@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  /* Color System */
  --bg-primary: #0b0b16;
  --bg-secondary: #121226;
  --bg-card: rgba(26, 26, 46, 0.45);
  --border-color: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 255, 255, 0.15);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --primary-color: #8b5cf6;
  --primary-glow: rgba(139, 92, 246, 0.4);
  --secondary-color: #06b6d4;
  --secondary-glow: rgba(6, 182, 212, 0.4);
  --accent-color: #ec4899;
  --accent-glow: rgba(236, 72, 153, 0.4);
  
  --success: #10b981;
  --error: #ef4444;
  
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --shadow-sm: 0 2px 8px -1px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 50px -12px rgba(0, 0, 0, 0.5);
  
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.7);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --primary-color: #7c3aed;
  --primary-glow: rgba(124, 58, 237, 0.2);
  --secondary-color: #0891b2;
  --secondary-glow: rgba(8, 145, 178, 0.2);
  --accent-color: #db2777;
  --accent-glow: rgba(219, 39, 119, 0.2);
  
  --shadow-sm: 0 2px 8px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 50px -12px rgba(0, 0, 0, 0.12);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  display: flex;
  flex-direction: column;
}

/* Star Background Effect */
.ambient-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.ambient-glow-1 {
  position: absolute;
  top: -10%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  filter: blur(80px);
  opacity: 0.6;
  animation: float 20s ease-in-out infinite alternate;
}

.ambient-glow-2 {
  position: absolute;
  bottom: -10%;
  left: -10%;
  width: 60vw;
  height: 60vw;
  border-radius: 50%;
  background: radial-gradient(circle, var(--secondary-glow) 0%, transparent 70%);
  filter: blur(100px);
  opacity: 0.5;
  animation: float 25s ease-in-out infinite alternate-reverse;
}

/* Main Layout */
.app-container {
  display: grid;
  grid-template-columns: 280px 1fr 320px;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

@media (max-width: 1200px) {
  .app-container {
    grid-template-columns: 240px 1fr;
  }
  .history-sidebar {
    display: none !important; /* Will slide out instead or show in drawer */
  }
}

@media (max-width: 768px) {
  .app-container {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }
  .sidebar {
    height: auto !important;
    border-right: none !important;
    border-bottom: 1px solid var(--border-color);
  }
}

/* Sidebar Navigation */
.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  gap: 2rem;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1.5rem;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(to right, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex-grow: 1;
}

.nav-item {
  width: 100%;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 12px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  cursor: pointer;
  background: transparent;
  width: 100%;
  text-align: left;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
}

.nav-link.active {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(6, 182, 212, 0.05) 100%);
  border-color: rgba(139, 92, 246, 0.3);
  color: var(--text-primary);
  font-weight: 600;
  box-shadow: inset 0 0 12px rgba(139, 92, 246, 0.05);
}

.nav-link svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
  transition: stroke var(--transition-fast);
}

.nav-link.active svg {
  stroke: var(--primary-color);
}

/* Main Dashboard */
.main-content {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  overflow-y: auto;
}

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

.title-section h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 0.25rem;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.title-section p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.actions-section {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Glass Card styling */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
  border-color: var(--border-hover);
}

/* Fusion Playground */
.fusion-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  position: relative;
  padding: 3rem 1.5rem;
}

.fusion-workspace {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 800px;
  gap: 2rem;
  position: relative;
}

@media (max-width: 600px) {
  .fusion-workspace {
    flex-direction: column;
  }
  .operator-plus {
    transform: rotate(90deg);
  }
}

.fusion-slot {
  flex: 1;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: rgba(0, 0, 0, 0.2);
  border: 2px dashed var(--border-color);
  border-radius: 20px;
  padding: 1.5rem;
  position: relative;
  transition: all var(--transition-normal);
  width: 100%;
}

.fusion-slot.active {
  border-color: var(--primary-color);
  background: rgba(139, 92, 246, 0.03);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.05);
}

.slot-label {
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--bg-primary);
  padding: 2px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  border-radius: 4px;
}

.operator-plus {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 300;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  z-index: 2;
  transition: all var(--transition-normal);
}

.operator-plus.pulsing {
  animation: pulse-glow 2s infinite;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

/* Dynamic Inputs Styling */
.input-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.input-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}

.input-field {
  width: 100%;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.9rem 1.1rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.input-field:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-glow);
  background: rgba(0, 0, 0, 0.4);
}

.input-field[type="color"] {
  height: 50px;
  padding: 3px;
  cursor: pointer;
}

/* Numeric Adder specific styles */
.number-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 0.75rem;
  width: 100%;
}

.select-field {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'></polyline></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 40px !important;
}

/* Color Adder dynamic blocks */
.color-preview-swatch {
  width: 100%;
  height: 80px;
  border-radius: 12px;
  margin-top: 0.5rem;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 2px 10px rgba(0,0,0,0.2);
}

.color-preview-value {
  position: absolute;
  bottom: 8px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: white;
  background: rgba(0, 0, 0, 0.6);
  padding: 2px 6px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}

