/* Villa Commerce API — shared UI kit (chat + sign-in). Theme with the --k-* variables. */
:root {
  --k-bg: #ffffff; --k-surface: #f5f6f8; --k-surface-2: #eceef2; --k-ink: #0b0d17; --k-ink-2: #3a474e; --k-ink-3: #6b7280;
  --k-line: #e2e5ea; --k-accent: #178841; --k-accent-2: #12713a; --k-accent-ink: #ffffff; --k-price: #c62128;
  --k-ok: #178841; --k-ok-bg: #e7f4ec; --k-warn-bg: #fdf5dc; --k-warn-ink: #6b4a0e; --k-radius: 14px;
  --k-float: 0 12px 40px rgba(11, 13, 23, .16); --k-user-bubble: #eef0f3; --k-img: #ffffff;
}
[hidden] { display: none !important; }

/* ---------- sign-in dialog ---------- */
dialog.vs-auth { border: 0; border-radius: 20px; padding: 0; width: min(400px, calc(100% - 32px)); background: var(--k-bg); color: var(--k-ink); box-shadow: var(--k-float); }
dialog.vs-auth::backdrop { background: rgba(11, 13, 23, .5); }
.vs-auth-body { position: relative; padding: 28px 24px 22px; }
.vs-auth h2 { font-size: 22px; letter-spacing: -.01em; margin: 0 0 4px; }
.vs-auth .vs-mark { height: 36px; display: block; margin-bottom: 14px; }
.vs-auth form { display: grid; gap: 10px; margin-top: 14px; }
.vs-auth input { height: 46px; border: 1px solid var(--k-line); border-radius: 10px; padding: 0 12px; background: var(--k-bg); color: var(--k-ink); font: inherit; }
.vs-auth input:focus { outline: none; border-color: var(--k-ink); }
.vs-auth .vs-code { height: 60px; font: 600 28px/1 "JetBrains Mono", ui-monospace, monospace; letter-spacing: .4em; text-align: center; padding-left: .4em; }
.vs-muted { color: var(--k-ink-3); margin: 0; }
.vs-hint { color: var(--k-ink-3); font-size: 13px; margin: 0; }
.vs-primary, .vs-secondary { height: 48px; border-radius: 12px; font-weight: 600; font-size: 15px; line-height: 1; font-family: inherit; cursor: pointer; border: 1px solid transparent; }
.vs-primary { background: var(--k-accent); color: var(--k-accent-ink); }
.vs-primary:hover { background: var(--k-accent-2); }
.vs-secondary { background: var(--k-bg); color: var(--k-ink); border-color: var(--k-line); width: 100%; }
.vs-stack { display: grid; gap: 10px; margin-top: 16px; }
.vs-switch { text-align: center; margin: 16px 0 0; font-size: 14px; color: var(--k-ink-2); }
.vs-switch a { color: var(--k-accent); font-weight: 600; cursor: pointer; }
.vs-x { position: absolute; top: 10px; right: 10px; width: 36px; height: 36px; border: 0; border-radius: 999px; background: none; font-size: 22px; cursor: pointer; color: var(--k-ink-3); }
.vs-x:hover { background: var(--k-surface); }
.vs-toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--k-ink); color: var(--k-bg); padding: 12px 18px; border-radius: 12px; z-index: 60; max-width: calc(100% - 32px); box-shadow: var(--k-float); font-weight: 500; }

