/* URBI — Urban Intelligence HUD
   Sits over the BlockUrb design language: mono type, moss accent, signal amber,
   cartographic ticks. Dark on dark. */

/* ---------------- Floating trigger (FAB) ---------------- */
.urbi-fab {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 9500;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px 10px 12px;
  background: var(--bg-dark);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.22s cubic-bezier(.2,.7,.2,1), border-color 0.18s, background 0.18s;
}
[data-mode="dark"] .urbi-fab {
  background: var(--bg-dark);
  color: var(--ink);
  border-color: var(--line-strong);
}
.urbi-fab:hover {
  border-color: oklch(0.78 0.08 145);
  transform: translateY(-1px);
}
.urbi-fab.is-open {
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
}
.urbi-fab__ring {
  position: relative;
  width: 14px;
  height: 14px;
  border: 1px solid oklch(0.78 0.08 145);
  border-radius: 50%;
  display: inline-block;
}
.urbi-fab__ring::before {
  content: "";
  position: absolute;
  inset: -6px;
  border: 1px dashed color-mix(in srgb, oklch(0.78 0.08 145) 60%, transparent);
  border-radius: 50%;
  animation: urbiSpin 8s linear infinite;
}
.urbi-fab__core {
  position: absolute;
  width: 4px;
  height: 4px;
  background: oklch(0.78 0.08 145);
  border-radius: 50%;
  left: 17px;
  top: 50%;
  transform: translateY(-50%);
  box-shadow: 0 0 8px oklch(0.78 0.08 145);
  animation: urbiPulse 1.6s ease-in-out infinite;
}
.urbi-fab__label {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
}
.urbi-fab__name {
  font-weight: 600;
  color: var(--ink);
}
.urbi-fab__shortcut {
  font-size: 10px;
  color: var(--ink-muted);
  border: 1px solid var(--line);
  padding: 2px 5px;
}

@keyframes urbiSpin { to { transform: rotate(360deg); } }
@keyframes urbiPulse {
  0%, 100% { opacity: 0.5; transform: translateY(-50%) scale(0.9); }
  50%      { opacity: 1;   transform: translateY(-50%) scale(1.15); }
}

/* ---------------- HUD panel ---------------- */
.urbi-hud {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: min(440px, calc(100vw - 56px));
  height: min(620px, calc(100vh - 56px));
  z-index: 9600;
  pointer-events: none;
  opacity: 0;
  transform: translateY(20px) scale(0.96);
  transition: opacity 0.28s cubic-bezier(.2,.7,.2,1), transform 0.32s cubic-bezier(.2,.7,.2,1);
}
.urbi-hud.is-open {
  pointer-events: auto;
  opacity: 1;
  transform: translateY(0) scale(1);
}

.urbi-hud__bezel {
  position: relative;
  width: 100%;
  height: 100%;
  background: #0A0F0C;
  border: 1px solid #2A352E;
  color: #E8E5DC;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow:
    0 24px 80px -20px rgba(0,0,0,0.6),
    0 0 0 1px rgba(255,255,255,0.02) inset,
    0 0 60px -20px oklch(0.55 0.10 145 / 0.18) inset;
}

/* corner ticks */
.urbi-hud__bezel::before,
.urbi-hud__bezel::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid oklch(0.78 0.08 145);
  pointer-events: none;
}
.urbi-hud__bezel::before {
  top: 6px; left: 6px;
  border-right: 0; border-bottom: 0;
}
.urbi-hud__bezel::after {
  bottom: 6px; right: 6px;
  border-left: 0; border-top: 0;
}

/* Scan line decoration */
.urbi-hud__scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent 3px,
      rgba(255,255,255,0.014) 3px,
      rgba(255,255,255,0.014) 4px
    );
  mix-blend-mode: screen;
}

