src/styles.css

:root {
  color-scheme: light;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #142033;
  background:
    radial-gradient(circle at top, rgba(84, 139, 255, 0.14), transparent 28%),
    linear-gradient(180deg, #f7f9ff 0%, #eef4ff 45%, #eaf0fb 100%);
  line-height: 1.5;
  font-weight: 400;
}

* {
  box-sizing: border-box;
}

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

body {
  min-height: 100vh;
}

button {
  font: inherit;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.hero-card {
  width: min(960px, 100%);
  border: 1px solid rgba(98, 128, 198, 0.14);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 28px 80px rgba(61, 89, 145, 0.12);
  backdrop-filter: blur(18px);
  border-radius: 28px;
  padding: 28px;
}

.landing-card {
  display: grid;
  gap: 18px;
}

.landing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.landing-feature {
  padding: 18px;
  border-radius: 20px;
  background: rgba(91, 123, 208, 0.06);
  border: 1px solid rgba(91, 123, 208, 0.1);
}

.landing-feature strong {
  display: block;
  margin-bottom: 8px;
  color: #16213a;
}

.landing-feature p {
  margin: 0;
  color: #5f6f8b;
}

.landing-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.top-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(93, 131, 242, 0.12);
  color: #3556a8;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  margin: 14px 0 10px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.05;
}

.lead {
  margin: 0;
  max-width: 62ch;
  color: #5f6f8b;
}

.progress-chip {
  min-width: 110px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(91, 123, 208, 0.08);
  border: 1px solid rgba(91, 123, 208, 0.1);
  text-align: center;
}

.progress-chip span,
.panel-label,
.footer-note,
.score-meta,
.score-label,
.helper-text,
.disclaimer {
  color: #63728b;
}

.progress-chip strong {
  display: block;
  font-size: 1.35rem;
  color: #142033;
}

.progress-bar {
  margin: 24px 0;
  height: 10px;
  border-radius: 999px;
  background: rgba(91, 123, 208, 0.12);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #6ea8ff, #8b7dff, #70e0c8);
}

.question-card {
  padding: 24px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(245, 249, 255, 0.92));
  border: 1px solid rgba(91, 123, 208, 0.12);
}

.question-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.chat-top {
  align-items: flex-start;
}

.chat-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

h2 {
  margin: 0 0 20px;
  font-size: clamp(1.2rem, 2.2vw, 1.7rem);
  color: #16213a;
}

.options {
  display: grid;
  gap: 12px;
}

.option-button {
  width: 100%;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  align-items: center;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(91, 123, 208, 0.14);
  background: rgba(255, 255, 255, 0.9);
  color: #183055;
  text-align: left;
  cursor: pointer;
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    background 0.18s ease;
}

.option-button:hover {
  transform: translateY(-1px);
  border-color: rgba(126, 170, 255, 0.42);
  background: rgba(236, 243, 255, 0.98);
}

.option-button.selected {
  border-color: rgba(110, 168, 255, 0.85);
  background: rgba(221, 235, 255, 0.98);
}

.option-index {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(93, 131, 242, 0.12);
  color: #3556a8;
  font-weight: 700;
}

.option-text {
  color: #183055;
}

.nav-row,
.result-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 22px;
}

.helper-text {
  text-align: center;
  flex: 1;
}

.primary-button,
.secondary-button,
.ghost-button {
  border: 0;
  padding: 14px 18px;
  border-radius: 14px;
  cursor: pointer;
  transition:
    transform 0.18s ease,
    opacity 0.18s ease;
}

.primary-button {
  color: #ffffff;
  background: linear-gradient(135deg, #5d83f2, #7b8ef6 55%, #50c7b0);
  font-weight: 700;
  min-width: 120px;
}

.secondary-button {
  color: #27406f;
  background: rgba(91, 123, 208, 0.08);
  border: 1px solid rgba(91, 123, 208, 0.12);
  min-width: 120px;
}

.ghost-button {
  color: #4e658e;
  background: transparent;
  border: 1px solid rgba(91, 123, 208, 0.12);
  min-width: 120px;
}

