/* ============================================================
   Theme overrides
   Each [data-theme] block overrides the :root custom properties
   defined in index.css. "Original" is the default (no attribute).
   ============================================================ */

/* ── Light ("Bleached Linen") ──────────────────────────────── */
:root[data-theme='light'] {
  --background: 40 18% 97%;
  --foreground: 220 20% 14%;
  --card: 0 0% 100%;
  --card-foreground: 220 20% 14%;
  --popover: 0 0% 100%;
  --popover-foreground: 220 20% 14%;
  --primary: 153 65% 30%;
  --primary-foreground: 0 0% 100%;
  --secondary: 36 12% 92%;
  --secondary-foreground: 220 15% 28%;
  --muted: 40 10% 94%;
  --muted-foreground: 220 8% 46%;
  --accent: 36 14% 90%;
  --accent-foreground: 220 20% 14%;
  --destructive: 0 84% 42%;
  --destructive-foreground: 0 0% 100%;
  --border: 36 10% 84%;
  --input: 36 10% 84%;
  --ring: 153 65% 30%;
  --msg-outgoing: 153 18% 92%;
  --msg-incoming: 40 8% 95%;
  --status-connected: 145 63% 38%;
  --status-disconnected: 220 8% 64%;
  --warning: 38 92% 45%;
  --warning-foreground: 38 92% 14%;
  --success: 145 63% 32%;
  --success-foreground: 0 0% 100%;
  --info: 217 91% 48%;
  --info-foreground: 0 0% 100%;
  --region-override: 274 78% 24%;
  --favorite: 43 96% 50%;
  --console: 153 50% 22%;
  --console-command: 153 55% 18%;
  --console-bg: 40 10% 94%;
  --toast-error: 0 40% 96%;
  --toast-error-foreground: 0 70% 38%;
  --toast-error-border: 0 30% 86%;
  --code-editor-bg: 40 8% 94%;
  --scrollbar: 36 8% 76%;
  --scrollbar-hover: 36 8% 64%;
  --overlay: 220 20% 10%;
}

:root[data-theme='light'] .sidebar-tool-label {
  color: hsl(var(--foreground));
}

/* ── Windows 95 ───────────────────────────────────────────── */
:root[data-theme='windows-95'] {
  --background: 180 100% 25%;
  --foreground: 0 0% 0%;
  --card: 0 0% 75%;
  --card-foreground: 0 0% 0%;
  --popover: 0 0% 75%;
  --popover-foreground: 0 0% 0%;
  --primary: 240 100% 25%;
  --primary-foreground: 0 0% 100%;
  --secondary: 0 0% 84%;
  --secondary-foreground: 0 0% 0%;
  --muted: 0 0% 80%;
  --muted-foreground: 0 0% 18%;
  --accent: 0 0% 88%;
  --accent-foreground: 0 0% 0%;
  --destructive: 0 82% 44%;
  --destructive-foreground: 0 0% 100%;
  --border: 0 0% 47%;
  --input: 0 0% 47%;
  --ring: 240 100% 25%;
  --radius: 0px;
  --msg-outgoing: 210 100% 92%;
  --msg-incoming: 0 0% 92%;
  --status-connected: 142 75% 32%;
  --status-disconnected: 0 0% 35%;
  --warning: 45 100% 38%;
  --warning-foreground: 0 0% 0%;
  --success: 142 75% 28%;
  --success-foreground: 0 0% 100%;
  --info: 210 100% 42%;
  --info-foreground: 0 0% 100%;
  --region-override: 300 100% 28%;
  --favorite: 44 100% 50%;
  --console: 120 100% 22%;
  --console-command: 120 100% 28%;
  --console-bg: 0 0% 0%;
  --toast-error: 0 0% 86%;
  --toast-error-foreground: 0 72% 30%;
  --toast-error-border: 0 0% 38%;
  --code-editor-bg: 0 0% 94%;
  --font-sans: Tahoma, 'MS Sans Serif', 'Segoe UI', sans-serif;
  --font-mono: 'Courier New', monospace;
  --scrollbar: 0 0% 62%;
  --scrollbar-hover: 0 0% 48%;
  --overlay: 0 0% 0%;
}

[data-theme='windows-95'] body {
  background: hsl(180 100% 25%);
}

[data-theme='windows-95'] .bg-card,
[data-theme='windows-95'] .bg-popover,
[data-theme='windows-95'] .bg-secondary,
[data-theme='windows-95'] .bg-muted {
  box-shadow:
    inset 1px 1px 0 hsl(0 0% 100%),
    inset -1px -1px 0 hsl(0 0% 34%);
}

[data-theme='windows-95'] button,
[data-theme='windows-95'] input,
[data-theme='windows-95'] select,
[data-theme='windows-95'] textarea {
  border-radius: 0 !important;
}

[data-theme='windows-95'] button {
  background: hsl(0 0% 75%);
  color: hsl(0 0% 0%);
  padding: 0.35rem 0.75rem;
  box-shadow:
    inset 1px 1px 0 hsl(0 0% 100%),
    inset -1px -1px 0 hsl(0 0% 34%);
}

