/* Dark theme variables and modern redesign */

:root {
  /* Mobile Safe Area Support */
  --safe-area-inset-top: env(safe-area-inset-top);
  --safe-area-inset-right: env(safe-area-inset-right);
  --safe-area-inset-bottom: env(safe-area-inset-bottom);
  --safe-area-inset-left: env(safe-area-inset-left);
  --dark-bg: #343638;
  --dark-card-bg: #3C4245;
  --dark-text-primary: #FFFFFF;
  --dark-text-secondary: #FFFFFFB2;
  --dark-text-placeholder: #FFFFFF66;
  --dark-border: #3a3a3a;
  --brand-1: #FEC3C7;
  --brand-2: #9AD7F3;
  --brand-3: #94EFD5;
  --dark-hover: #3C4245;
  --dark-shadow: rgba(0, 0, 0, 0.3);
  --border-radius-lg: 56px;
  --border-radius-md: 24px;
  --spacing-xs: 12px;
  --spacing-sm: 20px;
  --spacing-md: 32px;
  --spacing-lg: 40px;
  --spacing-xl: 48px;
  
  /* Landing page color aliases */
  --dark-accent-blue: var(--brand-2);
  --dark-accent-light-blue: #B8E4F9;
  --dark-accent-pink: var(--brand-1);
  --dark-accent-red: #ff6b6b;
}

/* Override body for dark theme */
body {
  background: var(--dark-bg);
  color: var(--dark-text-primary);
  font-family: 'Lato', 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  /* Mobile optimizations */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: rgba(154, 215, 243, 0.3);
  touch-action: manipulation;
}

/* Dashboard container with dark theme */
.dashboard-container {
  min-height: 100vh;
  background: var(--dark-bg);
}

/* Header with modern dark styling */
.dashboard-header {
  background: var(--dark-bg);
  border-bottom: 1px solid var(--dark-border);
  padding: var(--spacing-md) 0;
  margin-bottom: 0;
}

.dashboard-nav {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.user-email {
  color: var(--dark-text-secondary);
  font-size: 0.9rem;
  display: none;
}

/* Sign out button with modern styling - specific to dashboard */
.dashboard-nav .btn-danger {
  background: var(--dark-card-bg);
  color: var(--dark-text-secondary);
  border: 1px solid var(--dark-border);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
  width: auto;
  text-decoration: none;
  text-transform: none;
  letter-spacing: normal;
  white-space: nowrap;
}

.dashboard-nav .btn-danger:hover {
  background: var(--dark-hover);
  color: var(--dark-text-primary);
  transform: none;
  box-shadow: none;
}

/* Main content area */
.dashboard-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

/* Page header */
.page-header {
  margin-bottom: var(--spacing-xl);
}

.page-title {
  font-size: clamp(1.5rem, 3vw + 1rem, 2rem);
  font-weight: 600;
  color: var(--dark-text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: clamp(1.2, 1.3, 1.4);
}

/* Conversations grid */
.conversations-section {
  margin-top: 0;
}

.section-title {
  font-size: clamp(1.25rem, 2.5vw + 0.5rem, 1.5rem);
  font-weight: 600;
  color: var(--dark-text-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
}

.conversations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

/* Start from scratch card */
.start-card {
  background: var(--dark-card-bg);
  border: 1px solid var(--dark-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md) var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: all 0.2s ease;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  gap: var(--spacing-md);
}

.start-card:hover {
  background: var(--dark-hover);
  border-color: var(--brand-2);
  transform: translateY(-2px);
}

.start-card-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.start-card-title {
  font-family: 'Lato';
  font-size: clamp(1.5rem, 3vw + 0.5rem, 1.75rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--dark-text-primary);
}

.start-card-subtitle {
  font-family: 'Lato';
  font-size: 16px;
  font-weight: 400;
  line-height: 100%;
  color: var(--dark-text-secondary);
}

.start-card-button {
  background: #00000066;
  color: var(--dark-text-primary);
}

.start-card-button:hover {
  background: var(--brand-2);
  border-color: var(--brand-2);
}

/* Conversation cards */
.conversation-card {
  border: none;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all 0.2s ease;
  position: relative;
  background: var(--brand-2);
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md) var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  justify-content: space-between;
}

.conversation-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--dark-shadow);
}