/* Fusion Button */
.btn-fuse {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  border: none;
  border-radius: 16px;
  padding: 1.1rem 3rem;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  box-shadow: 0 10px 25px var(--primary-glow);
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: relative;
  overflow: hidden;
}

.btn-fuse::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: all 0.6s ease;
}

.btn-fuse:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px var(--primary-glow), 0 0 15px var(--secondary-glow);
}

.btn-fuse:hover::before {
  left: 100%;
}

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

.btn-fuse.animating {
  pointer-events: none;
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--primary-color) 100%);
  animation: button-shake 0.5s ease-in-out infinite alternate;
}

/* Results Component */
.result-card {
  margin-top: 1.5rem;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.05) 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 2.5rem 2rem;
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
}

.result-card.visible {
  display: flex;
  animation: reveal-fade-up 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.result-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  filter: blur(30px);
  z-index: 0;
  pointer-events: none;
}

.result-header {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--secondary-color);
  z-index: 1;
}

.result-value-container {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  max-width: 100%;
  word-wrap: break-word;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.result-badge {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-family: var(--font-mono);
}

.result-visual {
  width: 100%;
  max-width: 400px;
  min-height: 120px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
  z-index: 1;
  padding: 1rem;
}

.result-meta {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  max-width: 500px;
  z-index: 1;
}

.result-actions {
  display: flex;
  gap: 1rem;
  z-index: 1;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.7rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-hover);
}

.btn-secondary svg {
  width: 16px;
  height: 16px;
}

/* History Sidebar */
.history-sidebar {
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  gap: 1.5rem;
  overflow-y: auto;
}

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

.history-title {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-clear-history {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.btn-clear-history:hover {
  color: var(--error);
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  list-style: none;
}

.history-item {
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.history-item:hover {
  border-color: var(--primary-color);
  background: rgba(139, 92, 246, 0.02);
  transform: translateY(-1px);
}

.history-type-badge {
  align-self: flex-start;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--secondary-color);
  letter-spacing: 0.5px;
}

.history-expr {
  font-size: 0.85rem;
  color: var(--text-secondary);
  word-break: break-all;
  font-family: var(--font-mono);
}

.history-res {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-all;
}

.history-empty {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: center;
  padding: 3rem 0;
}

/* Light / Dark Mode Toggle button */
.theme-toggle-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-hover);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
}

[data-theme="light"] .sun-icon {
  display: none;
}

[data-theme="dark"] .moon-icon {
  display: none;
}

/* Utility Classes and Animations */
.text-accent {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

@keyframes float {
  0% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-15px) scale(1.05); }
  100% { transform: translateY(0) scale(1); }
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 15px var(--border-color);
  }
  50% {
    box-shadow: 0 0 25px var(--primary-color);
    border-color: var(--primary-color);
  }
}

@keyframes reveal-fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes button-shake {
  0% { transform: translateX(-2px) scale(0.98); }
  100% { transform: translateX(2px) scale(1.02); }
}

/* Fusion collision animation */
.collision-left {
  animation: collide-left 0.6s cubic-bezier(0.77, 0, 0.175, 1) forwards;
}

.collision-right {
  animation: collide-right 0.6s cubic-bezier(0.77, 0, 0.175, 1) forwards;
}

@keyframes collide-left {
  0% { transform: translateX(0); }
  75% { transform: translateX(calc(50% + 50px)) scale(0.9); }
  100% { transform: translateX(0); }
}

@keyframes collide-right {
  0% { transform: translateX(0); }
  75% { transform: translateX(calc(-50% - 50px)) scale(0.9); }
  100% { transform: translateX(0); }
}

/* Particle Explosion effect */
.particle {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  animation: particle-fly 0.8s cubic-bezier(0.1, 0.8, 0.25, 1) forwards;
  z-index: 10;
}

@keyframes particle-fly {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 1;
  }
  100% {
    transform: translate(var(--tx), var(--ty)) scale(0);
    opacity: 0;
  }
}

/* Toast Message */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 1rem 1.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  font-weight: 500;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast svg {
  width: 18px;
  height: 18px;
}

.toast-success svg {
  stroke: var(--success);
}

.toast-info svg {
  stroke: var(--secondary-color);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

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

/* Alchemy specific styles */
.alchemy-formula {
  background: rgba(0,0,0,0.3);
  padding: 0.5rem 1rem;
  border-radius: 30px;
  border: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--secondary-color);
}

.alchemy-visual-svg {
  filter: drop-shadow(0 0 10px var(--accent-glow));
  animation: float 4s ease-in-out infinite;
}

.color-palette-grid {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
}

.palette-swatches {
  display: flex;
  height: 40px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.palette-swatch {
  flex: 1;
  height: 100%;
  cursor: pointer;
  transition: transform 0.2s;
}

.palette-swatch:hover {
  transform: scaleY(1.1);
  z-index: 1;
}

.alchemy-list-tag {
  background: linear-gradient(135deg, rgba(236,72,153,0.1) 0%, rgba(139,92,246,0.1) 100%);
  border: 1px solid rgba(236,72,153,0.2);
  color: var(--accent-color);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-block;
  margin: 2px;
}