/* =============================================================================
   Last Z — Tạo License (PWA)
   Màu đồng bộ với theme của tool (src/gui.py → THEME)
   ============================================================================= */

:root {
  --bg:            #0B1220;
  --bg-elevated:   #111A2E;
  --card:          #172033;
  --card-hover:    #1E2942;
  --border:        #2A3552;
  --border-strong: #3A4A6E;
  --input-bg:      #0F1729;

  --primary:       #14B8A6;
  --primary-hover: #0D9488;
  --primary-glow:  #5EEAD4;
  --info:          #3B82F6;
  --info-hover:    #2563EB;
  --success:       #22C55E;
  --danger:        #EF4444;
  --warning:       #F59E0B;
  --brand-gold:    #F0B429;

  --text:          #F1F5F9;
  --text-muted:    #94A3B8;
  --text-subtle:   #64748B;

  --radius:        16px;
  --radius-sm:     10px;
  --safe-b:        env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(900px 500px at 50% -10%, rgba(20,184,166,.10), transparent 60%),
    var(--bg);
}

.wrap {
  max-width: 560px;
  margin: 0 auto;
  padding: calc(env(safe-area-inset-top, 0px) + 12px) 16px
           calc(24px + var(--safe-b));
}

.hidden { display: none !important; }
.mono { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo,
        Consolas, "Liberation Mono", monospace; }

/* ── Header ──────────────────────────────────────────────────────────── */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.brand { display: flex; align-items: center; gap: 12px; }

.logo { width: 40px; height: 40px; flex: none; }

.brand h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.3px;
}

.brand .sub {
  margin: 1px 0 0;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: .4px;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  color: var(--text-muted);
  cursor: pointer;
  transition: .18s;
}
.icon-btn:active { transform: scale(.94); }
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); }

/* ── Card ────────────────────────────────────────────────────────────── */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 650;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}
.card-head h2 { margin: 0; }

.hint {
  margin: 0 0 14px;
  font-size: 13.5px;
  color: var(--text-muted);
}
.hint.center { text-align: center; margin: 14px 0 0; }
.hint b { color: var(--text); font-weight: 600; }

/* ── Field ───────────────────────────────────────────────────────────── */

.field {
  display: block;
  margin-bottom: 16px;
}

.lbl {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: .2px;
}

.req { color: var(--danger); }

.inp {
  width: 100%;
  padding: 13px 14px;
  font-size: 16px;          /* >=16px để iOS không tự zoom khi focus */
  font-family: inherit;
  color: var(--text);
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color .16s, box-shadow .16s;
}

.inp:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(20,184,166,.16);
}

.inp::placeholder { color: var(--text-subtle); }

.inp.mono { font-size: 14px; letter-spacing: .2px; }

.tip {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-subtle);
}
.tip b { color: var(--text-muted); font-weight: 600; }

/* ── Chips ───────────────────────────────────────────────────────────── */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: -6px 0 16px;
}

.chip {
  padding: 7px 13px;
  font-size: 13px;
  font-family: inherit;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: .16s;
}
.chip:active { transform: scale(.95); }
.chip:hover { border-color: var(--border-strong); color: var(--text); }
.chip.active {
  background: rgba(20,184,166,.14);
  border-color: var(--primary);
  color: var(--primary-glow);
}

/* ── Buttons ─────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 12px 18px;
  font-size: 15px;
  font-family: inherit;
  font-weight: 650;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: .16s;
  user-select: none;
}
.btn:active { transform: scale(.97); }
.btn:hover { background: var(--primary-hover); }

.btn-block { display: flex; width: 100%; }
.btn-lg    { padding: 16px 18px; font-size: 16px; }

.btn-info  { background: var(--info); }
.btn-info:hover { background: var(--info-hover); }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-ghost:hover { background: var(--bg-elevated); color: var(--text); }

.btn-sm { padding: 7px 12px; font-size: 13px; }

.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-top: 14px;
}

/* ── Message ─────────────────────────────────────────────────────────── */

.msg {
  margin: 10px 0 0;
  font-size: 13.5px;
  color: var(--text-muted);
  min-height: 20px;
}
.msg.err  { color: var(--danger); }
.msg.ok   { color: var(--success); }
.msg.warn { color: var(--warning); }

/* ── Result ──────────────────────────────────────────────────────────── */

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.rg {
  padding: 10px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-width: 0;
}

