/* =========================================================================
   HushhVoice — Modern UI System (Dark | Purple)
   Mobile-first, component-organized CSS (no horizontal scroll)
   ======================================================================== */

/* -------------------------------------------------------------------------
   0) Design Tokens & Theme + Tunable Size Variables
   ------------------------------------------------------------------------- */
:root {
  /* ---- Core palette ---- */
  --bg: #07080d;
  /* Canvas */
  --bg-elev: #0c0f1b;
  /* Raised surfaces */
  --panel: #0e1220;
  --text: #ecf1fb;
  --muted: #a4afbf;
  --muted-2: #7f8aa0;

  /* Brand */
  --accent: #8b5cf6;
  /* purple core */
  --accent-2: #22d3ee;
  /* cyan focus */
  --accent-3: #a78bfa;
  /* light purple */

  /* States */
  --danger: #ef4444;
  --danger-weak: rgba(239, 68, 68, 0.16);
  --success: #22c55e;
  --warning: #f59e0b;

  /* Surfaces & borders */
  --bubble-user: #141a2b;
  --bubble-bot: #0f1628;
  --border: #1b2435;
  --border-2: #2a3550;
  --border-3: #334061;

  /* Shadows / ring */
  --shadow-1: 0 8px 28px rgba(0, 0, 0, 0.35);
  --shadow-2: 0 4px 16px rgba(0, 0, 0, 0.45);
  --glow-soft: 0 8px 24px rgba(139, 92, 246, 0.22);
  --ring: 0 0 0 2px rgba(34, 211, 238, 0.42);

  /* Radii */
  --radius-xs: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  /* Spacing (4pt grid) */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 20px;
  --s-6: 24px;
  --s-7: 28px;
  --s-8: 32px;
  --s-10: 40px;
  --s-12: 48px;

  /* ---- Typography (desktop defaults) ---- */
  --font: 14px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Inter, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --fs-xs: 12px;
  --fs-sm: 13px;
  --fs-base: 14px;
  /* DESKTOP base text size */
  --fs-md: 15px;
  --fs-lg: 17px;
  --fs-xl: 22px;
  --fs-2xl: clamp(22px, 3.2vw, 40px);

  /* ---- Input sizes (desktop defaults) ---- */
  --input-min-h: 44px;
  /* DESKTOP input min-height */
  --input-padding-y: 12px;
  /* DESKTOP input vertical padding */
  --input-padding-x: 14px;
  /* DESKTOP input horizontal padding */
  --fs-input: 15px;
  /* DESKTOP input font size */

  /* ---- Layout sizing ---- */
  --maxw: 880px;
  /* chat column max width */
  --container: min(100%, calc(var(--maxw) + 32px));

  /* Motion */
  --ease-std: cubic-bezier(.22, .61, .36, 1);
  --t-fast: .12s;
  --t-med: .2s;
  --t-slow: .32s;

  /* ---- MOBILE overrides (tune these for phones) ---- */
  --m-fs-base: 15.5px;
  /* MOBILE base text size (≥ 15px) */
  --m-fs-input: 16.5px;
  /* MOBILE input font (≥ 16px to avoid iOS zoom) */
  --m-input-min-h: 48px;
  /* MOBILE input min-height */
  --m-input-pad-y: 13px;
  /* MOBILE input vertical padding */
  --m-input-pad-x: 14px;
  /* MOBILE input horizontal padding */
  --m-composer-pad-y: 12px;
  /* MOBILE composer vertical padding */
}

/* Light theme token overrides */
body.light {
  --bg: #fbfbfe;
  --bg-elev: #ffffff;
  --panel: #ffffff;
  --text: #0e1320;
  --muted: #55637a;
  --bubble-user: #f2f4ff;
  --bubble-bot: #f7f8ff;
  --border: #e6e9f3;
  --border-2: #d9def0;
  --border-3: #cfd6ea;
}

/* -------------------------------------------------------------------------
     1) Global Reset & Base (mobile-first defaults) — NO HORIZONTAL SCROLL
     ------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  font: var(--font);
  font-size: var(--m-fs-base);
  /* MOBILE base size */
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 70% -10%, #151a33 0%, transparent 40%) fixed,
    radial-gradient(900px 500px at 10% 110%, rgba(139, 92, 246, .22) 0%, transparent 45%) fixed,
    var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

/* Media should never exceed viewport width */
img,
svg,
video,
canvas,
iframe {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Selection */
::selection {
  background: rgba(139, 92, 246, 0.35);
  color: #fff;
}

kbd {
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid #2a3342;
  background: #0f1420;
  color: #c8d2e0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: var(--fs-xs);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}

/* -------------------------------------------------------------------------
     2) Utilities & Accessibility
     ------------------------------------------------------------------------- */
.visually-hidden {
  position: absolute !important;
  inset: 0 0 auto 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
  border: 0;
  padding: 0;
  margin: -1px;
}

