@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600&display=swap');

/* ── Design Tokens ── */
:root {
    --background: #0B0F14;
    --card: #141A21;
    --primary-cta: #FF8C1A;
    --cta-text: #0B0F14;
    --icon: #FF8C1A;
    --notification-badge: #FF3B1F;
    --heading: #F5F5F5;
    --secondary-text: #B3BDC6;

    /* Derived tokens */
    --border: #1E2730;
    --surface: #1C2430;
    --surface-hover: #252D38;
}

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

body {
    font-family: 'Oswald', sans-serif;
    background: var(--background);
    color: var(--heading);
    min-height: 100vh;
    padding-top: 60px;
}

/* Menu Bar */
.menu-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 15px;
    z-index: 1000;
    gap: 10px;
}

.menu-dropdown {
    position: relative;
}

.menu-btn {
    background: transparent;
    border: none;
    color: var(--heading);
    padding: 8px 15px;
    cursor: pointer;
    font-family: 'Oswald', sans-serif;
    font-size: 14px;
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.2s;
}

.menu-btn:hover {
    background: var(--surface);
}

.menu-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    min-width: 150px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    z-index: 1001;
}

.menu-dropdown:hover .menu-content {
    display: block;
}

.menu-item {
    display: block;
    width: 100%;
    padding: 10px 15px;
    background: transparent;
    border: none;
    color: var(--heading);
    text-align: left;
    cursor: pointer;
    font-family: 'Oswald', sans-serif;
    font-size: 13px;
    font-weight: 400;
    transition: all 0.2s;
}

.menu-item:hover {
    background: var(--surface);
}

.menu-item:first-child {
    border-radius: 6px 6px 0 0;
}

.menu-item:last-child {
    border-radius: 0 0 6px 6px;
}

.menu-divider {
    height: 1px;
    background: var(--border);
    margin: 5px 0;
}

.toolbar-separator {
    width: 1px;
    height: 30px;
    background: var(--border);
    margin: 0 5px;
}

.toolbar-btn {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--primary-cta);
    padding: 6px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'Oswald', sans-serif;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.toolbar-btn:hover {
    background: var(--surface-hover);
    border-color: var(--primary-cta);
}

.toolbar-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.toolbar-btn .icon {
    font-size: 14px;
}

.selection-info-bar {
    font-size: 12px;
    font-weight: 400;
    color: var(--secondary-text);
    margin-left: auto;
    padding: 0 10px;
}

.name-field {
    display: flex;
    align-items: center;
    gap: 8px;
}

.name-field label {
    font-size: 12px;
    font-weight: 400;
    color: var(--secondary-text);
}

.name-field input {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--heading);
    padding: 6px 10px;
    font-family: 'Oswald', sans-serif;
    font-size: 13px;
    width: 180px;
}

.name-field input:focus {
    outline: none;
    border-color: var(--primary-cta);
}

h1 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-cta);
    text-shadow: 0 0 10px rgba(255, 140, 26, 0.4);
    padding-top: 20px;
    font-weight: 600;
    font-size: 20px;
}

.container {
    display: grid;
    grid-template-columns: 200px 1fr 300px;
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
    align-items: start;
    padding: 0 20px 20px 20px;
}

.panel {
    background: var(--card);
    border-radius: 12px;
    padding: 15px;
    border: 1px solid var(--border);
}

.panel:first-child {
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

.panel h2 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary-cta);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

/* Instruction Palette */
.instruction-palette {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.draggable-instruction {
    background: linear-gradient(135deg, var(--surface), var(--card));
    border: 2px solid var(--primary-cta);
    border-radius: 8px;
    padding: 12px;
    cursor: grab;
    transition: all 0.2s;
    text-align: center;
    font-weight: 600;
}

.draggable-instruction:hover {
    background: linear-gradient(135deg, var(--surface-hover), var(--surface));
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 140, 26, 0.2);
}