.rg span {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--text-subtle);
  margin-bottom: 3px;
}

.rg b {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.lic-box {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.lic-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 12px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.lic-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.lic-len {
  font-size: 11px;
  color: var(--text-subtle);
  font-family: ui-monospace, monospace;
}

.lic-out {
  display: block;
  width: 100%;
  padding: 12px;
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--primary-glow);
  background: var(--input-bg);
  border: none;
  outline: none;
  resize: vertical;
  word-break: break-all;
}

/* ── History ─────────────────────────────────────────────────────────── */

.history { display: flex; flex-direction: column; gap: 8px; }

.empty {
  margin: 0;
  padding: 14px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-subtle);
}

.hitem {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.hitem-l { min-width: 0; }

.hitem-l b {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hitem-l span {
  display: block;
  font-size: 11.5px;
  color: var(--text-subtle);
  font-family: ui-monospace, monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hitem-b { flex: none; display: flex; align-items: center; gap: 6px; }

.hbtn {
  padding: 6px 10px;
  font-size: 12px;
  font-family: inherit;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--card-hover);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}
.hbtn:active { transform: scale(.94); }
.hbtn:hover { color: var(--text); border-color: var(--border-strong); }

/* ── Modal ────────────────────────────────────────────────────────────── */

.modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.modal-back {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(2px);
}

.modal-box {
  position: relative;
  width: 100%;
  max-width: 560px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  padding: 18px 16px calc(18px + var(--safe-b));
  background: var(--card);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  animation: slideUp .22s ease;
}

@keyframes slideUp {
  from { transform: translateY(24px); opacity: .4; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}
.modal-head h2 { margin: 0; font-size: 16px; font-weight: 650; }

/* ── Danh bạ ─────────────────────────────────────────────────────────── */

.addr-btns {
  display: flex;
  gap: 8px;
  margin: -6px 0 16px;
}
.addr-btns .btn { flex: 1; }

.addr-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 14px;
}

.citem {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.citem.exp { border-color: rgba(245,158,11,.45); }
.citem.dead { border-color: rgba(239,68,68,.45); }

.citem-l { min-width: 0; }

.citem-l b {
  display: block;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.citem-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.badge {
  padding: 2px 7px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .3px;
  border-radius: 999px;
  background: var(--card-hover);
  color: var(--text-muted);
  border: 1px solid var(--border);
  white-space: nowrap;
}
.badge.ok    { background: rgba(34,197,94,.16);  color: #4ADE80; border-color: rgba(34,197,94,.4); }
.badge.warn  { background: rgba(245,158,11,.16); color: #FBBF24; border-color: rgba(245,158,11,.4); }
.badge.err   { background: rgba(239,68,68,.16);  color: #F87171; border-color: rgba(239,68,68,.4); }
.badge.info  { background: rgba(59,130,246,.16); color: #60A5FA; border-color: rgba(59,130,246,.4); }

.citem-sub {
  display: block;
  margin-top: 4px;
  font-size: 11.5px;
  color: var(--text-subtle);
  font-family: ui-monospace, monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.citem-note {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
  overflow-wrap: anywhere;
}

.citem-b { flex: none; display: flex; align-items: center; gap: 6px; }

/* ── Footer ──────────────────────────────────────────────────────────── */

.foot {
  margin-top: 18px;
  text-align: center;
  font-size: 11.5px;
  color: var(--text-subtle);
  word-break: break-all;
}

/* ── Toast ───────────────────────────────────────────────────────────── */

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + var(--safe-b));
  transform: translate(-50%, 20px);
  max-width: calc(100vw - 32px);
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--card-hover);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(0,0,0,.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 50;
  text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.ok   { background: #14532D; border-color: var(--success); }
.toast.err  { background: #7F1D1D; border-color: var(--danger); }

/* ── Desktop ─────────────────────────────────────────────────────────── */

@media (min-width: 600px) {
  .wrap { padding-top: 28px; }
  .card { padding: 22px; }
  .result-grid { grid-template-columns: repeat(3, 1fr); }

  /* Modal căn giữa thay vì trượt lên từ dưới. */
  .modal { align-items: center; }
  .modal-box {
    border-radius: var(--radius);
    border-bottom: 1px solid var(--border);
    max-height: 82vh;
  }
}