/* ---------------- Head ---------------- */
.urbi-hud__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px 12px;
  border-bottom: 1px solid #1E2823;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.urbi-hud__brand { display: inline-flex; align-items: center; gap: 10px; }
.urbi-hud__dot {
  width: 8px; height: 8px;
  background: oklch(0.78 0.08 145);
  border-radius: 50%;
  box-shadow: 0 0 10px oklch(0.78 0.08 145);
  animation: urbiPulseDot 1.6s ease-in-out infinite;
}
@keyframes urbiPulseDot { 0%,100% { opacity: 0.5; } 50% { opacity: 1; } }
.urbi-hud__title { font-weight: 600; font-size: 12px; color: #F0EDDF; letter-spacing: 0.12em; }
.urbi-hud__sub { color: #6B7268; }
.urbi-hud__meta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #8E928A;
}
.urbi-hud__status { color: oklch(0.78 0.08 145); }
.urbi-hud__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  margin-left: 6px;
  border: 1px solid #2A352E;
  color: #C9CCBE;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.urbi-hud__close:hover { border-color: oklch(0.78 0.08 145); color: #F0EDDF; }

/* ---------------- Toolbar ---------------- */
.urbi-hud__toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-bottom: 1px solid #1E2823;
  background: #0E1410;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: #6B7268;
}
.urbi-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid #2A352E;
  color: #8E928A;
  cursor: pointer;
  transition: all 0.15s;
}
.urbi-toggle:hover { color: #C9CCBE; border-color: #3C463F; }
.urbi-toggle.is-on { color: oklch(0.78 0.08 145); border-color: oklch(0.55 0.10 145 / 0.6); }
.urbi-hud__sep { flex: 1; border-top: 1px dashed #1E2823; align-self: center; height: 1px; }
.urbi-hud__doc { color: #5A5F58; }

/* ---------------- Body ---------------- */
.urbi-hud__body {
  flex: 1;
  overflow-y: auto;
  padding: 18px 16px;
  scrollbar-width: thin;
  scrollbar-color: #2A352E transparent;
}
.urbi-hud__body::-webkit-scrollbar { width: 6px; }
.urbi-hud__body::-webkit-scrollbar-thumb { background: #2A352E; }

/* Empty state */
.urbi-empty { padding: 8px 4px; }
.urbi-empty__hello {
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #F0EDDF;
  margin: 0 0 14px;
}
.urbi-empty__hello em { color: oklch(0.82 0.10 145); font-style: italic; }
.urbi-empty__sub {
  font-size: 13px;
  line-height: 1.5;
  color: #8E928A;
  margin: 0 0 24px;
  max-width: 320px;
}
.urbi-empty__suggest { display: flex; flex-direction: column; gap: 6px; }
.urbi-suggest {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  background: transparent;
  border: 1px solid #1E2823;
  color: #C9CCBE;
  font-family: var(--font-sans);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: all 0.18s;
}
.urbi-suggest:hover {
  border-color: oklch(0.55 0.10 145 / 0.7);
  background: rgba(255,255,255,0.015);
  color: #F0EDDF;
}
.urbi-suggest__num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #5A5F58;
  letter-spacing: 0.08em;
}
.urbi-suggest__arrow { margin-left: auto; color: #5A5F58; transition: color 0.18s, transform 0.18s; }
.urbi-suggest:hover .urbi-suggest__arrow {
  color: oklch(0.82 0.10 145);
  transform: translateX(3px);
}

