/* Knox – Farben angelehnt an datenwerk-ulm.de, mit Schwarz und Silber */
:root {
  --ink: #02060f;
  --navy: #061029;
  --card: #08132f;
  --card-2: #0a1a3d;
  --line: #1c2b52;
  --blue: #014ed9;
  --sky: #3b8cf6;
  --label: #5aa0fa;
  --ice: #9cc7ff;
  --soft: #d3dbea;
  --silver: #a9b6cd;
  --silver-2: #ccd5e4;
  --mute: #6b7a96;
  --warn: #f5c46b;
  --glow: 0 0 24px rgba(59, 140, 246, .45);
  --radius: 14px;
  --font: "Poppins", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  color: var(--soft);
  background:
    radial-gradient(1200px 700px at 50% -10%, rgba(1, 78, 217, .22), transparent 60%),
    radial-gradient(800px 500px at 100% 110%, rgba(59, 140, 246, .10), transparent 60%),
    var(--ink);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
body::before { /* feines Raster */
  content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .35;
  background-image:
    linear-gradient(rgba(156, 199, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(156, 199, 255, .05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}
[hidden] { display: none !important; }
svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* --- Marke --- */
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: .32em; color: var(--silver-2); font-size: 15px; }
.brand-lg { font-size: 26px; justify-content: center; }
.brand-mark {
  width: 12px; height: 12px; border-radius: 50%;
  background: radial-gradient(circle, #fff 0 20%, var(--sky) 45%, var(--blue) 75%);
  box-shadow: var(--glow);
}
.muted { color: var(--mute); margin: 0; }
.error { color: var(--warn); min-height: 1.2em; margin: 0; font-size: 14px; }

/* --- Buttons --- */
.btn {
  font: inherit; border: 1px solid var(--line); border-radius: 12px; padding: 12px 18px;
  color: var(--soft); background: var(--card); cursor: pointer;
}
.btn-primary {
  border-color: transparent; color: #fff; font-weight: 500;
  background: linear-gradient(135deg, var(--blue), var(--sky));
  box-shadow: 0 6px 24px rgba(1, 78, 217, .35);
}
.icon-btn {
  display: grid; place-items: center; width: 42px; height: 42px; flex: none;
  border-radius: 12px; border: 1px solid var(--line); background: rgba(8, 19, 47, .6);
  color: var(--silver); cursor: pointer;
}
.icon-btn:hover { color: #fff; border-color: var(--sky); }
button:focus-visible, textarea:focus-visible, input:focus-visible { outline: 2px solid var(--sky); outline-offset: 2px; }

/* --- Login --- */
.login { height: 100%; display: grid; place-items: center; padding: 24px; position: relative; }
.login-card {
  width: min(360px, 100%); display: flex; flex-direction: column; gap: 14px; text-align: center;
  padding: 32px 24px; border-radius: 20px;
  background: linear-gradient(180deg, rgba(10, 26, 61, .85), rgba(6, 16, 41, .85));
  border: 1px solid var(--line);
  box-shadow: 0 0 0 1px rgba(204, 213, 228, .05) inset, 0 30px 80px rgba(0, 0, 0, .6);
}
.login-card input {
  font: inherit; font-size: 16px; padding: 12px 14px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--ink); color: #fff;
}

/* --- App-Layout --- */
.app {
  position: relative; height: 100%; height: 100dvh;
  display: grid; grid-template-rows: auto auto 1fr auto;
  grid-template-areas: "top" "stage" "log" "dock";
  max-width: 1200px; margin: 0 auto;
  padding: env(safe-area-inset-top, 0px) max(12px, env(safe-area-inset-right, 0px)) env(safe-area-inset-bottom, 0px) max(12px, env(safe-area-inset-left, 0px));
}
.topbar { grid-area: top; display: flex; align-items: center; gap: 12px; padding: 12px 4px; }
.status-text {
  margin-left: auto; font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--silver);
  padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; background: rgba(6, 16, 41, .7);
}
.voice-select {
  max-width: 34vw; height: 42px; padding: 0 10px; flex: 0 1 auto; min-width: 0;
  border-radius: 12px; border: 1px solid var(--line); background: rgba(8, 19, 47, .6);
  color: var(--silver); font: inherit; font-size: 13px; cursor: pointer; text-overflow: ellipsis;
}
.voice-select:hover { color: #fff; border-color: var(--sky); }
.voice-select:focus-visible { outline: 2px solid var(--sky); outline-offset: 2px; }
.voice-select option { background: var(--navy); color: var(--soft); }
.voice-select[hidden] { display: none; }
.stage { grid-area: stage; display: flex; flex-direction: column; align-items: center; padding: 4px 0 8px; }
.caption { min-height: 1.4em; margin: 10px 0 0; text-align: center; color: var(--ice); font-size: 15px; max-width: 90%; }