.u-invisible {
  visibility: hidden;
}

.u-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-2);
  transition: transform var(--t-med) var(--ease-std), border-color var(--t-med) var(--ease-std), background var(--t-med) var(--ease-std);
  max-width: 100%;
  overflow-x: hidden;
}

.u-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-3);
}

.u-focus-within:focus-within {
  box-shadow: var(--ring);
}

/* Scrollbars (webkit) */
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

*::-webkit-scrollbar-thumb {
  background: #1b2333;
  border-radius: var(--radius-pill);
}

*::-webkit-scrollbar-track {
  background: transparent;
}

/* -------------------------------------------------------------------------
     3) App Shell & Layout (cap to viewport width)
     ------------------------------------------------------------------------- */
.app,
.app-layout,
.topbar,
.chat,
.composer {
  max-width: 100vw;
  overflow-x: hidden;
}

.app {
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.app-layout {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1fr;
}

/* -------------------------------------------------------------------------
     4) Topbar (Header)
     ------------------------------------------------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-2) var(--s-3);
  /* MOBILE compact */
  background: linear-gradient(180deg, rgba(7, 8, 13, .88), rgba(7, 8, 13, .64)), var(--bg-elev);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px) saturate(1.15);
}

#sidebar-toggle.btn.icon {
  justify-self: start;
}

.topbar .brand {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  justify-self: center;
  max-width: 100%;
  text-decoration: none;
}

.topbar .logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  /* MOBILE size */
  object-fit: cover;
  border: 1px solid #26203a;
  box-shadow: 0 6px 24px rgba(139, 92, 246, 0.32), 0 2px 10px rgba(0, 0, 0, 0.35);
  transform: translateZ(0);
  transition: transform var(--t-med) var(--ease-std), box-shadow var(--t-med) var(--ease-std), filter var(--t-med) var(--ease-std);
}

.brand:hover .logo {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 12px 36px rgba(139, 92, 246, 0.38), 0 6px 18px rgba(0, 0, 0, 0.4);
}

.brand-text {
  display: grid;
  line-height: 1.06;
  gap: 2px;
  min-width: 0;
}

.app-title {
  margin: 0;
  font-weight: 850;
  letter-spacing: .2px;

  /* Responsive font size (scales with screen width, but never too small/big) */
  font-size: clamp(1.25rem, 5vw, 2.25rem);

  /* Gradient text */
  background: linear-gradient(90deg,
      #c7b7ff 0%,
      #a78bfa 35%,
      #8b5cf6 60%,
      #22d3ee 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;

  /* Subtle glow */
  text-shadow: 0 0.5rem 2rem rgba(139, 92, 246, .18);

  /* Prevent overflow issues */
  max-width: 100%;
  white-space: nowrap;
  /* keep title in one line */
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
}


.app-sub {
  display: none;
  color: var(--muted);
  font-size: clamp(11px, 1.3vw, 13px);
}

.auth {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: var(--s-3);
  max-width: 100%;
}

.google-login>div {
  transform: scale(.92);
  transform-origin: right center;
}

body.light .topbar {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.72)), var(--bg-elev);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px) saturate(1.05);
}

/* -------------------------------------------------------------------------
     5) Sidebar (Off-canvas on mobile; pinned on desktop via media query)
     ------------------------------------------------------------------------- */

.sidebar {
  display: grid;
  grid-template-rows: auto 1fr auto;
  /* header | content | footer */
  height: 100%;
}

.app-layout .sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: min(86vw, 300px);
  /* clamp width to viewport on phones */
  max-width: 100vw;
  background: linear-gradient(180deg, rgba(12, 14, 26, .94), rgba(10, 12, 22, .92)), var(--bg-elev);
  border-right: 1px solid var(--border);
  box-shadow: 0 24px 70px rgba(0, 0, 0, .45);
  transform: translateX(-100%);
  transition: transform var(--t-slow) var(--ease-std);
  z-index: 70;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 0;
  padding: var(--s-3);
  will-change: transform;
  overflow-x: hidden;
}

.app-layout .sidebar.open {
  transform: translateX(0);
}

.app {
  position: relative;
  z-index: 10;
}


.sidebar-header {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 120px;
  text-align: center;
  padding: var(--s-1) var(--s-1) var(--s-3);
  border-bottom: 1px solid var(--border);
}

.profile-pic {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  object-fit: cover;
  border: 1px solid #1f2737;
  box-shadow: 0 6px 16px rgba(0, 0, 0, .35);
}

.profile-info {
  display: grid;
  align-content: center;
  gap: 2px;
  max-width: 100%;
}

.profile-info .profile-name {
  margin: 0;
  font-size: var(--fs-md);
  font-weight: 800;
}

.profile-info .profile-subtitle {
  margin: 2px 0 0;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .2px;
  color: var(--muted);
  display: inline-flex;
  gap: 6px;
}