/* Messages */
.urbi-msg { margin-bottom: 18px; }
.urbi-msg__tag {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #5A5F58;
  margin-bottom: 6px;
  display: inline-flex;
  gap: 8px;
}
.urbi-msg__time { color: #3C443E; }
.urbi-msg__body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.55;
  color: #C9CCBE;
  white-space: pre-wrap;
}
.urbi-msg--user .urbi-msg__tag { color: oklch(0.65 0.16 55); }
.urbi-msg--user .urbi-msg__body {
  color: #E8E5DC;
  padding-left: 12px;
  border-left: 2px solid oklch(0.65 0.16 55 / 0.5);
}
.urbi-msg--assistant .urbi-msg__tag { color: oklch(0.78 0.08 145); }
.urbi-msg--assistant .urbi-msg__body {
  padding-left: 12px;
  border-left: 2px solid oklch(0.55 0.10 145 / 0.5);
}
.urbi-msg__body code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: oklch(0.82 0.10 145);
  background: rgba(255,255,255,0.03);
  padding: 1px 4px;
}
.urbi-msg__nav {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.05em;
  color: oklch(0.78 0.08 145);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px dashed oklch(0.55 0.10 145 / 0.5);
}
.urbi-msg__navspin {
  width: 8px; height: 8px;
  border: 1px solid oklch(0.78 0.08 145);
  border-top-color: transparent;
  border-radius: 50%;
  animation: urbiSpin 0.9s linear infinite;
}

/* Thinking dots */
.urbi-thinking {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}
.urbi-thinking span {
  width: 5px; height: 5px;
  background: oklch(0.78 0.08 145);
  border-radius: 50%;
  animation: urbiThink 1.2s ease-in-out infinite;
}
.urbi-thinking span:nth-child(2) { animation-delay: 0.15s; }
.urbi-thinking span:nth-child(3) { animation-delay: 0.3s; }
@keyframes urbiThink {
  0%, 60%, 100% { opacity: 0.25; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-2px); }
}

/* ---------------- Input ---------------- */
.urbi-hud__input {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid #1E2823;
  background: #0E1410;
}
.urbi-hud__prompt {
  font-family: var(--font-mono);
  color: oklch(0.78 0.08 145);
  font-size: 16px;
}
.urbi-hud__input input {
  flex: 1;
  background: transparent;
  border: 0;
  color: #F0EDDF;
  font-family: var(--font-sans);
  font-size: 14px;
  outline: none;
  padding: 6px 0;
}
.urbi-hud__input input::placeholder { color: #5A5F58; }

.urbi-mic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border: 1px solid #2A352E;
  background: transparent;
  color: #8E928A;
  cursor: pointer;
  transition: all 0.15s;
}
.urbi-mic:hover { color: #C9CCBE; border-color: #3C463F; }
.urbi-mic.is-listening {
  color: oklch(0.65 0.16 55);
  border-color: oklch(0.65 0.16 55 / 0.6);
  animation: urbiMicPulse 1s ease-in-out infinite;
}
@keyframes urbiMicPulse {
  0%, 100% { box-shadow: 0 0 0 0 oklch(0.65 0.16 55 / 0.5); }
  50%      { box-shadow: 0 0 0 6px oklch(0.65 0.16 55 / 0); }
}

.urbi-send {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: oklch(0.48 0.07 145);
  color: #F4F1EA;
  border: 1px solid oklch(0.40 0.07 145);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s;
}
.urbi-send:hover:not(:disabled) {
  background: oklch(0.55 0.09 145);
  border-color: oklch(0.78 0.08 145);
}
.urbi-send:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.urbi-send .arrow { transition: transform 0.15s; }
.urbi-send:hover:not(:disabled) .arrow { transform: translateX(2px); }

/* ---------------- Foot ---------------- */
.urbi-hud__foot {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-top: 1px solid #1E2823;
  background: #080C0A;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #5A5F58;
  overflow: hidden;
  white-space: nowrap;
}
.urbi-hud__pulse {
  width: 4px; height: 4px;
  background: oklch(0.55 0.10 145);
  border-radius: 50%;
  flex-shrink: 0;
}

/* Mobile */
@media (max-width: 640px) {
  .urbi-fab { right: 16px; bottom: 16px; padding: 10px 14px; }
  .urbi-hud { right: 12px; bottom: 12px; left: 12px; width: auto; height: 80vh; }
  .urbi-fab__shortcut { display: none; }
}