/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #500000;
  --secondary-color: #666666;
  --success-color: #4caf50;
  --error-color: #f44336;
  --text-color: #333;
  --light-bg: #F5F5F5;
  --border-color: #D6D6D6;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --spacing-unit: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell',
    'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  background: linear-gradient(135deg, #FFFFFF 0%, #F5F5F5 100%);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
}

/* Screen Management */
.screen {
  display: flex;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.screen.hidden {
  display: none;
  opacity: 0;
}

/* Auth Screen */
#auth-screen {
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-unit) * 2;
}

.auth-container {
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: calc(var(--spacing-unit) * 6);
  max-width: 400px;
  text-align: center;
}

.auth-container h1 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.tagline {
  font-size: 1.1rem;
  color: #666;
  margin-bottom: calc(var(--spacing-unit) * 1);
}

.tagline-secondary {
  font-size: 1rem;
  color: #666;
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.header-subtitle {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
  margin-top: calc(var(--spacing-unit) * 0.5);
}

/* App Screen */
#app-screen {
  flex-direction: column;
  min-height: 100vh;
}

.header {
  background-image:
    linear-gradient(135deg, rgba(80, 0, 0, 0.4) 0%, rgba(60, 0, 0, 0.4) 100%),
    url('aggie_jokes_header.png');
  background-size: cover;
  background-position: center;
  background-repeat: repeat-x;
  color: white;
  padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 2);
  box-shadow: var(--shadow);
  border-bottom: 4px solid var(--secondary-color);
  position: relative;
}

.header-content {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: calc(var(--spacing-unit) * 2);
}

.header h1 {
  font-size: 2rem;
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.container {
  flex: 1;
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
  padding: calc(var(--spacing-unit) * 3);
}

/* Tab Navigation */
.tab-navigation {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  margin-bottom: calc(var(--spacing-unit) * 3);
  border-bottom: 2px solid var(--border-color);
  padding-bottom: calc(var(--spacing-unit) * 1.5);
}

.tab-button {
  padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 1.5);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: #999;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: calc(var(--spacing-unit) * -1.5);
  position: relative;
}

.tab-button:hover {
  color: var(--primary-color);
}

.tab-button.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

/* Tab Content */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Generate Section */
.generate-section {
  background: white;
  padding: calc(var(--spacing-unit) * 3.5);
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.generate-header {
  margin-bottom: calc(var(--spacing-unit) * 2.5);
}

.generate-section h2 {
  font-size: 1.6rem;
  color: var(--primary-color);
  margin: 0;
  font-weight: 700;
}

.generate-subtitle {
  font-size: 0.95rem;
  color: #666;
  margin-top: calc(var(--spacing-unit) * 1);
  margin-bottom: 0;
}

.generate-box {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.generate-input {
  flex: 1;
  padding: calc(var(--spacing-unit) * 1.5);
  border: 2px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.generate-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(80, 0, 0, 0.1);
}

.generate-hint {
  font-size: 0.9rem;
  color: #999;
}

/* Feedback Section */
.feedback-section {
  background: white;
  padding: calc(var(--spacing-unit) * 3.5);
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.feedback-header {
  margin-bottom: calc(var(--spacing-unit) * 3.5);
}

.feedback-section h2 {
  font-size: 1.6rem;
  color: var(--primary-color);
  margin: 0;
  font-weight: 700;
}

.feedback-subtitle {
  font-size: 0.95rem;
  color: #666;
  margin-top: calc(var(--spacing-unit) * 1);
  margin-bottom: 0;
}

.feedback-form {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit) * 2);
}

.ratings-section h3 {
  font-size: 1.2rem;
  color: var(--primary-color);
  margin: 0 0 calc(var(--spacing-unit) * 2.5) 0;
  font-weight: 700;
}

.rating-item {
  margin-bottom: calc(var(--spacing-unit) * 2.5);
}

.rating-item label {
  display: block;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: calc(var(--spacing-unit) * 1);
  font-size: 0.95rem;
}

.star-rating {
  display: flex;
  gap: calc(var(--spacing-unit) * 0.5);
  font-size: 2rem;
}

.star {
  cursor: pointer;
  color: #ddd;
  transition: color 0.2s ease, transform 0.2s ease;
  user-select: none;
}

