:root {
  color-scheme: dark;
  --bg: #050505;
  --panel: #0f0f10;
  --panel-2: #171719;
  --line: rgba(255, 255, 255, .12);
  --text: #f7f2ea;
  --muted: #aaa19a;
  --icon: #fff3e8;
  --accent: #ff6a00;
  --accent-2: #ff9a23;
  --chrome: #d8dde2;
  --green: #59d89a;
  --leaf: #8bd77c;
  --danger: #f56f5f;
  --shadow: 0 22px 70px rgba(0, 0, 0, .48);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; overflow: hidden; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 12%, rgba(255, 106, 0, .17), transparent 30%),
    linear-gradient(135deg, rgba(255, 255, 255, .035), transparent 28%),
    linear-gradient(180deg, rgba(255, 106, 0, .08), transparent 42%),
    var(--bg);
  color: var(--text);
}
button, input, textarea { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .55; }

.app-shell {
  display: grid;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  min-height: 100dvh;
  height: 100dvh;
  overflow: hidden;
  position: relative;
  transition: grid-template-columns .22s ease;
}
.app-shell.sidebar-collapsed {
  grid-template-columns: 0 minmax(0, 1fr);
}
.side-rail {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 18px;
  overflow: auto;
  min-width: 0;
  background:
    linear-gradient(180deg, rgba(21, 21, 23, .96), rgba(7, 7, 8, .96)),
    var(--panel);
  border-right: 1px solid var(--line);
  transition: opacity .18s ease, padding .22s ease, border-color .22s ease;
}
.app-shell.sidebar-collapsed .side-rail {
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
  padding-left: 0;
  padding-right: 0;
  border-right-color: transparent;
}
.sidebar-scrim {
  display: none;
}
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 54px;
}
.brand-lockup strong { display: block; font-size: 18px; }
.brand-lockup small { color: var(--muted); }
.spud-mark {
  width: 52px;
  height: 52px;
  border-radius: 999px;
  background:
    linear-gradient(145deg, rgba(255,255,255,.2), rgba(255,255,255,.03)),
    #080809;
  border: 1px solid rgba(255, 154, 35, .46);
  position: relative;
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.18),
    0 0 0 3px rgba(255,106,0,.08),
    0 0 24px rgba(255,106,0,.2),
    0 10px 24px rgba(0,0,0,.42);
  flex: 0 0 auto;
}
.spud-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.08);
}
.profile-panel, .link-panel {
  background:
    linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015)),
    color-mix(in srgb, var(--panel) 94%, transparent);
  border: 1px solid rgba(255, 255, 255, .11);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}
.profile-panel { display: grid; gap: 11px; }
label { display: grid; gap: 6px; color: var(--muted); font-size: 12px; }
.connection-note {
  margin: -3px 0 2px;
  border: 1px solid rgba(255, 106, 0, .32);
  border-radius: 7px;
  padding: 9px 10px;
  color: #ffd4aa;
  background: rgba(255, 106, 0, .09);
  font-size: 12px;
  line-height: 1.35;
}
input, textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 7px;
  background: #070708;
  color: var(--text);
  padding: 10px 11px;
  outline: none;
}
textarea { resize: vertical; min-height: 44px; }
input:focus, textarea:focus {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(255, 106, 0, .18), 0 0 22px rgba(255, 106, 0, .12);
}
.button-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.primary-btn, .ghost-btn, .danger-btn, .icon-btn {
  border: 1px solid transparent;
  border-radius: 7px;
  min-height: 38px;
  padding: 0 14px;
  color: var(--text);
  background: #171719;
}
.primary-btn {
  background: linear-gradient(180deg, #ff9a23, #ff6a00 58%, #b83e00);
