/* CSS Variables for theming */
:root {
  /* Light theme colors */
  --primary-color: #667eea;
  --primary-dark: #5a6fd8;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;

  --bg-gradient-start: #667eea;
  --bg-gradient-end: #764ba2;
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --surface-hover: #f1f5f9;

  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;

  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --info-color: #3b82f6;
}

/* Dark theme colors */
body.dark-theme {
  --bg-gradient-start: #1e293b;
  --bg-gradient-end: #334155;
  --bg-color: #0f172a;
  --surface-color: #1e293b;
  --surface-hover: #334155;

  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  --border-color: #334155;
  --border-hover: #475569;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: all 0.3s ease;
}

/* Screen management */
.screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

.screen.active {
  opacity: 1;
  visibility: visible;
  z-index: 10;
}

/* Intro Screen */
.intro-screen {
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  color: white;
  text-align: center;
}

.intro-content {
  max-width: 600px;
  padding: 3rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2rem;
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.intro-animation {
  position: relative;
  margin-bottom: 2rem;
}

.intro-logo-icon {
  font-size: 5rem;
  display: block;
  animation: float 3s ease-in-out infinite;
}

.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.float-element {
  position: absolute;
  font-size: 2rem;
  opacity: 0.7;
  animation: floatAround 6s ease-in-out infinite;
}

.float-element:nth-child(1) {
  top: 20%;
  left: 20%;
  animation-delay: 0s;
}

.float-element:nth-child(2) {
  top: 30%;
  right: 20%;
  animation-delay: 2s;
}

.float-element:nth-child(3) {
  bottom: 20%;
  left: 30%;
  animation-delay: 4s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

@keyframes floatAround {
  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(10px, -10px) rotate(90deg);
  }
  50% {
    transform: translate(-10px, -20px) rotate(180deg);
  }
  75% {
    transform: translate(-20px, 10px) rotate(270deg);
  }
}

.intro-content h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(45deg, #fff, #f0f0f0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.intro-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  line-height: 1.7;
}

/* Auth Screen */
.auth-screen {
  background: var(--bg-color);
  padding: 2rem;
}

.auth-container {
  width: 100%;
  max-width: 450px;
  background: var(--surface-color);
  border-radius: 1.5rem;
  padding: 2.5rem;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.auth-logo .logo-icon {
  font-size: 2.5rem;
}

.auth-logo h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.auth-tabs {
  display: flex;
  background: var(--surface-hover);
  border-radius: 0.75rem;
  padding: 0.25rem;
  margin-bottom: 2rem;
}

.auth-tab {
  flex: 1;
  padding: 0.75rem 1rem;
  border: none;
  background: transparent;
  border-radius: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.auth-tab.active {
  background: var(--surface-color);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
}

.input-group {
  margin-bottom: 1.5rem;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  z-index: 2;
}

.input-wrapper input {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  border: 2px solid var(--border-color);
  border-radius: 0.75rem;
  font-size: 1rem;
  background: var(--surface-color);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.input-wrapper input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.password-toggle {
  position: absolute;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.25rem;
  transition: color 0.2s ease;
}

.password-toggle:hover {
  color: var(--text-secondary);
}

.auth-divider {
  text-align: center;
  margin: 1.5rem 0;
  position: relative;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.auth-divider::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-color);
  z-index: 1;
}

.auth-divider span {
  background: var(--surface-color);
  padding: 0 1rem;
  position: relative;
  z-index: 2;
}

.social-auth {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: #4285f4;
  color: #fff;
  font-weight: 600;
  font-size: 1.05rem;
  border: none;
  border-radius: 1rem;
  padding: 0.75rem 2rem;
  box-shadow: 0 2px 8px rgba(66, 133, 244, 0.08);
  width: 100%;
  max-width: 320px;
  margin: 1.5rem auto;
  transition: background 0.2s, box-shadow 0.2s;
}

.btn-google:hover,
.btn-google:focus {
  background: #357ae8;
  box-shadow: 0 4px 16px rgba(66, 133, 244, 0.16);
  outline: none;
}

.btn-google i {
  font-size: 1.3em;
  background: #fff;
  color: #4285f4;
  border-radius: 50%;
  padding: 2px 6px;
  margin-right: 4px;
  min-width: 28px;
  text-align: center;
}

/* Center the social-auth container */
.social-auth {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

/* Phone Modal */
.phone-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.phone-modal.active {
  opacity: 1;
  visibility: visible;
}

.phone-modal-content {
  background: var(--surface-color);
  border-radius: 1rem;
  padding: 2rem;
  width: 90%;
  max-width: 400px;
  box-shadow: var(--shadow-xl);
}

.phone-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.phone-modal-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

.close-modal {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.25rem;
  transition: color 0.2s ease;
}

.close-modal:hover {
  color: var(--text-primary);
}

.otp-inputs {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin: 1.5rem 0;
}

.otp-input {
  width: 3rem;
  height: 3rem;
  text-align: center;
  border: 2px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  background: var(--surface-color);
  color: var(--text-primary);
  transition: border-color 0.2s ease;
}

.otp-input:focus {
  outline: none;
  border-color: var(--primary-color);
}

/* Main Screen */
.main-screen {
  background: var(--bg-color);
  padding: 0;
  align-items: stretch;
}

.app-container {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.app-header {
  background: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-sm);
}

.header-left .logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  font-size: 2rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-8px);
  }
  60% {
    transform: translateY(-4px);
  }
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-menu {
  position: relative;
}

.user-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.user-avatar:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
}

.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.5rem;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  z-index: 100;
}

.user-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-info {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.user-name {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
}

.user-email {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.dropdown-item {
  width: 100%;
  padding: 0.75rem 1rem;
  border: none;
  background: none;
  text-align: left;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background-color 0.2s ease;
}