.profile-info .profile-subtitle::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, .12);
}

body.light .profile-info .profile-subtitle::before {
  box-shadow: 0 0 0 4px rgba(34, 211, 238, .18);
}

.profile-info .profile-bio {
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

.sidebar-content {
  display: grid;
  grid-auto-rows: max-content;
  gap: var(--s-3);
  padding: var(--s-3) var(--s-1);
  overflow: auto;
  padding-bottom: var(--s-4);
  max-width: 100%;
  overflow-x: hidden;
}

.sidebar-content .u-card {
  margin: 0;
}


.sidebar-footer-logo {
  display: block;
  width: 100px;
  max-width: 100%;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 4px;
  margin-left: 4px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, .4);
}

.sidebar-footer-logo:hover {
  transform: translateY(-1px) scale(1.05);
  box-shadow: 0 6px 20px rgba(139, 92, 246, .35);
  filter: brightness(1.06);
}

/* Sidebar footer stays pinned at bottom */
.sidebar-footer {
  margin-top: auto;
  /* pushes footer to the bottom of grid */
  padding: var(--s-3) var(--s-2);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
}

/* Small profile info in footer */
.profile-mini {
  display: flex;
  flex-direction: column;
  align-items: center;
  /* centre aligned */
  gap: 2px;
  width: 100%;
}

.profile-mini .profile-name {
  margin: 0;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--text);
}

.profile-mini .profile-subtitle {
  margin: 0;
  font-size: var(--fs-xs);
  color: var(--muted);
}

body.light .app-layout .sidebar {
  background: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(248, 249, 255, .94)), var(--bg-elev);
  border-right: 1px solid var(--border);
}

/* -------------------------------------------------------------------------
     6) Chat Column
     ------------------------------------------------------------------------- */
.chat {
  display: grid;
  place-items: start center;
  padding: var(--s-3) var(--s-2) calc(84px + env(safe-area-inset-bottom, 0px));
  /* MOBILE: safe area */
}

.chat-box {
  list-style: none;
  margin: 0;
  padding: 0 var(--s-4);
  width: 100%;
  max-width: var(--maxw);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  overflow-x: hidden;
}

/* -------------------------------------------------------------------------
     7) Messages
     ------------------------------------------------------------------------- */
.msg {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: var(--s-3);
  width: 100%;
}

.msg .avatar {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: #0e141c;
  border: 1px solid #1f2734;
  color: #a8b3c2;
  font-size: 16px;
}

.msg .bubble {
  border: 1px solid var(--border);
  background: var(--bubble-bot);
  border-radius: var(--radius);
  padding: 12px 14px;
  box-shadow: var(--shadow-1);
  position: relative;
  overflow: hidden;
  transition: border-color var(--t-med) var(--ease-std), background var(--t-med) var(--ease-std);
  max-width: 100%;
}

.msg.user .bubble {
  background: var(--bubble-user);
  border: 1px solid #263146;
}

.msg .content {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-width: 100%;
}

.msg.bot .content a {
  color: #93c5fd;
  text-decoration: none;
  border-bottom: 1px dashed rgba(147, 197, 253, .35);
  transition: border-color var(--t-med) var(--ease-std);
}

.msg.bot .content a:hover {
  border-bottom-color: rgba(147, 197, 253, .75);
}

/* Typing */
.msg.bot.typing .bubble {
  display: inline-flex;
  align-items: center;
}

.dots {
  display: inline-flex;
  gap: 6px;
}

.dots i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
  background: #a7b0be;
  opacity: .6;
  transform: translateY(0);
  animation: dot 1.2s infinite ease-in-out;
}

.dots i:nth-child(2) {
  animation-delay: .15s;
}

.dots i:nth-child(3) {
  animation-delay: .3s;
}

@keyframes dot {

  0%,
  80%,
  100% {
    transform: translateY(0);
    opacity: .6;
  }

  40% {
    transform: translateY(-4px);
    opacity: 1;
  }
}

/* Bubble accents */
.msg.user .bubble {
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.06), rgba(139, 92, 246, 0)), var(--bubble-user);
}

.msg.bot .bubble {
  border: 1px solid #202a3a;
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.05), rgba(34, 211, 238, 0)), var(--bubble-bot);
}

/* Light theme bubbles */
body.light .msg.user .bubble {
  border: 1px solid #dfe5fb;
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.06), rgba(139, 92, 246, 0)), var(--bubble-user);
}

body.light .msg.bot .bubble {
  border: 1px solid #e6e9f6;
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.05), rgba(34, 211, 238, 0)), var(--bubble-bot);
}

/* Actions under assistant response */
.msg .msg-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.msg.bot .bubble .msg-actions {
  border-top: 1px solid rgba(127, 136, 160, 0.18);
  padding-top: 10px;
  margin-top: 12px;
}

