/**
 * JobBot PWA Styles
 * Modern, responsive design for the chat-first job search interface
 */

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

:root {
  /* Colors */
  --primary: #667eea;
  --primary-dark: #5568d3;
  --secondary: #764ba2;
  --success: #27ae60;
  --warning: #f39c12;
  --danger: #e74c3c;
  --info: #3498db;

  /* Neutrals */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #2c3e50;
  --text-secondary: #7f8c8d;
  --text-muted: #95a5a6;
  --border: #dee2e6;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* 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 25px rgba(0, 0, 0, 0.1);

  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition: all 0.2s ease;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Layout ===== */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 100vw;
  overflow: hidden;
}

.app-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  box-shadow: var(--shadow-md);
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.main-nav {
  display: flex;
  gap: var(--spacing-sm);
}

.nav-btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

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

.app-main {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.view {
  display: none;
  height: 100%;
  overflow: hidden;
}

.view.active {
  display: block;
}

/* ===== Chat View ===== */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-primary);
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Message Bubbles */
.message {
  display: flex;
  gap: var(--spacing-md);
  max-width: 85%;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  flex-shrink: 0;
}

.message.user .message-avatar {
  background: var(--text-secondary);
}

.message-content {
  flex: 1;
}

.message-bubble {
  background: var(--bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  line-height: 1.5;
}

.message.user .message-bubble {
  background: var(--primary);
  color: white;
}

.message-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: var(--spacing-xs);
}

/* Welcome Message */
.welcome-message {
  text-align: center;
  padding: var(--spacing-xl);
  max-width: 600px;
  margin: 0 auto;
}

.welcome-message h2 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.welcome-message p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

/* Suggestions */
.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-top: var(--spacing-lg);
}

.suggestion-chip {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.9rem;
  color: var(--text-primary);
}

.suggestion-chip:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* Job Cards */
.job-cards {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.job-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition);
  cursor: pointer;
}

.job-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--primary);
}

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

.job-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.job-card-org {
  color: var(--text-secondary);
  font-weight: 500;
}

.relevance-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
}

.relevance-badge.high {
  background: var(--success);
}

.relevance-badge.medium {
  background: var(--warning);
}

.relevance-badge.low {
  background: var(--text-muted);
}

.job-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.job-card-meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.job-card-summary {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.job-card-highlights {
  margin-bottom: var(--spacing-md);
}

.job-card-highlights ul {
  list-style: none;
  padding: 0;
}

.job-card-highlights li {
  padding: var(--spacing-xs) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.job-card-highlights li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: bold;
}

.job-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.job-card-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

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

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

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

.btn-secondary:hover {
  background: var(--bg-tertiary);
}

.btn-icon {
  padding: var(--spacing-sm);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.btn-icon:hover {
  background: var(--bg-secondary);
  color: var(--primary);
}

/* Chat Input */
.chat-input-container {
  padding: var(--spacing-md) var(--spacing-lg);
  background: white;
  border-top: 1px solid var(--border);
}

.chat-form {
  display: flex;
  gap: var(--spacing-sm);
  max-width: 800px;
  margin: 0 auto;
}

.message-input {
  flex: 1;
  padding: var(--spacing-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

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

.send-btn {
  background: var(--primary);
  border: none;
  color: white;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.send-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.send-btn:disabled {
  background: var(--text-muted);
  cursor: not-allowed;
  transform: none;
}

/* Browse View */
.browse-container,
.saved-container {
  padding: var(--spacing-xl);
  max-width: 1200px;
  margin: 0 auto;
}

.browse-container h2,
.saved-container h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

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

/* Loading States */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

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

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.typing-indicator {
  display: flex;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: typing 1.4s infinite;
}

.typing-indicator span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.5;
  }
  30% {
    transform: translateY(-10px);
    opacity: 1;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .header-content {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .logo {
    font-size: 1.25rem;
  }

  .nav-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
  }

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

  .message {
    max-width: 90%;
  }

  .message-avatar {
    width: 32px;
    height: 32px;
    font-size: 0.85rem;
  }

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

  .job-card-title {
    font-size: 1.1rem;
  }

  .job-card-meta {
    font-size: 0.85rem;
  }

  .chat-input-container {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .browse-container,
  .saved-container {
    padding: var(--spacing-md);
  }
}

/* Utilities */
.hidden {
  display: none !important;
}

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}