[data-theme='windows-95'] .avatar-action-button {
  background: transparent;
  padding: 0;
  box-shadow: none;
}

[data-theme='windows-95'] button:active,
[data-theme='windows-95'] button:active {
  box-shadow:
    inset -1px -1px 0 hsl(0 0% 100%),
    inset 1px 1px 0 hsl(0 0% 34%);
}

[data-theme='windows-95'] input,
[data-theme='windows-95'] select,
[data-theme='windows-95'] textarea {
  background: hsl(0 0% 100%);
  box-shadow:
    inset 1px 1px 0 hsl(0 0% 34%),
    inset -1px -1px 0 hsl(0 0% 100%);
}

[data-theme='windows-95'] .bg-msg-incoming,
[data-theme='windows-95'] .bg-msg-outgoing {
  box-shadow:
    inset 1px 1px 0 hsl(0 0% 100%),
    inset -1px -1px 0 hsl(0 0% 34%);
}

[data-theme='windows-95'] .conversation-header {
  background: hsl(240 100% 25%);
  color: hsl(0 0% 100%);
  box-shadow:
    inset 1px 1px 0 hsl(0 0% 100% / 0.35),
    inset -1px -1px 0 hsl(240 100% 14%);
}

[data-theme='windows-95'] .conversation-header .text-muted-foreground,
[data-theme='windows-95'] .conversation-header .text-foreground,
[data-theme='windows-95'] .conversation-header .text-primary,
[data-theme='windows-95'] .conversation-header button,
[data-theme='windows-95'] .conversation-header [role='button'] {
  color: hsl(0 0% 100%);
}

[data-theme='windows-95'] .conversation-header button {
  background: hsl(240 100% 25%);
  box-shadow: none;
}

[data-theme='windows-95'] .conversation-header .lucide-info {
  color: hsl(0 0% 100%);
}

[data-theme='windows-95'] .message-input-shell {
  background: hsl(0 0% 75%);
  box-shadow:
    inset 1px 1px 0 hsl(0 0% 100%),
    inset -1px -1px 0 hsl(0 0% 34%);
}

@media (min-width: 768px) {
  [data-theme='windows-95'] * {
    scrollbar-width: auto;
    scrollbar-color: hsl(0 0% 75%) hsl(0 0% 84%);
  }

  [data-theme='windows-95'] ::-webkit-scrollbar {
    width: 16px;
    height: 16px;
  }

  [data-theme='windows-95'] ::-webkit-scrollbar-track,
  [data-theme='windows-95'] ::-webkit-scrollbar-corner {
    background: hsl(0 0% 84%);
    box-shadow:
      inset 1px 1px 0 hsl(0 0% 100%),
      inset -1px -1px 0 hsl(0 0% 34%);
  }

  [data-theme='windows-95'] ::-webkit-scrollbar-thumb {
    background: hsl(0 0% 75%);
    border-radius: 0;
    box-shadow:
      inset 1px 1px 0 hsl(0 0% 100%),
      inset -1px -1px 0 hsl(0 0% 34%);
  }

  [data-theme='windows-95'] ::-webkit-scrollbar-thumb:hover {
    background: hsl(0 0% 80%);
  }

  [data-theme='windows-95'] ::-webkit-scrollbar-thumb:active {
    box-shadow:
      inset -1px -1px 0 hsl(0 0% 100%),
      inset 1px 1px 0 hsl(0 0% 34%);
  }

  [data-theme='windows-95'] ::-webkit-scrollbar-button:single-button {
    display: block;
    background: hsl(0 0% 75%);
    height: 16px;
    width: 16px;
    box-shadow:
      inset 1px 1px 0 hsl(0 0% 100%),
      inset -1px -1px 0 hsl(0 0% 34%);
  }
}

/* ── iPhone / iOS ─────────────────────────────────────────── */
:root[data-theme='ios'] {
  --background: 240 18% 96%;
  --foreground: 220 18% 14%;
  --card: 0 0% 100%;
  --card-foreground: 220 18% 14%;
  --popover: 0 0% 100%;
  --popover-foreground: 220 18% 14%;
  --primary: 211 100% 50%;
  --primary-foreground: 0 0% 100%;
  --secondary: 240 10% 92%;
  --secondary-foreground: 220 10% 26%;
  --muted: 240 10% 94%;
  --muted-foreground: 220 8% 45%;
  --accent: 240 12% 90%;
  --accent-foreground: 220 18% 14%;
  --destructive: 3 100% 59%;
  --destructive-foreground: 0 0% 100%;
  --border: 240 7% 84%;
  --input: 240 7% 84%;
  --ring: 211 100% 50%;
  --radius: 1.35rem;
  --msg-outgoing: 211 100% 50%;
  --msg-incoming: 240 12% 90%;
  --status-connected: 134 61% 49%;
  --status-disconnected: 240 5% 60%;
  --warning: 35 100% 50%;
  --warning-foreground: 0 0% 100%;
  --success: 134 61% 42%;
  --success-foreground: 0 0% 100%;
  --info: 188 100% 43%;
  --info-foreground: 0 0% 100%;
  --region-override: 279 100% 67%;
  --favorite: 47 100% 50%;
  --console: 134 61% 40%;
  --console-command: 134 61% 34%;
  --console-bg: 0 0% 100%;
  --toast-error: 0 0% 100%;
  --toast-error-foreground: 3 70% 46%;
  --toast-error-border: 240 7% 84%;
  --code-editor-bg: 240 16% 97%;
  --font-sans:
    -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', SFMono-Regular, ui-monospace, monospace;
  --scrollbar: 240 8% 76%;
  --scrollbar-hover: 240 8% 64%;
  --overlay: 220 30% 8%;
}

