@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600&display=swap");

:root {
  --cg-font-size-xs: 0.75rem;
  --cg-font-size-sm: 0.8125rem;
  --cg-font-size-body: 0.9375rem;
  --cg-text-primary: #f8fafc;
  --cg-text-muted: #b6c1d1;
  --cg-text-subtle: #94a3b8;
  --cg-radius-panel: 24px;
  --cg-radius-control: 12px;
  --cg-space-1: 0.25rem;
  --cg-space-2: 0.5rem;
  --cg-space-3: 0.75rem;
  --cg-space-4: 1rem;
  --cg-touch-target: 44px;
  --cg-mobile-topbar-h: 56px;
  --cg-mobile-actionbar-h: 64px;
}

/* Mobile-only chrome — hidden by default; ≤768px block re-enables. */
.cg-mobile-topbar,
.cg-mobile-actionbar,
.cg-drawer,
.cg-drawer-backdrop,
.cg-hamburger-menu {
  display: none;
}

body {
  margin: 0;
  background: radial-gradient(ellipse 120% 80% at 50% 20%, #1a1f2e 0%, #0f1115 45%, #08090c 100%);
  font-family: "Space Grotesk", sans-serif;
}
#brain-canvas {
  touch-action: none;
}
#brain-canvas canvas {
  display: block;
}
.glass-panel {
  background: rgba(20, 24, 32, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--cg-radius-panel);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.glass-panel--info {
  border-color: rgba(148, 163, 184, 0.24);
}
.glass-panel--warning {
  border-color: rgba(251, 191, 36, 0.35);
}
.thin-scroll::-webkit-scrollbar {
  width: 4px;
}
.thin-scroll::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
}
input[type="range"] {
  accent-color: #fff;
}
.accent-text {
  color: #f1f5f9;
}
.sub-text {
  color: var(--cg-text-subtle);
}
.analysis-panel {
  background: rgba(15, 18, 26, 0.88);
  border-color: rgba(255, 255, 255, 0.12);
  min-width: 17rem;
  max-height: calc(100vh - 8rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  z-index: 1;
}
@media (min-width: 1025px) {
  .cognigraph-middle-col .analysis-panel {
    transition: opacity 0.28s ease;
  }
  .cognigraph-middle-col .analysis-panel.analysis-panel--recessed {
    opacity: 0.48;
  }
}
.cognigraph-input-panel {
  max-height: calc(100vh - 3rem);
  overflow: hidden;
  position: relative;
  z-index: 5;
}
.cognigraph-settings-body {
  min-height: 0;
  flex: 0 1 auto;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.cognigraph-settings-body::-webkit-scrollbar,
.analysis-panel::-webkit-scrollbar {
  width: 6px;
}
.cognigraph-settings-body::-webkit-scrollbar-thumb,
.analysis-panel::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.35);
  border-radius: 3px;
}
.analysis-label {
  color: #d4deea;
  font-size: var(--cg-font-size-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
}
.analysis-body {
  color: #ecf2fb;
  font-size: var(--cg-font-size-sm);
  line-height: 1.55;
}
.analysis-value {
  color: var(--cg-text-primary);
  font-size: var(--cg-font-size-body);
  font-weight: 600;
}
button {
  transition: all 0.2s ease;
}
button:hover {
  transform: translateY(-1px);
}
button:active {
  transform: translateY(1px);
}
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid rgba(148, 199, 255, 0.95);
  outline-offset: 2px;
}
@media (max-width: 1024px) {
  .cognigraph-shell {
    padding: 0.75rem !important;
  }
  .cognigraph-top-row {
    flex-direction: column;
    align-items: stretch !important;
  }
  .cognigraph-input-panel {
    width: 100% !important;
    max-width: 100% !important;
  }
  #prompt {
    min-height: 4.5rem !important;
    height: auto !important;
    font-size: 0.9375rem !important;
  }
  #simulate-btn {
    position: sticky;
    bottom: 0;
    z-index: 6;
    box-shadow: 0 -8px 24px rgba(8, 9, 12, 0.85);
    min-height: var(--cg-touch-target);
    font-size: 0.8125rem !important;
  }
  .cognigraph-middle-col {
    position: relative !important;
    min-height: 0;
  }
  .cognigraph-middle-col .analysis-panel,
  .cognigraph-middle-col .cognigraph-signatures-panel {
    position: relative !important;
    top: auto !important;
    right: auto !important;
    left: auto !important;
    transform: none !important;
    width: 100% !important;
    max-width: 100% !important;
    margin-bottom: 0.75rem;
  }
  .cognigraph-bottom-row {
    flex-direction: column;
    align-items: stretch !important;
  }
  .cognigraph-bottom-row .cognigraph-spacer {
    display: none;
  }
  .cognigraph-bottom-row .cognigraph-timeline-panel {
    max-width: 100% !important;
    order: -1;
  }
  .cognigraph-bottom-row .cognigraph-log-panel {
    width: 100% !important;
    height: auto;
    min-height: 6rem;
  }
  /* Touch-friendly controls: bump the 28px round buttons to 44px. */
  #step-back-btn,
  #step-forward-btn,
  #replay-btn,
  #hpa-help-btn {
    min-width: var(--cg-touch-target);
    min-height: var(--cg-touch-target);
    width: var(--cg-touch-target);
    height: var(--cg-touch-target);
    font-size: 1rem;
  }
  #play-pause-btn {
    min-height: var(--cg-touch-target);
    padding-left: 1.25rem;
    padding-right: 1.25rem;
    font-size: 0.75rem;
  }
  /* Readable mobile typography — lift the 10–11px utility classes. */
  .cognigraph-shell .text-\[10px\],
  .cognigraph-shell .text-\[11px\] {
    font-size: 0.8125rem !important;
    line-height: 1.5 !important;
  }
  .cognigraph-shell .text-xs {
    font-size: 0.8125rem !important;
  }
  #timeline-frame-label {
    font-size: 0.75rem !important;
  }
  /* Mini API-setting pill buttons: ensure adequate hit targets (≥44px). */
  #toggle-settings-btn,
  #save-api-key-btn,
  #clear-api-key-btn,
  #rotate-btn,
  #copy-demo-link-btn {
    min-height: var(--cg-touch-target);
    padding: 0.55rem 1rem;
  }
}