.star:hover {
  color: var(--secondary-color);
  transform: scale(1.15);
}

.star.active {
  color: #ffd700;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit) * 0.75);
  margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.form-group label {
  font-weight: 600;
  color: var(--text-color);
  font-size: 0.95rem;
}

.form-select,
.form-textarea {
  padding: calc(var(--spacing-unit) * 1.25);
  border: 2px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.3s ease;
  resize: vertical;
}

.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(80, 0, 0, 0.1);
}

.char-count {
  font-size: 0.8rem;
  color: #999;
  text-align: right;
}

.feedback-hint {
  font-size: 0.9rem;
  color: #999;
  text-align: center;
  margin-top: calc(var(--spacing-unit) * 1);
}

.feedback-success {
  background: #e8f5e9;
  border: 2px solid var(--success-color);
  border-radius: 12px;
  padding: calc(var(--spacing-unit) * 3);
  text-align: center;
}

.feedback-success h3 {
  color: var(--success-color);
  font-size: 1.3rem;
  margin: 0 0 calc(var(--spacing-unit) * 1) 0;
}

.feedback-success p {
  color: #2e7d32;
  margin: 0;
}

.feedback-success.hidden {
  display: none;
}

/* Buttons */
.btn {
  padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 600;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--primary-color);
  color: white;
  width: 100%;
  font-size: 1.1rem;
  padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
}

.btn-primary:hover {
  background: #3a0000;
}

.btn-secondary {
  background: var(--secondary-color);
  color: white;
}

.btn-secondary:hover {
  background: #4a4a4a;
}

.btn-small {
  padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
  font-size: 0.9rem;
}

/* Search Section */
.search-section {
  background: var(--light-bg);
  padding: calc(var(--spacing-unit) * 3.5);
  border-radius: 12px;
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.search-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: calc(var(--spacing-unit) * 2.5);
  gap: calc(var(--spacing-unit) * 1.5);
}

.search-section h2 {
  font-size: 1.6rem;
  color: var(--primary-color);
  margin: 0;
  font-weight: 700;
}

.header-buttons {
  display: flex;
  gap: calc(var(--spacing-unit) * 1);
  align-items: center;
}

.dice-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  background: #F5F5F5;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.dice-button:hover {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  transform: scale(1.05) rotate(5deg);
}

.dice-button.spinning {
  animation: spin-dice 0.6s ease-in-out;
}

@keyframes spin-dice {
  0% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(1.1); }
  100% { transform: rotate(360deg) scale(1); }
}

.dice-emoji {
  display: block;
}

.salty-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  background: #F5F5F5;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.salty-toggle:hover {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  transform: scale(1.05);
}

.salty-toggle.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(80, 0, 0, 0.2);
}

.salty-emoji {
  display: block;
}

.search-box {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.search-input {
  flex: 1;
  padding: calc(var(--spacing-unit) * 1.5);
  border: 2px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(80, 0, 0, 0.1);
}

.search-hint {
  font-size: 0.9rem;
  color: #999;
}

/* Category Scroll Bar */
.category-scroll-container {
  overflow-x: auto;
  overflow-y: hidden;
  margin-top: calc(var(--spacing-unit) * 2);
  padding-bottom: calc(var(--spacing-unit) * 1.5);
  scroll-behavior: smooth;
}

.category-scroll-container::-webkit-scrollbar {
  height: 12px;
}

.category-scroll-container::-webkit-scrollbar-track {
  background: #D6D6D6;
  border-radius: 6px;
  margin: 0 calc(var(--spacing-unit) * 1);
}

.category-scroll-container::-webkit-scrollbar-thumb {
  background: var(--secondary-color);
  border-radius: 6px;
  border: 2px solid #D6D6D6;
}

.category-scroll-container::-webkit-scrollbar-thumb:hover {
  background: #4a4a4a;
}

.category-bar {
  display: flex;
  gap: calc(var(--spacing-unit) * 1.5);
  min-width: min-content;
}

.category-button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: calc(var(--spacing-unit) * 0.5);
  padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 1.5);
  background: #F5F5F5;
  border: 2px solid #D6D6D6;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  font-size: 0.85rem;
  color: var(--text-color);
  font-weight: 500;
  flex-shrink: 0;
}

