:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel2: #273449;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --line: #334155;
  --green: #22c55e;
  --red: #ef4444;
  --accent: #38bdf8;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: calc(56px + env(safe-area-inset-bottom));
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}

/* --- Üst bar: iki satır (ana + döviz/para birimi) --- */
.topbar {
  background: #0b1220; position: sticky; top: 0; z-index: 10;
  border-bottom: 1px solid var(--line);
  padding: 10px 16px calc(10px) 16px;
  padding-top: calc(10px + env(safe-area-inset-top));
  padding-left: calc(16px + env(safe-area-inset-left));
  padding-right: calc(16px + env(safe-area-inset-right));
}
.bar-main { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.bar-sub { display: flex; align-items: center; gap: 10px; margin-top: 8px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 9px; min-width: 0; }
.brand h1 { font-size: 17px; margin: 0; white-space: nowrap; }
.brand .sub { font-size: 11px; color: var(--muted); display: block; }
.conn-wrap { display: flex; align-items: center; gap: 7px; font-size: 12px; color: var(--muted); white-space: nowrap; }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex: none; }
.dot.online { background: var(--green); box-shadow: 0 0 8px var(--green); }
.dot.offline { background: var(--red); }

.fx { display: flex; align-items: center; gap: 10px; padding: 5px 10px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; flex: 1 1 auto; min-width: 0; }
.fx-item { font-size: 13px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.fx-item b { color: var(--accent); font-weight: 600; margin-right: 2px; }
.fx-date { color: var(--muted); font-size: 10px; margin-left: auto; white-space: nowrap; }
.curr { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; flex: none; }
.curr button { background: var(--panel); color: var(--muted); border: 0; padding: 7px 14px; font-size: 13px; font-weight: 600; cursor: pointer; min-height: 36px; }
.curr button + button { border-left: 1px solid var(--line); }
.curr button.active { background: var(--accent); color: #04222f; }

.filters { display: flex; gap: 8px; padding: 12px 16px; flex-wrap: wrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.chip {
  border: 1px solid var(--line); background: var(--panel); color: var(--text);
  padding: 8px 15px; border-radius: 999px; font-size: 13px; cursor: pointer;
  white-space: nowrap; min-height: 38px;
}
.chip.active { background: var(--accent); color: #04222f; border-color: var(--accent); font-weight: 600; }

main { padding: 0 16px; max-width: 1100px; margin: 0 auto; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px; cursor: pointer; transition: transform .08s, border-color .15s;
}
.card:hover { transform: translateY(-2px); }
.card.sel { border-color: var(--accent); }
.card .cat { font-size: 10px; text-transform: uppercase; letter-spacing: .5px; }
.card .name { font-size: 14px; font-weight: 600; margin: 4px 0 8px; line-height: 1.25; min-height: 34px; }
.card .price { font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }
.card .unit { font-size: 11px; color: var(--muted); margin-left: 4px; }
.card .chg { font-size: 13px; font-weight: 600; margin-top: 6px; font-variant-numeric: tabular-nums; }
.up { color: var(--green); } .down { color: var(--red); }
.flash-up { animation: fu .6s; } .flash-down { animation: fd .6s; }
@keyframes fu { 0% { background: rgba(34,197,94,.18); } 100% { background: var(--panel); } }
@keyframes fd { 0% { background: rgba(239,68,68,.18); } 100% { background: var(--panel); } }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin: 16px 0; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.panel-head h2 { font-size: 15px; margin: 0; }
#chart { width: 100% !important; height: 280px !important; }
@media (max-width: 640px) { #chart { height: 220px !important; } }
.range { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 8px; }
select, .btn {
  background: var(--panel2); color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 12px; font-size: 13px; cursor: pointer; text-decoration: none;
}
.btn { background: var(--accent); color: #04222f; border-color: var(--accent); font-weight: 600; }
.btn.ghost { background: transparent; color: var(--text); }
.report-actions { display: flex; gap: 8px; }
.hint { color: var(--muted); font-size: 12px; margin: 6px 0 0; }

footer {
  position: fixed; bottom: 0; left: 0; right: 0; display: flex; justify-content: space-between;
  gap: 10px;
  padding: 8px 16px; padding-bottom: calc(8px + env(safe-area-inset-bottom));
  background: #0b1220; border-top: 1px solid var(--line);
  font-size: 12px; color: var(--muted);
}
footer span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ===================== MOBİL (≤640px) ===================== */
@media (max-width: 640px) {
  .brand h1 { font-size: 16px; }
  .brand .sub { font-size: 10px; }
  .conn-wrap span:not(.dot) { display: none; } /* "canlı" yazısını gizle, nokta yeter */
  #installBtn { display: inline-block; }

  .bar-sub { gap: 8px; }
  .fx { gap: 8px; padding: 6px 9px; }
  .fx-item { font-size: 12.5px; }
  .fx-date { display: none; }                  /* tarih dar ekranda gizli */
  .curr button { padding: 8px 13px; }

  main { padding: 0 12px; }
  /* Telefonda 2 sütun kart */
  .cards { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .card { padding: 12px; border-radius: 12px; }
  .card .name { font-size: 13px; min-height: 32px; }
  .card .price { font-size: 19px; }
  .card:hover { transform: none; }             /* dokunmatikte hover sıçraması yok */

  .panel { padding: 13px; margin: 12px 0; border-radius: 12px; }
  .panel-head { gap: 8px; }
  .range { width: 100%; }
  .range select { flex: 1; }
  .report-actions { width: 100%; }
  .report-actions .btn { flex: 1; text-align: center; padding: 11px; }
}

/* Çok dar telefonlar (≤360px): kartlar tek sütun */
@media (max-width: 360px) {
  .cards { grid-template-columns: 1fr; }
}

/* İşaretçisi dokunmatik olan cihazlarda hover transform'unu kapat */
@media (hover: none) {
  .card:hover { transform: none; }
}