/* ---------- chat ---------- */
.vc { display: flex; flex-direction: column; min-height: 0; height: 100%; color: var(--k-ink); }
.vc-thread { flex: 1; overflow-y: auto; padding: 24px 0 8px; scroll-behavior: smooth; }
.vc-intro { text-align: center; padding: 6vh 12px 12px; }
.vc-intro-icon { width: 56px; height: 56px; border-radius: 16px; margin-bottom: 14px; }
.vc-intro h2 { font-size: clamp(24px, 3.4vw, 32px); letter-spacing: -.02em; margin: 0 0 8px; }
.vc-intro p { color: var(--k-ink-2); margin: 0 auto 18px; max-width: 46ch; }
.vc-suggest { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; max-width: 640px; margin: 0 auto; }
.vc-chip { border: 1px solid var(--k-line); background: var(--k-bg); color: var(--k-ink); border-radius: 999px; padding: 10px 16px; font-weight: 500; font-size: 14px; line-height: 1.2; font-family: inherit; cursor: pointer; text-align: left; }
.vc-chip:hover { background: var(--k-surface); }
.vc-msg { display: flex; gap: 12px; margin: 0 0 18px; }
.vc-user { justify-content: flex-end; }
.vc-user .vc-body { background: var(--k-user-bubble); border-radius: 20px 20px 6px 20px; padding: 10px 16px; max-width: min(80%, 560px); white-space: pre-wrap; }
.vc-event { justify-content: center; }
.vc-event .vc-body { font-size: 13px; color: var(--k-ink-3); background: var(--k-surface); border-radius: 999px; padding: 4px 12px; }
.vc-bot .vc-body { flex: 1; min-width: 0; line-height: 1.6; }
.vc-bot .vc-body p { margin: 0 0 8px; }
.vc-bot .vc-body ul { margin: 0 0 8px; padding-left: 20px; }
.vc-avatar { flex: none; width: 32px; height: 32px; border-radius: 10px; background: var(--k-accent); color: var(--k-accent-ink); display: grid; place-items: center; font-weight: 700; font-size: 15px; }
.vc-error .vc-body { color: var(--k-warn-ink); background: var(--k-warn-bg); border-radius: 12px; padding: 10px 14px; }
.vc-typing { display: inline-flex; gap: 5px; padding: 10px 0; }
.vc-typing i { width: 7px; height: 7px; border-radius: 50%; background: var(--k-ink-3); animation: vc-bounce 1.2s infinite ease-in-out; }
.vc-typing i:nth-child(2) { animation-delay: .15s; } .vc-typing i:nth-child(3) { animation-delay: .3s; }
@keyframes vc-bounce { 0%, 80%, 100% { opacity: .3; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-4px); } }
.vc-acts { display: flex; flex-wrap: wrap; gap: 6px; margin: 2px 0 10px; }
.vc-act { display: inline-flex; align-items: center; gap: 5px; font-size: 12.5px; color: var(--k-ink-3); background: var(--k-surface); border-radius: 999px; padding: 3px 10px 3px 8px; }
.vc-act svg { color: var(--k-ok); }
.vc-act-bad { color: var(--k-warn-ink); background: var(--k-warn-bg); }

.vc-carousel { display: grid; grid-auto-flow: column; grid-auto-columns: 168px; gap: 12px; overflow-x: auto; padding: 4px 2px 12px; margin: 8px 0 4px; scroll-snap-type: x mandatory; scrollbar-width: thin; }
.vc-pcard { scroll-snap-align: start; border: 1px solid var(--k-line); border-radius: var(--k-radius); background: var(--k-bg); padding: 10px; display: flex; flex-direction: column; gap: 4px; }
.vc-pimg { aspect-ratio: 1; background: var(--k-img); border-radius: 10px; display: grid; place-items: center; overflow: hidden; }
.vc-pimg img { width: 88%; height: 88%; object-fit: contain; }
.vc-pname { font-size: 13.5px; font-weight: 500; line-height: 1.35; min-height: 2.7em; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.vc-psub { font-size: 12px; color: var(--k-ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-height: 1.3em; }
.vc-prow { display: flex; align-items: center; justify-content: space-between; gap: 6px; margin-top: 4px; }
.vc-price { color: var(--k-price); font-weight: 700; font-size: 15px; font-variant-numeric: tabular-nums; }
.vc-add { display: inline-flex; align-items: center; gap: 4px; height: 34px; padding: 0 12px; border-radius: 999px; border: 0; background: var(--k-accent); color: var(--k-accent-ink); font-weight: 600; font-size: 13px; line-height: 1; font-family: inherit; cursor: pointer; }
.vc-add:disabled { opacity: .5; cursor: default; }
.vc-add.vc-added { background: var(--k-ok-bg); color: var(--k-ok); }