.conversation-link {
  display: block;
  text-decoration: none;
}

.flag-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: white 4px solid;
}

.button-icon {
  width: 24px;
  height: 24px;
}

.flag-placeholder {
  font-size: 1.25rem;
}

.conversation-card .language-name {
  font-size: clamp(1.5rem, 3vw + 0.5rem, 1.75rem);
  font-weight: 700;
  color: black;
  line-height: 1.1;
  font-family: 'Lato';
}

.conversation-card-header {
  display: flex;
  align-items: center;
  justify-content: start;
  gap: var(--spacing-sm);
}

.conversation-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.conversation-date {
  font-size: 16px;
  color: #000000B2;
  font-weight: 400;
  line-height: 100%;
  font-family: 'Lato';
}

.conversation-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: space-between;
}

.continue-btn {
  background: #00000066;
  color: white;
}

.continue-btn:hover {
  background: #00000080;
}

.icon-btn {
  border: none;
  border-radius: var(--border-radius-md);
  padding: clamp(var(--spacing-sm), 2vw, var(--spacing-md));
  text-decoration: none;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-weight: 500;
  font-size: clamp(0.8rem, 1.5vw + 0.5rem, 0.875rem);
  line-height: 1.3;
  letter-spacing: 0%;
  min-height: 44px;
  min-width: 44px;
}

.delete-btn {
  background: var(--brand-1);
  color: black;
}

.delete-btn:hover {
  background: #F8A5A8;
}

/* Remove old welcome card styles for new layout */
.welcome-card {
  display: none;
}

/* Logo styling */
.dashboard-nav img,
.landing-page .header-container img {
  height: 7.5rem;
  width: auto;
  object-fit: contain;
}

/* Responsive design */
@media (max-width: 1024px) {
  .conversations-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .dashboard-nav {
    padding: 0 var(--spacing-sm);
  }
  
  .dashboard-content {
    padding: var(--spacing-md) var(--spacing-sm);
  }
  
  .conversations-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .page-title {
    font-size: 1.75rem;
  }
  
  .user-email {
    display: none;
  }
}

@media (min-width: 768px) {
  .user-email {
    display: block;
  }
}

/* Landing Page Styles */
.landing-page {
  background: var(--dark-bg);
  min-height: 100vh;
  color: var(--dark-text-primary);
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Landing Header */
.landing-page .header {
  padding: var(--spacing-md) 0;
  position: relative;
  z-index: 10;
}

.landing-page .header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.landing-page .nav-buttons {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.landing-page .btn {
  padding: 0.75rem 1.5rem;
  border-radius: 20px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  display: inline-block;
}

.landing-page .btn-primary {
  background: var(--dark-accent-blue);
  color: white;
  white-space: nowrap;
}

.landing-page .btn-primary:hover {
  background: var(--dark-accent-light-blue);
  transform: translateY(-1px);
}

/* Responsive form layout - mobile first */
.landing-page .email-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.landing-page .email-form .form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.landing-page .email-form .btn-primary {
  padding: clamp(0.875rem, 2vw, 1rem) clamp(1.5rem, 3vw, 2rem);
  border-radius: clamp(16px, 3vw, 20px);
  font-size: clamp(0.9rem, 2vw + 0.5rem, 1rem);
  font-weight: 600;
  min-height: 44px;
  width: 100%;
}

/* Desktop: side-by-side layout */
@media (min-width: 640px) {
  .landing-page .email-form .form-group {
    flex-direction: row;
    align-items: stretch;
  }
  
  .landing-page .email-form .email-input {
    flex: 1;
    margin-right: var(--spacing-sm);
  }
  
  .landing-page .email-form .btn-primary {
    width: auto;
    min-width: 180px;
    flex-shrink: 0;
  }
}

.landing-page .btn-secondary {
  background: transparent;
  color: var(--dark-text-primary);
  border: 1px solid var(--dark-border);
}

.landing-page .btn-secondary:hover {
  background: var(--dark-hover);
}

/* Hero Section */
.landing-page .hero {
  padding: 4rem 0 6rem;
  position: relative;
  overflow: hidden;
}

.landing-page .hero-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.landing-page .hero-content {
  max-width: 600px;
}

.landing-page .hero-title {
  font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
  font-weight: 700;
  line-height: clamp(1.1, 1.2, 1.3);
  margin-bottom: clamp(1rem, 3vw, 2rem);
  color: var(--dark-text-primary);
}