.btn.tiny {
  font-size: 12px;
  line-height: 1;
  padding: 6px 10px;
  border-radius: 8px;
  opacity: .95;
}

.btn.tiny:hover {
  opacity: 1;
}

.speak-btn.btn.tiny {
  background: linear-gradient(180deg, #0f1726, #0c1426);
  border-color: var(--border-2);
  color: var(--text);
}

.speak-btn.btn.tiny:hover {
  background: #141c30;
  border-color: var(--border-3);
}

.msg .msg-actions .btn.tiny:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.speak-btn.is-speaking {
  background: linear-gradient(180deg, rgba(239, 68, 68, .16), rgba(239, 68, 68, .08));
  border-color: var(--danger);
  color: #ffd7d7;
}

/* -------------------------------------------------------------------------
     8) Composer (Input bar) — MOBILE-FIRST bigger input & font
     ------------------------------------------------------------------------- */
.composer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, rgba(7, 8, 13, 0), rgba(7, 8, 13, .94) 28%);
  border-top: 1px solid #121821;
  padding: var(--m-composer-pad-y) clamp(10px, 3vw, 16px) calc(10px + env(safe-area-inset-bottom, 0px));
}

.composer-inner {
  width: min(100%, var(--container));
  display: grid;
  gap: var(--s-3);
}

.attachment-bar {
  border: 1px dashed var(--border-2);
  border-radius: 12px;
  padding: 8px 10px;
  color: var(--muted);
  background: #0f1520;
  display: none;
  max-width: 100%;
  overflow-x: hidden;
}

.input-row {
  display: grid;
  align-items: center;
  gap: var(--s-2);
  grid-template-columns: auto 1fr auto;
  /* tools | text | send */
  width: 100%;
  max-width: 100%;
}

/* Buttons (shared) */
.btn {
  appearance: none;
  border: 1px solid var(--border-2);
  background: linear-gradient(180deg, #0f1726, #0c1426);
  color: var(--text);
  border-radius: 12px;
  padding: 8px 12px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: border-color var(--t-med) var(--ease-std), background var(--t-med) var(--ease-std), transform var(--t-fast) var(--ease-std), box-shadow var(--t-med) var(--ease-std), color var(--t-med) var(--ease-std);
  will-change: transform;
  max-width: 100%;
}

.btn:hover {
  border-color: var(--border-3);
  background: #141c30;
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.btn.small {
  padding: 6px 10px;
  font-size: var(--fs-sm);
}

.btn-ghost {
  background: transparent;
  border-color: #2b3650;
  color: #d3dded;
}

.btn.primary {
  background: linear-gradient(180deg, var(--accent), #6d28d9);
  border: 1px solid #7c3aed;
  color: #fff;
  box-shadow: var(--glow-soft);
}

.btn.primary:hover {
  filter: brightness(1.05);
}

.btn.icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 18px;
}

.btn.icon.mic.recording {
  background: rgba(139, 92, 246, 0.16);
  border-color: transparent;
  color: #f3eaff;
  box-shadow: inset 0 0 0 2px rgba(139, 92, 246, .22);
}

.btn.icon.stop {
  background: var(--danger-weak);
  border-color: var(--danger);
  color: #fecaca;
  display: none;
}

body.is-speaking .btn.icon.stop {
  display: grid;
}

body.light .btn.primary {
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.18);
}

/* INPUT — bigger on mobile */
.input {
  min-height: var(--m-input-min-h);
  resize: none;
  max-height: 220px;
  border: 1px solid var(--border-2);
  border-radius: 12px;
  background: var(--panel);
  color: var(--text);
  padding: var(--m-input-pad-y) var(--m-input-pad-x);
  outline: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
  font-size: var(--m-fs-input);
  transition: box-shadow var(--t-med) var(--ease-std), border-color var(--t-med) var(--ease-std), background var(--t-med) var(--ease-std);
  width: 100%;
}

.input:focus {
  border-color: #3b4661;
  box-shadow: var(--ring), inset 0 1px 0 rgba(255, 255, 255, .02);
}

/* Send button sizing on phones */
.btn.primary.send {
  height: 42px;
  min-width: 56px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  padding: 0 clamp(10px, 3.6vw, 16px);
  font-weight: 700;
  letter-spacing: .2px;
}

/* Tooltray */
.tooltray {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(13, 18, 32, .6), rgba(10, 14, 26, .55));
  border: 1px solid var(--border-2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .02);
  max-width: 100%;
}

.tooltray .btn.icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border-color: transparent;
  background: transparent;
  color: var(--muted);
  box-shadow: none;
  transition: color var(--t-med) var(--ease-std), background var(--t-med) var(--ease-std);
}

.tooltray .btn.icon:hover {
  background: rgba(139, 92, 246, .10);
  color: #e9e9ff;
}