[data-theme='ios'] body {
  background:
    radial-gradient(circle at top, hsl(211 100% 97%), transparent 40%),
    linear-gradient(180deg, hsl(240 25% 98%), hsl(240 16% 95%));
}

[data-theme='ios'] .bg-card,
[data-theme='ios'] .bg-popover {
  background: hsl(0 0% 100% / 0.82);
  backdrop-filter: saturate(180%) blur(24px);
  box-shadow:
    0 14px 32px hsl(220 30% 10% / 0.08),
    0 1px 0 hsl(0 0% 100% / 0.7) inset;
}

[data-theme='ios'] button,
[data-theme='ios'] [role='button'] {
  font-weight: 600;
}

[data-theme='ios'] input,
[data-theme='ios'] select,
[data-theme='ios'] textarea {
  background: hsl(0 0% 100% / 0.9);
  box-shadow: 0 1px 2px hsl(220 30% 10% / 0.06) inset;
}

[data-theme='ios'] .bg-msg-outgoing {
  color: hsl(0 0% 100%);
  box-shadow: 0 10px 24px hsl(211 100% 50% / 0.18);
}

[data-theme='ios'] .bg-msg-incoming {
  box-shadow: 0 8px 18px hsl(220 30% 10% / 0.08);
}

/* ── Cyberpunk ("Neon Bleed") ──────────────────────────────── */
:root[data-theme='cyberpunk'] {
  --background: 210 18% 3%;
  --foreground: 120 8% 82%;
  --card: 180 12% 6%;
  --card-foreground: 120 8% 82%;
  --popover: 180 12% 7%;
  --popover-foreground: 120 8% 82%;
  --primary: 135 100% 50%;
  --primary-foreground: 135 100% 6%;
  --secondary: 150 10% 10%;
  --secondary-foreground: 120 12% 72%;
  --muted: 160 6% 9%;
  --muted-foreground: 120 8% 48%;
  --accent: 150 14% 12%;
  --accent-foreground: 120 8% 82%;
  --destructive: 340 100% 59%;
  --destructive-foreground: 340 100% 6%;
  --border: 135 30% 14%;
  --input: 135 30% 14%;
  --ring: 135 100% 50%;
  --radius: 0px;
  --msg-outgoing: 135 28% 7%;
  --msg-incoming: 210 10% 6%;
  --status-connected: 135 100% 45%;
  --status-disconnected: 135 8% 32%;
  --warning: 62 100% 49%;
  --warning-foreground: 62 100% 8%;
  --success: 135 100% 42%;
  --success-foreground: 135 100% 6%;
  --info: 185 100% 42%;
  --info-foreground: 185 100% 6%;
  --region-override: 292 100% 68%;
  --favorite: 62 100% 52%;
  --console: 135 100% 50%;
  --console-command: 135 100% 62%;
  --console-bg: 0 0% 1%;
  --toast-error: 340 50% 10%;
  --toast-error-foreground: 340 80% 72%;
  --toast-error-border: 340 40% 18%;
  --code-editor-bg: 150 12% 5%;
  --font-mono: 'Courier New', 'Lucida Console', monospace;
  --scrollbar: 135 20% 12%;
  --scrollbar-hover: 135 30% 18%;
  --overlay: 0 0% 0%;
}

/* ── High Contrast ("Beacon") ──────────────────────────────── */
:root[data-theme='high-contrast'] {
  --background: 0 0% 0%;
  --foreground: 0 0% 100%;
  --card: 0 0% 8%;
  --card-foreground: 0 0% 100%;
  --popover: 0 0% 8%;
  --popover-foreground: 0 0% 100%;
  --primary: 212 100% 62%;
  --primary-foreground: 0 0% 0%;
  --secondary: 0 0% 12%;
  --secondary-foreground: 0 0% 92%;
  --muted: 0 0% 10%;
  --muted-foreground: 0 0% 66%;
  --accent: 0 0% 14%;
  --accent-foreground: 0 0% 100%;
  --destructive: 355 100% 50%;
  --destructive-foreground: 0 0% 0%;
  --border: 0 0% 22%;
  --input: 0 0% 22%;
  --ring: 212 100% 62%;
  --radius: 1rem;
  --msg-outgoing: 212 30% 10%;
  --msg-incoming: 0 0% 8%;
  --status-connected: 140 72% 48%;
  --status-disconnected: 0 0% 50%;
  --warning: 43 100% 50%;
  --warning-foreground: 43 100% 8%;
  --success: 140 72% 44%;
  --success-foreground: 0 0% 100%;
  --info: 212 100% 58%;
  --info-foreground: 0 0% 100%;
  --region-override: 286 100% 76%;
  --favorite: 43 100% 54%;
  --console: 212 100% 62%;
  --console-command: 212 100% 74%;
  --console-bg: 0 0% 2%;
  --toast-error: 355 40% 10%;
  --toast-error-foreground: 355 80% 72%;
  --toast-error-border: 355 30% 20%;
  --code-editor-bg: 0 0% 6%;
  --font-sans: Verdana, Geneva, 'DejaVu Sans', sans-serif;
  --font-mono: 'Lucida Console', 'Cascadia Mono', 'Courier New', monospace;
  --scrollbar: 0 0% 24%;
  --scrollbar-hover: 0 0% 36%;
  --overlay: 0 0% 0%;
}