  border-color: rgba(255, 180, 82, .8);
  color: #0d0906;
  font-weight: 800;
  box-shadow: 0 0 20px rgba(255, 106, 0, .18), inset 0 1px 0 rgba(255,255,255,.28);
}
.ghost-btn { border-color: rgba(255, 255, 255, .14); color: #ece6dc; }
.danger-btn { border-color: rgba(245,111,95,.5); color: #ffd3ce; }
.icon-btn {
  width: 40px;
  padding: 0;
  display: inline-grid;
  place-items: center;
  border-color: rgba(255, 255, 255, .14);
}
.icon-btn:disabled {
  opacity: .45;
  cursor: not-allowed;
}
.tts-toggle-btn.active {
  border-color: #ff9b39;
  background: linear-gradient(180deg, rgba(255, 138, 42, .3), rgba(185, 74, 23, .18));
  box-shadow: 0 0 18px rgba(255, 106, 0, .24);
}
.status-line { min-height: 18px; color: var(--muted); font-size: 12px; line-height: 1.35; }
.status-line.error { color: #ffafa6; }
.status-line.ok { color: #b5f0ce; }
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--muted);
  background: #080809;
  font-size: 12px;
}
.status-pill span {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #56585c;
}
.status-pill.online { color: #cff6dc; border-color: rgba(114,217,166,.45); }
.status-pill.online span { background: var(--green); box-shadow: 0 0 12px rgba(114,217,166,.7); }
.link-panel dl { display: grid; gap: 9px; margin: 14px 0; }
.link-panel dl div { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid rgba(255,255,255,.09); padding-bottom: 8px; }
dt { color: var(--muted); font-size: 12px; }
dd { margin: 0; text-align: right; font-size: 12px; color: var(--text); overflow-wrap: anywhere; }

.chat-main {
  min-width: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  height: 100dvh;
  min-height: 0;
  position: relative;
  background:
    linear-gradient(90deg, rgba(255, 106, 0, .05) 1px, transparent 1px) 0 0 / 44px 44px,
    linear-gradient(0deg, rgba(255, 255, 255, .035) 1px, transparent 1px) 0 0 / 44px 44px,
    radial-gradient(circle at 70% 12%, rgba(255, 106, 0, .08), transparent 30%),
    rgba(5, 5, 5, .58);
}
.chat-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255,255,255,.11);
  background: rgba(8,8,9,.78);
  backdrop-filter: blur(12px);
}
.chat-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.chat-title-row > div { min-width: 0; }
.sidebar-toggle {
  color: var(--text);
  background: linear-gradient(180deg, #1b1c1f, #09090a);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.12);
}
.sidebar-toggle-icon {
  width: 18px;
  height: 15px;
  display: block;
  position: relative;
  border: 2px solid currentColor;
  border-radius: 4px;
}
.sidebar-toggle-icon::before {
  content: "";
  position: absolute;
  top: -2px;
  bottom: -2px;
  left: 5px;
  width: 2px;
  background: currentColor;
  opacity: .9;
}
.sidebar-toggle-icon::after {
  content: "";
  position: absolute;
  width: 5px;
  height: 5px;
  top: 3px;
  right: -7px;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
  transform: rotate(45deg);
  opacity: .75;
  transition: transform .18s ease, right .18s ease, left .18s ease;
}
.app-shell.sidebar-collapsed .sidebar-toggle {
  border-color: rgba(255,143,42,.75);
  box-shadow: 0 0 24px rgba(255,106,0,.22), inset 0 1px 0 rgba(255,255,255,.1);
}
.app-shell.sidebar-collapsed .sidebar-toggle-icon::after {
  right: auto;
  left: -7px;
  transform: rotate(225deg);
}
h1 { margin: 0; font-size: 22px; letter-spacing: 0; }
.chat-topbar p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.message-list {
  overflow: auto;
  overflow-anchor: none;
  min-height: 0;
