* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--color-canvas); color: var(--color-text); font: 16px/1.5 Inter, ui-sans-serif, system-ui, sans-serif; }
button, input, textarea, select { font: inherit; color: inherit; }
button, a { -webkit-tap-highlight-color: var(--color-transparent); }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; }
h1, h2, p { margin-top: 0; }
.eyebrow { margin-bottom: .25rem; color: var(--color-accent); font-size: .72rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.muted { color: var(--color-text-muted); font-weight: 400; }
.welcome-shell { min-height: 100%; display: grid; place-items: center; padding: 2rem; background: radial-gradient(circle at top, var(--color-surface-soft), var(--color-canvas) 55%); }
.welcome-card { width: min(34rem, 100%); padding: clamp(2rem, 7vw, 4.5rem); border: 1px solid var(--color-border); border-radius: 2rem; background: var(--color-surface); box-shadow: 0 2rem 5rem var(--color-shadow); }
.welcome-card h1 { margin-bottom: 1rem; font-family: Georgia, serif; font-size: clamp(2.6rem, 8vw, 5rem); line-height: .95; }
.welcome-copy { max-width: 27rem; margin-bottom: 2rem; color: var(--color-text-muted); font-size: 1.1rem; }
.brand-mark { display: grid; width: 3.25rem; height: 3.25rem; place-items: center; margin-bottom: 2rem; border-radius: 35% 65% 60% 40%; background: var(--color-accent); color: var(--color-accent-ink); font: 800 1.5rem Georgia, serif; transform: rotate(-7deg); }
.welcome-logo { display: block; width: min(100%, 25rem); height: auto; margin-bottom: 2rem; }
.primary-button, .send-button { display: inline-flex; justify-content: center; align-items: center; border: 0; border-radius: .8rem; background: var(--color-accent); color: var(--color-accent-ink); font-weight: 800; text-decoration: none; cursor: pointer; }
.quiet-button { min-height: 2.5rem; border: 1px solid var(--color-border); border-radius: .8rem; background: var(--color-transparent); color: var(--color-text-muted); cursor: pointer; }
.primary-button { min-height: 3rem; padding: .75rem 1.1rem; }
.send-button { padding: .6rem 1.15rem; }
.icon-button { display: inline-grid; width: 2.5rem; height: 2.5rem; flex: 0 0 auto; place-items: center; border: 1px solid var(--color-border); border-radius: 50%; background: var(--color-surface-raised); cursor: pointer; }
.rumr-search { padding: .55rem .6rem 0; }
.search-trigger { color: var(--color-text-muted); }
.sidebar-header-actions { display: flex; flex: 0 0 auto; gap: .4rem; }
.quick-search { display: grid; gap: .35rem; padding-top: .45rem; }
.quick-search[hidden] { display: none; }
.quick-search input { width: 100%; padding: .62rem .7rem; border: 1px solid var(--color-border); border-radius: .7rem; background: var(--color-surface-raised); }
.advanced-search-link { justify-self: end; border: 0; background: transparent; color: var(--color-accent-strong); font-size: .78rem; cursor: pointer; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
[data-tooltip] { position: relative; }
[data-tooltip]::after { content: attr(data-tooltip); position: absolute; z-index: 50; top: calc(100% + .45rem); right: 0; width: max-content; max-width: min(14rem, calc(100vw - 1rem)); padding: .4rem .58rem; border: 1px solid var(--color-border); border-radius: .5rem; background: var(--color-text); color: var(--color-canvas); font-size: .72rem; font-weight: 700; line-height: 1.25; white-space: normal; text-align: center; opacity: 0; pointer-events: none; transform: translateY(-.2rem); transition: opacity .14s, transform .14s; box-shadow: 0 .4rem 1rem var(--color-shadow); }
[data-tooltip]:hover::after, [data-tooltip]:focus-visible::after { opacity: 1; transform: translateY(0); }
.rumr-search [data-tooltip]::after, .chat-details [data-tooltip]::after { right: auto; left: 0; }
.search-dialog { width: min(42rem, calc(100% - 2rem)); }
.search-scope { display: flex !important; align-items: center; gap: .55rem !important; }
.search-scope input { width: auto !important; }
.search-results { display: grid; gap: .55rem; max-height: 22rem; overflow: auto; }
.search-result { display: grid; gap: .2rem; padding: .7rem; border: 1px solid var(--color-border); border-radius: .75rem; background: var(--color-surface-raised); color: inherit; text-align: left; cursor: pointer; }
.search-result strong { color: var(--color-accent-strong); }
.search-result span { color: var(--color-text-muted); font-size: .85rem; }
.app-shell { height: 100%; display: grid; grid-template-columns: minmax(17rem, 22rem) minmax(0, 1fr); overflow: hidden; }
.app-shell.details-open { grid-template-columns: minmax(17rem, 22rem) minmax(0, 1fr) minmax(17rem, 20rem); }
.sidebar { min-width: 0; display: flex; flex-direction: column; border-right: 1px solid var(--color-border); background: var(--color-surface); }
.sidebar-header, .chat-header { min-height: 5.5rem; display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.25rem; border-bottom: 1px solid var(--color-border); }
.sidebar-header { gap: .75rem; }
.sidebar-logo { width: 2.75rem; height: 2.75rem; flex: 0 0 auto; object-fit: contain; }
.sidebar-title { margin-right: auto; }