/* ── Obsidian Glass ("Noir Lustre") ────────────────────────── */
:root[data-theme='obsidian-glass'] {
  --background: 220 16% 5%;
  --foreground: 30 10% 85%;
  --card: 224 14% 10%;
  --card-foreground: 30 10% 85%;
  --popover: 224 14% 11%;
  --popover-foreground: 30 10% 85%;
  --primary: 30 50% 62%;
  --primary-foreground: 30 50% 8%;
  --secondary: 220 12% 13%;
  --secondary-foreground: 30 8% 72%;
  --muted: 220 10% 11%;
  --muted-foreground: 220 6% 50%;
  --accent: 224 12% 15%;
  --accent-foreground: 30 10% 85%;
  --destructive: 0 62% 52%;
  --destructive-foreground: 0 0% 100%;
  --border: 224 12% 18%;
  --input: 224 12% 18%;
  --ring: 30 50% 62%;
  --msg-outgoing: 30 14% 11%;
  --msg-incoming: 220 12% 9%;
  --status-connected: 148 52% 44%;
  --status-disconnected: 220 6% 40%;
  --warning: 38 80% 52%;
  --warning-foreground: 38 80% 8%;
  --success: 148 52% 40%;
  --success-foreground: 0 0% 100%;
  --info: 210 50% 56%;
  --info-foreground: 0 0% 100%;
  --region-override: 273 72% 72%;
  --favorite: 38 70% 56%;
  --console: 30 40% 58%;
  --console-command: 30 40% 70%;
  --console-bg: 220 16% 3%;
  --toast-error: 0 26% 12%;
  --toast-error-foreground: 0 50% 68%;
  --toast-error-border: 0 20% 20%;
  --code-editor-bg: 224 14% 7%;
  --scrollbar: 224 10% 16%;
  --scrollbar-hover: 224 10% 24%;
  --overlay: 220 20% 2%;
}

/* ── Obsidian Glass: gradient surface overrides ──────────── */
[data-theme='obsidian-glass'] .bg-card {
  background: linear-gradient(135deg, hsl(224 14% 9%), hsl(232 12% 12%));
}

[data-theme='obsidian-glass'] .bg-popover {
  background: linear-gradient(135deg, hsl(224 14% 10%), hsl(232 12% 13%));
}

[data-theme='obsidian-glass'] .bg-msg-outgoing {
  background: linear-gradient(135deg, hsl(30 16% 10%), hsl(350 10% 9%));
}

[data-theme='obsidian-glass'] .bg-msg-incoming {
  background: linear-gradient(135deg, hsl(220 14% 8%), hsl(232 10% 10%));
}

[data-theme='obsidian-glass'] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, hsl(30 14% 18%), hsl(224 10% 14%));
}

[data-theme='obsidian-glass'] ::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, hsl(30 14% 24%), hsl(224 10% 20%));
}

/* ── Solar Flare ("Plasma Burn") ─────────────────────────── */

@keyframes sf-glow-pulse {
  0%,
  100% {
    filter: drop-shadow(0 0 4px hsl(338 100% 50% / 0.3));
  }
  50% {
    filter: drop-shadow(0 0 10px hsl(338 100% 50% / 0.5))
      drop-shadow(0 0 20px hsl(24 100% 50% / 0.2));
  }
}

@keyframes sf-msg-highlight {
  0% {
    box-shadow:
      0 0 0 2px hsl(338 100% 50%),
      0 0 20px hsl(338 100% 50% / 0.4);
  }
  100% {
    box-shadow:
      0 0 0 2px transparent,
      0 0 0 transparent;
  }
}

