/* 
 * Main CSS for Color Palette Generator
 */

 :root {
  /* Color Variables */
  --color-primary: #2c3e50;
  --color-secondary: #3498db;
  --color-accent: #e74c3c;
  --color-light: #ecf0f1;
  --color-dark: #2c3e50;
  --color-success: #27ae60;
  --color-warning: #f39c12;
  --color-danger: #c0392b;
  --color-info: #3498db;
  
  /* Font Variables */
  --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-secondary: 'Arial', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Border Radius */
  --border-radius-sm: 3px;
  --border-radius-md: 5px;
  --border-radius-lg: 10px;
  
  /* Shadow */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 3px 6px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15), 0 3px 6px rgba(0, 0, 0, 0.1);
}

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

html {
  font-size: 16px;
  height: 100%;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-light);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--spacing-md);
}

/* Header & Navigation */
.main-header {
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-md) 0;
  box-shadow: var(--shadow-md);
}

.main-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  color: white;
  text-decoration: none;
}

.logo h1 {
  font-size: 1.5rem;
  margin: 0;
}

.main-nav ul {
  display: flex;
  list-style: none;
}

.main-nav li {
  margin-left: var(--spacing-md);
}

.main-nav a {
  color: white;
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: background-color 0.2s ease;
}

.main-nav a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
}

/* Main Content */
main {
  flex: 1;
  padding: var(--spacing-lg) 0;
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

input, 
textarea, 
select {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid #ddd;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-primary);
  font-size: 1rem;
}

input:focus, 
textarea:focus, 
select:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.form-error {
  color: var(--color-danger);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
}

.error-list {
  background-color: rgba(231, 76, 60, 0.1);
  border-left: 4px solid var(--color-danger);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border-radius: var(--border-radius-sm);
}

.error-list ul {
  margin: 0;
  padding-left: var(--spacing-md);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-secondary);
  color: white;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  transition: background-color 0.2s ease;
  text-decoration: none;
}

.btn:hover {
  background-color: #2980b9;
  color: white;
}

.btn:active {
  transform: translateY(1px);
}

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

.btn-primary:hover {
  background-color: #1a252f;
}

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

.btn-accent:hover {
  background-color: #c0392b;
}

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

.btn-success:hover {
  background-color: #219955;
}

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

.btn-warning:hover {
  background-color: #d8870a;
}

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

.btn-danger:hover {
  background-color: #a93226;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--color-secondary);
  color: var(--color-secondary);
}

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

.btn-sm {
  font-size: 0.875rem;
  padding: var(--spacing-xs) var(--spacing-sm);
}

.btn-lg {
  font-size: 1.125rem;
  padding: var(--spacing-md) var(--spacing-lg);
}

.btn-block {
  display: block;
  width: 100%;
}

/* Cards */
.card {
  background-color: white;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
  transition: box-shadow 0.3s ease;
}

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

.card-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid #eee;
  background-color: #f9f9f9;
}

.card-header h3 {
  margin: 0;
}

.card-body {
  padding: var(--spacing-md);
}

.card-footer {
  padding: var(--spacing-md);
  border-top: 1px solid #eee;
  background-color: #f9f9f9;
}

/* Alerts */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid transparent;
}

.alert-success {
  background-color: rgba(39, 174, 96, 0.1);
  border-left-color: var(--color-success);
  color: #216843;
}

.alert-warning {
  background-color: rgba(243, 156, 18, 0.1);
  border-left-color: var(--color-warning);
  color: #9e6610;
}

.alert-danger {
  background-color: rgba(192, 57, 43, 0.1);
  border-left-color: var(--color-danger);
  color: #7b241c;
}

.alert-info {
  background-color: rgba(52, 152, 219, 0.1);
  border-left-color: var(--color-info);
  color: #1d6fa5;
}

/* Palette Display */
.palette-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.palette-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.palette-colors {
  display: flex;
  height: 150px;
  border-top-left-radius: var(--border-radius-md);
  border-top-right-radius: var(--border-radius-md);
  overflow: hidden;
}

