:root {
  --bg:      #0c1220;
  --bg2:     #111827;
  --bg3:     #1a2235;
  --bg4:     #1f2a40;
  --border:  #263044;
  --border2: #2e3d58;
  --text:    #c9d5e8;
  --text-sub:#8fa3c0;
  --text-dim:#556070;
  --blue:    #3b82f6;
  --blue-dk: #2563eb;
  --teal:    #14b8a6;
  --green:   #10b981;
  --amber:   #f59e0b;
  --red:     #f87171;
  --radius:  9px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', sans-serif;
  background: var(--bg); color: var(--text);
  height: 100vh; overflow: hidden; font-size: 13px;
}
.hidden { display: none !important; }
.text-green  { color: var(--green); }
.text-amber  { color: var(--amber); }
.text-red    { color: var(--red); }
.hint        { color: var(--text-dim); font-size: 0.8em; }

/* ─── Auth Modal ─────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(6,10,20,0.75);
  backdrop-filter: blur(6px); display: flex; align-items: center;
  justify-content: center; z-index: 100;
}
.modal-card {
  background: var(--bg2); border: 1px solid var(--border2);
  border-radius: 14px; padding: 30px 34px; width: 340px; position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.modal-close {
  position: absolute; top: 12px; right: 14px; background: none; border: none;
  color: var(--text-sub); cursor: pointer; font-size: 0.9rem;
  padding: 4px 6px; border-radius: 4px; transition: color .15s;
}
.modal-close:hover { color: var(--text); }
.modal-logo { font-size: 1.05rem; font-weight: 700; color: var(--blue); margin-bottom: 18px; letter-spacing: 0.3px; }

.auth-tabs { display: flex; margin-bottom: 18px; border-bottom: 1px solid var(--border); }
.tab-btn { flex: 1; padding: 8px; background: none; border: none; color: var(--text-sub); cursor: pointer; font-size: 0.88rem; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all .2s; }
.tab-btn.active { color: var(--text); border-bottom-color: var(--blue); }

.auth-form { display: flex; flex-direction: column; gap: 13px; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: 0.8rem; color: var(--text-sub); }
.form-group input {
  background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text); padding: 9px 12px; font-size: 0.88rem; outline: none; transition: border .2s;
}
.form-group input:focus { border-color: var(--blue); }
.form-error { color: var(--red); font-size: 0.8rem; min-height: 16px; }
.btn-primary {
  background: var(--blue); color: #fff; border: none; border-radius: var(--radius);
  padding: 10px; font-size: 0.88rem; font-weight: 600; cursor: pointer; transition: background .15s;
}
.btn-primary:hover { background: var(--blue-dk); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

/* ─── Topbar ─────────────────────────────────────────────────────────────────── */
.topbar {
  height: 46px; background: var(--bg2); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 18px; flex-shrink: 0;
}
.topbar-left { display: flex; align-items: center; gap: 20px; }
.logo-text { font-size: 0.92rem; font-weight: 700; color: var(--blue); letter-spacing: 0.4px; }
.top-nav { display: flex; gap: 2px; }
.top-nav-item {
  padding: 5px 11px; border-radius: 6px; color: var(--text-sub);
  text-decoration: none; font-size: 0.83rem; transition: all .15s;
}
.top-nav-item:hover { color: var(--text); background: var(--bg3); }
.top-nav-item.active { color: var(--text); background: var(--bg3); font-weight: 500; }
.topbar-right { display: flex; align-items: center; gap: 6px; }
#guest-btns { display: flex; gap: 6px; }
#user-btns  { display: flex; align-items: center; gap: 6px; }
.user-tag { font-size: 0.78rem; color: var(--text-sub); padding: 0 6px; }
.btn-top {
  background: var(--bg3); border: 1px solid var(--border); color: var(--text-sub);
  padding: 4px 10px; border-radius: 6px; cursor: pointer; font-size: 0.77rem; transition: all .15s;
}
.btn-top:hover { color: var(--text); border-color: var(--border2); }
.btn-auth { color: var(--text); }
.btn-register { background: var(--blue); border-color: var(--blue); color: #fff; font-weight: 500; }
.btn-register:hover { background: var(--blue-dk); border-color: var(--blue-dk); color: #fff; }
.btn-top-refresh:hover { border-color: var(--teal); color: var(--teal); }
.btn-top-logout:hover  { border-color: var(--red);  color: var(--red); }