.category-button:hover {
  background: var(--secondary-color);
  color: white;
  border-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.category-button.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.category-emoji {
  font-size: 1.5rem;
}

/* Results Section */
.results-section {
  background: var(--light-bg);
  padding: calc(var(--spacing-unit) * 3.5);
  border-radius: 12px;
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

.results-section h2 {
  font-size: 1.6rem;
  color: var(--primary-color);
  margin-bottom: calc(var(--spacing-unit) * 2.5);
  font-weight: 700;
}

.results-section.hidden {
  display: none;
}

.results-container {
  display: grid;
  gap: calc(var(--spacing-unit) * 2.5);
}

.saying-card {
  background: var(--light-bg);
  padding: calc(var(--spacing-unit) * 2.5) calc(var(--spacing-unit) * 2.5);
  border-radius: 8px;
  border-left: 5px solid var(--secondary-color);
  transition: all 0.3s ease;
  border: 1px solid #D6D6D6;
  border-left: 5px solid var(--secondary-color);
}

.saying-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.saying-text-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: calc(var(--spacing-unit) * 2);
  margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.saying-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-color);
  flex: 1;
  line-height: 1.4;
}

.saying-meaning {
  font-size: 0.95rem;
  color: #555;
  margin-bottom: calc(var(--spacing-unit) * 1);
  line-height: 1.5;
}

.saying-source {
  font-size: 0.8rem;
  color: #999;
  white-space: nowrap;
  flex-shrink: 0;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  font-weight: 500;
}

/* Generated Card Badge */
.generated-badge {
  display: inline-block;
  background: linear-gradient(135deg, #ffd700, #ffed4e);
  color: #333;
  font-size: 0.7rem;
  font-weight: 700;
  padding: calc(var(--spacing-unit) * 0.75) calc(var(--spacing-unit) * 1.25);
  border-radius: 4px;
  margin-bottom: calc(var(--spacing-unit) * 1.5);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  box-shadow: 0 2px 4px rgba(255, 215, 0, 0.3);
}

.generated-card {
  border-left-color: #ffd700;
  background: linear-gradient(
    135deg,
    rgba(255, 215, 0, 0.04) 0%,
    rgba(255, 237, 74, 0.04) 100%
  );
}

/* No Results */
.no-results-message {
  background: var(--light-bg);
  padding: calc(var(--spacing-unit) * 5);
  border-radius: 12px;
  border: 2px dashed var(--border-color);
  text-align: center;
  color: #999;
  font-size: 1.1rem;
}

.no-results-message.hidden {
  display: none;
}

/* Loading Spinner */
.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: calc(var(--spacing-unit) * 2);
  padding: calc(var(--spacing-unit) * 4);
}

.loading-spinner.hidden {
  display: none;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Error Message */
.error-message {
  background: #ffebee;
  border: 1px solid var(--error-color);
  color: var(--error-color);
  padding: calc(var(--spacing-unit) * 2);
  border-radius: 6px;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.error-message.hidden {
  display: none;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: calc(var(--spacing-unit) * 2.5);
  }

  .header-content {
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 1.5);
    align-items: center;
  }

  .header h1 {
    font-size: 1.6rem;
  }

  .search-box,
  .generate-box {
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 1.5);
  }

  .search-input,
  .generate-input {
    width: 100%;
  }

  .auth-container {
    padding: calc(var(--spacing-unit) * 4);
    max-width: 90%;
  }

  .auth-container h1 {
    font-size: 2rem;
  }

  .btn {
    padding: calc(var(--spacing-unit) * 1.25) calc(var(--spacing-unit) * 2);
    font-size: 0.95rem;
  }

  .category-button {
    padding: calc(var(--spacing-unit) * 0.75) calc(var(--spacing-unit) * 1.25);
    font-size: 0.8rem;
  }

  .category-emoji {
    font-size: 1.25rem;
  }

  .saying-card {
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2);
  }

  .saying-text {
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-unit: 6px;
  }

  .container {
    padding: calc(var(--spacing-unit) * 2);
  }

  .search-input {
    font-size: 16px; /* Prevent zoom on iOS */
  }

  .saying-card {
    padding: calc(var(--spacing-unit) * 1.5);
  }

  .saying-text {
    font-size: 1.1rem;
  }
}