/* Composer hints */
.hints {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: var(--fs-xs);
}

/* Attachments (chips) */
.attachment-bar {
  display: none;
  align-items: center;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px 6px 6px;
  border: 1px solid var(--border-2);
  background: linear-gradient(180deg, #0d1426, #0b1120);
  border-radius: 12px;
  box-shadow: var(--shadow-2);
  max-width: 100%;
}

.chip-thumb {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.chip .btn.remove-attach {
  border-color: transparent;
  background: transparent;
  color: var(--muted);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  padding: 0;
}

.chip .btn.remove-attach:hover {
  background: rgba(239, 68, 68, .12);
  color: #fecaca;
}

/* -------------------------------------------------------------------------
     9) Toasts & Generic Modal
     ------------------------------------------------------------------------- */
.toasts {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 60;
  display: grid;
  gap: 10px;
  width: min(360px, 92vw);
  max-width: 100vw;
  overflow-x: hidden;
}

.toast {
  border: 1px solid #283246;
  background: linear-gradient(180deg, rgba(20, 27, 48, .92), rgba(15, 20, 32, .92));
  color: #cfdae8;
  border-radius: 12px;
  padding: 10px 12px;
  box-shadow: var(--shadow-2);
  transform: translateY(-4px);
  opacity: 0;
  animation: toastIn .28s var(--ease-std) forwards;
}

@keyframes toastIn {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal {
  border: 1px solid #2a3446;
  border-radius: 16px;
  background: radial-gradient(800px 300px at 50% -10%, rgba(139, 92, 246, 0.12), transparent 45%), #0f141c;
  color: var(--text);
  padding: 18px 16px;
  width: min(520px, 96vw);
  box-shadow: var(--shadow-1);
  max-width: 96vw;
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.modal h3 {
  margin: 0 0 6px;
  font-size: var(--fs-md);
}

.modal p {
  margin: 0 0 12px;
  color: var(--muted-2);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* -------------------------------------------------------------------------
     10) Settings Modal (Consent / About / RAG Memory)
     ------------------------------------------------------------------------- */
.settings-modal {
  max-width: min(720px, 96vw);
  padding: 0;
}

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 10px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(139, 92, 246, .10), rgba(139, 92, 246, 0));
  border-radius: 16px 16px 0 0;
}

.settings-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.settings-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-2);
  border-radius: 10px;
  background: #0c121a;
}

.settings-title {
  margin: 0;
  font-size: var(--fs-lg);
  font-weight: 800;
  letter-spacing: .2px;
}

.settings-sub {
  margin: 2px 0 0;
  color: var(--muted-2);
  font-size: var(--fs-xs);
}

.settings-panel {
  padding: 14px 16px 16px;
  display: grid;
  gap: 16px;
}

.pane {
  display: grid;
  gap: 12px;
}

.pane-head {
  display: grid;
  gap: 4px;
}

.pane-divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 4px 0;
}

.settings-actions {
  border-top: 1px solid var(--border);
  padding: 10px 16px 14px;
}

.consent-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .consent-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.consent-card {
  --hover-bg: linear-gradient(180deg, rgba(139, 92, 246, .10), rgba(139, 92, 246, 0));
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-elev);
  cursor: pointer;
  user-select: none;
  transition: border-color var(--t-med), transform var(--t-fast), background var(--t-med);
  max-width: 100%;
}

.consent-card:hover {
  border-color: var(--border-3);
  background: var(--hover-bg), var(--bg-elev);
  transform: translateY(-1px);
}

.consent-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.consent-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: #0c121a;
  border: 1px solid var(--border-2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .02);
}

.consent-title {
  font-weight: 800;
  letter-spacing: .2px;
}

.consent-desc {
  font-size: var(--fs-xs);
  color: var(--muted-2);
}

.switch-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.switch {
  --w: 50px;
  --h: 28px;
  --p: 3px;
  --dot: calc(var(--h) - var(--p)*2);
  position: relative;
  width: var(--w);
  height: var(--h);
  border-radius: 999px;
  border: 1px solid var(--border-2);
  background: linear-gradient(180deg, #0b1320, #0a121e);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .02);
  transition: background var(--t-med) var(--ease-std), border-color var(--t-med), box-shadow var(--t-med);
}

.switch::after {
  content: "";
  position: absolute;
  top: var(--p);
  left: var(--p);
  width: var(--dot);
  height: var(--dot);
  border-radius: 999px;
  background: #d4deea;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .35);
  transition: left var(--t-med) var(--ease-std), background var(--t-med), transform var(--t-med);
}

.switch-input:checked+.switch {
  background: linear-gradient(180deg, rgba(139, 92, 246, .42), rgba(109, 40, 217, .62));
  border-color: #7c3aed;
  box-shadow: var(--glow-soft);
}

