;
}

.gb-bot .gb-message-content {
  background: var(--gb-bg-card);
  border: 1px solid var(--gb-border);
  border-bottom-left-radius: 4px;
}

.gb-user .gb-message-content {
  background: linear-gradient(135deg, var(--gb-primary), #00a0cc);
  color: white;
  border-bottom-right-radius: 4px;
}

/* Quick Actions */
.gb-quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.gb-quick-btn {
  padding: 8px 14px;
  background: var(--gb-bg-input);
  border: 1px solid var(--gb-border);
  border-radius: 20px;
  color: var(--gb-text);
  font-family: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.gb-quick-btn:hover {
  background: var(--gb-primary);
  border-color: var(--gb-primary);
  color: #0a0a14;
  transform: translateY(-1px);
}

/* CTA button after bot reply */
.gb-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 10px 18px;
  background: linear-gradient(135deg, var(--gb-primary), var(--gb-accent));
  color: white !important;
  text-decoration: none;
  border-radius: 22px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.gb-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 212, 255, 0.35);
}

.gb-cta::after {
  content: "→";
  font-weight: 700;
}

/* Related question chips */
.gb-related {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--gb-border);
}

.gb-related-label {
  width: 100%;
  font-size: 0.7rem;
  color: var(--gb-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.gb-related-chip {
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--gb-border);
  border-radius: 16px;
  color: var(--gb-text-muted);
  font-family: inherit;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.gb-related-chip:hover {
  background: var(--gb-bg-input);
  border-color: var(--gb-primary);
  color: var(--gb-primary);
}

/* Lead capture form (contextual, shown when bot can't answer) */
.gb-lead-capture {
  margin-top: 12px;
  padding: 12px;
  background: rgba(255, 106, 0, 0.08);
  border: 1px solid rgba(255, 106, 0, 0.3);
  border-radius: var(--gb-radius-sm);
}

.gb-lead-capture p {
  font-size: 0.82rem;
  color: var(--gb-text);
  margin-bottom: 10px;
}

.gb-lead-form {
  display: flex;
  gap: 8px;
}

.gb-lead-form input {
  flex: 1;
  padding: 10px 14px;
  background: var(--gb-bg-input);
  border: 1px solid var(--gb-border);
  border-radius: var(--gb-radius-sm);
  color: var(--gb-text);
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
}

.gb-lead-form input:focus {
  border-color: var(--gb-accent);
  box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.15);
}

.gb-lead-form button {
  padding: 10px 16px;
  background: var(--gb-accent);
  color: white;
  border: none;
  border-radius: var(--gb-radius-sm);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease;
}

.gb-lead-form button:hover {
  background: #ff8533;
}

.gb-lead-success {
  font-size: 0.85rem;
  color: var(--gb-success);
  margin-top: 8px;
}

/* Typing Indicator */
.gb-typing {
  display: flex;
  gap: 4px;
  padding: 8px 0;
}

.gb-typing span {
  width: 8px;
  height: 8px;
  background: var(--gb-primary);
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out;
}

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

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

@keyframes typing {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  30% {
    transform: translateY(-6px);
    opacity: 1;
  }
}

/* Composer */
.gb-composer {
  display: flex;
  gap: 10px;
  padding: 16px 20px;
  background: var(--gb-bg-card);
  border-top: 1px solid var(--gb-border);
  flex-shrink: 0;
}

.gb-composer input {
  flex: 1;
  padding: 14px 18px;
  background: var(--gb-bg-input);
  border: 1px solid var(--gb-border);
  border-radius: 25px;
  color: var(--gb-text);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.gb-composer input:focus {
  border-color: var(--gb-primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.gb-composer input::placeholder {
  color: var(--gb-text-muted);
}

.gb-composer button {
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gb-primary), var(--gb-accent));
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  flex-shrink: 0;
}

.gb-composer button:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

.gb-composer button:active {
  transform: scale(0.95);
}

.gb-composer button svg {
  width: 22px;
  height: 22px;
}

.gb-composer button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Footer */
.gb-footer {
  padding: 12px 20px;
  text-align: center;
  background: var(--gb-bg-dark);
  border-top: 1px solid var(--gb-border);
  flex-shrink: 0;
}

.gb-footer p {
  font-size: 0.75rem;
  color: var(--gb-text-muted);
}

.gb-footer-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--gb-border);
  border-radius: 18px;
  color: var(--gb-text-muted);
  font-family: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.gb-footer-btn:hover {
  background: var(--gb-accent);
  border-color: var(--gb-accent);
  color: white;
}

/* Callback form (rappel humain) */
.gb-callback-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 20, 0.85);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 20px;
  animation: gbFadeIn 0.2s ease;
}

@keyframes gbFadeIn { from { opacity: 0; } to { opacity: 1; } }

.gb-callback-form {
  background: var(--gb-bg-card);
  border: 1px solid var(--gb-border);
  border-radius: var(--gb-radius);
  padding: 24px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.gb-callback-form h3 {
  font-size: 1.05rem;
  margin: 0 0 4px;
  color: var(--gb-primary);
}

.gb-callback-form .gb-sub {
  font-size: 0.8rem;
  color: var(--gb-text-muted);
  margin-bottom: 16px;
}

.gb-callback-form .gb-field {
  margin-bottom: 12px;
}

.gb-callback-form label {
  display: block;
  font-size: 0.7rem;
  color: var(--gb-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.gb-callback-form input,
.gb-callback-form textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--gb-bg-input);
  border: 1px solid var(--gb-border);
  border-radius: var(--gb-radius-sm);
  color: var(--gb-text);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  resize: vertical;
}

.gb-callback-form input:focus,
.gb-callback-form textarea:focus {
  border-color: var(--gb-primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.gb-callback-form textarea {
  min-height: 70px;
  font-family: inherit;
}

.gb-callback-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.gb-callback-actions button {
  flex: 1;
  padding: 10px 16px;
  border: none;
  border-radius: var(--gb-radius-sm);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.gb-callback-cancel {
  background: var(--gb-bg-input);
  color: var(--gb-text-muted);
}

.gb-callback-cancel:hover { background: var(--gb-border); }

.gb-callback-submit {
  background: linear-gradient(135deg, var(--gb-primary), var(--gb-accent));
  color: white;
}

.gb-callback-submit:hover { transform: translateY(-1px); }
.gb-callback-submit:disabled { opacity: 0.5; cursor: not-allowed; }

.gb-callback-success {
  text-align: center;
  padding: 8px;
  color: var(--gb-success);
  font-size: 0.9rem;
}

.gb-callback-error {
  color: var(--gb-accent);
  font-size: 0.8rem;
  margin-top: 8px;
}

/* Scrollbar */
.gb-messages::-webkit-scrollbar {
  width: 6px;
}

.gb-messages::-webkit-scrollbar-track {
  background: transparent;
}

.gb-messages::-webkit-scrollbar-thumb {
  background: var(--gb-border);
  border-radius: 3px;
}

.gb-messages::-webkit-scrollbar-thumb:hover {
  background: var(--gb-text-muted);
}

/* Mobile adjustments */
@media (max-width: 600px) {
  .gb-header {
    padding: 14px 16px;
  }
  
  .gb-selectors {
    padding: 12px 16px;
    gap: 10px;
  }
  
  .gb-messages {
    padding: 16px;
  }
  
  .gb-composer {
    padding: 12px 16px;
  }
  
  .gb-composer input {
    padding: 12px 16px;
    font-size: 16px;
  }
  
  .gb-message {
    max-width: 95%;
  }
  
  .gb-quick-btn {
    font-size: 0.75rem;
    padding: 6px 12px;
  }
}