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

:root {

  --unitra-green: #2d7a6d;
  --unitra-green-dark: #1e5a4f;
  --unitra-green-light: #3a9485;
  --cream: #f5f0e6;
  --cream-dark: #e8e0d0;
  --cream-light: #faf8f4;
  --text-dark: #1a1a1a;
  --text-muted: #5a5a5a;

  --terminal-bg: #0a100e;
  --terminal-green: #4dff88;
  --terminal-green-dim: #2d9955;

  --accent-red: #c43030;
  --accent-yellow: #d4a030;

  --font-main: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;
}

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

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-main);
  background: var(--unitra-green);
}

.app-container {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--unitra-green);
}

.terminal-unit {
  width: 100%;
  max-width: 1200px;
  height: 85vh;
  display: flex;
  flex-direction: column;
  background: var(--cream);
  border: 4px solid var(--unitra-green-dark);
  overflow: hidden;
}

.control-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--cream);
  border-bottom: 3px solid var(--unitra-green);
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: var(--unitra-green);
  transform: rotate(45deg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon::after {
  content: 'S';
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 24px;
  color: var(--cream);
  transform: rotate(-45deg);
}

.logo-text h1 {
  font-family: var(--font-main);
  font-size: 36px;
  font-weight: 700;
  color: var(--unitra-green);
  letter-spacing: 8px;
  line-height: 1;
}

.logo-text .subtitle {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 4px;
  text-transform: uppercase;
}

.controls {
  display: flex;
  gap: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-icon {
  font-size: 11px;
}

.btn-run {
  background: var(--unitra-green);
  color: var(--cream);
  border-color: var(--unitra-green);
}

.btn-run:hover {
  background: var(--unitra-green-dark);
  border-color: var(--unitra-green-dark);
}

.btn-stop {
  background: var(--accent-red);
  color: white;
  border-color: var(--accent-red);
}

.btn-stop:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-clear {
  background: transparent;
  color: var(--text-dark);
  border-color: var(--text-muted);
}

.btn-clear:hover {
  border-color: var(--text-dark);
}

.btn-example {
  background: var(--accent-yellow);
  color: var(--text-dark);
  border-color: var(--accent-yellow);
}

.btn-tapes {
  background: var(--cream);
  color: var(--unitra-green-dark);
  border-color: var(--unitra-green-dark);
}

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

.btn-example:hover {
  background: #c49028;
  border-color: #c49028;
}

.example-bar {
  padding: 12px 24px;
  font-size: 13px;
  color: var(--text-muted);
  background: var(--cream-dark);
  border-bottom: 1px solid var(--unitra-green-light);
  height: 42px;
  line-height: 18px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.example-bar::before {
  content: "▶ ";
  color: var(--unitra-green);
  font-style: normal;
}

.terminal-body {
  display: flex;
  flex: 1;
  min-height: 0;
  gap: 2px;
  padding: 16px;
  background: var(--unitra-green);
}


.section-header {
  padding: 10px 16px;
  font-family: var(--font-main);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cream);
  background: var(--unitra-green-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.code-section {
  flex: 1.2;
  display: flex;
  flex-direction: column;
  background: var(--terminal-bg);
  overflow: hidden;
}

.editor-wrap {
  display: flex;
  flex: 1;
  min-height: 0;
}

.line-numbers {
  min-width: 44px;
  padding: 12px 10px;
  background: #080c0a;
  color: var(--terminal-green-dim);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  text-align: right;
  user-select: none;
  border-right: 1px solid #1a2a22;
  overflow: hidden;
  white-space: pre;
}

#codeEditor {
  flex: 1;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  background: var(--terminal-bg);
  color: var(--terminal-green);
  border: none;
  outline: none;
  resize: none;
  overflow-y: auto;
}

#codeEditor::placeholder {
  color: #2a4a3a;
}

.io-section {
  flex: 0.8;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.io-panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.input-panel {
  flex: 0 0 auto;
}

.input-panel textarea {
  height: 80px;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--cream);
  color: var(--text-dark);
  border: none;
  outline: none;
  resize: none;
}

.output-panel {
  flex: 1;
  min-height: 0;
  background: var(--terminal-bg);
}

.output-display {
  flex: 1;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  background: var(--terminal-bg);
  color: var(--terminal-green);
  overflow-y: auto;
  white-space: pre-wrap;
  margin: 0;
}

.status {
  padding: 3px 10px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1px;
  background: rgba(255, 255, 255, 0.2);
  color: var(--cream);
}

.status.running {
  background: var(--accent-yellow);
  color: var(--text-dark);
  animation: pulse 1s infinite;
}

.status.success {
  background: var(--terminal-green-dim);
  color: white;
}

.status.error {
  background: var(--accent-red);
  color: white;
}

@keyframes pulse {
  50% {
    opacity: 0.7;
  }
}

.error-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  background: #fff0f0;
  border-top: 2px solid var(--accent-red);
  color: var(--accent-red);
  font-family: var(--font-mono);
  font-size: 12px;
}

.error-label {
  font-family: var(--font-main);
  font-weight: 700;
  letter-spacing: 2px;
}