.dropdown-item:hover {
  background: var(--surface-hover);
}

.app-main {
  flex: 1;
  overflow-y: auto;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}

/* Cards */
.card {
  background: var(--surface-color);
  border-radius: 1rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  transition: all 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-header {
  padding: 1.5rem 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.card-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Subject Card */
.subject-selector {
  padding: 0 1.5rem 1.5rem;
}

.subject-dropdown {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: 0.75rem;
  background: var(--surface-color);
  color: var(--text-primary);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.subject-dropdown:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Question Card */
.question-input {
  padding: 0 1.5rem 1.5rem;
}

.question-input textarea {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: 0.75rem;
  background: var(--surface-color);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  resize: vertical;
  min-height: 120px;
  transition: all 0.2s ease;
}

.question-input textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.question-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  gap: 1rem;
}

.input-hints {
  flex: 1;
}

.hint {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Response Card */
.response-content {
  padding: 0 1.5rem 1.5rem;
  background: var(--surface-hover);
  border-radius: 0.75rem;
  margin: 0 1.5rem 1.5rem;
  font-size: 1rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-wrap: break-word;
  border-left: 4px solid var(--primary-color);
}

/* Example Questions */
.example-questions {
  padding: 0 1.5rem 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.example-btn {
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: 0.75rem;
  background: var(--surface-color);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
}

.example-btn:hover {
  border-color: var(--primary-color);
  background: var(--surface-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.example-btn i {
  color: var(--primary-color);
  font-size: 1.25rem;
}

/* History Card */
.history-list {
  padding: 0 1.5rem 1.5rem;
}

.history-item {
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  margin-bottom: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--surface-hover);
}

.history-item:hover {
  border-color: var(--primary-color);
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
}

.history-question {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.history-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.history-subject {
  background: var(--primary-color);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 500;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.75rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--surface-hover);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--border-color);
  transform: translateY(-1px);
}

.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: 50%;
  background: var(--surface-hover);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-icon:hover {
  background: var(--border-color);
  transform: scale(1.05);
}

.btn-large {
  padding: 1.25rem 2.5rem;
  font-size: 1.125rem;
  border-radius: 1rem;
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-full {
  width: 100%;
}

.btn-text {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff; /* Ensure text is visible */
    opacity: 1;
}

.btn-loading {
    display: none;
    vertical-align: middle;
}

/* Show loading when parent has .loading class */
.btn.loading .btn-text {
    display: none;
}
.btn.loading .btn-loading {
    display: inline-block;
}

/* Clear All Button */
.btn-clear-all {
    background: #fff;
    color: #222;
    font-weight: 700;
    border: 1px solid #e2e8f0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    border-radius: 0.75rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.btn-clear-all:hover,
.btn-clear-all:focus {
    background: #f1f5f9;
    color: #111;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    outline: none;
}

/* Notifications */
.notification-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.notification {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: 0.75rem;
  box-shadow: var(--shadow-lg);
  max-width: 400px;
  animation: slideIn 0.3s ease-out;
  border: 1px solid transparent;
}

.notification-success {
  background: var(--success-color);
  color: white;
}

.notification-error {
  background: var(--error-color);
  color: white;
}

.notification-info {
  background: var(--info-color);
  color: white;
}

.notification-warning {
  background: var(--warning-color);
  color: white;
}

.notification-close {
  background: none;
  border: none;
  color: currentColor;
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 0.25rem;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.notification-close:hover {
  opacity: 1;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Fade In/Out Animations */
.fade-in {
    animation: fadeIn 1s forwards;
}
.fade-out {
    animation: fadeOut 1s forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes fadeOut {
    from { opacity: 1; }
    to   { opacity: 0; }
}

/* Responsive Design */
@media (max-width: 768px) {
  .intro-content {
    padding: 2rem;
    margin: 1rem;
  }

  .intro-content h1 {
    font-size: 2.5rem;
  }

  .intro-content p {
    font-size: 1.1rem;
  }

  .auth-container {
    margin: 1rem;
    padding: 2rem;
  }

  .social-auth {
    grid-template-columns: 1fr;
  }

  .app-header {
    padding: 1rem;
  }

  .logo h1 {
    font-size: 1.25rem;
  }

  .app-main {
    padding: 1rem;
    gap: 1rem;
  }

  .question-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .example-questions {
    grid-template-columns: 1fr;
  }

  .history-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .notification-container {
    left: 1rem;
    right: 1rem;
  }

  .notification {
    max-width: none;
  }
}

@media (max-width: 480px) {
  .intro-content {
    padding: 1.5rem;
  }

  .intro-content h1 {
    font-size: 2rem;
  }

  .intro-logo-icon {
    font-size: 4rem;
  }

  .auth-container {
    padding: 1.5rem;
  }

  .app-header {
    padding: 0.75rem;
  }

  .app-main {
    padding: 0.75rem;
  }

  .card-header {
    padding: 1rem 1rem 0;
  }

  .subject-selector,
  .question-input,
  .response-content,
  .example-questions,
  .history-list {
    padding: 0 1rem 1rem;
  }

  .response-content {
    margin: 0 1rem 1rem;
  }

  .otp-inputs {
    gap: 0.25rem;
  }

  .otp-input {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1rem;
  }
}

/* Print Styles */
@media print {
  .screen:not(.main-screen) {
    display: none !important;
  }

  .main-screen {
    position: static;
    height: auto;
  }

  .app-container {
    height: auto;
  }

  .app-header,
  .examples-card,
  .history-card {
    display: none !important;
  }

  .app-main {
    padding: 0;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles for keyboard navigation */
.btn:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000;
    --text-secondary: #000;
  }

  body.dark-theme {
    --border-color: #fff;
    --text-secondary: #fff;
  }
}