  padding: 24px clamp(14px, 3vw, 34px) 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.empty-state {
  margin: auto;
  width: min(760px, 100%);
  max-width: 760px;
  text-align: center;
  color: var(--muted);
  padding: clamp(18px, 4vw, 36px);
}
.empty-state-logo {
  display: block;
  width: min(560px, 86vw);
  max-height: min(32vh, 300px);
  object-fit: contain;
  margin: 0 auto clamp(16px, 3vw, 26px);
  filter: drop-shadow(0 22px 36px rgba(0,0,0,.44)) drop-shadow(0 0 34px rgba(255,106,0,.2));
}
.empty-state::after {
  content: none;
  display: none;
}
.empty-state strong { display: block; color: var(--text); font-size: clamp(24px, 4vw, 34px); margin-bottom: 8px; letter-spacing: 0; }
.message {
  display: grid;
  max-width: min(820px, 94%);
  gap: 7px;
  overflow-anchor: none;
  animation: message-rise .28s cubic-bezier(.2, .9, .24, 1) both;
  transform-origin: left bottom;
}
.message.user { align-self: end; justify-items: end; transform-origin: right bottom; }
.message.assistant, .message.system { align-self: start; }
.message-meta { font-size: 11px; color: var(--muted); }
.bubble {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.018)),
    #101012;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.45;
  box-shadow: 0 10px 26px rgba(0,0,0,.16);
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.message.assistant .bubble {
  border-color: rgba(255,106,0,.32);
}
.message.assistant:not(.typing-message) .bubble {
  animation: assistant-warmth .5s ease both;
}
.message.user .bubble {
  background:
    linear-gradient(180deg, rgba(31, 32, 35, .98), rgba(13, 13, 15, .98));
  color: #f4f0e8;
  border-color: rgba(255,255,255,.16);
  font-weight: 600;
  box-shadow:
    inset 3px 0 0 rgba(255,106,0,.78),
    inset 0 1px 0 rgba(255,255,255,.06),
    0 10px 24px rgba(0,0,0,.18);
}
.message.system .bubble { color: #cfc8bf; background: #0c0c0d; }
.typing-bubble {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 172px;
  color: #fff0df;
}
.typing-label { font-weight: 650; }
.typing-dots {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.typing-dots i {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent-2);
  box-shadow: 0 0 12px rgba(255,106,0,.55);
  animation: typing-dot 1s ease-in-out infinite;
}
.typing-dots i:nth-child(2) { animation-delay: .16s; }
.typing-dots i:nth-child(3) { animation-delay: .32s; }
.bubble a { color: #ff9a23; font-weight: 700; }

@keyframes message-rise {
  from { opacity: 0; transform: translateY(9px) scale(.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes assistant-warmth {
  0% { box-shadow: 0 0 0 rgba(255,106,0,0), 0 10px 26px rgba(0,0,0,.16); }
  45% { box-shadow: 0 0 28px rgba(255,106,0,.22), 0 10px 26px rgba(0,0,0,.16); }
  100% { box-shadow: 0 10px 26px rgba(0,0,0,.16); }
}
@keyframes typing-dot {
  0%, 80%, 100% { transform: translateY(0); opacity: .42; }
  38% { transform: translateY(-5px); opacity: 1; }
}
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
  width: min(720px, 100%);
  overflow-anchor: none;
}
.media-card {
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 8px;
  background: #080809;
  overflow: hidden;
}
.media-card img, .media-card video { display: block; width: 100%; max-height: 280px; object-fit: contain; background: #030303; }
.media-card audio { width: 100%; padding: 8px; }
.media-card small { display: block; padding: 7px 8px; color: var(--muted); overflow-wrap: anywhere; }
.composer {
  border-top: 1px solid rgba(255,255,255,.11);
  background: rgba(8,8,9,.86);
  backdrop-filter: blur(12px);