.landing-page .hero-title .highlight {
  color: var(--dark-accent-blue);
}

.landing-page .hero-subtitle {
  font-size: clamp(1rem, 2.5vw + 0.5rem, 1.3rem);
  line-height: clamp(1.4, 1.6, 1.7);
  color: var(--dark-text-secondary);
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

/* Hero Form */
.landing-page .hero-form {
  margin-bottom: 1rem;
}

.landing-page .email-form .form-group {
  position: relative;
  margin-bottom: var(--spacing-sm);
}

.landing-page .email-input {
  width: 100%;
  padding: clamp(1rem, 2vw, 1.5rem) clamp(1rem, 2vw, 2rem);
  border: 1px solid var(--dark-border);
  border-radius: clamp(16px, 3vw, 24px);
  font-size: clamp(1rem, 2vw + 0.5rem, 1.2rem);
  background: var(--dark-card-bg);
  color: var(--dark-text-primary);
  box-sizing: border-box;
  min-height: 44px;
}

.landing-page .email-input::placeholder {
  color: var(--dark-text-secondary);
}

.landing-page .email-input:focus {
  outline: none;
  background: var(--dark-hover);
  border-color: var(--dark-accent-blue);
  box-shadow: 0 0 0 2px rgba(79, 172, 254, 0.2);
}

.landing-page .privacy-note {
  color: var(--dark-text-secondary);
  font-size: 1rem;
  margin-top: 1rem;
}

/* Hero Image */
.landing-page .hero-image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.landing-page .people-illustration {
  max-width: 100%;
  height: auto;
  position: relative;
  z-index: 2;
}

/* Clouds with updated colors */
.landing-page .cloud {
  position: absolute;
  background: rgba(79, 172, 254, 0.1);
  border-radius: 50px;
  opacity: 0.6;
}

.landing-page .cloud::before,
.landing-page .cloud::after {
  content: '';
  position: absolute;
  background: rgba(79, 172, 254, 0.1);
  border-radius: 50px;
}

.landing-page .cloud-1 {
  width: 80px;
  height: 30px;
  top: 20%;
  right: 10%;
  animation: float 6s ease-in-out infinite;
}

.landing-page .cloud-1::before {
  width: 50px;
  height: 40px;
  top: -20px;
  left: 10px;
}

.landing-page .cloud-1::after {
  width: 60px;
  height: 35px;
  top: -15px;
  right: 15px;
}

.landing-page .cloud-2 {
  width: 60px;
  height: 25px;
  top: 60%;
  left: 5%;
  animation: float 8s ease-in-out infinite;
  animation-delay: -2s;
}

.landing-page .cloud-2::before {
  width: 40px;
  height: 30px;
  top: -15px;
  left: 8px;
}

.landing-page .cloud-2::after {
  width: 45px;
  height: 28px;
  top: -12px;
  right: 10px;
}

.landing-page .cloud-3 {
  width: 70px;
  height: 28px;
  top: 40%;
  right: 25%;
  animation: float 7s ease-in-out infinite;
  animation-delay: -4s;
}

.landing-page .cloud-3::before {
  width: 45px;
  height: 35px;
  top: -18px;
  left: 12px;
}

.landing-page .cloud-3::after {
  width: 55px;
  height: 32px;
  top: -14px;
  right: 12px;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

/* Features Section */
.landing-page .features {
  padding: 4rem 0;
  margin-top: 2rem;
}

.landing-page .features-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.landing-page .feature-card {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  position: relative;
  backdrop-filter: blur(10px);
}

.landing-page .feature-pink {
  background: var(--brand-1);
}

.landing-page .feature-blue {
  background: var(--brand-2);
}

.landing-page .feature-green {
  background: var(--brand-3);
}

.landing-page .feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: white;
}

.landing-page .feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: #2D3748;
}

.landing-page .feature-card p {
  color: #4A5568;
  line-height: 1.5;
  font-size: 0.95rem;
}

/* Error messages */
.landing-page .error-messages {
  margin-top: var(--spacing-sm);
}

.landing-page .error-message {
  color: var(--dark-accent-red);
  font-size: 0.9rem;
  margin: 0.25rem 0;
}

