:root {
  --primary-color: #3498db;
  --secondary-color: #2ecc71;
  --accent-color: #e74c3c;
  --warning-color: #f39c12;
  --info-color: #9b59b6;
  --background-color: #f8f9fa;
  --surface-color: #ffffff;
  --text-primary: #2c3e50;
  --text-secondary: #7f8c8d;
  --border-color: #e1e8ed;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

[data-theme="dark"] {
  --primary-color: #2980b9;
  --secondary-color: #27ae60;
  --accent-color: #c0392b;
  --warning-color: #e67e22;
  --info-color: #8e44ad;
  --background-color: #1a1a1a;
  --surface-color: #2d3436;
  --text-primary: #ecf0f1;
  --text-secondary: #bdc3c7;
  --border-color: #34495e;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
  transition: var(--transition);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  background: var(--surface-color);
  border-radius: 20px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}

/* Header Styles */
.header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="%23ffffff20"><polygon points="1000,100 1000,0 0,100"/></svg>');
  background-size: cover;
}

.logo-section {
  position: relative;
  z-index: 2;
}

.logo-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  animation: float 3s ease-in-out infinite;
}

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

.header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* Dashboard Layout */
.dashboard {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 0;
  min-height: 800px;
}

/* Sidebar Styles */
.sidebar {
  background: var(--surface-color);
  padding: 2rem;
  border-right: 1px solid var(--border-color);
  transition: var(--transition);
  overflow-y: auto;
  max-height: 800px;
}

.sidebar-section {
  margin-bottom: 2rem;
}

.sidebar-section h3 {
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.design-options {
  display: grid;
  gap: 0.5rem;
}

.design-btn {
  padding: 0.75rem 1rem;
  border: 2px solid var(--border-color);
  background: var(--surface-color);
  color: var(--text-primary);
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.design-btn:hover {
  border-color: var(--primary-color);
  transform: translateX(5px);
}

.design-btn.active {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: white;
}

.poster-styles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.poster-preview {
  aspect-ratio: 3/4;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
  background: linear-gradient(45deg, #f0f0f0, #e0e0e0);
}

.poster-preview:hover {
  transform: scale(1.05);
  border-color: var(--primary-color);
}

.poster-preview.active {
  border-color: var(--primary-color);
  border-width: 3px;
}

.poster-preview[data-style="style1"] {
  background: linear-gradient(135deg, #667eea, #764ba2);
}
.poster-preview[data-style="style2"] {
  background: linear-gradient(135deg, #f093fb, #f5576c);
}
.poster-preview[data-style="style3"] {
  background: linear-gradient(135deg, #4facfe, #00f2fe);
}
.poster-preview[data-style="style4"] {
  background: linear-gradient(135deg, #43e97b, #38f9d7);
}
.poster-preview[data-style="style5"] {
  background: linear-gradient(135deg, #fa709a, #fee140);
}
.poster-preview[data-style="style6"] {
  background: linear-gradient(135deg, #30cfd0, #330867);
}

/* Clipart Gallery */
.clipart-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.clipart-item {
  aspect-ratio: 1;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  background: var(--surface-color);
}

.clipart-item:hover {
  border-color: var(--primary-color);
  transform: scale(1.1);
}

.clipart-item.active {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: white;
}

.ai-btn {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
}

.ai-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

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

/* Main Content */
.main-content {
  padding: 2rem;
  background: var(--background-color);
  transition: var(--transition);
  overflow-y: auto;
  max-height: 800px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.input-group {
  display: flex;
  flex-direction: column;
}

.input-group.full-width {
  grid-column: 1 / -1;
}

.input-group label {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.input-group input,
.input-group select {
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  background: var(--surface-color);
  color: var(--text-primary);
  transition: var(--transition);
  font-size: 1rem;
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Upload Area */
.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: 10px;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--surface-color);
  position: relative;
}

.upload-area:hover {
  border-color: var(--primary-color);
  background: rgba(52, 152, 219, 0.05);
}

.upload-area i {
  font-size: 2rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.upload-hint {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

.logo-preview,
.additional-preview {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.logo-preview img,
.additional-preview img {
  max-width: 100px;
  max-height: 100px;
  border-radius: 8px;
  border: 2px solid var(--border-color);
}

/* Rich Text Editor */
.formatting-tools {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.formatting-tools button {
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  background: var(--surface-color);
  color: var(--text-primary);
  border-radius: 5px;
  cursor: pointer;
  transition: var(--transition);
  min-width: 40px;
}