.vc-card { border: 1px solid var(--k-line); border-radius: var(--k-radius); background: var(--k-bg); padding: 14px 16px; margin: 10px 0 4px; max-width: 460px; }
.vc-card-h { font-weight: 700; font-size: 14px; margin-bottom: 8px; }
.vc-lines { list-style: none; margin: 0 0 8px; padding: 0; }
.vc-lines li { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px solid var(--k-line); font-size: 14px; }
.vc-lines li:last-child { border-bottom: 0; }
.vc-lines b { font-weight: 600; white-space: nowrap; font-variant-numeric: tabular-nums; }
.vc-sum { width: 100%; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; }
.vc-sum td { padding: 3px 0; color: var(--k-ink-2); }
.vc-sum td:last-child { text-align: right; }
.vc-sum .vc-disc td:last-child { color: var(--k-ok); }
.vc-sum .vc-grand td { border-top: 1px solid var(--k-line); padding-top: 8px; font-weight: 700; font-size: 17px; color: var(--k-ink); }
.vc-form { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.vc-form input { height: 42px; border: 1px solid var(--k-line); border-radius: 10px; padding: 0 12px; font: inherit; background: var(--k-bg); color: var(--k-ink); min-width: 0; }
.vc-actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.vc-primary, .vc-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 42px; padding: 0 16px; border-radius: 10px; font-weight: 600; font-size: 14px; line-height: 1; font-family: inherit; cursor: pointer; text-decoration: none; border: 1px solid transparent; }
.vc-primary { background: var(--k-accent); color: var(--k-accent-ink); flex: 1; }
.vc-primary:hover { background: var(--k-accent-2); }
.vc-primary:disabled { opacity: .6; cursor: default; }
.vc-secondary { background: var(--k-bg); color: var(--k-ink); border-color: var(--k-line); }
.vc-secondary:hover { background: var(--k-surface); }
.vc-fine { font-size: 12px; color: var(--k-ink-3); margin: 10px 0 0; }
.vc-muted { color: var(--k-ink-3); margin: 0; }
.vc-mono { font-family: "JetBrains Mono", ui-monospace, monospace; font-size: .92em; }
.vc-ok { display: flex; align-items: center; gap: 8px; color: var(--k-ok); font-weight: 600; }
.vc-badge { font-style: normal; font-size: 11.5px; font-weight: 600; border-radius: 999px; padding: 2px 8px; margin-left: 6px; }
.vc-paid { background: var(--k-ok-bg); color: var(--k-ok); }

.vc-dock { padding: 8px 0 12px; background: linear-gradient(to top, var(--k-bg) 70%, transparent); }
.vc-composer { display: flex; align-items: flex-end; gap: 8px; border: 1px solid var(--k-line); border-radius: 26px; background: var(--k-bg); padding: 8px 8px 8px 18px; box-shadow: 0 2px 12px rgba(11, 13, 23, .06); }
.vc-composer:focus-within { border-color: var(--k-ink-3); }
.vc-composer textarea { flex: 1; border: 0; outline: none; resize: none; font-size: 16px; line-height: 1.5; font-family: inherit; background: transparent; color: var(--k-ink); padding: 7px 0; max-height: 160px; }
.vc-send { flex: none; width: 40px; height: 40px; border-radius: 999px; border: 0; background: var(--k-ink); color: var(--k-bg); display: grid; place-items: center; cursor: pointer; }
.vc-busy .vc-send { opacity: .4; cursor: default; }
.vc-note { text-align: center; font-size: 12px; color: var(--k-ink-3); margin: 8px 0 0; }
@media (max-width: 520px) { .vc-form { grid-template-columns: 1fr; } .vc-carousel { grid-auto-columns: 148px; } }