/* Responsive Design for Landing Page */
@media (max-width: 1024px) {
  .landing-page .hero-container {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .landing-page .hero-content {
    max-width: none;
  }
  
  .landing-page .features-container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  .landing-page .header-container {
    padding: 0 var(--spacing-sm);
  }
  
  .landing-page .nav-buttons {
    gap: 0.5rem;
  }
  
  .landing-page .btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.85rem;
  }
  
  .landing-page .hero {
    padding: 2rem 0 4rem;
  }
  
  .landing-page .hero-container {
    padding: 0 var(--spacing-sm);
    gap: 2rem;
  }
  
  /* Typography is now handled by clamp() in base styles */
  
  .landing-page .email-form .form-group {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .landing-page .features {
    padding: 2rem 0;
  }
  
  .landing-page .features-container {
    padding: 0 var(--spacing-sm);
  }
  
  .landing-page .feature-card {
    padding: 1.5rem;
  }
}

/* Authentication Pages Dark Theme Override */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  background: var(--dark-bg);
}

.auth-card {
  background: var(--dark-card-bg);
  padding: 2.5rem;
  border-radius: var(--border-radius-md);
  box-shadow: 0 20px 40px var(--dark-shadow);
  width: 100%;
  max-width: 420px;
  border: 1px solid var(--dark-border);
}

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

.auth-header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark-text-primary);
  margin-bottom: 0.5rem;
}

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


/* Button overrides for auth pages */
.auth-card .btn {
  width: 100%;
  padding: 0.875rem 1rem;
  border: none;
  border-radius: var(--border-radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-block;
  text-align: center;
  box-sizing: border-box;
}

.auth-card .btn-primary {
  background: var(--dark-accent-blue);
  color: white;
}

.auth-card .btn-primary:hover {
  background: var(--dark-accent-light-blue);
  transform: translateY(-1px);
  box-shadow: 0 5px 15px rgba(79, 172, 254, 0.3);
}

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

.auth-card .btn-secondary:hover {
  background: var(--dark-card-bg);
  border-color: var(--dark-accent-blue);
}

/* Alert styles for dark theme */
.auth-card .alert {
  padding: 1rem;
  border-radius: var(--border-radius-md);
  margin-top: 1rem;
  font-size: 0.9rem;
  position: relative;
}

.auth-card .alert-error {
  background: rgba(255, 107, 107, 0.1);
  color: var(--dark-accent-red);
  border: 1.35px solid;
  border-image-source: linear-gradient(155deg, var(--dark-accent-red) 2%, rgba(255, 107, 107, 0.0001) 40%, rgba(255, 107, 107, 0.0001) 55%, rgba(255, 107, 107, 0.4) 95%);
}

.auth-card .alert-success {
  background: rgba(72, 187, 120, 0.1);
  color: #4ade80;
  border: 1.35px solid;
  border-image-source: linear-gradient(155deg, #4ade80 2%, rgba(72, 187, 120, 0.0001) 40%, rgba(72, 187, 120, 0.0001) 55%, rgba(72, 187, 120, 0.4) 95%);
}

.auth-card .alert ul {
  margin: 0;
  padding-left: 1.5rem;
}

/* Auth links */
.auth-links {
  text-align: center;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--dark-border);
}

.auth-links p {
  color: var(--dark-text-secondary);
  margin: 0;
}

.auth-links a {
  color: var(--dark-accent-blue);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.auth-links a:hover {
  color: var(--dark-accent-light-blue);
}

/* Responsive design for auth pages */
@media (max-width: 768px) {
  .auth-card {
    padding: 2rem;
  }
}

/* Mobile-specific utility classes */
@media (max-width: 768px) {
  .mobile-full-width {
    width: 100vw;
    margin-left: calc(-50vw + 50%);
  }
  
  .mobile-safe-padding {
    padding-left: max(var(--spacing-sm), var(--safe-area-inset-left));
    padding-right: max(var(--spacing-sm), var(--safe-area-inset-right));
  }
  
  .mobile-safe-bottom {
    padding-bottom: max(var(--spacing-sm), var(--safe-area-inset-bottom));
  }
}

/* Improve mobile scrolling performance */
.messages-container,
.conversation-main {
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}

/* Better mobile button states */
button, .btn, .language-btn, .language-label {
  -webkit-tap-highlight-color: rgba(154, 215, 243, 0.3);
  user-select: none;
}