:root {
  --bg: #0f1729; --card: #1a2238; --card2: #232c47; --accent: #2dd4bf;
  --accent2: #38bdf8; --text: #e8edf6; --muted: #93a0bd; --danger: #f87171;
  --have: #34d399; --need: #fbbf24; --dup: #60a5fa; --border: #2c3654;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, system-ui, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.45;
}
.hidden { display: none !important; }
button {
  font: inherit; cursor: pointer; border: none; border-radius: 10px;
  padding: 10px 16px; background: var(--accent); color: #06231f; font-weight: 600;
}
button.ghost { background: var(--card2); color: var(--text); border: 1px solid var(--border); }
button.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
button:disabled { opacity: .5; cursor: not-allowed; }
input, select {
  font: inherit; width: 100%; padding: 11px 13px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--card2); color: var(--text);
}
label { font-size: 13px; color: var(--muted); display: block; margin: 10px 0 4px; }

/* Auth */
.auth-wrap { max-width: 420px; margin: 8vh auto; padding: 24px; }
.brand { text-align: center; margin-bottom: 28px; }
.brand h1 { font-size: 28px; }
.brand p { color: var(--accent); font-weight: 600; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
.row { display: flex; gap: 10px; }
.row > * { flex: 1; }
.link { color: var(--accent2); text-align: center; display: block; margin-top: 16px; cursor: pointer; font-size: 14px; }
.err { color: var(--danger); font-size: 14px; margin-top: 10px; min-height: 18px; }

/* App shell */
header.bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; background: var(--card); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
header.bar .title { font-weight: 700; }
header.bar .right { display: flex; align-items: center; gap: 12px; }
.badge { background: var(--card2); border: 1px solid var(--border); padding: 5px 10px; border-radius: 20px; font-size: 13px; }
.badge b { color: var(--accent); }
.inbox-btn { position: relative; font-size: 16px; padding: 8px 12px; }
.inbox-badge { position: absolute; top: -6px; right: -6px; background: var(--have); color: #06231f; font-weight: 800; font-size: 11px; min-width: 18px; height: 18px; border-radius: 10px; padding: 0 5px; display: flex; align-items: center; justify-content: center; box-shadow: 0 0 0 2px var(--card); }
.newdot { color: var(--have); font-weight: 800; }
nav.tabs { display: flex; gap: 4px; padding: 8px 12px; background: var(--card); border-bottom: 1px solid var(--border); overflow-x: auto; }
nav.tabs button { background: transparent; color: var(--muted); border-radius: 8px; padding: 8px 14px; white-space: nowrap; }
nav.tabs button.active { background: var(--card2); color: var(--text); }
main { max-width: 1000px; margin: 0 auto; padding: 18px; }
h2 { font-size: 20px; margin-bottom: 12px; }
.muted { color: var(--muted); font-size: 14px; }

/* Album */
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; margin-bottom: 14px; }
.toolbar .field { min-width: 120px; }
.toolbar label { margin: 0 0 4px; }
.summary { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 10px 14px; margin-bottom: 14px; font-size: 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(78px, 1fr)); gap: 7px; }
.sticker {
  background: var(--card); border: 1px solid var(--border); border-radius: 9px;
  padding: 7px 4px; text-align: center; cursor: pointer; user-select: none;
  font-size: 11px; transition: transform .05s;
}
.sticker:active { transform: scale(.95); }
.sticker .num { font-weight: 700; font-size: 12px; }
.sticker .nm { color: var(--muted); font-size: 9px; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sticker { position: relative; }
.sticker.HAVE { background: rgba(52,211,153,.20); border-color: var(--have); }
.sticker.NEED { background: rgba(251,191,36,.16); border-color: var(--need); }
.sticker.DUP  { background: rgba(96,165,250,.20); border-color: var(--dup); }
.sticker .cnt { position: absolute; top: -7px; right: -6px; background: var(--dup); color: #06231f; font-weight: 700; font-size: 11px; border-radius: 10px; padding: 1px 6px; }
.sticker .minus { position: absolute; bottom: -8px; left: 50%; transform: translateX(-50%); background: var(--danger); color: #fff; border-radius: 50%; width: 20px; height: 20px; padding: 0; font-size: 15px; line-height: 1; display: flex; align-items: center; justify-content: center; }
.legend { display: flex; gap: 14px; flex-wrap: wrap; margin: 10px 0; font-size: 13px; }
.legend span::before { content: '■ '; }
.lg-have::before { color: var(--have); } .lg-need::before { color: var(--need); } .lg-dup::before { color: var(--dup); }

/* Matches & exchanges list */
.item { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; margin-bottom: 10px; display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.item .meta { font-size: 13px; color: var(--muted); }
.pill { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 12px; background: var(--card2); border: 1px solid var(--border); }
.give { color: var(--dup); } .get { color: var(--have); }
.itembox { margin-bottom: 14px; }
.itemline { margin: 6px 0; line-height: 2.1; }

/* Exchange detail */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 720px) { .detail-grid { grid-template-columns: 1fr; } .row { flex-direction: column; } }
.chat { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px; height: 320px; display: flex; flex-direction: column; }
.chat .msgs { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; padding-right: 4px; }
.msg { max-width: 80%; padding: 8px 11px; border-radius: 12px; font-size: 14px; }
.msg.me { align-self: flex-end; background: var(--accent); color: #06231f; }
.msg.them { align-self: flex-start; background: var(--card2); }
.chat .compose { display: flex; gap: 8px; margin-top: 8px; }
.addr-box { background: var(--card2); border: 1px dashed var(--accent); border-radius: 10px; padding: 12px; font-size: 14px; line-height: 1.7; }
.status-line { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0; }
.ok { color: var(--have); } .pending { color: var(--muted); }
.livedot { font-size: 12px; color: var(--have); font-weight: 600; vertical-align: middle; animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
.typing { min-height: 18px; font-size: 13px; color: var(--accent2); font-style: italic; padding: 2px 4px; }

/* Admin stat kartice */
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin-top: 12px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.stat-acc { border-color: var(--accent); }
.statnum { font-size: 28px; font-weight: 800; color: var(--accent); }
.statlbl { font-size: 13px; color: var(--muted); margin-top: 2px; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #06231f; padding: 12px 22px; border-radius: 30px; font-weight: 600; z-index: 100; }

/* Leteći prozor (uputstvo) */
.overlay { position: fixed; inset: 0; background: rgba(5,9,18,.7); backdrop-filter: blur(3px); display: flex; align-items: center; justify-content: center; z-index: 200; padding: 18px; overflow-y: auto; }
.guide-card { background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 24px; max-width: 460px; width: 100%; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.guide-card h2 { margin-bottom: 6px; }
.gsub { color: var(--accent); font-weight: 700; font-size: 14px; margin: 16px 0 8px; }
.gstep { display: flex; align-items: flex-start; gap: 12px; margin: 8px 0; font-size: 15px; }
.gnum { flex: 0 0 26px; height: 26px; border-radius: 50%; background: var(--accent); color: #06231f; font-weight: 700; display: flex; align-items: center; justify-content: center; font-size: 14px; }
.gnote { background: var(--card2); border-left: 3px solid var(--accent2); border-radius: 8px; padding: 9px 12px; margin: 6px 0; font-size: 14px; line-height: 1.5; color: var(--text); }