.primary-button:hover,
.secondary-button:hover {
  transform: translateY(-1px);
}

.primary-button:disabled,
.secondary-button:disabled,
.ghost-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.footer-note {
  margin-top: 18px;
  font-size: 0.94rem;
}

.results-card h1 {
  max-width: 14ch;
}

.result-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.score-card {
  padding: 20px;
  border-radius: 22px;
  border: 1px solid rgba(91, 123, 208, 0.12);
  background: rgba(255, 255, 255, 0.92);
}

.score-card p {
  margin: 10px 0 0;
  color: #5f6f8b;
}

.mini-bar {
  margin-top: 12px;
  height: 10px;
  border-radius: 999px;
  background: rgba(91, 123, 208, 0.1);
  overflow: hidden;
}

.mini-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #5d83f2, #50c7b0);
}

.score-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

.score-value {
  margin-top: 8px;
  font-size: 2.5rem;
  font-weight: 800;
}

.highlight-panel {
  margin-top: 18px;
  padding: 18px 20px;
  border-radius: 20px;
  background: rgba(93, 131, 242, 0.08);
  border: 1px solid rgba(93, 131, 242, 0.12);
}

.highlight-panel strong {
  display: block;
  margin-top: 6px;
  font-size: 1.08rem;
}

.result-dashboard {
  margin-top: 18px;
  display: grid;
  gap: 14px;
}

.warning-banner {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 205, 96, 0.16);
  border: 1px solid rgba(255, 205, 96, 0.28);
  color: #6f4c00;
}

.risk-high {
  background: rgba(255, 120, 120, 0.14);
  border-color: rgba(255, 120, 120, 0.28);
  color: #8c1e1e;
}

.risk-moderate {
  background: rgba(255, 180, 80, 0.14);
  border-color: rgba(255, 180, 80, 0.28);
  color: #7b4a00;
}

.chat-card {
  width: min(960px, 100%);
  padding: 0 !important; /* Reset padding để header và input sát viền */
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 680px;
}

.questionnaire-card {
  padding: 0 !important;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 680px;
}

/* Header dạng Messenger/Zalo */
.messenger-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(91, 123, 208, 0.12);
  z-index: 10;
}

.messenger-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.messenger-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  box-shadow: 0 4px 12px rgba(91, 123, 208, 0.2);
}

.bg-gemini {
  background: linear-gradient(135deg, #7f56da, #3f7bf6);
}

.bg-dass {
  background: linear-gradient(135deg, #00b4db, #0083b0);
}

.messenger-info h2 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: #1e293b;
  line-height: 1.2;
}

.messenger-status {
  margin: 4px 0 0;
  font-size: 0.8rem;
  color: #64748b;
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: #22c55e;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.2);
}

.messenger-actions {
  display: flex;
  gap: 8px;
}

.progress-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  min-width: 140px;
}

.progress-info span {
  font-size: 0.85rem;
  font-weight: 600;
  color: #475569;
}

.progress-bar-mini {
  width: 100%;
  height: 6px;
  border-radius: 99px;
  background: rgba(91, 123, 208, 0.12);
  overflow: hidden;
}

.progress-fill-mini {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #00b4db, #7f56da);
  transition: width 0.3s ease;
}

.action-icon-btn {
  border: 0;
  background: rgba(91, 123, 208, 0.06);
  border: 1px solid rgba(91, 123, 208, 0.1);
  color: #3b5284;
  padding: 8px 14px;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.action-icon-btn:hover {
  background: rgba(91, 123, 208, 0.12);
  transform: translateY(-1px);
}

.action-icon-btn.secondary {
  background: transparent;
  color: #64748b;
  border-color: transparent;
}

.action-icon-btn.secondary:hover {
  background: rgba(91, 123, 208, 0.05);
}

/* Khung chat cố định */
.chat-thread {
  flex: 1;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
  background: #f8fafc;
}

/* Custom Scrollbar cho Chat */
.chat-thread::-webkit-scrollbar {
  width: 6px;
}
.chat-thread::-webkit-scrollbar-track {
  background: transparent;
}
.chat-thread::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.3);
  border-radius: 99px;
}
.chat-thread::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.5);
}