/* ─── Stats Bar ─────────────────────────────────────────────────────────────── */
.statsbar {
  background: var(--bg2); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 7px 18px; gap: 8px;
  flex-shrink: 0; flex-wrap: wrap;
}
.sbar-card {
  display: flex; align-items: center; gap: 7px;
  border: 1px solid var(--border); border-radius: 8px;
  padding: 5px 13px; white-space: nowrap; background: var(--bg3);
}
.sbar-card.card-gwei  { border-color: rgba(245,158,11,0.3); background: rgba(245,158,11,0.05); }
.sbar-card.card-today { border-color: rgba(16,185,129,0.3); background: rgba(16,185,129,0.05); }
.sbar-card.card-3d    { border-color: rgba(59,130,246,0.3); background: rgba(59,130,246,0.05); }
.sbar-card.card-7d    { border-color: rgba(59,130,246,0.25);background: rgba(59,130,246,0.04); }
.sbar-card.card-30d   { border-color: rgba(59,130,246,0.2); background: rgba(59,130,246,0.03); }
.sbar-label { font-size: 0.71rem; color: var(--text-sub); }
.sbar-val   { font-size: 0.97rem; font-weight: 700; }
.sbar-unit  { font-size: 0.68rem; color: var(--text-dim); }
.sbar-card.card-gwei  .sbar-val { color: var(--amber); }
.sbar-card.card-today .sbar-val { color: var(--green); }
.sbar-card.card-3d  .sbar-val,
.sbar-card.card-7d  .sbar-val,
.sbar-card.card-30d .sbar-val  { color: var(--blue); }

/* ─── Layout ─────────────────────────────────────────────────────────────────── */
#app { display: flex; flex-direction: column; height: 100vh; }
.main-content { flex: 1; overflow: hidden; min-height: 0; }
.view { display: none; height: 100%; }
.view.active { display: flex; }

/* ─── Calendar View ──────────────────────────────────────────────────────────── */
#view-calendar { flex-direction: row; gap: 0; }

/* Left panel wrapper */
.cal-panel {
  width: 700px; flex-shrink: 0; display: flex; flex-direction: column;
  padding: 16px 14px 16px 16px; gap: 12px; background: var(--bg);
  border-right: 1px solid var(--border); overflow: hidden;
}

/* Calendar box */
.cal-box {
  background: var(--bg2); border: 1px solid var(--border2);
  border-radius: 14px; padding: 18px 16px 14px; flex-shrink: 0;
}

.cal-nav {
  display: flex; align-items: center; gap: 6px; margin-bottom: 14px;
}
.cal-nav-btn {
  background: none; border: none; color: var(--text-sub); cursor: pointer;
  font-size: 1.6rem; width: 36px; height: 36px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center; transition: all .15s;
}
.cal-nav-btn:hover { background: var(--bg3); color: var(--text); }
#cal-month-label { flex: 1; text-align: center; font-size: 1.15rem; font-weight: 700; color: var(--text); }
.cal-nav-today {
  background: none; border: 1px solid var(--border); color: var(--text-sub);
  padding: 5px 12px; border-radius: 6px; cursor: pointer; font-size: 0.8rem; transition: all .15s;
}
.cal-nav-today:hover { border-color: var(--blue); color: var(--blue); }

.cal-weekdays {
  display: grid; grid-template-columns: repeat(7, 1fr);
  text-align: center; color: var(--text-dim); font-size: 0.85rem;
  margin-bottom: 6px;
}
.cal-weekdays div { padding: 6px 0; }

.cal-days { display: grid; grid-template-columns: repeat(7, 1fr); gap: 5px; }

.cal-day {
  height: 86px; border-radius: 10px; border: 1px solid transparent;
  cursor: pointer; transition: all .12s; display: flex; flex-direction: column;
  align-items: center; justify-content: center; position: relative;
}
.cal-day:hover:not(.other-month) { background: var(--bg4); border-color: var(--border); }
.cal-day.other-month { opacity: 0.18; cursor: default; pointer-events: none; }

.cal-day.today { border-color: var(--blue) !important; }
.cal-day.today .day-num { color: var(--blue); font-weight: 700; }

.cal-day.selected { background: var(--blue) !important; border-color: var(--blue) !important; }
.cal-day.selected .day-num { color: #fff !important; font-weight: 700; }
.cal-day.selected .day-dot { background: rgba(255,255,255,0.6) !important; }
.cal-day.selected .day-count { color: rgba(255,255,255,0.85) !important; }

.cal-day.has-data:not(.selected) { background: var(--bg3); }
.cal-day.overdue:not(.selected)  { background: rgba(248,113,113,0.07); border-color: rgba(248,113,113,0.15); }

.day-num {
  font-size: 1.1rem; color: var(--text-sub); line-height: 1; font-weight: 500;
}
.cal-day.has-data:not(.selected) .day-num { color: var(--text); }

.day-dot { width: 6px; height: 6px; border-radius: 50%; margin-top: 5px; }
.dot-mint    { background: var(--blue); }
.dot-overdue { background: var(--red); }

