:root {
  --bg: #0f172a; --bg-elev: #1e293b; --bg-elev2: #273449;
  --text: #e2e8f0; --muted: #94a3b8; --accent: #38bdf8; --accent-strong: #0ea5e9;
  --green: #22c55e; --amber: #f59e0b; --red: #ef4444; --border: #334155;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent; overscroll-behavior: none;
}
.hidden { display: none !important; }
button { font: inherit; cursor: pointer; border-radius: 10px; border: 1px solid var(--border); background: var(--accent); color: #04283a; font-weight: 700; padding: .6rem .9rem; }
button.ghost { background: var(--bg-elev2); color: var(--text); }
button.ghost.danger { color: var(--red); border-color: rgba(239,68,68,.4); }
button.danger { background: var(--bg-elev2); color: var(--red); border-color: var(--red); }
button.small { padding: .35rem .6rem; font-size: .85rem; }
input { width: 100%; padding: .6rem .7rem; margin: .25rem 0; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-elev2); color: var(--text); font: inherit; }
input[type=checkbox] { width: auto; }
.error { color: var(--red); font-size: .85rem; min-height: 1.1em; margin: .3rem 0 0; }
.muted { color: var(--muted); }

/* Buttons */
.btn { background: var(--bg-elev2); color: var(--text); border: 1px solid var(--border); border-radius: 10px; padding: .5rem .7rem; font-weight: 600; }
.btn.primary, .btn-primary { background: var(--accent); color: #04283a; border-color: var(--accent); font-weight: 700; }
.btn.sm { padding: .35rem .55rem; font-size: .82rem; }
.btn.danger { color: var(--red); border-color: rgba(239,68,68,.45); background: var(--bg-elev2); }
.btn.ok { color: var(--green); border-color: rgba(34,197,94,.45); background: var(--bg-elev2); }
.ghost.small { padding: .35rem .6rem; font-size: .85rem; }
.back { background: var(--bg-elev2); color: var(--text); border: 1px solid var(--border); padding: .4rem .7rem; margin-bottom: .6rem; }

/* Auth */
.screen.center { min-height: 100vh; min-height: 100dvh; display: grid; place-items: center; padding: 1rem; }
.card { width: 100%; max-width: 380px; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; text-align: center; }
.card h1 { margin: 0 0 .2rem; }
.tabs { display: flex; gap: .5rem; margin: 1rem 0; }
.tab { flex: 1; background: var(--bg-elev2); color: var(--muted); }
.tab.active { background: var(--accent); color: #04283a; }
form { display: flex; flex-direction: column; gap: .1rem; }
form button[type=submit] { margin-top: .5rem; }

/* App shell */
#screen-app { display: flex; flex-direction: column; height: 100vh; height: 100dvh; overflow: hidden; }
.app-header { flex: none; display: flex; align-items: center; justify-content: space-between; padding: .75rem 1rem; padding-top: max(.75rem, env(safe-area-inset-top)); background: var(--bg); border-bottom: 1px solid var(--border); }
.app-title { font-weight: 700; cursor: pointer; }
.header-right { display: flex; align-items: center; gap: .5rem; }
.chip { font-size: .8rem; color: var(--muted); background: var(--bg-elev2); padding: .2rem .55rem; border-radius: 999px; }
.icon-btn { width: 38px; height: 38px; padding: 0; display: grid; place-items: center; background: var(--bg-elev2); color: var(--text); border: 1px solid var(--border); border-radius: 10px; }
.page { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; padding: 1rem; width: 100%; max-width: 640px; margin: 0 auto; }

.list-head { display: flex; align-items: center; justify-content: space-between; gap: .5rem; margin-bottom: .4rem; }
.list-head h2 { margin: 0; font-size: 1.25rem; }
.detail-head { display: flex; align-items: center; justify-content: space-between; gap: .5rem; margin-bottom: .3rem; }
.detail-head h2 { margin: 0; font-size: 1.25rem; }
.section-title { font-size: .95rem; color: var(--muted); margin: 1rem 0 .5rem; }
.row.wrap.actions { flex-wrap: wrap; background: none; border: none; padding: 0; gap: .4rem; }

/* Rows */
.row { display: flex; align-items: center; gap: .6rem; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 12px; padding: .7rem .8rem; margin-bottom: .5rem; }
.row .grow { flex: 1; min-width: 0; }
.row .title { font-weight: 600; }
.row .sub { color: var(--muted); font-size: .82rem; }
.row.clickable { cursor: pointer; }
.badge-arch { font-size: .7rem; color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 0 .4rem; margin-left: .3rem; }
.empty { text-align: center; color: var(--muted); padding: 2rem 1rem; }

/* Toast */
.toast { position: fixed; left: 50%; bottom: 1.5rem; transform: translateX(-50%); background: var(--bg-elev2); color: var(--text); padding: .6rem 1rem; border-radius: 10px; border: 1px solid var(--border); z-index: 40; transition: opacity .2s; }
.toast.err { color: var(--red); border-color: var(--red); }
.toast.hidden { opacity: 0; pointer-events: none; }

/* Modal */
.modal { position: fixed; inset: 0; z-index: 30; background: rgba(0,0,0,.6); display: grid; place-items: center; padding: 1rem; }
.modal-card { width: 100%; max-width: 380px; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 16px; padding: 1.25rem; text-align: center; max-height: calc(100dvh - 2rem); overflow-y: auto; }
.modal-card.modal-wide { max-width: 480px; }
.modal-card h2 { margin: 0 0 .5rem; font-size: 1.15rem; }
.modal-actions { display: flex; gap: .5rem; margin-top: .8rem; }
.modal-actions button { flex: 1; }
.qr-box { display: grid; place-items: center; margin: .5rem 0; background: #fff; padding: .5rem; border-radius: 10px; }
.qr-box img { width: 200px; height: 200px; }
.invite-url { font-size: .8rem; word-break: break-all; color: var(--muted); }