.palette-color {
  flex: 1;
  transition: flex 0.3s ease;
}

.palette-color:hover {
  flex: 1.5;
}

.palette-info {
  padding: var(--spacing-md);
  flex: 1;
}

.palette-info h3 {
  margin-top: 0;
  margin-bottom: var(--spacing-xs);
  font-size: 1.25rem;
}

.palette-info p {
  margin-bottom: var(--spacing-xs);
  font-size: 0.875rem;
  color: #666;
}

.palette-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: #888;
}

.palette-actions {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid #eee;
}

.palette-upvotes {
  display: flex;
  align-items: center;
}

.upvote-btn {
  background: none;
  border: none;
  color: #888;
  cursor: pointer;
  padding: var(--spacing-xs);
  display: flex;
  align-items: center;
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.upvote-btn:hover {
  color: var(--color-accent);
}

.upvote-btn.active {
  color: var(--color-accent);
}

.upvote-count {
  margin-left: var(--spacing-xs);
}

/* Single Palette View */
.single-palette {
  margin-bottom: var(--spacing-lg);
}

.color-display {
  display: flex;
  height: 300px;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-md);
}

.color-block {
  flex: 1;
  position: relative;
  transition: flex 0.3s ease;
  cursor: pointer;
}

.color-block:hover {
  flex: 1.5;
}

.color-hex {
  position: absolute;
  bottom: 0;
  width: 100%;
  text-align: center;
  padding: var(--spacing-xs);
  background-color: rgba(0, 0, 0, 0.5);
  color: white;
  font-family: monospace;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.color-block:hover .color-hex {
  opacity: 1;
}

.palette-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.palette-title h1 {
  margin-bottom: 0;
}

.palette-subtitle {
  color: #666;
  font-size: 0.875rem;
}

.palette-creator {
  font-weight: 500;
}

/* Color Picker */
.color-picker-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.color-picker-controls {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.color-preview {
  width: 100%;
  height: 60px;
  border-radius: var(--border-radius-sm);
  border: 1px solid #ddd;
}

.colors-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.color-item {
  position: relative;
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius-sm);
  border: 1px solid #ddd;
  cursor: pointer;
}

.color-item .color-remove {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 20px;
  height: 20px;
  background-color: var(--color-danger);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.color-item:hover .color-remove {
  opacity: 1;
}

/* Admin Panel */
.admin-header {
  margin-bottom: var(--spacing-lg);
}

.admin-nav {
  display: flex;
  gap: var(--spacing-md);
  background-color: #f9f9f9;
  padding: var(--spacing-sm);
  border-radius: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.admin-nav a {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  transition: background-color 0.2s ease;
}

.admin-nav a:hover,
.admin-nav a.active {
  background-color: white;
  box-shadow: var(--shadow-sm);
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.stat-card {
  background-color: white;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.875rem;
  color: #666;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-lg);
}

.admin-table th,
.admin-table td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid #eee;
}

.admin-table th {
  background-color: #f9f9f9;
  font-weight: 500;
}

.admin-table tr:hover {
  background-color: #f5f5f5;
}

.admin-table .actions {
  display: flex;
  gap: var(--spacing-xs);
}

/* Footer */
.main-footer {
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-lg) 0;
  margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
  .main-header .container {
      flex-direction: column;
      align-items: flex-start;
  }
  
  .main-nav {
      margin-top: var(--spacing-md);
      width: 100%;
  }
  
  .main-nav ul {
      flex-direction: column;
  }
  
  .main-nav li {
      margin-left: 0;
      margin-bottom: var(--spacing-xs);
  }
  
  .admin-stats {
      grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .palette-container {
      grid-template-columns: 1fr;
  }
  
  .palette-header {
      flex-direction: column;
      align-items: flex-start;
  }
  
  .palette-actions {
      flex-direction: column;
      gap: var(--spacing-sm);
  }
}