:root[data-theme='solar-flare'] {
  --background: 350 28% 4%;
  --foreground: 38 18% 92%;
  --card: 345 22% 7%;
  --card-foreground: 38 18% 92%;
  --popover: 345 22% 8%;
  --popover-foreground: 38 18% 92%;
  --primary: 338 100% 50%;
  --primary-foreground: 0 0% 100%;
  --secondary: 346 18% 12%;
  --secondary-foreground: 38 14% 78%;
  --muted: 346 16% 10%;
  --muted-foreground: 348 10% 50%;
  --accent: 346 20% 15%;
  --accent-foreground: 38 18% 92%;
  --destructive: 0 85% 52%;
  --destructive-foreground: 0 0% 100%;
  --border: 342 18% 18%;
  --input: 342 18% 18%;
  --ring: 338 100% 50%;
  --radius: 0px;
  --msg-outgoing: 338 26% 10%;
  --msg-incoming: 345 16% 8%;
  --status-connected: 82 80% 48%;
  --status-disconnected: 348 12% 38%;
  --warning: 30 100% 54%;
  --warning-foreground: 30 100% 6%;
  --success: 82 80% 44%;
  --success-foreground: 0 0% 100%;
  --info: 198 80% 54%;
  --info-foreground: 0 0% 100%;
  --region-override: 282 100% 72%;
  --favorite: 46 100% 54%;
  --console: 338 100% 54%;
  --console-command: 338 100% 68%;
  --console-bg: 0 0% 1%;
  --toast-error: 0 38% 10%;
  --toast-error-foreground: 0 66% 72%;
  --toast-error-border: 0 32% 20%;
  --code-editor-bg: 345 20% 5%;
  --font-mono: 'Courier New', 'Lucida Console', monospace;
  --scrollbar: 338 28% 16%;
  --scrollbar-hover: 338 38% 24%;
  --overlay: 350 30% 2%;
}

/* Solar Flare: Scan-line background texture */
[data-theme='solar-flare'] body {
  background:
    repeating-linear-gradient(
      0deg,
      transparent 0px,
      transparent 3px,
      hsl(338 100% 50% / 0.015) 3px,
      hsl(338 100% 50% / 0.015) 4px
    ),
    hsl(350 28% 4%);
}

/* Solar Flare: Gradient surfaces */
[data-theme='solar-flare'] .bg-card {
  background: linear-gradient(145deg, hsl(345 22% 7%), hsl(338 18% 9%));
}

[data-theme='solar-flare'] .bg-popover {
  background: linear-gradient(145deg, hsl(345 22% 8%), hsl(338 18% 10%));
}

[data-theme='solar-flare'] .bg-msg-outgoing {
  background: linear-gradient(135deg, hsl(338 28% 10%), hsl(350 20% 8%));
  border-left: 2px solid hsl(338 100% 50% / 0.5);
}

[data-theme='solar-flare'] .bg-msg-incoming {
  background: linear-gradient(135deg, hsl(345 16% 8%), hsl(352 12% 7%));
  border-left: 2px solid hsl(24 80% 50% / 0.25);
}

/* Solar Flare: Primary elements get magenta-to-orange gradient */
[data-theme='solar-flare'] .bg-primary {
  background: linear-gradient(135deg, hsl(338 100% 48%), hsl(355 90% 46%), hsl(14 90% 48%));
  background-size: 200% 200%;
  background-position: 0% 50%;
  transition: background-position 0.4s ease;
}

[data-theme='solar-flare'] .bg-primary:hover {
  background-position: 100% 50%;
}

/* Solar Flare: Chamfered button corners + hover glow */
[data-theme='solar-flare'] button {
  clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
  transition:
    filter 0.2s ease,
    transform 0.12s ease,
    background-color 0.15s ease,
    background-position 0.4s ease,
    color 0.15s ease;
}

[data-theme='solar-flare'] button:hover {
  filter: drop-shadow(0 0 6px hsl(338 100% 50% / 0.45)) drop-shadow(0 0 14px hsl(24 100% 50% / 0.2));
  transform: scale(1.02);
}

[data-theme='solar-flare'] button:active {
  transform: scale(0.97);
  filter: drop-shadow(0 0 3px hsl(338 100% 50% / 0.5));
}

/* Solar Flare: Input focus glow */
[data-theme='solar-flare'] input:focus,
[data-theme='solar-flare'] textarea:focus {
  box-shadow:
    0 0 0 1px hsl(338 100% 50% / 0.5),
    0 0 10px hsl(338 100% 50% / 0.2);
  outline: none;
}

/* Solar Flare: Primary text glow */
[data-theme='solar-flare'] .text-primary {
  text-shadow: 0 0 10px hsl(338 100% 50% / 0.3);
}

/* Solar Flare: Enhanced jump-to-message highlight */
[data-theme='solar-flare'] .message-highlight {
  animation: sf-msg-highlight 2s ease-out forwards;
}

/* Solar Flare: Gradient scrollbar */
[data-theme='solar-flare'] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, hsl(338 80% 36%), hsl(24 80% 36%));
}

[data-theme='solar-flare'] ::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, hsl(338 90% 48%), hsl(24 90% 48%));
}