/* --- Orb (Zustandsanzeige) --- */
.orb { --size: min(46vw, 230px); --c: var(--silver); position: relative; width: var(--size); height: var(--size); transition: --c .3s; }
.ring { position: absolute; border-radius: 50%; inset: 0; border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); transition: border-color .4s, opacity .4s; }
.r1 { inset: 0; border-width: 1px; }
.r2 { inset: 8%; border: 2px dashed color-mix(in srgb, var(--c) 45%, transparent); animation: spin 28s linear infinite; }
.r3 {
  inset: 16%; border: 3px solid transparent;
  border-top-color: var(--c); border-bottom-color: color-mix(in srgb, var(--c) 40%, transparent);
  animation: spin 9s linear infinite reverse;
}
.r4 { inset: 25%; border: 1px solid color-mix(in srgb, var(--c) 55%, transparent); box-shadow: 0 0 30px color-mix(in srgb, var(--c) 30%, transparent) inset; }
.core {
  position: absolute; inset: 33%; border-radius: 50%; display: grid; place-items: center;
  background: radial-gradient(circle, color-mix(in srgb, var(--c) 55%, #fff) 0 12%, color-mix(in srgb, var(--c) 70%, transparent) 40%, transparent 72%);
  box-shadow: 0 0 40px color-mix(in srgb, var(--c) 45%, transparent);
  transition: transform .15s;
}
.core-inner { width: 38%; height: 38%; border-radius: 50%; background: radial-gradient(circle, #fff, color-mix(in srgb, var(--c) 80%, #fff)); opacity: .9; }
.bars { position: absolute; left: 50%; bottom: -6px; transform: translateX(-50%); display: flex; gap: 4px; height: 26px; align-items: center; opacity: 0; transition: opacity .3s; }
.bars i { width: 4px; height: 6px; border-radius: 2px; background: var(--c); }

.orb[data-state="idle"] { --c: var(--silver); }
.orb[data-state="idle"] .ring { opacity: .55; }
.orb[data-state="idle"] .core { animation: breathe 5s ease-in-out infinite; opacity: .7; }

.orb[data-state="listening"] { --c: var(--sky); }
.orb[data-state="listening"] .core { animation: breathe 1.8s ease-in-out infinite; }
.orb[data-state="listening"] .r1 { animation: ping 1.8s ease-out infinite; }
.orb[data-state="listening"].hearing .core { transform: scale(1.12); }

.orb[data-state="thinking"] { --c: var(--label); }
.orb[data-state="thinking"] .r2 { animation-duration: 3s; }
.orb[data-state="thinking"] .r3 { animation-duration: .9s; border-left-color: var(--ice); }
.orb[data-state="thinking"] .core { animation: breathe .9s ease-in-out infinite; }

.orb[data-state="speaking"] { --c: var(--ice); }
.orb[data-state="speaking"] .bars { opacity: 1; }
.orb[data-state="speaking"] .bars i { animation: eq .9s ease-in-out infinite; }
.orb[data-state="speaking"] .bars i:nth-child(2) { animation-delay: -.7s; }
.orb[data-state="speaking"] .bars i:nth-child(3) { animation-delay: -.2s; }
.orb[data-state="speaking"] .bars i:nth-child(4) { animation-delay: -.5s; }
.orb[data-state="speaking"] .bars i:nth-child(5) { animation-delay: -.1s; }
.orb[data-state="speaking"] .bars i:nth-child(6) { animation-delay: -.6s; }
.orb[data-state="speaking"] .bars i:nth-child(7) { animation-delay: -.3s; }
.orb[data-state="speaking"] .r3 { animation-duration: 4s; }
.orb.beat .core { transform: scale(1.1); }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes breathe { 0%, 100% { transform: scale(.94); opacity: .85; } 50% { transform: scale(1.04); opacity: 1; } }
@keyframes ping { 0% { transform: scale(.9); opacity: .9; } 100% { transform: scale(1.18); opacity: 0; } }
@keyframes eq { 0%, 100% { height: 5px; } 50% { height: 24px; } }