.switch-input:checked+.switch::after {
  left: calc(var(--w) - var(--dot) - var(--p));
  background: #fff;
  transform: scale(1.02);
}

.consent-card:focus-within {
  box-shadow: var(--ring);
}

/* About + Memory preview styling */
.bio-preview,
.rag-memory {
  position: relative;
  display: grid;
  gap: var(--s-3);
  padding: var(--s-4);
  border-radius: var(--radius);
  transition: background var(--t-med) var(--ease-std), border-color var(--t-med) var(--ease-std), transform var(--t-fast) var(--ease-std), box-shadow var(--t-med) var(--ease-std);
  max-width: 100%;
}

.bio-preview::before,
.rag-memory::before {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  top: 8px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-3), var(--accent-2));
  opacity: .9;
  pointer-events: none;
}

.bio-preview:hover,
.rag-memory:hover {
  border-color: var(--border-3);
  transform: translateY(-1px);
}

/* Memory form + log */
.memory-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s-2);
  align-items: center;
}

.memory-form .field {
  width: 100%;
  border: 1px solid var(--border-2);
  border-radius: 12px;
  background: linear-gradient(180deg, var(--panel), #0b1020);
  color: var(--text);
  padding: 12px 14px;
  outline: none;
  transition: border-color var(--t-med) var(--ease-std), box-shadow var(--t-med) var(--ease-std), background var(--t-med) var(--ease-std);
  caret-color: var(--accent-2);
}

.memory-form .field::placeholder {
  color: var(--muted-2);
  opacity: .9;
  font-style: italic;
}

.memory-form .field:focus {
  border-color: #3b4661;
  box-shadow: var(--ring), inset 0 1px 0 rgba(255, 255, 255, .02);
}

@media (max-width: 420px) {
  .memory-form {
    grid-template-columns: 1fr;
  }

  #memory-add-btn {
    width: 100%;
  }
}

.memory-log-wrap {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: radial-gradient(100% 60% at 0% 0%, rgba(167, 139, 250, .07), transparent 60%),
    linear-gradient(180deg, rgba(34, 211, 238, .035), rgba(34, 211, 238, 0)), var(--bg-elev);
  padding: 10px;
  max-height: 280px;
  overflow: auto;
  overscroll-behavior: contain;
  scroll-behavior: smooth;
  box-shadow: var(--shadow-2);
  max-width: 100%;
  overflow-x: hidden;
}

.memory-log-wrap::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.memory-log-wrap::-webkit-scrollbar-thumb {
  background: #1b2333;
  border-radius: var(--radius-pill);
}

.memory-log {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.memory-log:empty::after {
  content: "No memories yet. Add your first one above.";
  display: block;
  text-align: center;
  color: var(--muted);
  padding: 18px 8px;
  font-size: var(--fs-sm);
}

/* -------------------------------------------------------------------------
     11) Chats Panel (threads list)
     ------------------------------------------------------------------------- */
#chats-panel {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  padding: .75rem;
  max-width: 100%;
  width: 100%;
  overflow-x: hidden;
  border-radius: .875rem;
}

#chats-panel .chats-head {
  display: grid;
  gap: .625rem;
}

#chats-panel .chats-new {
  width: 100%;
  text-align: left;
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .625rem .75rem;
  font-weight: 700;
  border-radius: .75rem;
}

#chats-panel .chats-search {
  width: 100%;
}

#chats-panel .chats-search-input {
  width: 100%;
  border-radius: .75rem;
  padding: .625rem .75rem;
  background: linear-gradient(180deg, var(--panel), #0a1119);
}

#chats-panel .chats-list-wrap {
  position: relative;
  flex: 1 1 auto;
  min-height: 11.25rem;
  border: .0625rem solid var(--border);
  border-radius: .75rem;
  background: var(--bg-elev);
  overflow: auto;
  padding: .5rem;
  box-shadow: var(--shadow-2);
  max-width: 100%;
}

#chats-panel .threads-empty {
  text-align: left;
  color: var(--muted);
  padding: .75rem;
  font-size: .875rem;
  border: 1px dashed var(--border-2);
  border-radius: .625rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, .02), rgba(255, 255, 255, .01));
}

#chats-panel .threads-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .5rem;
  justify-items: stretch;
  max-width: 100%;
}

#chats-panel .thread {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto auto;
  gap: .5rem;
  position: relative;
  border: .0625rem solid var(--border);
  border-radius: .75rem;
  background: #0a0f16;
  transition: border-color var(--t-med), background var(--t-med), transform var(--t-fast);
  max-width: 100%;
  padding: 0;
  overflow: hidden;
}

#chats-panel .thread:hover {
  border-color: var(--border-3);
  background: #0c131c;
  transform: translateY(-.025rem);
}

#chats-panel .thread::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: .18rem;
  border-radius: .75rem 0 0 .75rem;
  background: linear-gradient(180deg, var(--accent-3), var(--accent));
  opacity: .45;
}