/* ════════════════════════════════════════════════════════════
   Mobile layout (≤768px)
   Full-screen 3D canvas + slim top bar + sticky bottom action bar
   + bottom-sheet drawers that JS moves the panels into.
   ════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  /* Desktop overlay shell stays out of the way; canvas already fills the viewport. */
  .cognigraph-shell {
    display: none !important;
  }

  /* ─── Top bar ─────────────────────────────────────────── */
  .cg-mobile-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: calc(var(--cg-mobile-topbar-h) + env(safe-area-inset-top, 0px));
    padding: env(safe-area-inset-top, 0px) 0.85rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: linear-gradient(to bottom, rgba(30, 38, 54, 0.82) 0%, rgba(30, 38, 54, 0.5) 70%, rgba(30, 38, 54, 0) 100%);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    z-index: 30;
  }
  #cg-hamburger-btn {
    width: var(--cg-touch-target);
    height: var(--cg-touch-target);
    border-radius: 12px;
    background: rgba(54, 66, 88, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.14);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    padding: 0;
    cursor: pointer;
  }
  #cg-hamburger-btn span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--cg-text-primary);
    border-radius: 2px;
    transition: transform 0.22s ease, opacity 0.22s ease;
  }
  #cg-hamburger-btn[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  #cg-hamburger-btn[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }
  #cg-hamburger-btn[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  .cg-mobile-brand-block {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    min-width: 0;
    flex: 1;
  }
  .cg-mobile-brand {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--cg-text-primary);
  }
  .cg-mobile-status {
    font-size: 0.6875rem;
    color: #cbd5e1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* ─── Bottom action bar ─────────────────────────────── */
  .cg-mobile-actionbar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--cg-mobile-actionbar-h) + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    background: linear-gradient(to top, rgba(30, 38, 54, 0.88) 0%, rgba(30, 38, 54, 0.62) 70%, rgba(30, 38, 54, 0) 100%);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    z-index: 30;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
  .cg-mobile-actionbar button {
    background: transparent;
    border: none;
    color: #dbe4f0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    cursor: pointer;
    padding: 0.35rem 0;
    min-height: var(--cg-touch-target);
    font-family: inherit;
  }
  .cg-mobile-actionbar button:active {
    transform: none;
    color: #ffffff;
  }
  .cg-mobile-actionbar .cg-action-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
  }
  .cg-mobile-actionbar .cg-action-icon svg {
    width: 1.35rem;
    height: 1.35rem;
    display: block;
  }
  .cg-mobile-actionbar .cg-action-label {
    font-size: 0.625rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: inherit;
  }
  #cg-mobile-play {
    color: #fde68a;
  }
  #cg-mobile-play .cg-action-icon svg {
    filter: drop-shadow(0 0 4px rgba(253, 230, 138, 0.35));
  }

  /* ─── Backdrop ──────────────────────────────────────── */
  .cg-drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 40;
    opacity: 0;
    transition: opacity 0.24s ease;
    pointer-events: none;
  }
  .cg-drawer-backdrop[data-open] {
    display: block;
    opacity: 1;
    pointer-events: auto;
  }