/* Cấu trúc tin nhắn */
.chat-message {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  max-width: 75%;
  animation: messageSlideIn 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes messageSlideIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chat-message.assistant {
  align-self: flex-start;
}

.chat-message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
  max-width: 70%;
}

.bubble-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: white;
  font-weight: 700;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-bottom: 2px;
}

/* Bong bóng chat tinh tế */
.chat-bubble {
  padding: 12px 16px;
  border-radius: 18px;
  font-size: 0.95rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

.chat-message.assistant .chat-bubble {
  background: #ffffff;
  color: #0f172a;
  border: 1px solid #e2e8f0;
  border-bottom-left-radius: 4px;
}

.chat-message.user .chat-bubble {
  background: linear-gradient(135deg, #0084ff, #00a2ff); /* Phong cách Messenger/Zalo */
  color: #ffffff;
  border-bottom-right-radius: 4px;
}

/* Thanh nhập tin nhắn dạng viên thuốc */
.chat-input-area {
  padding: 16px 24px;
  background: #ffffff;
  border-top: 1px solid rgba(91, 123, 208, 0.12);
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-input-area input {
  flex: 1;
  height: 48px;
  border-radius: 24px;
  border: 1px solid #e2e8f0;
  background: #f1f5f9;
  color: #0f172a;
  padding: 0 20px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: all 0.2s ease;
}

.chat-input-area input:focus {
  outline: none;
  border-color: #0084ff;
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(0, 132, 255, 0.15);
}

.chat-input-area input::placeholder {
  color: #94a3b8;
}

/* Nút gửi Icon máy bay */
.send-icon-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 0;
  background: #0084ff;
  color: white;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.send-icon-btn:hover {
  background: #0074e0;
  transform: scale(1.05);
}

.send-icon-btn:active {
  transform: scale(0.95);
}

.send-icon-btn:disabled {
  background: #cbd5e1;
  color: #94a3b8;
  cursor: not-allowed;
  transform: none;
}

.send-icon-btn svg {
  margin-left: 2px; /* Lệch tâm nhẹ để cân bằng thị giác */
}

.cancel-pill-btn {
  border: 0;
  background: transparent;
  color: #64748b;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0 8px;
  transition: color 0.2s ease;
}

.cancel-pill-btn:hover {
  color: #0f172a;
}

/* Các nút trả lời nhanh (Quick Replies) */
.quick-replies {
  display: flex;
  gap: 8px;
  padding: 12px 24px;
  background: #f8fafc;
  overflow-x: auto;
  border-top: 1px solid rgba(91, 123, 208, 0.08);
  flex-wrap: wrap;
}

.quick-replies::-webkit-scrollbar {
  height: 4px;
}
.quick-replies::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.2);
  border-radius: 99px;
}

.quick-reply-btn {
  border: 1px solid #0084ff;
  background: #ffffff;
  color: #0084ff;
  padding: 8px 16px;
  border-radius: 18px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.quick-reply-btn:hover:not(:disabled) {
  background: #0084ff;
  color: #ffffff;
  transform: translateY(-1px);
}

.quick-reply-btn:disabled {
  border-color: #cbd5e1;
  color: #94a3b8;
  cursor: not-allowed;
}

/* Hiệu ứng gõ chữ (Typing Animation) */
.typing {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 20px;
  padding: 12px 14px !important;
}

.typing span {
  width: 6px;
  height: 6px;
  background-color: #94a3b8;
  border-radius: 50%;
  display: inline-block;
  animation: typing-bounce 1.4s infinite ease-in-out both;
}

.typing span:nth-child(1) {
  animation-delay: -0.32s;
}

.typing span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes typing-bounce {
  0%, 80%, 100% { 
    transform: scale(0);
  } 40% { 
    transform: scale(1.0);
  }
}

@media (max-width: 800px) {
  .chat-card,
  .questionnaire-card {
    height: calc(100vh - 48px);
    border-radius: 16px;
  }
  