.day-count {
  font-size: 0.72rem; font-weight: 700; line-height: 1;
  position: absolute; top: 5px; right: 7px;
  color: var(--blue);
}
.cal-day.overdue:not(.selected) .day-count { color: var(--red); }

/* Calendar summary stats */
.cal-summary {
  margin-top: auto; background: var(--bg2); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 18px; display: grid;
  grid-template-columns: repeat(4, 1fr); gap: 8px; flex-shrink: 0;
}
.sum-item { display: flex; flex-direction: column; gap: 4px; }
.sum-label { font-size: 0.72rem; color: var(--text-dim); }
.sum-val   { font-size: 1rem; font-weight: 700; color: var(--text); }

/* ─── Right: List Panel ──────────────────────────────────────────────────────── */
.list-panel {
  flex: 1; display: flex; flex-direction: column;
  overflow: hidden; padding: 14px 14px 14px 10px; min-width: 0;
}
.list-box {
  flex: 1; display: flex; flex-direction: column; overflow: hidden;
  border: 1px solid var(--border2); border-radius: 12px; background: var(--bg2); min-height: 0;
}
.list-header {
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  flex-shrink: 0;
}
.list-tabs { display: flex; gap: 4px; }
.list-tab {
  background: none; border: 1px solid transparent; color: var(--text-sub);
  padding: 3px 12px; border-radius: 6px; cursor: pointer; font-size: 0.8rem; transition: all .15s;
}
.list-tab:hover { color: var(--text); background: var(--bg3); }
.list-tab.active { background: var(--bg3); border-color: var(--border); color: var(--text); font-weight: 500; }
.list-stats { display: flex; gap: 16px; font-size: 0.78rem; color: var(--text-sub); }
.list-stats strong { color: var(--text); }

.list-table-wrap { flex: 1; overflow-y: auto; min-height: 0; }
.list-table { width: 100%; border-collapse: collapse; font-size: 0.79rem; }
.list-table th {
  text-align: left; padding: 7px 10px; color: var(--text-dim); font-weight: 500;
  border-bottom: 1px solid var(--border); position: sticky; top: 0;
  background: var(--bg2); z-index: 1; font-size: 0.71rem; letter-spacing: 0.3px;
}
.list-table td { padding: 6px 10px; border-bottom: 1px solid rgba(38,48,68,0.6); vertical-align: middle; }
.list-table tr:last-child td { border-bottom: none; }
.list-table tr:hover td { background: var(--bg3); }

.status-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; margin-right: 5px; vertical-align: middle; }
.s-ok      { background: var(--green); }
.s-overdue { background: var(--red); }
.s-pending { background: var(--amber); }
.s-none    { background: var(--text-dim); }

.addr-mono { font-family: 'Menlo', 'Consolas', monospace; font-size: 0.74rem; color: var(--text-sub); }
.addr-link { color: var(--text-sub); text-decoration: none; transition: color .15s; }
.addr-link:hover { color: var(--blue); text-decoration: underline; }
.xen-val   { color: var(--teal); font-weight: 600; }

.empty-tip { text-align: center; padding: 60px 20px; color: var(--text-sub); }
.empty-icon { font-size: 2rem; margin-bottom: 10px; }

/* ─── Pagination ─────────────────────────────────────────────────────────────── */
.pg-btn {
  background: var(--bg3); border: 1px solid var(--border); color: var(--text-sub);
  padding: 3px 12px; border-radius: 5px; cursor: pointer; font-size: 0.74rem;
  margin: 0 6px; transition: all .15s;
}
.pg-btn:hover { border-color: var(--blue); color: var(--blue); }

/* ─── Import View ────────────────────────────────────────────────────────────── */
#view-import { flex-direction: column; align-items: flex-start; padding: 24px; overflow-y: auto; }
.import-wrap { width: 100%; max-width: 680px; display: flex; flex-direction: column; gap: 14px; }
.view-title { font-size: 1.05rem; font-weight: 600; }
.import-format {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px;
}
.import-format p { font-size: 0.82rem; color: var(--text-sub); margin-bottom: 8px; }
.import-format pre {
  font-family: monospace; font-size: 0.78rem; color: var(--teal);
  background: var(--bg3); padding: 8px 10px; border-radius: 6px;
}
#import-textarea {
  background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text); padding: 12px; font-family: monospace; font-size: 0.8rem;
  resize: vertical; outline: none; transition: border .2s; width: 100%;
}
#import-textarea:focus { border-color: var(--blue); }
.import-actions { display: flex; align-items: center; justify-content: space-between; }
.import-result {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px; font-size: 0.82rem;
}
.import-result.success { border-color: var(--green); color: var(--green); }
.import-result.error   { border-color: var(--red);   color: var(--red); }