  padding: 12px clamp(12px, 2.4vw, 24px) max(12px, env(safe-area-inset-bottom));
}
.composer-row {
  display: grid;
  grid-template-columns: auto auto auto minmax(0, 1fr) auto auto;
  gap: 8px;
  align-items: end;
}
.tts-status {
  min-height: 16px;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.3;
}
.tts-status.error {
  color: #ffafa6;
}
.stt-btn.recording {
  border-color: rgba(255, 106, 0, .95);
  background: rgba(255, 106, 0, .16);
  box-shadow: 0 0 0 3px rgba(255, 106, 0, .16), 0 0 22px rgba(255, 106, 0, .26);
}
.stt-btn.recording .mic-icon::after {
  background: #ff6a00;
  box-shadow: 0 0 12px rgba(255, 106, 0, .82);
  animation: mic-pulse 950ms ease-in-out infinite;
}
#message-input {
  resize: none;
  min-height: 42px;
  max-height: 150px;
}
.send-btn { min-width: 74px; }
.attachment-tray {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
}
.attachment-chip {
  min-width: 160px;
  max-width: 220px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 8px;
  background: #080809;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 6px;
}
.attachment-chip img, .attachment-chip video {
  width: 52px;
  height: 42px;
  object-fit: cover;
  border-radius: 5px;
  background: #030303;
}
.attachment-chip .file-tile {
  width: 52px;
  height: 42px;
  border-radius: 5px;
  display: grid;
  place-items: center;
  background: #171719;
  color: var(--accent-2);
  font-size: 11px;
  font-weight: 800;
}
.attachment-chip strong { display: block; font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attachment-chip small { color: var(--muted); font-size: 11px; }
.remove-attachment {
  width: 28px;
  height: 28px;
  min-height: 28px;
  border-radius: 6px;
  padding: 0;
}
.qr-icon, .attach-icon, .camera-icon, .speaker-icon, .mic-icon {
  width: 18px;
  height: 18px;
  display: inline-block;
  position: relative;
}
.qr-icon {
  background:
    linear-gradient(var(--icon) 0 0) left top/7px 7px no-repeat,
    linear-gradient(var(--icon) 0 0) right top/7px 7px no-repeat,
    linear-gradient(var(--icon) 0 0) left bottom/7px 7px no-repeat,
    linear-gradient(var(--icon) 0 0) right bottom/4px 4px no-repeat;
}
.attach-icon::before {
  content: "";
  position: absolute;
  inset: 2px 5px;
  border: 2px solid var(--icon);
  border-radius: 8px;
  transform: rotate(35deg);
}
.camera-icon::before {
  content: "";
  position: absolute;
  inset: 4px 2px 3px;
  border: 2px solid var(--icon);
  border-radius: 4px;
}
.camera-icon::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  border: 2px solid var(--icon);
  border-radius: 999px;
  left: 6px;
  top: 7px;
}
.speaker-icon::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 5px;
  width: 7px;
  height: 8px;
  background: var(--icon);
  clip-path: polygon(0 25%, 45% 25%, 100% 0, 100% 100%, 45% 75%, 0 75%);
}
.speaker-icon::after {
  content: "";
  position: absolute;
  right: 0;
  top: 2px;
  width: 7px;
  height: 11px;
  border: 2px solid var(--icon);
  border-left: 0;
  border-radius: 0 999px 999px 0;
}
.tts-toggle-btn:not(.active) .speaker-icon::after {
  right: 1px;
  top: 2px;
  width: 13px;
  height: 13px;
  border: 0;
  border-radius: 0;
  background:
    linear-gradient(45deg, transparent 43%, var(--icon) 43%, var(--icon) 57%, transparent 57%),
    linear-gradient(-45deg, transparent 43%, var(--icon) 43%, var(--icon) 57%, transparent 57%);
}
.mic-icon::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 8px;
  height: 12px;
  border: 2px solid var(--icon);
  border-radius: 999px;
}
.mic-icon::after {
