@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #f8fafc;
  --bg-secondary: rgba(255, 255, 255, 0.75);
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-input: rgba(241, 245, 249, 0.9);
  
  --border-light: rgba(15, 23, 42, 0.08);
  --border-hover: rgba(15, 23, 42, 0.15);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --accent-blue: #0284c7;
  --accent-purple: #7c3aed;
  --accent-green: #059669;
  --accent-orange: #ea580c;
  
  --gradient-prompt: linear-gradient(135deg, #0284c7 0%, #6366f1 100%);
  --gradient-skill: linear-gradient(135deg, #10b981 0%, #047857 100%);
  --gradient-accent: linear-gradient(135deg, #6366f1 0%, #7c3aed 100%);
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'Fira Code', monospace;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  min-height: 100vh;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(56, 189, 248, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(192, 132, 252, 0.05) 0%, transparent 40%);
}

/* Authentication Screen Layout */
#auth-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.auth-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(16px);
  text-align: center;
}

.auth-card h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-card p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 30px;
}

.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  outline: none;
  transition: all 0.3s ease;
}

.form-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.btn {
  width: 100%;
  background: var(--gradient-accent);
  color: white;
  border: none;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(129, 140, 248, 0.3);
}

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

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-hover);
  box-shadow: none;
}

.auth-toggle {
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

.auth-toggle span {
  color: var(--accent-blue);
  cursor: pointer;
  font-weight: 600;
}

.auth-toggle span:hover {
  text-decoration: underline;
}

/* Dashboard Layout */
#dashboard-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
aside {
  width: 280px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-light);
  backdrop-filter: blur(16px);
  padding: 30px 20px;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 40px;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-section {
  margin-bottom: 30px;
}

.nav-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-left: 10px;
}

.nav-list {
  list-style: none;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  margin-bottom: 4px;
  transition: all 0.2s ease;
}

.nav-item:hover, .nav-item.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-item.active {
  border-left: 3px solid var(--accent-purple);
  border-top-left-radius: 2px;
  border-bottom-left-radius: 2px;
  background: rgba(129, 140, 248, 0.08);
}

.user-profile {
  margin-top: auto;
  padding: 15px 10px 0 10px;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.username {
  font-size: 14px;
  font-weight: 600;
}

.logout-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s ease;
}

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

/* Main Content Area */
main {
  flex: 1;
  margin-left: 280px;
  padding: 40px;
  max-width: 1200px;
}

/* Top bar / Search & Filter */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
  gap: 20px;
}

.search-container {
  position: relative;
  flex: 1;
  max-width: 500px;
}

.search-input {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 14px 16px 14px 44px;
  font-size: 14px;
  outline: none;
  transition: all 0.3s ease;
}

.search-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.filter-pills {
  display: flex;
  gap: 10px;
  margin-bottom: 30px;
  overflow-x: auto;
  padding-bottom: 10px;
}

.pill {
  padding: 8px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 50px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.pill:hover, .pill.active {
  border-color: var(--accent-blue);
  color: var(--text-primary);
  background: rgba(56, 189, 248, 0.08);
}

/* Grid of Cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 25px;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  min-height: 250px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.card.type-prompt::before {
  background: var(--gradient-prompt);
}

.card.type-persona::before {
  background: linear-gradient(135deg, #ea580c 0%, #dc2626 100%);
}

.card.type-system_prompt::before {
  background: linear-gradient(135deg, #7c3aed 0%, #4f46e5 100%);
}

.card.type-skill::before {
  background: var(--gradient-skill);
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.card-badge {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 4px 8px;
  border-radius: 4px;
}

.card.type-prompt .card-badge {
  background: rgba(2, 132, 199, 0.12);
  color: var(--accent-blue);
}

.card.type-persona .card-badge {
  background: rgba(234, 88, 12, 0.12);
  color: var(--accent-orange);
}

.card.type-system_prompt .card-badge {
  background: rgba(124, 58, 237, 0.12);
  color: var(--accent-purple);
}

.card.type-skill .card-badge {
  background: rgba(5, 150, 105, 0.12);
  color: var(--accent-green);
}

.favorite-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s ease;
}

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

.card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.card-tag {
  font-size: 11px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  padding: 3px 8px;
  border-radius: 4px;
}

.card-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-light);
  padding-top: 14px;
  font-size: 12px;
  color: var(--text-muted);
}

.card-actions {
  display: flex;
  gap: 12px;
}

.action-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s ease;
}

.action-btn:hover {
  color: var(--text-primary);
}

/* Modals & Popups */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(7, 8, 12, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 600px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 30px;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
}

.close-modal {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

/* Code area */
.code-preview {
  font-family: var(--font-mono);
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px;
  font-size: 13px;
  color: var(--text-primary);
  max-height: 250px;
  overflow-y: auto;
  white-space: pre-wrap;
  margin-bottom: 20px;
}

/* Upload Area */
.upload-zone {
  border: 2px dashed var(--border-light);
  border-radius: var(--radius-md);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  background: rgba(255, 255, 255, 0.01);
}

.upload-zone:hover {
  border-color: var(--accent-blue);
  background: rgba(56, 189, 248, 0.02);
}

.upload-zone svg {
  margin-bottom: 12px;
  color: var(--text-muted);
}

.upload-title {
  font-weight: 600;
  margin-bottom: 4px;
}

.upload-desc {
  font-size: 12px;
  color: var(--text-muted);
}

/* Copy notification toast */
#toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--gradient-accent);
  color: white;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#toast.show {
  transform: translateX(-50%) translateY(0);
}