  /* ─── Bottom-sheet drawers ──────────────────────────── */
  .cg-drawer {
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    max-height: 82vh;
    background: rgba(34, 42, 60, 0.94);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-bottom: none;
    border-radius: 24px 24px 0 0;
    box-shadow: 0 -20px 60px rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    z-index: 50;
    color: var(--cg-text-primary);
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
  .cg-drawer[aria-hidden="false"] {
    transform: translateY(0);
  }
  .cg-drawer-handle {
    width: 40px;
    height: 4px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 999px;
    margin: 10px auto 6px;
    flex-shrink: 0;
  }
  .cg-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.25rem 1.25rem 0.85rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    flex-shrink: 0;
  }
  .cg-drawer-header h2 {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: #f8fafc;
    margin: 0;
  }
  .cg-drawer-close {
    width: var(--cg-touch-target);
    height: var(--cg-touch-target);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #f1f5f9;
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
  }
  .cg-drawer-body {
    flex: 1 1 auto;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 1rem 1rem calc(1rem + var(--cg-mobile-actionbar-h) + env(safe-area-inset-bottom, 0px));
    -webkit-overflow-scrolling: touch;
  }

  /* When panels are inside drawer slots, strip their floating chrome. */
  .cg-drawer-body .glass-panel {
    background: transparent;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-radius: 0;
    padding: 0;
    width: 100% !important;
    max-width: 100% !important;
    max-height: none !important;
    height: auto !important;
    overflow: visible;
    position: static !important;
    transform: none !important;
    top: auto !important;
    right: auto !important;
    left: auto !important;
    margin: 0;
  }
  .cg-drawer-body #log-panel {
    max-height: 50vh;
    font-size: 0.8125rem;
  }
  .cg-drawer-body .analysis-panel {
    min-width: 0 !important;
  }

  /* ─── Hamburger menu (top sheet) ────────────────────── */
  .cg-hamburger-menu {
    position: fixed;
    top: calc(var(--cg-mobile-topbar-h) + env(safe-area-inset-top, 0px));
    left: 0.85rem;
    right: 0.85rem;
    background: rgba(34, 42, 60, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 18px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    z-index: 45;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .cg-hamburger-menu[aria-hidden="false"] {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
  }
  .cg-menu-item {
    display: block;
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    border-radius: 12px;
    padding: 0.75rem 0.9rem;
    color: var(--cg-text-primary);
    font-family: inherit;
    font-size: 0.875rem;
    cursor: pointer;
    text-decoration: none;
    min-height: var(--cg-touch-target);
  }
  .cg-menu-item:hover,
  .cg-menu-item:focus-visible {
    background: rgba(255, 255, 255, 0.12);
  }

  /* Keep toast above drawers/backdrop on small screens. */
  .cg-toast-stack {
    bottom: calc(var(--cg-mobile-actionbar-h) + 0.75rem + env(safe-area-inset-bottom, 0px));
    z-index: 90;
  }
}

/* Analyze loading spinner (paired with .cg-analyze-loading on button) */
@keyframes cg-spin {
  to {
    transform: rotate(360deg);
  }
}
#simulate-btn.cg-analyze-loading {
  position: relative;
  padding-left: 2rem;
}
#simulate-btn.cg-analyze-loading::before {
  content: "";
  position: absolute;
  left: 0.75rem;
  top: 50%;
  width: 0.85rem;
  height: 0.85rem;
  margin-top: -0.425rem;
  border: 2px solid rgba(15, 23, 42, 0.35);
  border-top-color: rgba(15, 23, 42, 0.95);
  border-radius: 50%;
  animation: cg-spin 0.7s linear infinite;
}

/* Toasts */
.cg-toast-stack {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 80;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
  max-width: min(22rem, calc(100vw - 2rem));
  pointer-events: none;
}
.cg-toast-stack .cg-toast {
  pointer-events: auto;
}
.cg-toast {
  background: rgba(15, 18, 26, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--cg-radius-control);
  padding: 0.65rem 0.85rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: var(--cg-font-size-sm);
  line-height: 1.5;
  color: #f0f6ff;
  animation: cg-toast-in 0.22s ease-out;
}
.cg-toast--leave {
  animation: cg-toast-out 0.2s ease-in forwards;
}
.cg-toast--error {
  border-color: rgba(248, 113, 113, 0.45);
}
.cg-toast--warning {
  border-color: rgba(251, 191, 36, 0.45);
}
.cg-toast--info {
  border-color: rgba(56, 189, 248, 0.35);
}
.cg-toast--success {
  border-color: rgba(74, 222, 128, 0.4);
}
.cg-toast__text {
  flex: 1;
  min-width: 0;
}
.cg-toast__close {
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: #94a3b8;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 0.1rem;
}
.cg-toast__close:hover {
  color: #f1f5f9;
}

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

  button:hover,
  button:active {
    transform: none;
  }
}
@keyframes cg-toast-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes cg-toast-out {
  to {
    opacity: 0;
    transform: translateY(6px);
  }
}