  content: "";
  position: absolute;
  left: 3px;
  bottom: 1px;
  width: 12px;
  height: 8px;
  border: 2px solid var(--icon);
  border-top: 0;
  border-radius: 0 0 999px 999px;
  box-shadow: inset 0 -5px 0 -4px var(--icon);
}
@keyframes mic-pulse {
  0%, 100% { transform: scale(1); opacity: .78; }
  50% { transform: scale(1.08); opacity: 1; }
}
.scanner-dialog {
  border: 0;
  border-radius: 10px;
  padding: 0;
  background: transparent;
  color: var(--text);
}
.scanner-dialog::backdrop { background: rgba(0,0,0,.72); }
.scanner-card {
  width: min(520px, calc(100vw - 24px));
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #101012;
  box-shadow: var(--shadow);
}
.scanner-card header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
#scanner-video {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #030303;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.13);
}
@media (max-width: 860px) {
  html, body {
    height: 100%;
    overflow: hidden;
  }
  .app-shell {
    grid-template-columns: minmax(0, 1fr);
    height: 100dvh;
    min-height: 100dvh;
    overflow: hidden;
  }
  .app-shell.sidebar-collapsed {
    grid-template-columns: minmax(0, 1fr);
  }
  .sidebar-scrim {
    position: fixed;
    inset: 0;
    z-index: 30;
    display: block;
    border: 0;
    padding: 0;
    background:
      radial-gradient(circle at 20% 16%, rgba(255, 106, 0, .2), transparent 34%),
      rgba(3, 3, 3, .66);
    opacity: 1;
    pointer-events: auto;
    transition: opacity .2s ease;
  }
  .app-shell.sidebar-collapsed .sidebar-scrim {
    opacity: 0;
    pointer-events: none;
  }
  .side-rail {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 40;
    width: min(360px, calc(100vw - 44px));
    max-width: 360px;
    height: 100dvh;
    padding: 14px;
    overflow: auto;
    border-right: 1px solid var(--line);
    border-bottom: 0;
    box-shadow: 24px 0 60px rgba(0, 0, 0, .42);
    transform: translateX(0);
    transition: transform .24s cubic-bezier(.2, .9, .24, 1), box-shadow .2s ease;
  }
  .app-shell.sidebar-collapsed .side-rail {
    opacity: 1;
    pointer-events: none;
    overflow: auto;
    padding: 14px;
    border-right-color: var(--line);
    transform: translateX(calc(-100% - 24px));
  }
  .chat-main {
    grid-column: 1 / -1;
    width: 100vw;
    max-width: 100vw;
    height: 100dvh;
    min-height: 0;
  }
  .chat-topbar,
  .composer,
  .message-list {
    width: 100%;
    min-width: 0;
  }
  .message { max-width: 100%; }
}
@media (max-width: 560px) {
  .side-rail {
    width: min(340px, calc(100vw - 34px));
    padding: 12px;
  }
  .app-shell.sidebar-collapsed .side-rail {
    padding: 12px;
  }
  .chat-topbar { padding: 14px; }
  .message-list { padding: 14px; }
  .empty-state {
    padding: 12px 0;
  }
  .empty-state-logo {
    width: min(340px, 88vw);
    max-height: 220px;
    margin-bottom: 18px;
  }
  .composer { padding: 10px 10px max(10px, env(safe-area-inset-bottom)); }
  .composer-row {
    grid-template-columns: 40px 40px 40px minmax(0, 1fr) 42px 72px;
    grid-template-rows: auto auto;
    align-items: end;
    gap: 8px;
  }
  #message-input {
    grid-column: 1 / 5;
    grid-row: 1;
  }
  #stt-btn {
    grid-column: 5;
    grid-row: 1;
  }
  .send-btn {
    grid-column: 6;
    grid-row: 1;
    min-width: 0;
    width: 100%;
    padding: 0 10px;
  }
  #attach-btn {
    grid-column: 1;
    grid-row: 2;
  }
  #camera-btn {
    grid-column: 2;
    grid-row: 2;
  }
  #tts-toggle-btn {
    grid-column: 3;
    grid-row: 2;
  }
}