@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    src: url('../fonts/Inter-Regular.ttf') format('truetype');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    src: url('../fonts/Inter-SemiBold.ttf') format('truetype');
}

@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 700;
    src: url('../fonts/Inter-Bold.ttf') format('truetype');
}

:root {
    --bg-dark: #0d1117;
    --bg-panel: #0d1117;
    --bg-card: #21262d;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-primary: #3b82f6;
    --accent-success: #22c55e;
    --accent-danger: #ef4444;
    --accent: #3a80ff;    
    --border-color: #1e2c4a;
    --grid-color: #1e293b;
    --border: #1e2c4a;
    --text: #d7e3ff;
    --text-muted: #7f92c6;
    --accent: #3a80ff;    
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

header {
    height: 60px;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-left: 20px;
    padding-right: 10px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo h1 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.dot {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

/* Removed .logo .icon styles */

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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

.controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

button,
.button {
    font-family: inherit;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding-left: 0.8rem;
    padding-right: 0.8rem;
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;    
    min-width: 36px;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 120ms ease;
}

button:hover:not(:disabled),
.button:hover {
    background-color: var(--border-color);
    /* transform: translateY(-1px); */
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

button.primary {
    background-color: var(--accent-success);
    border-color: var(--accent-success);
    color: white;
}

button.primary:hover:not(:disabled) {
    background-color: #16a34a;
}

button.secondary {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

button.secondary:hover:not(:disabled) {
    background-color: #2563eb;
}

button.danger {
    color: var(--accent-danger);
    border-color: var(--accent-danger);
    background-color: transparent;
}

button.danger:hover:not(:disabled) {
    background-color: rgba(239, 68, 68, 0.1);
}

.separator {
    width: 1px;
    height: 24px;
    background-color: var(--border-color);
    margin: 0 5px;
}

main {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.sidebar {
    width: 220px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar-section {
    padding-bottom: 5px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-section h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.component-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.component-item {
    /* background-color: var(--bg-card);
    border: 1px solid var(--border-color); */
    border-radius: 8px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: grab;
    transition: all 0.2s;
}

.component-item:hover {
    border-color: var(--accent-primary);
    background-color: #3b4557;
}

.component-item:active {
    cursor: grabbing;
}

.component-item span {
    font-size: 0.8rem;
    color: var(--text-primary);
}

.preview {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    font-weight: bold;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Specific Preview Styles */
.preview.gate-and,
.preview.gate-nand {
    border-radius: 4px 20px 20px 4px;
}

.preview.gate-or,
.preview.gate-nor,
.preview.gate-xor {
    border-radius: 4px 20px 20px 4px;
}

/* Simplified shape */
.preview.gate-not {
    border-radius: 4px 4px 4px 4px;
    transform: rotate(0deg);
}

/* Triangle-ish */
.preview.switch {
    border-radius: 50%;
}

.preview.light {
    border-radius: 50%;
    background-color: #333;
    border: none;
    box-shadow: inset 0 0 5px black;
}

.canvas-container {
    flex: 1;
    background-color: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.hint-overlay {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.5);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    pointer-events: none;
    backdrop-filter: blur(4px);
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(2px);
    opacity: 1;
    transition: opacity 0.2s ease-in-out;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 400px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    transform: scale(1);
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.hidden .modal {
    transform: scale(0.95);
}

.modal-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.modal-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary)
}

.modal-body label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.modal-body input {
    font-family: inherit;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 1rem;
    outline: none;
}

.modal-body textarea {
    font-family: inherit;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 0px;
    font-size: 1rem;
    outline: none;
    resize: vertical;
}

.modal-body input:focus,
.modal-body textarea:focus {
    border-color: var(--accent-primary);
}

.modal-body input[type="range"] {
    padding: 0;
    cursor: pointer;
    background: transparent;
    -webkit-appearance: none;
    appearance: none;
}

.modal-body input[type="range"]::-webkit-slider-track {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    height: 8px;
}

.modal-body input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    margin-top: -5px;
    margin-bottom: -5px;
}

.modal-body input[type="range"]::-moz-range-track {
    background: var(--bg-dark);
    border: 0px solid var(--border-color);
    border-radius: 4px;
    height: 8px;
}

.modal-body input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    border: none;
    margin-top: -5px;
    margin-bottom: -5px;    
}

.modal-body hr {
    border: 0;
    border-top: 1px solid var(--border-color);
    margin: 15px 0;
}

.modal-body ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.modal-body li {
    margin-bottom: 5px;
    padding-left: 10px;
    border-left: 2px solid var(--accent-primary);
}

.error-message {
    color: var(--accent-danger);
    font-size: 0.8rem;
    margin-top: 5px;
}

.error-message.hidden {
    display: none;
}

.modal-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* Adder Previews */
.preview.half-adder,
.preview.full-adder {
    border-radius: 4px;
    background-color: transparent;
}

/* Binary Previews */
.preview.binary-switch,
.preview.binary-light {
    border-radius: 4px;
    font-size: 0.7rem;
}

.preview.distributor {
    border-radius: 2px;
    position: relative;
    /* Filled square */
}

.preview.text-label {
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    background-color: rgba(51, 65, 85, 0.5);
}

/* Context Menu Styles */
.context-menu {
    position: fixed;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    padding: 8px 0;
    min-width: 220px;
    z-index: 1000;
}

.context-menu.hidden {
    display: none;
}

.context-menu-item {
    padding: 10px 16px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: background-color 0.15s ease;
}

.context-menu-item:hover {
    background-color: var(--bg-panel);
}

.context-menu-item.danger:hover {
    background-color: var(--accent-danger);
    color: white;
}

.context-menu-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 4px 0;
}

.context-menu-section {
    padding: 10px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.context-menu-section label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
}

.context-menu-section input[type="range"] {
    width: 100%;
    margin: 0;
    cursor: pointer;
}

.context-menu-section input[type="range"]:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.context-menu-section span {
    color: var(--accent-primary);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
}

.zoom-indicator {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  background: rgba(8, 14, 32, 0.9);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  pointer-events: auto;
  user-select: none;
  z-index: 10;
  font-variant-numeric: tabular-nums;
  transition: opacity 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.zoom-indicator:not(:hover) {
  opacity: 0.7;
}

.zoom-btn {
  font-family: inherit;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 0.25rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  font-size: 0.9rem;
  line-height: 1;
  transition: all 0.15s ease;
  min-width: 30px;
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.zoom-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.zoom-btn:active {
  transform: scale(0.95);
}

#zoom-value {
  font-family: inherit;
  min-width: 3ch;
  text-align: center;
  color: var(--text-primary);
}