/* ── Lagoon Pop ("Tidal Candy") ───────────────────────────── */
:root[data-theme='lagoon-pop'] {
  --background: 197 62% 9%;
  --foreground: 42 33% 92%;
  --card: 197 46% 13%;
  --card-foreground: 42 33% 92%;
  --popover: 197 46% 14%;
  --popover-foreground: 42 33% 92%;
  --primary: 175 72% 49%;
  --primary-foreground: 196 60% 9%;
  --secondary: 197 34% 18%;
  --secondary-foreground: 42 22% 84%;
  --muted: 197 30% 16%;
  --muted-foreground: 195 16% 64%;
  --accent: 205 46% 22%;
  --accent-foreground: 42 33% 92%;
  --destructive: 8 88% 61%;
  --destructive-foreground: 196 60% 9%;
  --border: 191 34% 24%;
  --input: 191 34% 24%;
  --ring: 175 72% 49%;
  --radius: 1rem;
  --msg-outgoing: 184 46% 16%;
  --msg-incoming: 204 34% 14%;
  --status-connected: 167 76% 46%;
  --status-disconnected: 204 12% 46%;
  --warning: 41 100% 58%;
  --warning-foreground: 38 100% 10%;
  --success: 167 76% 42%;
  --success-foreground: 196 60% 9%;
  --info: 229 90% 72%;
  --info-foreground: 232 56% 14%;
  --region-override: 277 88% 76%;
  --favorite: 49 100% 63%;
  --console: 175 72% 54%;
  --console-command: 175 78% 68%;
  --console-bg: 198 68% 7%;
  --toast-error: 8 38% 14%;
  --toast-error-foreground: 10 86% 77%;
  --toast-error-border: 8 30% 24%;
  --code-editor-bg: 198 44% 11%;
  --font-sans: 'Trebuchet MS', 'Avenir Next', 'Segoe UI', sans-serif;
  --scrollbar: 191 34% 22%;
  --scrollbar-hover: 191 40% 30%;
  --overlay: 198 80% 4%;
}

[data-theme='lagoon-pop'] body {
  background:
    radial-gradient(circle at top left, hsl(175 72% 49% / 0.1), transparent 28%),
    radial-gradient(circle at top right, hsl(229 90% 72% / 0.1), transparent 24%),
    radial-gradient(circle at bottom center, hsl(8 88% 61% / 0.08), transparent 26%),
    hsl(197 62% 9%);
}

[data-theme='lagoon-pop'] .bg-card {
  background: linear-gradient(145deg, hsl(197 46% 14%), hsl(205 40% 16%));
}

[data-theme='lagoon-pop'] .bg-popover {
  background: linear-gradient(145deg, hsl(197 46% 15%), hsl(205 40% 17%));
}

[data-theme='lagoon-pop'] .bg-msg-outgoing {
  background: linear-gradient(135deg, hsl(184 48% 16%), hsl(175 38% 19%));
  border-left: 2px solid hsl(175 72% 49% / 0.45);
}

[data-theme='lagoon-pop'] .bg-msg-incoming {
  background: linear-gradient(135deg, hsl(204 34% 14%), hsl(214 30% 16%));
  border-left: 2px solid hsl(229 90% 72% / 0.35);
}

[data-theme='lagoon-pop'] .bg-primary {
  background: linear-gradient(135deg, hsl(175 72% 49%), hsl(191 78% 56%));
}

[data-theme='lagoon-pop'] button {
  transition:
    transform 0.12s ease,
    filter 0.2s ease,
    background-color 0.15s ease,
    color 0.15s ease;
}

[data-theme='lagoon-pop'] button:hover {
  filter: drop-shadow(0 0 10px hsl(175 72% 49% / 0.18));
}

[data-theme='lagoon-pop'] button:active {
  transform: translateY(1px);
}

[data-theme='lagoon-pop'] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, hsl(175 40% 32%), hsl(229 38% 40%));
}

[data-theme='lagoon-pop'] ::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, hsl(175 52% 42%), hsl(229 52% 54%));
}

/* ── Candy Dusk ("Dream Arcade") ──────────────────────────── */
:root[data-theme='candy-dusk'] {
  --background: 258 38% 10%;
  --foreground: 302 30% 93%;
  --card: 258 30% 15%;
  --card-foreground: 302 30% 93%;
  --popover: 258 30% 16%;
  --popover-foreground: 302 30% 93%;
  --primary: 325 100% 74%;
  --primary-foreground: 258 38% 12%;
  --secondary: 255 24% 20%;
  --secondary-foreground: 291 20% 85%;
  --muted: 255 20% 18%;
  --muted-foreground: 265 12% 66%;
  --accent: 251 28% 24%;
  --accent-foreground: 302 30% 93%;
  --destructive: 9 88% 66%;
  --destructive-foreground: 258 38% 12%;
  --border: 256 24% 28%;
  --input: 256 24% 28%;
  --ring: 325 100% 74%;
  --radius: 1.25rem;
  --msg-outgoing: 307 32% 20%;
  --msg-incoming: 250 24% 18%;
  --status-connected: 164 78% 58%;
  --status-disconnected: 255 10% 48%;
  --warning: 43 100% 63%;
  --warning-foreground: 36 100% 12%;
  --success: 164 78% 54%;
  --success-foreground: 258 38% 12%;
  --info: 191 90% 76%;
  --info-foreground: 242 32% 18%;
  --region-override: 278 100% 82%;
  --favorite: 43 100% 66%;
  --console: 191 90% 76%;
  --console-command: 325 100% 82%;
  --console-bg: 252 42% 8%;
  --toast-error: 352 34% 16%;
  --toast-error-foreground: 8 92% 82%;
  --toast-error-border: 352 24% 26%;
  --code-editor-bg: 255 28% 13%;
  --font-sans: 'Nunito', 'Trebuchet MS', 'Segoe UI', sans-serif;
  --scrollbar: 256 28% 24%;
  --scrollbar-hover: 256 34% 32%;
  --overlay: 258 40% 6%;
}