#chats-panel .thread[data-selected="true"] {
  border-color: #7c3aed;
  background: linear-gradient(180deg, rgba(139, 92, 246, .10), rgba(139, 92, 246, 0)), #0a0f16;
  box-shadow: inset 0 0 0 .0625rem rgba(124, 58, 237, .35);
}

#chats-panel .thread-main {
  width: 100%;
  padding: .55rem .75rem .15rem .75rem;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: var(--text);
  border-radius: .75rem;
}

#chats-panel .thread-top {
  display: block;
  min-width: 0;
}

#chats-panel .thread-title {
  display: block;
  font-weight: 700;
  letter-spacing: .01em;
  font-size: .92rem;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#chats-panel .thread-time,
#chats-panel .thread-snippet {
  display: none !important;
}

#chats-panel .thread-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  align-items: center;
  justify-content: flex-start;
  padding: .2rem .75rem .6rem .75rem;
  max-width: 100%;
  overflow-x: hidden;
}

#chats-panel .btn.action {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .38rem .6rem;
  border-radius: .6rem;
  border: 1px solid var(--border-2);
  background: linear-gradient(180deg, #0b1320, #0a121e);
  color: var(--text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .02);
  transition: background var(--t-med), border-color var(--t-med), transform var(--t-fast), box-shadow var(--t-med);
  max-width: 100%;
}

#chats-panel .btn.action:hover {
  background: #0e1626;
  border-color: var(--border-3);
  transform: translateY(-.025rem);
}

#chats-panel .btn.action:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

#chats-panel .btn.action svg {
  width: 1rem;
  height: 1rem;
  opacity: .95;
}

#chats-panel .btn.action.danger {
  border-color: rgba(239, 68, 68, .35);
  color: #ffd7d7;
  background: linear-gradient(180deg, rgba(239, 68, 68, .10), rgba(239, 68, 68, .06));
}

#chats-panel .btn.action.danger:hover {
  background: linear-gradient(180deg, rgba(239, 68, 68, .16), rgba(239, 68, 68, .10));
  border-color: var(--danger);
}

@media (max-width: 40rem) {
  #chats-panel .btn.action {
    padding: .35rem;
    width: 1.9rem;
    height: 1.9rem;
    justify-content: center;
  }

  #chats-panel .btn.action .action-label {
    display: none;
  }

  #chats-panel .btn.action svg {
    width: 1rem;
    height: 1rem;
  }

  #chats-panel .thread-actions {
    gap: .32rem;
  }
}

/* Ensure dialog displays if browser lacks native styling */
dialog[open] {
  display: block;
}

/* -------------------------------------------------------------------------
     12) Background Art (Ambient) — fixed layers constrained to viewport
     ------------------------------------------------------------------------- */
.bg-anim,
.bg-stars,
.bg-logo {
  max-width: 100vw;
  overflow-x: hidden;
}

.bg-anim {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(1200px 600px at 70% -10%, rgba(139, 92, 246, .12) 0%, transparent 40%) fixed,
    radial-gradient(900px 500px at 10% 110%, rgba(139, 92, 246, 0.20) 0%, transparent 45%) fixed,
    var(--bg);
  animation: hueFloat 24s ease-in-out infinite alternate;
}

.bg-anim::before {
  content: "";
  position: absolute;
  inset: -15%;
  background: radial-gradient(40% 40% at 60% 40%, rgba(167, 139, 250, 0.24), transparent 55%),
    radial-gradient(35% 35% at 30% 65%, rgba(34, 211, 238, 0.16), transparent 60%),
    conic-gradient(from 0deg at 50% 50%, rgba(139, 92, 246, 0.18), rgba(139, 92, 246, 0.05), rgba(34, 211, 238, 0.12), rgba(139, 92, 246, 0.18));
  filter: blur(100px) saturate(1.05);
  opacity: .16;
  mix-blend-mode: screen;
  animation: nebulaSpin 60s linear infinite;
}

@keyframes hueFloat {
  0% {
    filter: hue-rotate(0deg) saturate(1);
    transform: translate3d(0, 0, 0);
  }

  100% {
    filter: hue-rotate(-12deg) saturate(1.1);
    transform: translate3d(0, -4px, 0);
  }
}

@keyframes nebulaSpin {
  from {
    transform: rotate(0deg) scale(1);
  }

  to {
    transform: rotate(360deg) scale(1);
  }
}

.bg-logo {
  position: fixed;
  left: 50%;
  top: 48%;
  transform: translate(-50%, -50%) scale(1);
  width: min(78vw, 420px);
  opacity: 0.11;
  z-index: 1;
  pointer-events: none;
  filter: drop-shadow(0 40px 120px rgba(139, 92, 246, .35)) drop-shadow(0 8px 40px rgba(139, 92, 246, .28)) saturate(1.06) blur(0.2px);
  mix-blend-mode: screen;
  animation: logoGlow 6.5s ease-in-out infinite;
}

