/* MoodBeats - Main Styles */

:root {
  /* Colors */
  --primary-color: #667eea;
  --primary-dark: #5a67d8;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;
  --text-primary: #2d3748;
  --text-secondary: #4a5568;
  --text-light: #a0aec0;
  --bg-body: #f7fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --success-color: #48bb78;
  --warning-color: #ed8936;
  --danger-color: #f56565;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  color: white;
}

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

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-lg);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* App Container */
.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-md);
}

/* Header */
.app-header {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-xl);
  overflow: hidden;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
}

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

.logo i {
  font-size: var(--font-size-2xl);
  color: var(--primary-color);
}

.logo h1 {
  font-size: var(--font-size-2xl);
  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-actions {
  display: flex;
  gap: var(--space-sm);
}

.icon-button {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--bg-body);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.icon-button:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

/* Main Content */
.main-content {
  display: grid;
  gap: var(--space-xl);
}

/* Card Base */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-header h2 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.section-header h2 i {
  color: var(--primary-color);
}

.section-header p {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
}

/* Buttons */
.primary-button {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

.primary-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.secondary-button {
  background: var(--bg-body);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.danger-button {
  background: var(--danger-color);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.danger-button:hover {
  background: #e53e3e;
  transform: translateY(-1px);
}

.full-width {
  width: 100%;
  justify-content: center;
}

/* Form Elements */
textarea {
  width: 100%;
  min-height: 100px;
  padding: var(--space-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  resize: vertical;
  transition: all var(--transition-fast);
}

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

select {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: white;
  font-size: var(--font-size-base);
}

input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary-color);
}

label {
  font-weight: 500;
  margin-bottom: var(--space-sm);
  display: block;
  color: var(--text-primary);
}

/* Modal Styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

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

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  overflow: hidden;
  transform: scale(0.8);
  transition: all var(--transition-normal);
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.close-button {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--bg-body);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.close-button:hover {
  background: var(--danger-color);
  color: white;
}

.modal-body {
  padding: var(--space-xl);
  overflow-y: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
  .app-container {
    padding: var(--space-sm);
  }
  
  .header-content {
    padding: var(--space-md);
  }
  
  .logo h1 {
    font-size: var(--font-size-xl);
  }
  
  .card {
    padding: var(--space-lg);
  }
  
  .modal-content {
    width: 95%;
    margin: var(--space-md);
  }
  
  .modal-header,
  .modal-body {
    padding: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .header-content {
    flex-direction: column;
    gap: var(--space-md);
  }
  
  .header-actions {
    order: -1;
  }
  
  .section-header h2 {
    font-size: var(--font-size-xl);
  }
  
  .primary-button,
  .secondary-button {
    padding: var(--space-md);
    font-size: var(--font-size-sm);
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-light: #a0aec0;
    --bg-body: #1a202c;
    --bg-card: #2d3748;
    --border-color: #4a5568;
  }
}

/* Animation Utilities */
.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

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

.slide-up {
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

/* Focus Management */
.focus-trap {
  outline: none;
}

/* Print Styles */
@media print {
  .app-header,
  .icon-button,
  .primary-button,
  .secondary-button {
    display: none;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}