/* ─── Toast ─────────────────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 20px; right: 20px; background: var(--bg3);
  border: 1px solid var(--border2); border-radius: 9px;
  padding: 10px 16px; font-size: 0.82rem; z-index: 1000;
  animation: slideIn .2s ease; box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.toast.success { border-color: var(--green); color: var(--green); }
.toast.error   { border-color: var(--red);   color: var(--red); }
@keyframes slideIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* ─── Mobile Bottom Nav (hidden on desktop) ─────────────────────────────────── */
.mobile-nav { display: none; }

/* ═══════════════════════════════════════════════════════════════════════════════
   MOBILE  ≤ 768px
   ═══════════════════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  /* Allow body scroll on mobile */
  body { overflow: auto; height: auto; }
  #app { height: auto; min-height: 100dvh; padding-bottom: 58px; }
  .main-content { overflow: visible; height: auto; }
  .view { height: auto; }

  /* ── Topbar ── */
  .topbar { padding: 0 12px; height: 44px; position: sticky; top: 0; z-index: 50; }
  .logo-text { font-size: 0.85rem; }
  .top-nav { display: none; }          /* replaced by bottom nav */
  .user-tag { display: none; }
  .btn-top { padding: 4px 8px; font-size: 0.72rem; }
  #del-all-btn { display: none; }      /* hide on mobile, too risky accidental tap */

  /* ── Stats Bar ── */
  .statsbar {
    overflow-x: auto; flex-wrap: nowrap;
    padding: 6px 12px; gap: 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .statsbar::-webkit-scrollbar { display: none; }
  .sbar-card { flex-shrink: 0; padding: 5px 10px; }
  .sbar-label { font-size: 0.68rem; }
  .sbar-val   { font-size: 0.88rem; }

  /* ── Calendar View — vertical stack ── */
  #view-calendar { flex-direction: column; }

  .cal-panel {
    width: 100%; border-right: none; border-bottom: 1px solid var(--border);
    padding: 10px 10px 12px; gap: 10px;
  }
  .cal-box { padding: 10px 8px 8px; }
  .cal-nav { margin-bottom: 8px; }
  #cal-month-label { font-size: 0.95rem; }
  .cal-nav-btn { font-size: 1.1rem; width: 28px; height: 28px; }

  /* Day cells: use viewport width to fill evenly */
  .cal-days { gap: 3px; }
  .cal-day  { height: 46px; border-radius: 7px; }
  .day-num  { font-size: 0.82rem; }
  .day-dot  { width: 4px; height: 4px; margin-top: 3px; }
  .day-count{ font-size: 0.58rem; top: 3px; right: 4px; }

  /* Summary: 4 columns in one row */
  .cal-summary {
    grid-template-columns: repeat(4, 1fr); gap: 6px 4px;
    padding: 10px 12px;
  }
  .sum-label { font-size: 0.64rem; }
  .sum-val   { font-size: 0.82rem; }

  /* ── List Panel ── */
  .list-panel { padding: 10px 10px 0; flex: none; }
  .list-box   { border-radius: 10px; max-height: none; }
  .list-header { padding: 8px 12px; flex-wrap: wrap; gap: 6px; }
  .list-stats  { font-size: 0.74rem; gap: 10px; }

  /* Horizontal scroll for wide table */
  .list-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .list-table      { min-width: 480px; font-size: 0.76rem; }
  .list-table th, .list-table td { padding: 5px 8px; }

  /* Hide less-important column on mobile */
  .list-table th:nth-child(5),
  .list-table td:nth-child(5) { display: none; } /* 铸造天数 */

  /* ── Import View ── */
  #view-import { padding: 14px; }
  .import-wrap { max-width: 100%; }
  #import-textarea { rows: 10; font-size: 0.78rem; }

  /* ── Bottom Navigation ── */
  .mobile-nav {
    display: flex; position: fixed; bottom: 0; left: 0; right: 0; z-index: 60;
    background: var(--bg2); border-top: 1px solid var(--border);
    height: 56px; align-items: stretch;
  }
  .mobile-nav-item {
    flex: 1; display: flex; flex-direction: column; align-items: center;
    justify-content: center; gap: 3px; color: var(--text-dim);
    text-decoration: none; font-size: 0.68rem; transition: color .15s;
    padding: 6px 0;
  }
  .mobile-nav-item svg { width: 20px; height: 20px; }
  .mobile-nav-item.active { color: var(--blue); }
  .mobile-nav-item:hover  { color: var(--text-sub); }

  /* Modal full-width on small screens */
  .modal-card { width: calc(100vw - 32px); padding: 24px 20px; }
}