  .messenger-header {
    padding: 12px 16px;
  }
  
  .progress-info {
    min-width: auto;
  }
  
  .chat-thread {
    padding: 16px;
  }
  
  .chat-message {
    max-width: 85%;
  }
  
  .chat-input-area {
    padding: 12px 16px;
  }
  
  .result-grid {
    grid-template-columns: 1fr;
  }
  
  .top-row,
  .nav-row,
  .result-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
}

/* Modal Backdrop with Glassmorphism */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.25s ease-out forwards;
}

/* Modal Box */
.modal-container {
  width: min(680px, 92%);
  max-height: 85vh;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(91, 123, 208, 0.16);
  border-radius: 24px;
  box-shadow: 0 30px 100px rgba(15, 23, 42, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Header */
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid rgba(91, 123, 208, 0.12);
  background: rgba(255, 255, 255, 0.8);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 800;
  color: #1e293b;
  letter-spacing: -0.02em;
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #64748b;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 8px;
  transition: all 0.2s ease;
  line-height: 1;
}

.modal-close-btn:hover {
  background: rgba(91, 123, 208, 0.08);
  color: #0f172a;
}

/* Body Content */
.modal-body {
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Scrollbar styling for modal body */
.modal-body::-webkit-scrollbar {
  width: 6px;
}
.modal-body::-webkit-scrollbar-track {
  background: transparent;
}
.modal-body::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.3);
  border-radius: 99px;
}

.modal-intro {
  margin: 0;
  font-size: 0.95rem;
  color: #475569;
  line-height: 1.6;
}

/* Privacy sections */
.privacy-section {
  background: rgba(91, 123, 208, 0.04);
  border: 1px solid rgba(91, 123, 208, 0.08);
  border-radius: 16px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.2s ease;
}

.privacy-section:hover {
  transform: translateY(-1px);
  border-color: rgba(91, 123, 208, 0.14);
  background: rgba(91, 123, 208, 0.06);
}

.privacy-section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: #0f172a;
  font-size: 1rem;
}

.privacy-icon {
  font-size: 1.2rem;
}

.privacy-list {
  margin: 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.9rem;
  color: #334155;
  line-height: 1.5;
}

.privacy-list li strong {
  color: #0f172a;
}

/* Checkbox Opt-in */
.consent-checkbox-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(34, 197, 94, 0.05);
  border: 1px solid rgba(34, 197, 94, 0.12);
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.consent-checkbox-wrapper:hover {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.2);
}

.consent-checkbox-wrapper input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin: 2px 0 0 0;
  cursor: pointer;
  accent-color: #22c55e;
}

.consent-checkbox-wrapper span {
  font-size: 0.9rem;
  color: #1e293b;
  line-height: 1.4;
  font-weight: 500;
}

/* Footer Actions */
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 16px 24px 20px;
  border-top: 1px solid rgba(91, 123, 208, 0.12);
  background: rgba(255, 255, 255, 0.8);
}

/* Keyframes for animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Mobile responsive fixes */
@media (max-width: 600px) {
  .modal-container {
    width: 100%;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
  }
  .modal-actions {
    padding: 16px;
    flex-direction: column-reverse;
  }
  .modal-actions button {
    width: 100%;
  }
  .modal-body {
    padding: 16px;
  }
}

/* --- THEME TOGGLE BUTTON --- */
.theme-toggle-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(91, 123, 208, 0.16);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #1e293b;
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(61, 89, 145, 0.1);
  z-index: 100;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle-btn:hover {
  transform: scale(1.05) rotate(15deg);
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(91, 123, 208, 0.3);
  box-shadow: 0 6px 16px rgba(61, 89, 145, 0.15);
}

/* --- DARK MODE OVERRIDES --- */
:root[data-theme="dark"] {
  color-scheme: dark;
  color: #f1f5f9;
  background:
    radial-gradient(circle at top, rgba(99, 102, 241, 0.15), transparent 45%),
    linear-gradient(180deg, #0b0f19 0%, #111827 100%);
}

/* Dark mode theme toggle styling */
:root[data-theme="dark"] .theme-toggle-btn {
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(99, 102, 241, 0.25);
  color: #f8fafc;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
}