@keyframes logoGlow {
  0% {
    opacity: .11;
    filter: drop-shadow(0 40px 120px rgba(139, 92, 246, .28)) drop-shadow(0 8px 40px rgba(139, 92, 246, .24)) saturate(1.02) blur(0.2px);
  }

  50% {
    opacity: .18;
    filter: drop-shadow(0 50px 150px rgba(139, 92, 246, .40)) drop-shadow(0 10px 60px rgba(139, 92, 246, .34)) saturate(1.10) blur(0.3px);
  }

  100% {
    opacity: .12;
    filter: drop-shadow(0 40px 120px rgba(139, 92, 246, .32)) drop-shadow(0 8px 40px rgba(139, 92, 246, .26)) saturate(1.06) blur(0.2px);
  }
}

:root {
  --star-1: var(--accent-3, #a78bfa);
  --star-2: #c7b7ff;
  --meteor: var(--accent-3, #a78bfa);
  --space: rgba(0, 0, 0, 0);
}

.bg-stars {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(1200px 600px at 70% -10%, rgba(139, 92, 246, .08), transparent 45%) fixed,
    radial-gradient(900px 500px at 10% 110%, rgba(167, 139, 250, .10), transparent 50%) fixed;
}

.bg-stars .shooting-star {
  position: absolute;
  left: -160px;
  width: 140px;
  height: 2px;
  background: linear-gradient(90deg, var(--meteor), var(--space));
  transform: rotate(22deg);
  opacity: 0;
  filter: drop-shadow(0 0 6px rgba(167, 139, 250, .65));
  animation: shootSlow 9s ease-in infinite;
}

.bg-stars .shooting-star:nth-of-type(1) {
  top: 22%;
  animation-delay: 0s;
}

.bg-stars .shooting-star:nth-of-type(2) {
  top: 38%;
  animation-delay: 2.6s;
}

.bg-stars .shooting-star:nth-of-type(3) {
  top: 54%;
  animation-delay: 5.2s;
}

@keyframes shootSlow {
  0% {
    transform: translateX(0) translateY(0) rotate(22deg);
    opacity: 0;
  }

  3% {
    opacity: 1;
  }

  85% {
    opacity: .9;
  }

  100% {
    transform: translateX(120vw) translateY(50vh) rotate(22deg);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bg-stars .shooting-star {
    animation: none !important;
  }
}

/* -------------------------------------------------------------------------
     13) Links
     ------------------------------------------------------------------------- */
a {
  color: #93c5fd;
  text-decoration: none;
  position: relative;
  outline: none;
  max-width: 100%;
}

a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t-med) var(--ease-std), opacity var(--t-med) var(--ease-std);
  opacity: .6;
}

a:hover::after,
a:focus-visible::after {
  transform: scaleX(1);
  opacity: 1;
}

a:focus-visible {
  box-shadow: var(--ring);
  border-radius: 2px;
}

/* -------------------------------------------------------------------------
     14) Responsive Enhancements (progressive)
     ------------------------------------------------------------------------- */

/* >= 560px: slightly roomier chat */
@media (min-width: 560px) {
  .chat {
    padding: var(--s-4) 0 calc(100px + env(safe-area-inset-bottom, 0px));
  }
}

/* >= 620px: show subtitle, medium logo, desktop base size */
@media (min-width: 620px) {
  .app-sub {
    display: block;
  }

  .topbar .logo {
    width: 56px;
    height: 56px;
    border-radius: 12px;
  }

  body {
    font-size: var(--fs-base);
  }
}

/* >= 720px: larger send button and input spacing */
@media (min-width: 720px) {
  .input-row {
    gap: var(--s-3);
  }

  .btn.primary.send {
    min-width: 72px;
    height: 44px;
  }
}

/* >= 860px: widen chat max width */
@media (min-width: 860px) {
  :root {
    --maxw: 760px;
  }
}

/* >= 900px: standard desktop container width */
@media (min-width: 900px) {
  .composer-inner {
    width: var(--container);
  }

  .chat-box {
    max-width: var(--maxw);
  }
}

/* >= 1100px: Only adjust topbar padding and logo size, keep sidebar behavior consistent */
@media (min-width: 1100px) {
  .topbar {
    padding: var(--s-3) var(--s-4);
  }

  .topbar .logo {
    width: 68px;
    height: 68px;
    border-radius: 14px;
  }
}

/* Tiny phones: tighten a bit, keep inputs ≥ 42px & ≥16px font */
@media (max-width: 360px) {
  .btn.small {
    padding: 5px 8px;
  }

  .msg {
    grid-template-columns: 32px 1fr;
  }

  .msg .avatar {
    width: 32px;
    height: 32px;
  }
}