.formatting-tools button:hover {
  background: var(--primary-color);
  color: white;
}

.rich-text-editor {
  min-height: 120px;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
  background: var(--surface-color);
  color: var(--text-primary);
  transition: var(--transition);
  outline: none;
}

.rich-text-editor:focus {
  border-color: var(--primary-color);
}

.rich-text-editor[placeholder]:empty:before {
  content: attr(placeholder);
  color: var(--text-secondary);
  opacity: 0.6;
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.btn {
  padding: 1rem 2rem;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-size: 0.9rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
}

.btn-secondary {
  background: var(--surface-color);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-success {
  background: linear-gradient(135deg, var(--secondary-color), #27ae60);
  color: white;
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning-color), #e67e22);
  color: white;
}

.btn-info {
  background: linear-gradient(135deg, var(--info-color), #8e44ad);
  color: white;
}

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

/* Preview Section */
.preview-section {
  margin-top: 2rem;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.preview-header h3 {
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.preview-controls {
  display: flex;
  gap: 0.5rem;
}

.ad-preview {
  background: var(--surface-color);
  border: 2px solid var(--border-color);
  border-radius: 15px;
  padding: 2rem;
  min-height: 500px;
  transition: var(--transition);
  transform-origin: center;
}

.preview-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 400px;
  color: var(--text-secondary);
  text-align: center;
}

.preview-placeholder i {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* Theme Toggle */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
}

.theme-btn {
  background: var(--surface-color);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.theme-btn:hover {
  transform: rotate(15deg);
  box-shadow: var(--shadow);
}

/* Loading Animation */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  z-index: 9999;
}

.loading.hidden {
  display: none;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255, 255, 255, 0.3);
  border-top: 5px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 1rem;
}

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

/* Modal Styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--surface-color);
  border-radius: 15px;
  padding: 2rem;
  max-width: 800px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 1rem;
}

.close-btn {
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--text-secondary);
}

.template-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.template-item {
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.template-item:hover {
  transform: translateY(-5px);
}

.template-preview {
  aspect-ratio: 3/4;
  border-radius: 10px;
  margin-bottom: 0.5rem;
  border: 2px solid var(--border-color);
}

.template-1 { background: linear-gradient(135deg, #667eea, #764ba2); }
.template-2 { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.template-3 { background: linear-gradient(135deg, #43e97b, #38f9d7); }
.template-4 { background: linear-gradient(135deg, #fa709a, #fee140); }

/* Job Ad Styles */
.job-ad {
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: var(--transition);
}

.ad-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  border-bottom: 2px solid rgba(0,0,0,0.1);
  padding-bottom: 1rem;
}

.ad-logo {
  max-width: 80px;
  max-height: 80px;
}

.post-icon {
  font-size: 3rem;
}

.ad-details {
  margin: 2rem 0;
}

.detail-item {
  margin: 1rem 0;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.detail-item i {
  color: var(--primary-color);
  margin-top: 0.2rem;
}

.computer-skills {
  margin-top: 0.5rem;
  padding-left: 1.5rem;
}

.ad-footer {
  background: rgba(255,255,255,0.5);
  padding: 1rem;
  border-radius: 10px;
  text-align: center;
  margin-top: 2rem;
}

/* Notification Styles */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 1rem 1.5rem;
  border-radius: 10px;
  color: white;
  z-index: 10000;
  animation: slideIn 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 400px;
}

.notification.success {
  background: #27ae60;
}

.notification.error {
  background: #e74c3c;
}

.notification.info {
  background: #3498db;
}

.notification.warning {
  background: #f39c12;
}

.notification.fade-out {
  animation: slideOut 0.3s ease forwards;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(100%); opacity: 0; }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .dashboard {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    max-height: 400px;
  }
  
  .main-content {
    max-height: none;
  }
}

@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .action-buttons {
    flex-direction: column;
  }
  
  .btn {
    justify-content: center;
    width: 100%;
  }
  
  .container {
    margin: 10px;
    border-radius: 15px;
  }
  
  .template-gallery {
    grid-template-columns: 1fr;
  }
  
  .clipart-gallery {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .preview-header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }
  
  .preview-controls {
    align-self: flex-end;
  }
}

@media (max-width: 480px) {
  .header h1 {
    font-size: 2rem;
  }
  
  .sidebar {
    padding: 1rem;
  }
  
  .main-content {
    padding: 1rem;
  }
  
  .poster-styles {
    grid-template-columns: 1fr 1fr;
  }
  
  .design-options {
    grid-template-columns: 1fr;
  }
}