:root[data-theme="dark"] .theme-toggle-btn:hover {
  background: rgba(30, 41, 59, 0.95);
  border-color: rgba(99, 102, 241, 0.45);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.45);
}

/* Cards & containers */
:root[data-theme="dark"] .hero-card {
  border-color: rgba(99, 102, 241, 0.16);
  background: rgba(17, 24, 39, 0.85);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.45);
}

:root[data-theme="dark"] .landing-feature {
  background: rgba(99, 102, 241, 0.08);
  border-color: rgba(99, 102, 241, 0.15);
}

:root[data-theme="dark"] .landing-feature strong {
  color: #f8fafc;
}

:root[data-theme="dark"] .landing-feature p {
  color: #94a3b8;
}

:root[data-theme="dark"] h1, 
:root[data-theme="dark"] h2 {
  color: #f8fafc;
}

:root[data-theme="dark"] .lead,
:root[data-theme="dark"] .progress-chip span,
:root[data-theme="dark"] .panel-label,
:root[data-theme="dark"] .footer-note,
:root[data-theme="dark"] .score-meta,
:root[data-theme="dark"] .score-label,
:root[data-theme="dark"] .helper-text,
:root[data-theme="dark"] .disclaimer {
  color: #94a3b8;
}

:root[data-theme="dark"] .progress-chip {
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.15);
}

:root[data-theme="dark"] .progress-chip strong {
  color: #f8fafc;
}

:root[data-theme="dark"] .progress-bar {
  background: rgba(99, 102, 241, 0.18);
}

:root[data-theme="dark"] .question-card {
  background: linear-gradient(180deg, rgba(31, 41, 55, 0.9), rgba(17, 24, 39, 0.95));
  border-color: rgba(99, 102, 241, 0.18);
}

/* Options */
:root[data-theme="dark"] .option-button {
  border-color: rgba(99, 102, 241, 0.18);
  background: rgba(31, 41, 55, 0.5);
  color: #e2e8f0;
}

:root[data-theme="dark"] .option-button:hover {
  border-color: rgba(129, 140, 248, 0.5);
  background: rgba(49, 46, 129, 0.3);
}

:root[data-theme="dark"] .option-button.selected {
  border-color: rgba(99, 102, 241, 0.85);
  background: rgba(49, 46, 129, 0.55);
}

:root[data-theme="dark"] .option-index {
  background: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
}

:root[data-theme="dark"] .option-text {
  color: #f1f5f9;
}

/* Buttons */
:root[data-theme="dark"] .secondary-button {
  color: #e2e8f0;
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.25);
}

:root[data-theme="dark"] .ghost-button {
  color: #cbd5e1;
  border-color: rgba(99, 102, 241, 0.2);
}

/* Results */
:root[data-theme="dark"] .score-card {
  border-color: rgba(99, 102, 241, 0.18);
  background: rgba(31, 41, 55, 0.6);
}

:root[data-theme="dark"] .score-card p {
  color: #94a3b8;
}

:root[data-theme="dark"] .mini-bar {
  background: rgba(99, 102, 241, 0.15);
}

:root[data-theme="dark"] .score-value {
  color: #f8fafc;
}

:root[data-theme="dark"] .highlight-panel {
  background: rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.2);
}

/* Messenger components */
:root[data-theme="dark"] .messenger-header {
  background: rgba(17, 24, 39, 0.95);
  border-bottom-color: rgba(99, 102, 241, 0.18);
}

:root[data-theme="dark"] .messenger-info h2 {
  color: #f8fafc;
}

:root[data-theme="dark"] .messenger-status {
  color: #94a3b8;
}

:root[data-theme="dark"] .progress-info span {
  color: #cbd5e1;
}

:root[data-theme="dark"] .progress-bar-mini {
  background: rgba(99, 102, 241, 0.18);
}

:root[data-theme="dark"] .action-icon-btn {
  background: rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.2);
  color: #cbd5e1;
}

:root[data-theme="dark"] .action-icon-btn:hover {
  background: rgba(99, 102, 241, 0.2);
}

:root[data-theme="dark"] .action-icon-btn.secondary {
  color: #94a3b8;
}

:root[data-theme="dark"] .action-icon-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