/* Form bits */
.lbl { display: block; text-align: left; font-size: .78rem; color: var(--muted); margin: .6rem 0 .2rem; }
.inp { width: 100%; }
.sel { width: 100%; padding: .55rem .6rem; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-elev2); color: var(--text); font: inherit; margin: .25rem 0; }

/* Toggle switch */
.toggle { display: flex; align-items: center; justify-content: space-between; gap: .6rem; margin: .7rem 0 .2rem; text-align: left; }
.t-label { display: flex; flex-direction: column; font-size: .9rem; }
.t-label small { color: var(--muted); font-size: .75rem; font-weight: 400; }
.switch { position: relative; width: 46px; height: 26px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch .sl { position: absolute; inset: 0; background: var(--bg-elev2); border: 1px solid var(--border); border-radius: 999px; transition: .15s; }
.switch .sl::before { content: ""; position: absolute; width: 20px; height: 20px; left: 2px; top: 2px; background: var(--muted); border-radius: 50%; transition: .15s; }
.switch input:checked + .sl { background: rgba(56,189,248,.3); border-color: var(--accent); }
.switch input:checked + .sl::before { transform: translateX(20px); background: var(--accent); }

/* People picker */
.ppl-list { max-height: 240px; overflow-y: auto; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); padding: 4px; margin-top: 8px; }
.ppl-row { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 8px; cursor: pointer; font-size: 15px; }
.ppl-row:hover { background: var(--bg-elev2); }
.ppl-row input { width: 18px; height: 18px; flex: 0 0 auto; accent-color: var(--accent); }
.ppl-row.muted { opacity: .55; }
.ppl-tag { margin-left: auto; font-size: 11px; color: var(--muted); }

/* Drawer */
.drawer { position: fixed; inset: 0; z-index: 60; }
.drawer.hidden { display: none; }
.drawer-scrim { position: absolute; inset: 0; background: rgba(0,0,0,.5); }
.drawer-panel { position: absolute; top: 0; left: 0; bottom: 0; width: 82%; max-width: 320px; background: var(--bg-elev); border-right: 1px solid var(--border); padding: 18px 16px; overflow-y: auto; box-shadow: 6px 0 30px rgba(0,0,0,.4); animation: drawer-in .16s ease; }
@keyframes drawer-in { from { transform: translateX(-100%); } to { transform: translateX(0); } }
.drawer-head { font-weight: 800; font-size: 18px; margin-bottom: 14px; }
.drawer-label { font-size: 11.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 16px 0 6px; font-weight: 700; }
.drawer-item { display: flex; align-items: center; gap: 10px; width: 100%; text-align: left; text-decoration: none; padding: 12px; border-radius: 10px; background: var(--bg-elev2); border: 1px solid var(--border); color: var(--text); font-weight: 600; font-size: 15px; margin-bottom: 8px; cursor: pointer; }
.drawer-item:active { background: var(--border); }
.drawer-item.current { border-color: var(--accent); background: #12314a; }
.drawer-item.danger { color: var(--red); border-color: rgba(239,68,68,.4); }
.drawer-user { font-size: 13px; color: var(--muted); padding: 4px 2px 8px; }

/* ===== List view ===== */
.add-bar { display: flex; gap: .4rem; align-items: center; }
.add-bar .inp { flex: 1; }
.add-typed { white-space: nowrap; flex: none; }
.rem-toggle { display: flex; align-items: center; gap: .5rem; font-size: .85rem; color: var(--muted); margin: .6rem 0; cursor: pointer; }
.rem-toggle input { width: 18px; height: 18px; accent-color: var(--accent); margin: 0; }

.cat-group { margin-top: 1rem; }
.cat-group.hidden { display: none; }
.cat-title { font-size: .82rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 700; margin-bottom: .35rem; padding-left: .2rem; }

.item { display: flex; align-items: center; gap: .55rem; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 12px; padding: .5rem .6rem; margin-bottom: .4rem; }
.item.hidden { display: none; }
.item.bought { opacity: .55; }
.item.bought .item-name { text-decoration: line-through; }
.item.pending { border-left: 3px solid var(--amber); }
.item-check { display: flex; align-items: center; flex: none; }
.item-check input { width: 22px; height: 22px; accent-color: var(--green); margin: 0; }
.pend-dot { flex: none; width: 22px; text-align: center; }
.item-main { flex: 1; min-width: 0; }
.item-name { font-weight: 600; word-break: break-word; }
.who { display: block; font-size: .72rem; color: var(--accent); margin-top: .1rem; }
.item-qty { display: flex; align-items: center; gap: .25rem; flex: none; }
.qbtn { width: 30px; height: 30px; padding: 0; display: grid; place-items: center; background: var(--bg-elev2); color: var(--text); border: 1px solid var(--border); border-radius: 8px; font-weight: 700; }
.qbtn.ok { color: var(--green); border-color: rgba(34,197,94,.5); }
.qbtn.no { color: var(--red); border-color: rgba(239,68,68,.5); }
.qval { min-width: 24px; text-align: center; font-variant-numeric: tabular-nums; }
.qinp { width: 54px; margin: 0; padding: .3rem; text-align: right; }
.unitsel { padding: .3rem .2rem; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-elev2); color: var(--text); font: inherit; font-size: .85rem; }
.item-menu { width: 30px; height: 30px; padding: 0; display: grid; place-items: center; background: var(--bg-elev2); color: var(--muted); border: 1px solid var(--border); border-radius: 8px; flex: none; }