.draggable-instruction:active {
    cursor: grabbing;
}

.draggable-instruction.wait { border-color: #E5A83B; color: #E5A83B; }
.draggable-instruction.set-channel { border-color: #3DBE7B; color: #3DBE7B; }
.draggable-instruction.pause { border-color: #9B6DD7; color: #9B6DD7; }
.draggable-instruction.temp-set { border-color: #E88A3A; color: #E88A3A; }
.draggable-instruction.set-index { border-color: #3BBEC0; color: #3BBEC0; }
.draggable-instruction.comment { border-color: #6B7A85; color: #6B7A85; }
.draggable-instruction.program-end { border-color: #D45A8D; color: #D45A8D; }
.draggable-instruction.block-start { border-color: #7B6FD4; color: #7B6FD4; }
.draggable-instruction.block-end { border-color: #D477A0; color: #D477A0; }
.draggable-instruction.call-block { border-color: #3EB89A; color: #3EB89A; }
.draggable-instruction.return-block { border-color: #D47A5E; color: #D47A5E; }
.draggable-instruction.var-set { border-color: #4A9BE8; color: #4A9BE8; }
.draggable-instruction.var-update { border-color: #7B6FD4; color: #7B6FD4; }
.draggable-instruction.if-block { border-color: #E5C85A; color: #E5C85A; }

.instruction-info {
    font-size: 11px;
    color: var(--secondary-text);
    margin-top: 5px;
    font-weight: 400;
}

/* Program Editor */
.editor-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.drop-zone {
    min-height: 300px;
    background: var(--background);
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 10px;
    transition: all 0.2s;
}

.drop-zone.drag-over {
    border-color: var(--primary-cta);
    background: rgba(255, 140, 26, 0.05);
}

.drop-zone-placeholder {
    color: #4A5568;
    text-align: center;
    padding: 40px;
    font-style: italic;
    font-weight: 400;
}

.program-instruction {
    background: var(--surface);
    border-radius: 6px;
    padding: 10px 12px;
    margin-bottom: 2px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-left: 4px solid var(--primary-cta);
    position: relative;
    cursor: grab;
}

.program-instruction.wait { border-left-color: #E5A83B; }
.program-instruction.set-channel { border-left-color: #3DBE7B; }
.program-instruction.pause { border-left-color: #9B6DD7; }
.program-instruction.temp-set { border-left-color: #E88A3A; }
.program-instruction.set-index { border-left-color: #3BBEC0; }
.program-instruction.set-index.error {
    border-left-color: var(--notification-badge);
    background: rgba(255, 59, 31, 0.15);
}
.program-instruction.comment {
    border-left-color: #6B7A85;
    background: rgba(107, 122, 133, 0.08);
}
.program-instruction.program-end { border-left-color: #D45A8D; }
.program-instruction.block-start { border-left-color: #7B6FD4; }
.program-instruction.block-end { border-left-color: #D477A0; }
.program-instruction.call-block { border-left-color: #3EB89A; }
.program-instruction.return-block { border-left-color: #D47A5E; }
.program-instruction.var-set { border-left-color: #4A9BE8; }
.program-instruction.var-update { border-left-color: #7B6FD4; }
.program-instruction.if-block { border-left-color: #E5C85A; }

.error-indicator {
    color: var(--notification-badge);
    font-size: 11px;
    margin-left: 10px;
}

.playhead-zone {
    height: 4px;
    margin: 2px 0;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.playhead-zone:hover {
    height: 20px;
    background: rgba(255, 140, 26, 0.15);
}

.playhead-zone:hover::after {
    content: '\25B6 Set playhead here';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 10px;
    color: var(--primary-cta);
    white-space: nowrap;
}

.playhead-zone.active {
    height: 6px;
    background: linear-gradient(90deg, var(--primary-cta), #E5A83B);
    box-shadow: 0 0 10px rgba(255, 140, 26, 0.4);
}

.playhead-zone.active::before {
    content: '\25B6';
    position: absolute;
    left: -15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-cta);
    font-size: 12px;
}

.program-instruction.selected {
    background: var(--surface-hover);
    box-shadow: 0 0 0 2px var(--primary-cta);
}

.select-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-cta);
}

.program-instruction:active {
    cursor: grabbing;
}

.program-instruction.dragging {
    opacity: 0.5;
    background: var(--surface-hover);
}

.program-instruction.drag-over-above {
    border-top: 3px solid var(--primary-cta);
}

.program-instruction.drag-over-below {
    border-bottom: 3px solid var(--primary-cta);
}

.drag-handle {
    cursor: grab;
    color: #4A5568;
    font-size: 14px;
    padding: 0 5px;
    user-select: none;
}

.drag-handle:hover {
    color: var(--secondary-text);
}

.drag-handle:active {
    cursor: grabbing;
}

.move-buttons {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-left: auto;
    margin-right: 5px;
}