/* --- Chatverlauf --- */
.log {
  grid-area: log; overflow-y: auto; padding: 8px 4px 16px; display: flex; flex-direction: column; gap: 10px;
  overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: var(--line) transparent;
  mask-image: linear-gradient(to bottom, transparent 0, #000 18px);
}
.msg {
  max-width: min(78ch, 88%); padding: 10px 14px; border-radius: var(--radius); line-height: 1.5;
  white-space: pre-wrap; overflow-wrap: anywhere; position: relative;
}
.msg.user {
  align-self: flex-end; color: #fff;
  background: linear-gradient(135deg, rgba(1, 78, 217, .85), rgba(59, 140, 246, .75));
  border-bottom-right-radius: 4px;
}
.msg.assistant {
  align-self: flex-start; background: rgba(8, 19, 47, .85); border: 1px solid var(--line);
  border-bottom-left-radius: 4px; box-shadow: 0 0 0 1px rgba(204, 213, 228, .03) inset;
}
.msg.assistant::before { content: "KNOX"; display: block; font-size: 10px; letter-spacing: .25em; color: var(--label); margin-bottom: 4px; }
.msg.error { align-self: center; color: var(--warn); background: rgba(245, 196, 107, .08); border: 1px solid rgba(245, 196, 107, .3); font-size: 14px; }
.msg.pending::after { content: "▍"; color: var(--sky); animation: blink 1s steps(1) infinite; }
.msg .meta { display: block; font-size: 11px; color: var(--mute); margin-top: 4px; }
.msg.user .meta { color: rgba(255, 255, 255, .65); }
.msg code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; background: rgba(0, 0, 0, .35); padding: 1px 5px; border-radius: 5px; }
.msg pre { white-space: pre; overflow-x: auto; background: rgba(0, 0, 0, .4); padding: 10px; border-radius: 8px; margin: 6px 0; }
.msg pre code { background: none; padding: 0; }
.tool-note { font-size: 12px; color: var(--mute); align-self: flex-start; padding-left: 6px; }
@keyframes blink { 50% { opacity: 0; } }

/* --- Dock --- */
.dock { grid-area: dock; display: flex; gap: 10px; align-items: flex-end; padding: 10px 0 12px; }
.call-btn {
  flex: none; display: flex; align-items: center; gap: 10px; height: 52px; padding: 0 20px 0 16px;
  font: inherit; font-weight: 500; color: #fff; cursor: pointer; border-radius: 999px; border: 1px solid transparent;
  background: linear-gradient(135deg, var(--blue), var(--sky));
  box-shadow: 0 8px 28px rgba(1, 78, 217, .4);
  transition: background .3s, box-shadow .3s;
}
.call-btn svg { width: 22px; height: 22px; }
.call-btn .ic-stop { display: none; fill: currentColor; stroke: none; }
.call-btn.active {
  background: linear-gradient(135deg, #1b2537, #3b4456); border-color: var(--silver);
  box-shadow: 0 0 0 4px rgba(169, 182, 205, .12), 0 8px 28px rgba(0, 0, 0, .5);
}
.call-btn.active .ic-start { display: none; }
.call-btn.active .ic-stop { display: block; }
.text-form {
  flex: 1; min-width: 0; display: flex; align-items: flex-end; gap: 8px; padding: 5px 5px 5px 14px;
  border: 1px solid var(--line); border-radius: 26px; background: rgba(6, 16, 41, .85);
}
.text-form:focus-within { border-color: var(--sky); }
.text-form textarea {
  flex: 1; min-width: 0; resize: none; border: 0; outline: none; background: transparent; color: #fff;
  font: inherit; font-size: 16px; line-height: 1.4; padding: 9px 0; max-height: 140px;
}
.text-form textarea::placeholder { color: var(--mute); }
.text-form .send { border-radius: 50%; background: var(--blue); border-color: transparent; color: #fff; }

/* Desktop: Orb links, Verlauf rechts */
@media (min-width: 900px) {
  .app {
    grid-template-columns: 380px 1fr; grid-template-rows: auto 1fr auto;
    grid-template-areas: "top top" "stage log" "dock dock"; column-gap: 24px;
  }
  .stage { justify-content: center; padding-bottom: 60px; }
  .orb { --size: 280px; }
}
/* Handy quer / sehr niedrig */
@media (max-height: 560px) {
  .orb { --size: 110px; }
  .caption { font-size: 13px; }
}
@media (max-width: 480px) {
  .call-btn .call-label { display: none; }
  .call-btn { padding: 0; width: 52px; justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0s !important; animation-iteration-count: 1 !important; }
}