[data-theme='candy-dusk'] body {
  background:
    radial-gradient(circle at 20% 10%, hsl(325 100% 74% / 0.16), transparent 22%),
    radial-gradient(circle at 85% 12%, hsl(191 90% 76% / 0.12), transparent 18%),
    radial-gradient(circle at 50% 100%, hsl(43 100% 63% / 0.08), transparent 24%), hsl(258 38% 10%);
}

[data-theme='candy-dusk'] .bg-card {
  background: linear-gradient(160deg, hsl(258 30% 16%), hsl(248 28% 18%));
  box-shadow: inset 0 1px 0 hsl(302 50% 96% / 0.04);
}

[data-theme='candy-dusk'] .bg-popover {
  background: linear-gradient(160deg, hsl(258 30% 17%), hsl(248 28% 19%));
}

[data-theme='candy-dusk'] .bg-msg-outgoing {
  background: linear-gradient(135deg, hsl(307 34% 21%), hsl(325 28% 24%));
  border-left: 2px solid hsl(325 100% 74% / 0.55);
}

[data-theme='candy-dusk'] .bg-msg-incoming {
  background: linear-gradient(135deg, hsl(250 24% 18%), hsl(258 20% 20%));
  border-left: 2px solid hsl(191 90% 76% / 0.38);
}

[data-theme='candy-dusk'] .bg-primary {
  background: linear-gradient(135deg, hsl(325 100% 74%), hsl(289 84% 74%));
}

[data-theme='candy-dusk'] button {
  border-radius: 999px;
  transition:
    transform 0.12s ease,
    filter 0.2s ease,
    background-color 0.15s ease,
    color 0.15s ease;
}

[data-theme='candy-dusk'] button:hover {
  filter: drop-shadow(0 0 10px hsl(325 100% 74% / 0.22))
    drop-shadow(0 0 18px hsl(191 90% 76% / 0.08));
}

[data-theme='candy-dusk'] button:active {
  transform: scale(0.98);
}

[data-theme='candy-dusk'] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, hsl(325 48% 44%), hsl(256 46% 42%));
}

[data-theme='candy-dusk'] ::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, hsl(325 66% 58%), hsl(191 58% 56%));
}

/* ── Paper Grove ("Field Notes") ──────────────────────────── */
:root[data-theme='paper-grove'] {
  --background: 41 43% 93%;
  --foreground: 148 16% 18%;
  --card: 43 52% 97%;
  --card-foreground: 148 16% 18%;
  --popover: 43 52% 98%;
  --popover-foreground: 148 16% 18%;
  --primary: 157 54% 40%;
  --primary-foreground: 45 60% 98%;
  --secondary: 42 26% 87%;
  --secondary-foreground: 148 14% 26%;
  --muted: 42 22% 89%;
  --muted-foreground: 148 10% 44%;
  --accent: 36 42% 83%;
  --accent-foreground: 148 16% 18%;
  --destructive: 12 76% 58%;
  --destructive-foreground: 0 0% 100%;
  --border: 38 22% 76%;
  --input: 38 22% 76%;
  --ring: 157 54% 40%;
  --radius: 0.9rem;
  --msg-outgoing: 151 32% 90%;
  --msg-incoming: 40 30% 94%;
  --status-connected: 157 54% 38%;
  --status-disconnected: 148 8% 58%;
  --warning: 39 92% 46%;
  --warning-foreground: 39 100% 12%;
  --success: 157 54% 34%;
  --success-foreground: 45 60% 98%;
  --info: 227 78% 64%;
  --info-foreground: 228 40% 20%;
  --region-override: 273 56% 44%;
  --favorite: 43 92% 48%;
  --console: 157 54% 34%;
  --console-command: 224 48% 42%;
  --console-bg: 45 24% 89%;
  --toast-error: 8 52% 94%;
  --toast-error-foreground: 9 58% 40%;
  --toast-error-border: 10 34% 78%;
  --code-editor-bg: 42 30% 90%;
  --font-sans: 'Avenir Next', 'Segoe UI', sans-serif;
  --scrollbar: 36 18% 68%;
  --scrollbar-hover: 36 22% 58%;
  --overlay: 148 20% 12%;
}

[data-theme='paper-grove'] body {
  background:
    linear-gradient(hsl(157 20% 50% / 0.04) 1px, transparent 1px),
    linear-gradient(90deg, hsl(157 20% 50% / 0.04) 1px, transparent 1px), hsl(41 43% 93%);
  background-size:
    32px 32px,
    32px 32px,
    auto;
}