.move-btn {
    background: var(--background);
    border: 1px solid var(--border);
    color: var(--secondary-text);
    width: 20px;
    height: 14px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 10px;
    line-height: 1;
    padding: 0;
    transition: all 0.2s;
}

.move-btn:hover {
    background: var(--surface-hover);
    color: var(--heading);
    border-color: var(--primary-cta);
}

.move-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.program-instruction.executing {
    background: var(--surface-hover);
    box-shadow: 0 0 15px rgba(255, 140, 26, 0.3);
}

.insert-zone {
    height: 8px;
    margin: 4px 0;
    border-radius: 4px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.insert-zone span {
    display: none;
    font-size: 11px;
    color: var(--primary-cta);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.insert-zone.drag-over {
    height: 40px;
    background: rgba(255, 140, 26, 0.1);
    border: 2px dashed var(--primary-cta);
}

.insert-zone.drag-over span {
    display: block;
}

.instruction-label {
    font-weight: 600;
    min-width: 100px;
}

.instruction-timestamp {
    font-family: 'Courier New', monospace;
    font-size: 11px;
    color: var(--primary-cta);
    background: var(--background);
    padding: 3px 8px;
    border-radius: 4px;
    min-width: 60px;
    text-align: center;
}

.instruction-index {
    font-family: 'Courier New', monospace;
    font-size: 11px;
    color: #E5A83B;
    background: var(--background);
    padding: 3px 8px;
    border-radius: 4px;
    min-width: 40px;
    text-align: center;
}

.instruction-params {
    display: flex;
    gap: 10px;
    flex: 1;
}

.param-group {
    display: flex;
    align-items: center;
    gap: 5px;
}

.param-group label {
    font-size: 12px;
    font-weight: 400;
    color: var(--secondary-text);
}

.param-group input, .param-group select {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--heading);
    font-family: 'Oswald', sans-serif;
    padding: 5px 8px;
    width: 80px;
}

.param-group input:focus, .param-group select:focus {
    outline: none;
    border-color: var(--primary-cta);
}

.param-group select {
    width: 70px;
}

.delete-btn {
    background: var(--notification-badge);
    border: none;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    transition: all 0.2s;
}

.delete-btn:hover {
    background: #FF5A3F;
    transform: scale(1.1);
}

/* Program Output */
.program-output {
    background: var(--background);
    border-radius: 8px;
    padding: 15px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    max-height: 200px;
    overflow-y: auto;
}

.program-line {
    padding: 3px 0;
    border-bottom: 1px solid var(--border);
}

.program-line.executing {
    background: rgba(255, 140, 26, 0.15);
    color: var(--primary-cta);
}

.byte-counter {
    text-align: right;
    margin-top: 10px;
    padding: 10px;
    background: var(--background);
    border-radius: 8px;
    font-weight: 600;
}

.byte-counter span {
    color: var(--primary-cta);
    font-size: 18px;
}

.bytes-output-section {
    margin-top: 10px;
}

.bytes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.bytes-header span {
    font-size: 12px;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--secondary-text);
}

.bytes-buttons {
    display: flex;
    gap: 8px;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    font-weight: 400;
    color: var(--secondary-text);
    cursor: pointer;
}

.checkbox-label input {
    cursor: pointer;
    accent-color: var(--primary-cta);
}

.copy-btn {
    background: var(--surface);
    border: 1px solid var(--primary-cta);
    color: var(--primary-cta);
    padding: 5px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'Oswald', sans-serif;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s;
}

.copy-btn:hover {
    background: var(--surface-hover);
}

.copy-btn.copied {
    background: var(--primary-cta);
    border-color: var(--primary-cta);
    color: var(--cta-text);
}

.bytes-output {
    width: 100%;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    color: var(--primary-cta);
    resize: vertical;
    min-height: 60px;
    max-height: 120px;
}

.bytes-output:focus {
    outline: none;
    border-color: var(--primary-cta);
}

/* Simulation Panel */
.simulation-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.controls {
    display: flex;
    gap: 10px;
}

.control-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-family: 'Oswald', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.play-btn {
    background: linear-gradient(135deg, #3DBE7B, #2E9960);
    color: var(--cta-text);
}

.play-btn:hover {
    box-shadow: 0 4px 15px rgba(61, 190, 123, 0.4);
}

.pause-btn {
    background: linear-gradient(135deg, #E5A83B, #CC9530);
    color: var(--cta-text);
}

.pause-btn:hover {
    box-shadow: 0 4px 15px rgba(229, 168, 59, 0.4);
}

.stop-btn {
    background: linear-gradient(135deg, var(--notification-badge), #E0321A);
    color: var(--heading);
}