:root[data-theme="dark"] .chat-thread {
  background: #0f172a;
}

/* Chat bubble styling */
:root[data-theme="dark"] .chat-message.assistant .chat-bubble {
  background: #1e293b;
  color: #f1f5f9;
  border-color: #334155;
}

:root[data-theme="dark"] .chat-input-area {
  background: #111827;
  border-top-color: rgba(99, 102, 241, 0.18);
}

:root[data-theme="dark"] .chat-input-area input {
  border-color: #334155;
  background: #1f2937;
  color: #f1f5f9;
}

:root[data-theme="dark"] .chat-input-area input:focus {
  border-color: #6366f1;
  background: #1f2937;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

:root[data-theme="dark"] .chat-input-area input::placeholder {
  color: #6b7280;
}

:root[data-theme="dark"] .cancel-pill-btn {
  color: #94a3b8;
}

:root[data-theme="dark"] .cancel-pill-btn:hover {
  color: #f1f5f9;
}

:root[data-theme="dark"] .quick-replies {
  background: #0f172a;
  border-top-color: rgba(99, 102, 241, 0.12);
}

:root[data-theme="dark"] .quick-reply-btn {
  border-color: #6366f1;
  background: #1e293b;
  color: #a5b4fc;
}

:root[data-theme="dark"] .quick-reply-btn:hover:not(:disabled) {
  background: #6366f1;
  color: #ffffff;
}

:root[data-theme="dark"] .quick-reply-btn:disabled {
  border-color: #4b5563;
  color: #6b7280;
}

/* Modal */
:root[data-theme="dark"] .modal-backdrop {
  background: rgba(0, 0, 0, 0.6);
}

:root[data-theme="dark"] .modal-container {
  background: rgba(17, 24, 39, 0.98);
  border-color: rgba(99, 102, 241, 0.22);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.6);
}

:root[data-theme="dark"] .modal-header {
  border-bottom-color: rgba(99, 102, 241, 0.18);
  background: rgba(17, 24, 39, 0.9);
}

:root[data-theme="dark"] .modal-header h2 {
  color: #f8fafc;
}

:root[data-theme="dark"] .modal-close-btn {
  color: #94a3b8;
}

:root[data-theme="dark"] .modal-close-btn:hover {
  background: rgba(99, 102, 241, 0.15);
  color: #f1f5f9;
}

:root[data-theme="dark"] .modal-intro {
  color: #cbd5e1;
}

:root[data-theme="dark"] .privacy-section {
  background: rgba(99, 102, 241, 0.05);
  border-color: rgba(99, 102, 241, 0.12);
}

:root[data-theme="dark"] .privacy-section:hover {
  border-color: rgba(99, 102, 241, 0.2);
  background: rgba(99, 102, 241, 0.08);
}

:root[data-theme="dark"] .privacy-section-title {
  color: #f8fafc;
}

:root[data-theme="dark"] .privacy-list {
  color: #cbd5e1;
}

:root[data-theme="dark"] .privacy-list li strong {
  color: #f8fafc;
}

:root[data-theme="dark"] .consent-checkbox-wrapper {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.2);
}

:root[data-theme="dark"] .consent-checkbox-wrapper:hover {
  background: rgba(34, 197, 94, 0.12);
  border-color: rgba(34, 197, 94, 0.3);
}

:root[data-theme="dark"] .consent-checkbox-wrapper span {
  color: #cbd5e1;
}

:root[data-theme="dark"] .modal-actions {
  border-top-color: rgba(99, 102, 241, 0.18);
  background: rgba(17, 24, 39, 0.9);
}

/* Warnings */
:root[data-theme="dark"] .warning-banner {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.3);
  color: #fef08a;
}

:root[data-theme="dark"] .risk-high {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

:root[data-theme="dark"] .risk-moderate {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.3);
  color: #fde047;
}

/* Mobile responsive adjustments */
@media (max-width: 800px) {
  .theme-toggle-btn {
    top: 12px;
    right: 12px;
    width: 38px;
    height: 38px;
  }
}