:root {
  --panel: #fff;
  --line: #e2e8f0;
  --accent: #e66b16;
  --accent-dark: #c4520c;
  --accent-2: #17324d;
  --text: #18283c;
  --muted: #68778a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(ellipse at 90% 0%, rgba(224, 235, 246, 0.9), transparent 38%),
    #edf2f7;
  overflow: hidden;
}

.app-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(270px, 330px) minmax(0, 1fr);
  gap: 14px;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  max-width: none;
  margin: 0;
  padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right))
    max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

.app-shell.controls-hidden {
  grid-template-columns: minmax(0, 1fr);
}

.app-shell.controls-hidden .panel {
  display: none;
}

.panel,
.canvas-wrap {
  border: 1px solid rgba(203, 213, 225, 0.8);
  border-radius: 20px;
  box-shadow: 0 14px 36px rgba(29, 48, 70, 0.09), 0 2px 6px rgba(29, 48, 70, 0.04);
}

.panel {
  background: var(--panel);
  padding: 24px 20px;
  overflow-y: auto;
}

.panel-header {
  margin-bottom: 22px;
}

.eyebrow {
  display: block;
  margin-bottom: 7px;
  color: var(--accent-dark);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.7rem, 2vw, 2.1rem);
  letter-spacing: -0.045em;
}

.subtitle {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.control-section + .control-section {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.section-title {
  margin: 0 0 14px;
  color: var(--text);
  font-size: 0.98rem;
  letter-spacing: -0.015em;
}

label {
  display: block;
  margin-bottom: 8px;
  color: #394b60;
  font-size: 0.84rem;
  font-weight: 700;
}

select,
input[type="range"] {
  width: 100%;
}

select {
  appearance: none;
  border: 1px solid #d7e0e9;
  border-radius: 12px;
  font: inherit;
  background: #fff;
  padding: 11px 40px 11px 13px;
  margin-bottom: 18px;
  min-height: 48px;
  color: var(--text);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2368778a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 13px center;
  cursor: pointer;
}

.controls-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px 12px;
}

.controls-row label {
  margin: 0;
}

#detail {
  grid-column: 1 / -1;
  accent-color: var(--accent);
  margin: 0;
  cursor: pointer;
}

#detail-value {
  justify-self: end;
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
  color: var(--accent-dark);
}

.button-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin: 0;
}

.view-row #reset-view-btn {
  grid-column: 1 / -1;
}

.control-hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

button {
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 10px 12px;
  min-height: 46px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

button:hover {
  box-shadow: 0 4px 12px rgba(23, 50, 77, 0.14);
}

button:active {
  box-shadow: none;
}

button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(230, 107, 22, 0.35);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-secondary {
  border-color: #d9e2eb;
  background: #f5f8fb;
  color: var(--accent-2);
}

.btn-secondary:hover {
  border-color: #bdcbd8;
  background: #eaf0f5;
}

.description {
  margin: 0;
  padding: 14px;
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  background: #f5f8fb;
  color: #536479;
  font-size: 0.9rem;
  line-height: 1.5;
}

.canvas-wrap {
  background: #fff;
  padding: 10px;
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 10px;
  height: 100%;
  min-height: 0;
  position: relative;
}

canvas {
  width: 100%;
  height: 100%;
  border-radius: 14px;
  background: #090b14;
  border: 1px solid rgba(255, 255, 255, 0.28);
  cursor: grab;
  touch-action: none;
  user-select: none;
  min-height: 0;
}

canvas.is-panning {
  cursor: grabbing;
}

.toggle-controls-btn {
  position: absolute;
  top: 22px;
  left: 22px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  padding: 9px 14px;
  background: rgba(14, 25, 40, 0.72);
  color: #fff;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  z-index: 3;
  backdrop-filter: blur(12px);
}

.toggle-controls-btn:hover {
  background: rgba(14, 25, 40, 0.9);
}

.status {
  min-width: 0;
  padding: 2px 4px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.76rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr) auto;
    gap: 10px;
    padding: max(10px, env(safe-area-inset-top)) max(10px, env(safe-area-inset-right))
      max(10px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left));
  }

  .panel {
    order: 2;
    max-height: 40vh;
    max-height: 40dvh;
    padding: 14px 16px;
    -webkit-overflow-scrolling: touch;
  }

  .panel-header {
    margin-bottom: 14px;
  }

  .control-section + .control-section {
    margin-top: 14px;
    padding-top: 12px;
  }

  .section-title {
    margin-bottom: 9px;
    font-size: 0.88rem;
  }

  .eyebrow {
    margin-bottom: 3px;
    font-size: 0.61rem;
  }

  .canvas-wrap {
    order: 1;
    min-height: 0;
    height: 100%;
  }

  canvas {
    height: 100%;
  }

  h1 {
    font-size: 1.45rem;
  }

  .subtitle {
    font-size: 0.82rem;
  }

  select {
    min-height: 44px;
    padding: 8px 36px 8px 10px;
    margin-bottom: 12px;
    font-size: 0.9rem;
  }

  .button-row {
    gap: 6px;
  }

  .action-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .view-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .button-row button {
    min-height: 42px;
    padding: 8px 5px;
    font-size: 0.78rem;
  }

  .description {
    font-size: 0.8rem;
    padding: 8px 10px;
  }

  .control-hint {
    display: none;
  }

  .app-shell.controls-hidden {
    grid-template-rows: minmax(0, 1fr);
  }

  .app-shell.controls-hidden .panel {
    display: none;
  }

  .app-shell.controls-hidden canvas {
    height: 100%;
  }

  .toggle-controls-btn {
    top: 16px;
    left: 16px;
    min-height: 40px;
    padding: 6px 11px;
    font-size: 0.72rem;
  }
}

@media (max-width: 480px) {
  .view-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .view-row #reset-view-btn {
    grid-column: 1 / -1;
  }
}

@media (max-width: 900px) and (orientation: landscape) {
  .app-shell {
    grid-template-columns: minmax(220px, 30vw) minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
  }

  .panel {
    order: 0;
    max-height: none;
  }

  .canvas-wrap {
    order: 0;
  }

  .app-shell.controls-hidden {
    grid-template-columns: minmax(0, 1fr);
  }

  .app-shell.controls-hidden .panel {
    display: none;
  }
}

@media (max-height: 500px) and (orientation: landscape) {
  .panel {
    padding: 10px 14px;
  }

  .panel-header {
    margin-bottom: 10px;
  }

  .control-section + .control-section {
    margin-top: 10px;
    padding-top: 8px;
  }

  h1 {
    font-size: 1.25rem;
  }

  .subtitle {
    display: none;
  }

  select {
    margin-bottom: 10px;
  }

  .button-row {
    gap: 5px;
    margin: 10px 0;
  }

  .button-row button {
    min-height: 38px;
    padding: 5px;
    font-size: 0.78rem;
  }

  .description {
    padding: 8px 10px;
    font-size: 0.78rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}