/* Device activation follows Scienshell's existing Sora and cinema palette. */
.device-activate-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .8fr); gap: clamp(32px, 7vw, 96px); align-items: start; }
.device-activate-intro h1 { max-width: 760px; font-weight: 300; }
.device-activate-intro .sub { max-width: 580px; }
.device-link-note { font-size: 14px; line-height: 1.7; color: var(--muted, #8aa3b3); max-width: 520px; margin-top: 32px; }
.device-activate-form { margin-top: 22px; padding-top: 28px; border-top: 1px solid var(--line, #24333a); }
.device-activate-form h2 { font-size: 24px; font-weight: 400; margin: 0 0 26px; }
#device-code-form { display: grid; gap: 16px; }
#device-code-form label { font-size: 14px; color: var(--muted, #8aa3b3); }
#device-code-input { font: inherit; font-size: 24px; letter-spacing: .12em; color: var(--text, #f4f7f8); background: #0b1017; border: 1px solid var(--line, #24333a); min-height: 64px; padding: 14px 16px; width: 100%; border-radius: 8px; text-transform: uppercase; }
#device-code-input::placeholder { color: #8aa3b3; opacity: .75; }
.device-link-status { color: var(--muted, #8aa3b3); font-size: 14px; line-height: 1.65; min-height: 24px; margin: 20px 0; }
.device-link-return { color: var(--text, #f4f7f8); }
.device-link-code { font-family: 'Sora', sans-serif; font-variant-numeric: tabular-nums; font-size: clamp(30px, 4vw, 58px); font-weight: 400; letter-spacing: .12em; color: #f4f7f8; margin: 24px 0; overflow-wrap: anywhere; }
.device-confirm > p { line-height: 1.7; }
.device-confirm .btn { margin: 12px 12px 0 0; }
.device-link-overlay { position: fixed; inset: 0; z-index: 20001; display: flex; align-items: center; justify-content: center; padding: 32px; background: rgba(5, 7, 11, .88); }
.device-link-panel { width: min(960px, 100%); max-height: calc(100dvh - 64px); overflow: auto; padding: clamp(28px, 5vw, 56px); border: 1px solid #24333a; border-radius: 20px; background: #0b1017; color: #f4f7f8; }
.device-link-panel h2 { font-weight: 300; font-size: clamp(28px, 3vw, 42px); margin: 12px 0 22px; line-height: 1.3; }
.device-link-panel p { line-height: 1.7; }
.device-link-handoff { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; align-items: start; margin-block: 28px; }
.device-link-handoff.has-qr { grid-template-columns: 220px minmax(0, 1fr); }
.device-link-manual > p:first-child { margin-top: 0; }
.scienshell-qr { display: block; width: 220px; max-width: 100%; aspect-ratio: 1; background: #fff; border-radius: 8px; overflow: hidden; }
.scienshell-qr[hidden] { display: none !important; }
.scienshell-qr svg { display: block; width: 100%; height: auto; }
.device-link-address { color: #b6def4; font-size: clamp(20px, 2.5vw, 30px); overflow-wrap: anywhere; }
.device-link-countdown { color: #8aa3b3; font-size: 15px; font-variant-numeric: tabular-nums; }
.device-link-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.device-link-actions button { min-height: 52px; min-width: 120px; }
.device-link-overlay .btn:focus-visible, .device-activate-form :is(input,button,a):focus-visible { outline: 3px solid #b6def4; outline-offset: 5px; }
.device-link-panel [hidden], .device-activate-form [hidden], .device-activate-form[hidden] { display: none !important; }
.device-link-panel button:disabled, .device-activate-form button:disabled { opacity: .55; }
@media (max-width: 760px) {
  .device-activate-layout { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .device-activate-form { margin-top: 0; }
  .device-link-overlay { padding: 18px; }
  .device-link-panel { max-height: calc(100dvh - 36px); }
  .device-link-handoff, .device-link-handoff.has-qr { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .scienshell-qr { width: 200px; }
}