/* ==========================================
   MoodMunch Design System
   ========================================== */

/* --- Design Tokens --- */
:root {
  /* Colors - Warm, inviting palette */
  --color-primary: #FF6B35;
  --color-primary-light: #FF8B5E;
  --color-primary-dark: #E55A28;
  
  --color-secondary: #7C3AED;
  --color-secondary-light: #A78BFA;
  
  --color-accent: #FBBF24;
  
  --color-bg: #FFFBF7;
  --color-bg-card: #FFFFFF;
  --color-bg-subtle: #FFF5EE;
  --color-bg-dark: #1F1D1B;
  
  --color-text: #1F1D1B;
  --color-text-secondary: #6B6560;
  --color-text-muted: #9A938C;
  --color-text-inverse: #FFFFFF;
  
  --color-border: #E8E2DC;
  --color-border-light: #F5F0EB;
  
  --color-success: #10B981;
  --color-error: #EF4444;
  
  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(31, 29, 27, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(31, 29, 27, 0.07), 0 2px 4px -2px rgba(31, 29, 27, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(31, 29, 27, 0.08), 0 4px 6px -4px rgba(31, 29, 27, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(31, 29, 27, 0.1), 0 8px 10px -6px rgba(31, 29, 27, 0.05);
  --shadow-glow: 0 0 20px rgba(255, 107, 53, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  --transition-bounce: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

button:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.hidden {
  display: none !important;
}

/* --- App Container --- */
.app-container {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
}

/* --- Header --- */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) 0;
  margin-bottom: var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.logo-icon {
  font-size: var(--text-2xl);
}

.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text);
}

.history-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.history-btn:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}

/* --- Main Content --- */
.main-content {
  flex: 1;
}

/* --- Hero Section --- */
.hero {
  text-align: center;
  margin-bottom: var(--space-8);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-3);
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
}

/* --- Mood Input Section --- */
.mood-input-section {
  margin-bottom: var(--space-8);
}

.mood-textarea-wrapper {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border-light);
  margin-bottom: var(--space-6);
}

.mood-textarea {
  width: 100%;
  border: none;
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  resize: none;
  background: transparent;
  color: var(--color-text);
  font-family: inherit;
}

.mood-textarea::placeholder {
  color: var(--color-text-muted);
}

.decode-btn {
  width: 100%;
  margin-top: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-inverse);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.decode-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

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

.btn-icon {
  font-size: var(--text-xl);
}

/* --- Mood Cards --- */
.mood-cards-section {
  text-align: center;
}

.mood-cards-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.mood-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}

.mood-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-2);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-bounce);
}

.mood-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.mood-card.selected {
  background: var(--color-bg-subtle);
  border-color: var(--color-primary);
}

.mood-emoji {
  font-size: var(--text-2xl);
}

.mood-label {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  font-weight: var(--font-medium);
}

/* --- Loading Section --- */
.loading-section {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.loading-content {
  text-align: center;
}

.loading-spinner {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
  position: relative;
}

.spinner-ring {
  width: 100%;
  height: 100%;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

.spinner-emoji {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: var(--text-2xl);
  animation: pulse 1.5s ease-in-out infinite;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.1); }
}

.loading-text {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.loading-subtext {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  animation: fade 2s ease-in-out infinite;
}

@keyframes fade {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* --- Results Section --- */
.results-section {
  animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.results-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.back-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.back-btn:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}

.results-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
}

.mood-summary {
  margin-bottom: var(--space-6);
}

.mood-tag {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-subtle);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* --- Recommendation Card --- */
.recommendation-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-6);
  position: relative;
}

.recommendation-card.primary {
  border: 2px solid var(--color-primary-light);
}

.rec-badge {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
  z-index: 10;
}

.rec-image {
  height: 180px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.rec-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.4) 0%, transparent 50%);
}

.rec-content {
  padding: var(--space-5);
}

.rec-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-3);
}

.rec-reason {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  font-style: italic;
  margin-bottom: var(--space-4);
}

.rec-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.rec-tag {
  padding: var(--space-1) var(--space-2);
  background: var(--color-bg-subtle);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.rec-actions {
  display: flex;
  gap: var(--space-3);
}

.action-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
}

.primary-action {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.primary-action:hover {
  background: var(--color-primary-dark);
}

.secondary-action {
  background: var(--color-bg-subtle);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.secondary-action:hover {
  background: var(--color-bg-card);
  border-color: var(--color-primary-light);
}

/* --- More Options --- */
.more-options {
  margin-bottom: var(--space-6);
}

.more-options-title {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.alt-recommendations {
  display: flex;
  gap: var(--space-4);
}

.alt-rec-card {
  flex: 1;
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.alt-rec-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.alt-rec-image {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
}

.alt-rec-content h5 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

.alt-rec-content p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* --- Share Button --- */
.share-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-bg-subtle);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.share-btn:hover {
  background: var(--color-bg-card);
  color: var(--color-text);
  box-shadow: var(--shadow-md);
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: var(--space-6) 0;
  margin-top: auto;
}

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

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-xl);
  animation: toastSlide 0.3s ease-out;
}

@keyframes toastSlide {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.toast-icon {
  width: 20px;
  height: 20px;
  background: var(--color-success);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
}

/* --- Responsive --- */
@media (max-width: 400px) {
  .mood-cards-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2);
  }
  
  .mood-card {
    padding: var(--space-2);
  }
  
  .mood-emoji {
    font-size: var(--text-xl);
  }
  
  .hero-title {
    font-size: var(--text-2xl);
  }
  
  .alt-recommendations {
    flex-direction: column;
  }
}