:root {
  --blue: #07a7f7;
  --blue-dark: #0585c7;
  --ink: #14202b;
  --muted: #5d6d7a;
  --line: #dde5ec;
  --bg: #f4f8fb;
  --card: #ffffff;
  --danger: #c0392b;
  --ok-bg: #e8f7ee;
  --ok-ink: #1e7a3c;
  --err-bg: #fdecea;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }

/* Header */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 12px 16px; background: var(--ink); color: #fff;
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-logo {
  height: 42px; width: auto; display: block;
  background: #fff; border-radius: 8px; padding: 5px 9px;
}
.brand-name { font-weight: 700; font-size: 16px; line-height: 1.1; }
.brand-sub { font-size: 12px; color: #bcd7ea; }
.user-box { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.user-name { font-size: 14px; font-weight: 600; }

/* Layout */
.container { max-width: 760px; margin: 0 auto; padding: 16px 12px 32px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; margin-bottom: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 17px; }
.card h3 { margin: 16px 0 8px; font-size: 14px; }
.footer { text-align: center; color: var(--muted); font-size: 12px; padding: 8px 0 24px; }

/* Buttons */
.btn {
  appearance: none; border: 1px solid transparent; border-radius: 8px;
  font-size: 15px; font-weight: 600; padding: 11px 16px; cursor: pointer;
  min-height: 44px;
}
.btn-primary { background: var(--blue); color: #fff; width: 100%; }
.btn-primary:active { background: var(--blue-dark); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.topbar .btn-ghost { border-color: #33506b; color: #fff; }
.btn-small { padding: 6px 12px; min-height: 36px; font-size: 13px; }
.btn-link { background: none; color: var(--blue); width: 100%; font-weight: 500; }
.btn-chip { background: #eaf6fe; color: var(--blue-dark); border-color: #cdeafd; padding: 8px 14px; min-height: 40px; font-size: 14px; }
.btn-danger { color: var(--danger); }

/* Forms */
.form { display: flex; flex-direction: column; gap: 12px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: var(--ink); }
.form input, .form select, .form textarea {
  font: inherit; font-size: 16px; font-weight: 400; padding: 11px 12px;
  border: 1px solid var(--line); border-radius: 8px; background: #fff; width: 100%;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: 2px solid var(--blue); outline-offset: 0; border-color: var(--blue); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-inline { flex-direction: column; }
.form-actions { display: flex; gap: 10px; }
.form-actions .btn-primary { flex: 1; }
.quick-picks { display: flex; gap: 8px; }
.error { background: var(--err-bg); color: var(--danger); border-radius: 8px; padding: 10px 12px; font-size: 14px; }
.notice { background: var(--ok-bg); color: var(--ok-ink); border-radius: 8px; padding: 10px 12px; font-size: 14px; }

/* Tabs + toggles */
.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab {
  flex: 1; appearance: none; border: 1px solid var(--line); background: #fff;
  border-radius: 8px; padding: 10px; font-size: 14px; font-weight: 600; cursor: pointer; min-height: 44px;
}
.tab.active { background: var(--blue); border-color: var(--blue); color: #fff; }
.toggle { display: flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.toggle-btn {
  flex: 1; appearance: none; border: 0; background: #fff; padding: 11px 10px;
  font-size: 14px; font-weight: 600; cursor: pointer; min-height: 44px; color: var(--ink);
}
.toggle-btn.active { background: var(--blue); color: #fff; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.stat { margin-bottom: 0; text-align: left; }
.stat-label { font-size: 12px; font-weight: 700; letter-spacing: .6px; text-transform: uppercase; color: var(--muted); }
.stat-hours { font-size: 30px; font-weight: 800; color: var(--blue-dark); margin: 4px 0 2px; }
.stat-sub { font-size: 13px; color: var(--muted); }

/* Split bar */
.split-bar { display: flex; height: 18px; border-radius: 9px; overflow: hidden; background: #e3ecf3; }
.split-gi { background: var(--blue); transition: width .3s; }
.split-nogi { background: #f39c3c; transition: width .3s; }
.split-legend { display: flex; gap: 20px; margin-top: 8px; font-size: 14px; color: var(--muted); }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 5px; }
.dot-gi { background: var(--blue); }
.dot-nogi { background: #f39c3c; }

/* Belt chip */
.belt-chip {
  display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px;
  font-weight: 700; border: 1px solid var(--line); vertical-align: middle; white-space: nowrap;
}
.belt-white { background: #ffffff; color: var(--ink); }
.belt-blue { background: #2456c8; color: #fff; border-color: #2456c8; }
.belt-purple { background: #6d3bbf; color: #fff; border-color: #6d3bbf; }
.belt-brown { background: #7a4a21; color: #fff; border-color: #7a4a21; }
.belt-black { background: #111111; color: #fff; border-color: #111111; }
.profile-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }

/* Tags */
.tag-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tag-list li { background: #eaf6fe; color: var(--blue-dark); border-radius: 20px; padding: 5px 12px; font-size: 13px; font-weight: 600; }
.tag-list .tag-count { color: var(--muted); font-weight: 500; }

/* History */
.history-controls { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
.history-controls input[type="search"] {
  font: inherit; font-size: 16px; padding: 11px 12px; border: 1px solid var(--line); border-radius: 8px; width: 100%;
}
.history-list { list-style: none; margin: 0; padding: 0; }
.history-item { border-top: 1px solid var(--line); padding: 12px 0; }
.history-item:first-child { border-top: 0; }
.history-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.history-date { font-weight: 700; }
.history-dur { color: var(--muted); font-size: 13px; }
.type-badge { font-size: 11px; font-weight: 800; letter-spacing: .4px; padding: 3px 8px; border-radius: 4px; text-transform: uppercase; }
.type-gi { background: var(--blue); color: #fff; }
.type-nogi { background: #f39c3c; color: #fff; }
.history-tech { margin-top: 4px; font-size: 14px; }
.history-notes { margin-top: 2px; font-size: 13px; color: var(--muted); white-space: pre-wrap; }
.history-actions { margin-top: 6px; display: flex; gap: 14px; }
.history-actions button { background: none; border: 0; padding: 4px 0; font-size: 13px; font-weight: 600; color: var(--blue-dark); cursor: pointer; }
.history-actions button.del { color: var(--danger); }

.auth-card { max-width: 440px; margin: 24px auto; }

@media (min-width: 560px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .form-inline { flex-direction: row; align-items: end; }
  .form-inline label { flex: 1; }
  .form-inline .btn { width: auto; }
  .history-controls { flex-direction: row; align-items: center; }
  .history-controls .toggle { flex: 0 0 220px; }
}