[data-theme='paper-grove'] .bg-card {
  background: linear-gradient(180deg, hsl(43 52% 98%), hsl(40 42% 95%));
  box-shadow:
    0 1px 0 hsl(0 0% 100% / 0.8),
    0 8px 22px hsl(148 18% 20% / 0.06);
}

[data-theme='paper-grove'] .bg-popover {
  background: linear-gradient(180deg, hsl(43 52% 98%), hsl(40 38% 96%));
}

[data-theme='paper-grove'] .bg-msg-outgoing {
  background: linear-gradient(135deg, hsl(151 34% 90%), hsl(157 30% 87%));
  border-left: 2px solid hsl(157 54% 40% / 0.45);
}

[data-theme='paper-grove'] .bg-msg-incoming {
  background: linear-gradient(135deg, hsl(40 30% 95%), hsl(38 26% 92%));
  border-left: 2px solid hsl(227 78% 64% / 0.28);
}

[data-theme='paper-grove'] .bg-primary {
  background: linear-gradient(135deg, hsl(157 54% 40%), hsl(180 42% 42%));
}

[data-theme='paper-grove'] button {
  box-shadow: 0 1px 0 hsl(0 0% 100% / 0.7);
  transition:
    transform 0.12s ease,
    box-shadow 0.18s ease,
    background-color 0.15s ease,
    color 0.15s ease;
}

[data-theme='paper-grove'] button:hover {
  transform: translateY(-1px);
  box-shadow:
    0 1px 0 hsl(0 0% 100% / 0.8),
    0 6px 14px hsl(148 20% 20% / 0.08);
}

[data-theme='paper-grove'] button:active {
  transform: translateY(0);
}

[data-theme='paper-grove'] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, hsl(157 26% 54%), hsl(227 26% 60%));
}

[data-theme='paper-grove'] ::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, hsl(157 34% 46%), hsl(227 34% 52%));
}

/* ── Monochrome ("Workbench") ─────────────────────────────── */
:root[data-theme='monochrome'] {
  --background: 0 0% 98%;
  --foreground: 0 0% 8%;
  --card: 0 0% 100%;
  --card-foreground: 0 0% 8%;
  --popover: 0 0% 100%;
  --popover-foreground: 0 0% 8%;
  --primary: 0 0% 10%;
  --primary-foreground: 0 0% 98%;
  --secondary: 0 0% 96%;
  --secondary-foreground: 0 0% 10%;
  --muted: 0 0% 97%;
  --muted-foreground: 0 0% 18%;
  --accent: 0 0% 94%;
  --accent-foreground: 0 0% 8%;
  --destructive: 0 0% 18%;
  --destructive-foreground: 0 0% 98%;
  --border: 0 0% 72%;
  --input: 0 0% 72%;
  --ring: 0 0% 10%;
  --radius: 0.2rem;
  --msg-outgoing: 0 0% 92%;
  --msg-incoming: 0 0% 98%;
  --status-connected: 0 0% 12%;
  --status-disconnected: 0 0% 24%;
  --warning: 0 0% 22%;
  --warning-foreground: 0 0% 98%;
  --success: 0 0% 12%;
  --success-foreground: 0 0% 98%;
  --info: 0 0% 18%;
  --info-foreground: 0 0% 98%;
  --region-override: 0 0% 14%;
  --favorite: 0 0% 10%;
  --console: 0 0% 18%;
  --console-command: 0 0% 8%;
  --console-bg: 0 0% 96%;
  --toast-error: 0 0% 96%;
  --toast-error-foreground: 0 0% 12%;
  --toast-error-border: 0 0% 70%;
  --code-editor-bg: 0 0% 96%;
  --font-sans: 'Inter', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Cascadia Mono', 'SFMono-Regular', monospace;
  --scrollbar: 0 0% 18%;
  --scrollbar-hover: 0 0% 8%;
  --overlay: 0 0% 6%;
}

[data-theme='monochrome'] body {
  background: hsl(0 0% 98%);
}

[data-theme='monochrome'] .bg-card,
[data-theme='monochrome'] .bg-popover {
  background: hsl(0 0% 100%);
}

[data-theme='monochrome'] .bg-msg-outgoing {
  background: hsl(0 0% 92%);
  border-left: 2px solid hsl(0 0% 12% / 0.9);
}

[data-theme='monochrome'] .bg-msg-incoming {
  background: hsl(0 0% 98%);
  border-left: 2px solid hsl(0 0% 12% / 0.35);
}

[data-theme='monochrome'] .bg-primary {
  background: hsl(0 0% 10%);
}

[data-theme='monochrome'] button {
  border-radius: 0.2rem;
  box-shadow: none;
  filter: none;
  transition:
    background-color 0.12s ease,
    color 0.12s ease,
    border-color 0.12s ease;
}

[data-theme='monochrome'] button:hover {
  transform: none;
  box-shadow: none;
  filter: none;
}

[data-theme='monochrome'] button:active {
  transform: none;
}

[data-theme='monochrome'] ::-webkit-scrollbar-thumb {
  background: hsl(0 0% 18%);
}

[data-theme='monochrome'] ::-webkit-scrollbar-thumb:hover {
  background: hsl(0 0% 8%);
}