.stop-btn:hover {
    box-shadow: 0 4px 15px rgba(255, 59, 31, 0.4);
}

.record-btn {
    background: linear-gradient(135deg, var(--notification-badge), #E0321A);
    color: var(--heading);
}

.record-btn:hover {
    box-shadow: 0 4px 15px rgba(255, 59, 31, 0.4);
}

.record-btn.recording {
    background: linear-gradient(135deg, #FF5A3F, var(--notification-badge));
    animation: pulse-record 1s infinite;
}

.clear-btn {
    background: linear-gradient(135deg, #4A5568, #3A4250);
    color: var(--heading);
}

.clear-btn:hover {
    box-shadow: 0 4px 15px rgba(74, 85, 104, 0.4);
}

@keyframes pulse-record {
    0%, 100% { box-shadow: 0 0 5px rgba(255, 59, 31, 0.5); }
    50% { box-shadow: 0 0 20px rgba(255, 59, 31, 0.8); }
}

.record-options {
    margin-top: 8px;
    padding: 8px;
    background: var(--background);
    border-radius: 6px;
}

.record-info {
    font-size: 11px;
    font-weight: 400;
    color: var(--secondary-text);
    text-align: center;
    padding: 8px;
    background: var(--background);
    border-radius: 6px;
    margin-top: 10px;
}

.record-info.active {
    color: var(--notification-badge);
    background: rgba(255, 59, 31, 0.08);
}

.key-map {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    margin-top: 8px;
    font-family: 'Courier New', monospace;
    font-size: 10px;
}

.key-map span {
    background: var(--surface);
    padding: 4px;
    border-radius: 4px;
    text-align: center;
}

.key-map span.pressed {
    background: var(--primary-cta);
    color: var(--cta-text);
}

.control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.simulation-display {
    background: var(--background);
    border-radius: 8px;
    padding: 20px;
    min-height: 200px;
}

.lights-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.light {
    aspect-ratio: 1;
    border-radius: 50%;
    background: #111518;
    border: 3px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.1s;
    position: relative;
}

.light.on {
    box-shadow: 0 0 20px var(--light-color), 0 0 40px var(--light-color), inset 0 0 20px rgba(255,255,255,0.3);
    background: var(--light-color);
    border-color: var(--light-color);
    color: #000;
}

.light-0 { --light-color: #ff4757; }
.light-1 { --light-color: #00ff88; }
.light-2 { --light-color: #00d4ff; }
.light-3 { --light-color: #ffd700; }
.light-4 { --light-color: #ff6b9d; }
.light-5 { --light-color: #a55eea; }
.light-6 { --light-color: #ff9f43; }
.light-7 { --light-color: #ffffff; }
.light-8 { --light-color: #00ffcc; }
.light-9 { --light-color: #ff6b6b; }
.light-10 { --light-color: #74b9ff; }
.light-11 { --light-color: #a29bfe; }
.light-12 { --light-color: #fd79a8; }
.light-13 { --light-color: #55efc4; }
.light-14 { --light-color: #ffeaa7; }
.light-15 { --light-color: #dfe6e9; }

.simulation-status {
    text-align: center;
    padding: 10px;
    background: var(--surface);
    border-radius: 8px;
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.status-running { color: #3DBE7B; }
.status-paused { color: #E5A83B; }
.status-stopped { color: var(--notification-badge); }

.function-buttons {
    margin-top: 10px;
    padding: 10px;
    background: var(--background);
    border-radius: 8px;
}

.function-buttons-label {
    font-size: 11px;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--secondary-text);
    margin-bottom: 8px;
}

.function-buttons-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
}

.block-btn {
    background: var(--surface);
    border: 1px solid var(--primary-cta);
    color: var(--primary-cta);
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Oswald', sans-serif;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s;
}

.block-btn:hover {
    background: var(--primary-cta);
    color: var(--cta-text);
    box-shadow: 0 0 10px rgba(255, 140, 26, 0.4);
}

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

.block-btn.active {
    background: var(--primary-cta);
    color: var(--cta-text);
    animation: pulse-block 0.5s;
}

@keyframes pulse-block {
    0% { box-shadow: 0 0 0 0 rgba(255, 140, 26, 0.6); }
    100% { box-shadow: 0 0 0 10px rgba(255, 140, 26, 0); }
}

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

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

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

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