.error-bar pre {
  margin: 0;
  white-space: pre-wrap;
}

.nameplate {
  padding: 12px 24px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 4px;
  text-align: center;
  color: var(--cream);
  background: var(--unitra-green-dark);
  border-top: 3px solid var(--unitra-green);
}

.nameplate a {
  color: inherit;
  text-decoration: none;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #0a100e;
}

::-webkit-scrollbar-thumb {
  background: var(--terminal-green-dim);
}

.btn-tutorial {
  background: transparent;
  color: var(--unitra-green);
  border-color: var(--unitra-green);
}

.btn-tutorial:hover {
  background: var(--unitra-green);
  color: var(--cream);
}

.modal {
  position: fixed;
  inset: 0;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
}

.modal-content {
  width: 100%;
  max-width: 900px;
  max-height: 85vh;
  background: var(--cream);
  border: 4px solid var(--unitra-green-dark);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform-origin: center center;
}

.modal-content.tv-off {
  animation: tvOff 0.4s ease-in forwards;
}

.modal-content.tv-on {
  animation: tvOn 0.4s ease-out forwards;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--unitra-green);
  color: var(--cream);
  border-bottom: 2px solid var(--unitra-green-dark);
}

.modal-header h2 {
  font-family: var(--font-main);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 4px;
  margin: 0;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--cream);
  font-size: 32px;
  line-height: 1;
  cursor: pointer;
  padding: 0 8px;
}

.modal-close:hover {
  color: var(--accent-yellow);
}

.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 0;
  background: var(--terminal-bg);
}

#tutorialContent {
  margin: 0;
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--terminal-green);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.tape-loader {
  max-width: 500px;
}

.tape-deck {
  padding: 20px;
  background: var(--cream);
  display: flex;
  flex-direction: column;
}

.tape-list {
  min-height: 300px;
  max-height: 400px;
  overflow-y: auto;
  background: var(--terminal-bg);
  border: 2px solid var(--unitra-green-dark);
  padding: 8px;
  margin-bottom: 16px;
}

.new-tape-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.tape-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding-top: 16px;
  border-top: 2px solid var(--unitra-green-dark);
}

.new-tape-row input {
  flex: 1;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 14px;
  border: 2px solid var(--unitra-green-dark);
  background: var(--terminal-bg);
  color: var(--terminal-green);
}

.new-tape-row input::placeholder {
  color: var(--terminal-green-dim);
}

.new-tape-row .btn {
  padding: 10px 16px;
}

.tape-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  cursor: pointer;
  border: 2px solid transparent;
  margin-bottom: 4px;
  transition: all 0.15s ease;
}

.tape-item:hover {
  background: rgba(0, 128, 96, 0.1);
}

.tape-item.selected {
  border-color: var(--terminal-green);
  background: rgba(0, 128, 96, 0.15);
}

.tape-item.loaded {
  border-color: var(--accent-yellow);
}

.tape-icon {
  font-size: 20px;
  color: var(--terminal-green-dim);
}

.tape-info {
  flex: 1;
  overflow: hidden;
}

.tape-name {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--terminal-green);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tape-desc {
  font-family: var(--font-main);
  font-size: 11px;
  color: var(--terminal-green-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.tape-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  padding-top: 16px;
  border-top: 2px solid var(--unitra-green-dark);
}

.tape-actions .btn {
  padding: 10px 20px;
}

.tape-empty {
  color: var(--terminal-green-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: center;
  padding: 40px 20px;
}

.tv-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.tv-screen {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  transform-origin: center center;
  position: relative;
  z-index: 600;
}

.tv-screen.tv-off {
  animation: tvOff 0.4s ease-in forwards;
}

.tv-screen.tv-on {
  animation: tvOn 0.4s ease-out forwards;
}

@keyframes tvOff {
  0% {
    transform: scale(1, 1);
    filter: brightness(1);
  }

  40% {
    transform: scale(1, 0.005);
    filter: brightness(1.5);
  }

  100% {
    transform: scale(0, 0);
    filter: brightness(2);
    opacity: 0;
  }
}

@keyframes tvOn {
  0% {
    transform: scale(0, 0);
    filter: brightness(2);
    opacity: 0;
  }

  40% {
    transform: scale(1, 0.005);
    filter: brightness(1.5);
    opacity: 1;
  }

  100% {
    transform: scale(1, 1);
    filter: brightness(1);
    opacity: 1;
  }
}

.scene-3d {
  position: fixed;
  inset: 0;
  background: #000;
  display: none;
  z-index: 500;
}

.scene-3d.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.scene-3d canvas {
  width: 100%;
  height: 100%;
}

/* Responsive */
@media (max-width: 900px) {
  .app-container {
    padding: 12px;
  }

  .terminal-body {
    flex-direction: column;
  }

  .code-section {
    max-height: 40vh;
  }

  .controls {
    flex-wrap: wrap;
  }

  .logo-text h1 {
    font-size: 28px;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
  }

  .logo-icon::after {
    font-size: 18px;
  }
}