.sidebar-header h1, .chat-header h2 { margin: 0; font: 700 1.25rem Georgia, serif; }
.chat-list { flex: 1; overflow: auto; padding: .6rem; }
.profile-chip { display: flex; gap: .75rem; align-items: center; width: calc(100% - 1.2rem); margin: .6rem; padding: .75rem; border: 1px solid var(--color-border); border-radius: 1rem; background: var(--color-surface-raised); text-align: left; cursor: pointer; }
.friends-chip { display: flex; gap: .75rem; align-items: center; width: calc(100% - 1.2rem); margin: 0 .6rem; padding: .65rem .75rem; border: 1px solid var(--color-border); border-radius: 1rem; background: var(--color-surface-raised); text-align: left; cursor: pointer; }
.friends-chip > span:first-child { display: grid; width: 2.5rem; height: 2.5rem; flex: 0 0 auto; place-items: center; border-radius: 50%; background: var(--color-surface-soft); color: var(--color-accent); font-size: 1.4rem; font-weight: 800; }
.avatar { width: 2.5rem; height: 2.5rem; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: var(--color-surface-soft); color: var(--color-accent); object-fit: cover; font-weight: 800; }
.initials-avatar { background: var(--color-accent); color: var(--color-accent-ink); letter-spacing: .02em; }
.conversation-panel { min-width: 0; display: flex; flex-direction: column; background: var(--color-canvas); }
.chat-details { min-width: 0; overflow-y: auto; padding: 1.25rem; border-left: 1px solid var(--color-border); background: var(--color-surface); }
.chat-details-hero { display: grid; justify-items: center; padding: .5rem 0 1.25rem; text-align: center; }
.chat-details-hero .avatar { width: 5.5rem; height: 5.5rem; margin-bottom: .8rem; font-size: 1.5rem; }
.chat-details-hero h2 { margin: 0; font: 700 1.3rem Georgia, serif; overflow-wrap: anywhere; }
.chat-members { display: grid; gap: .55rem; margin: 0 0 1.25rem; padding: 0; list-style: none; }
.chat-member { display: flex; gap: .65rem; align-items: center; padding: .55rem; border-radius: .8rem; background: var(--color-surface-raised); }
.chat-member .avatar { width: 2.25rem; height: 2.25rem; }
.chat-details-actions { display: grid; gap: .6rem; }
.dialog-card { width: min(31rem, calc(100% - 2rem)); padding: 0; border: 1px solid var(--color-border); border-radius: 1.2rem; background: var(--color-surface); color: var(--color-text); box-shadow: 0 1.5rem 5rem var(--color-shadow); }
.dialog-card::backdrop { background: var(--color-overlay); }
.dialog-card form { display: grid; gap: 1rem; padding: 1.5rem; }
.dialog-card .friends-panel { display: grid; gap: 1rem; padding: 1.5rem; }
.friends-panel h3 { margin: 0 0 .45rem; font: 700 1rem Georgia, serif; }
.add-friend-form { padding: 0 !important; }
.add-friend-form > div { display: grid; grid-template-columns: 1fr auto; gap: .5rem; }
.friend-list { display: grid; gap: .45rem; }
.friend-row { display: flex; justify-content: space-between; gap: .75rem; align-items: center; padding: .65rem .75rem; border-radius: .7rem; background: var(--color-surface-raised); }
.friend-actions { display: flex; gap: .4rem; }
.friend-actions button { min-height: 2.25rem; padding: .4rem .7rem; }
.rumr-id-card { display: grid; gap: .15rem; padding: .85rem; border: 1px solid var(--color-border); border-radius: .8rem; background: var(--color-surface-soft); }
.rumr-id-card span, .rumr-id-card small { color: var(--color-text-muted); }
.rumr-id-card strong { color: var(--color-accent); font: 800 1.35rem ui-monospace, monospace; letter-spacing: .08em; }
.dialog-heading { display: flex; justify-content: space-between; align-items: center; }
.dialog-heading h2 { margin-bottom: 0; }
.dialog-card label { display: grid; gap: .4rem; font-weight: 700; }
.dialog-card input, .dialog-card select { width: 100%; padding: .7rem .8rem; border: 1px solid var(--color-border); border-radius: .65rem; background: var(--color-surface-raised); }
.dialog-card fieldset { min-width: 0; margin: 0; padding: .8rem; border: 1px solid var(--color-border); border-radius: .8rem; }
.people-list { max-height: 14rem; display: grid; gap: .4rem; overflow: auto; }
.people-list label { display: flex; grid-template-columns: auto 1fr; align-items: center; }
.people-list input { width: auto; }
.toast { position: fixed; right: 1rem; bottom: 1rem; max-width: 24rem; padding: .8rem 1rem; border: 1px solid var(--color-border); border-radius: .8rem; background: var(--color-surface-raised); box-shadow: 0 .8rem 2rem var(--color-shadow); z-index: 20; }
@media (max-width: 720px) {
    .app-shell { grid-template-columns: 5rem 1fr; }
    .app-shell.details-open { grid-template-columns: 5rem minmax(0, 1fr); }
    .chat-details { position: fixed; z-index: 10; inset: 0 0 0 auto; width: min(20rem, calc(100% - 5rem)); box-shadow: -1rem 0 2rem var(--color-shadow); }
    .sidebar-title, .chat-item-copy, .profile-chip-copy { display: none; }
    .rumr-search { padding-inline: .5rem; }
    .sidebar-header { justify-content: center; padding-inline: .5rem; }
    .profile-chip { justify-content: center; padding: .5rem; }
    .friends-chip { justify-content: center; padding: .5rem; }
    .add-friend-form > div { grid-template-columns: 1fr; }
}