:root {
  --bg: #04080f; --panel: rgba(8, 18, 32, .72); --line: rgba(77, 225, 255, .22); --text: #d8f3ff; --dim: #7ba3b8;
  --cyan: #4de1ff; --amber: #ffb84d; --green: #5dffb0; --red: #ff6b6b;
  --font: ui-sans-serif, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); overflow: hidden; }
canvas#orb { position: fixed; inset: 0; width: 100%; height: 100%; }
.hidden { display: none !important; }
h1 { letter-spacing: .5em; font-weight: 300; margin: 0 0 .5rem; text-align: center; text-indent: .5em; }
h2 { margin: 0 0 1rem; font-weight: 500; }
button, input { font: inherit; color: inherit; }
button { background: rgba(77, 225, 255, .08); border: 1px solid var(--line); border-radius: 10px; padding: .6rem 1rem; cursor: pointer; transition: background .15s, border-color .15s; }
button:hover { background: rgba(77, 225, 255, .18); }
button:focus-visible, input:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
button.primary { background: rgba(77, 225, 255, .22); border-color: var(--cyan); }
button.icon { width: 2.6rem; height: 2.6rem; padding: 0; border-radius: 50%; font-size: 1.1rem; }
button.big { width: 3rem; height: 3rem; flex: none; }
button.huge { font-size: 1.25rem; padding: 1rem 2.5rem; border-radius: 999px; }
input[type=text], input:not([type]), input[inputmode] { background: rgba(4, 12, 22, .8); border: 1px solid var(--line); border-radius: 10px; padding: .7rem .9rem; width: 100%; }
.error { color: var(--red); min-height: 1.3em; margin: .5rem 0 0; text-align: center; }

.panel { position: fixed; inset: 0; margin: auto; width: min(92vw, 380px); height: max-content; padding: 2rem 1.5rem; background: var(--panel); border: 1px solid var(--line); border-radius: 18px; backdrop-filter: blur(10px); display: grid; gap: .9rem; }
.panel p { text-align: center; color: var(--dim); margin: 0; }
#code-form { display: grid; gap: .7rem; }
#code { text-align: center; letter-spacing: .5em; font-size: 1.4rem; text-indent: .5em; }

#app { position: fixed; inset: 0; display: grid; grid-template-rows: auto 1fr auto auto auto; padding: max(14px, env(safe-area-inset-top)) 16px max(14px, env(safe-area-inset-bottom)); gap: .6rem; max-width: 760px; margin: 0 auto; }
header { display: flex; justify-content: space-between; align-items: center; }
.brand { letter-spacing: .45em; font-weight: 300; color: var(--cyan); }
.chips { display: flex; align-items: center; gap: .6rem; }
.chip { font-size: .8rem; padding: .3rem .7rem; border: 1px solid var(--line); border-radius: 999px; color: var(--dim); background: rgba(4, 12, 22, .6); }
.chip.on { color: var(--green); border-color: rgba(93, 255, 176, .4); }
.chip.off { color: var(--amber); border-color: rgba(255, 184, 77, .4); }

#stage { display: grid; place-items: end center; text-align: center; padding-bottom: 1.5vh; cursor: pointer; user-select: none; }
#state-label { font-size: clamp(1.1rem, 3.5vw, 1.6rem); letter-spacing: .12em; text-transform: uppercase; font-weight: 300; }
#sub-label { color: var(--dim); font-size: .85rem; min-height: 1.2em; margin-top: .3rem; }

#log { max-height: 30vh; overflow-y: auto; display: flex; flex-direction: column; gap: .5rem; padding: .25rem; mask-image: linear-gradient(transparent, #000 12%); scrollbar-width: thin; }
.msg { max-width: 88%; padding: .55rem .85rem; border-radius: 14px; background: var(--panel); border: 1px solid var(--line); line-height: 1.4; white-space: pre-wrap; overflow-wrap: anywhere; backdrop-filter: blur(6px); }
.msg.user { align-self: flex-end; border-color: rgba(255, 184, 77, .35); color: #ffe8c2; }
.msg.bot { align-self: flex-start; }
.msg small { display: block; color: var(--dim); margin-top: .25rem; font-size: .72rem; }
.msg.live { opacity: .6; font-style: italic; }

#confirm { display: flex; align-items: center; gap: .6rem; padding: .7rem .9rem; border: 1px solid rgba(255, 184, 77, .5); border-radius: 12px; background: rgba(40, 26, 4, .7); }
#confirm span { flex: 1; font-size: .92rem; }

#say-form { display: flex; gap: .6rem; align-items: center; }

.overlay { position: fixed; inset: 0; display: grid; place-content: center; justify-items: center; gap: 1rem; background: rgba(2, 6, 12, .78); backdrop-filter: blur(6px); text-align: center; padding: 1.5rem; z-index: 5; }
.overlay p { max-width: 30rem; color: var(--dim); margin: 0; }
.card { width: min(92vw, 420px); background: #07111e; border: 1px solid var(--line); border-radius: 16px; padding: 1.4rem; text-align: left; }
.row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .65rem 0; border-bottom: 1px solid rgba(77, 225, 255, .1); }
.row.col { flex-direction: column; align-items: stretch; }
.row input[type=range] { width: 100%; }
.buttons { display: flex; justify-content: space-between; margin-top: 1.1rem; }

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