/* ===================== Brutalist dark theme ===================== */
:root {
  --bg: #0a0a0a;
  --panel: #141414;
  --panel-2: #1c1c1c;
  --ink: #f4f4f4;
  --muted: #9a9a9a;
  --line: #2e2e2e;
  --accent: #ffd60a;     /* high-contrast yellow */
  --accent-ink: #0a0a0a;
  --sys: #ff3b30;
  --dia: #0a84ff;
  --pulse: #30d158;
  --danger: #ff453a;
  --radius: 0px;         /* brutalist: hard edges */
  --tap: 34px;           /* compact dat.GUI-style rows */
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

/* Disable the ~300ms double-tap-to-zoom delay so taps register on the first
   press (fixes buttons/modal needing multiple clicks on touch devices). */
button, a, label, input, .btn, .tab { touch-action: manipulation; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  touch-action: manipulation;
  font-family: ui-sans-serif, system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  font-size: 13px;
  line-height: 1.3;
  padding: max(0px, env(safe-area-inset-top)) max(0px, env(safe-area-inset-right))
           max(0px, env(safe-area-inset-bottom)) max(0px, env(safe-area-inset-left));
  -webkit-tap-highlight-color: transparent;
}

h1, h2, legend { font-weight: 800; letter-spacing: 0.5px; }

.brand {
  font-size: 16px;
  margin: 0;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ============================= topbar ============================ */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  background: var(--panel);
  border-bottom: 2px solid var(--accent);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-actions { display: flex; gap: 6px; }
.topbar-actions .btn { min-height: 28px; padding: 5px 9px; font-size: 11px; text-decoration: none; display: inline-flex; align-items: center; }

/* ============================== tabs ============================= */
.tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 2px solid var(--line);
  background: var(--panel);
}
.tab {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  padding: 9px 6px;
  min-height: var(--tap);
  border-bottom: 3px solid transparent;
  cursor: pointer;
}
.tab.is-active { color: var(--ink); border-bottom-color: var(--accent); }

main { padding: 10px; max-width: 640px; margin: 0 auto; }

.view { display: none; }
.view.is-active { display: block; }

/* ============================= fields =========================== */
.field { display: flex; flex-direction: column; gap: 3px; margin-bottom: 8px; }
.field > span { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); font-weight: 700; }

input, textarea, select {
  width: 100%;
  font-size: 14px;
  color: var(--ink);
  background: var(--panel-2);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  padding: 7px 9px;
  min-height: var(--tap);
}
input:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { min-height: 48px; resize: vertical; }

.row.two { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* ========================= readings rows ======================== */
.section-head {
  display: flex; align-items: center; justify-content: space-between;
  margin: 4px 0 6px;
}
.section-head h2 { font-size: 13px; margin: 0; text-transform: uppercase; }

.reading-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 6px;
  align-items: end;
  margin-bottom: 7px;
  padding-bottom: 7px;
  border-bottom: 2px dashed var(--line);
}
.field.num { margin-bottom: 0; }
.field.num > span { font-size: 10px; }
.field.num > span small { color: var(--muted); font-weight: 600; text-transform: none; letter-spacing: 0; }

/* ============================ buttons =========================== */
.btn {
  appearance: none;
  font-family: inherit;
  font-weight: 800;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: var(--panel-2);
  color: var(--ink);
  min-height: var(--tap);
  padding: 7px 12px;
  cursor: pointer;
}
.btn:active { transform: translateY(2px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-ghost { background: transparent; }
.btn-block { width: 100%; }
.btn-sm { min-height: 26px; font-size: 11px; padding: 5px 9px; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }

.btn-add {
  width: var(--tap); height: var(--tap);
  font-size: 20px; line-height: 1;
  background: var(--accent); color: var(--accent-ink); border-color: var(--accent);
  padding: 0;
}
.btn-remove {
  align-self: stretch;
  min-height: var(--tap);
  width: var(--tap);
  font-size: 14px;
  background: transparent;
  border-color: var(--line);
  color: var(--muted);
  padding: 0;
}

.form-actions { margin-top: 10px; display: grid; gap: 6px; }

/* ============================ average =========================== */
.average-box {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--panel);
  border: 2px solid var(--accent);
  padding: 7px 10px;
  margin-bottom: 8px;
}
.average-label { text-transform: uppercase; letter-spacing: 1px; font-size: 11px; color: var(--muted); font-weight: 700; }
.average-value { font-size: 16px; font-weight: 800; }

/* ============================= flags ============================ */
.flags {
  border: 2px solid var(--line);
  border-radius: var(--radius);
  padding: 6px 10px 2px;
  margin: 6px 0 0;
}
.flags legend { font-size: 11px; text-transform: uppercase; color: var(--muted); padding: 0 6px; }
.check {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 2px;
  min-height: var(--tap);
  font-size: 13px;
  cursor: pointer;
  border-bottom: 1px solid var(--line);
}
.flags .check:last-child { border-bottom: none; }
.check input[type="checkbox"] {
  width: 20px; height: 20px; min-height: 20px;
  accent-color: var(--accent);
  flex: 0 0 auto;
}

/* ============================== list =========================== */
.entry-list { display: grid; gap: 7px; }
.entry {
  display: flex; justify-content: space-between; gap: 10px;
  background: var(--panel);
  border: 2px solid var(--line);
  border-left-width: 6px;
  padding: 8px 10px;
}
.entry-bp { font-size: 17px; font-weight: 800; }
.entry-pulse { font-size: 12px; color: var(--pulse); font-weight: 700; margin-left: 6px; }
.entry-when { color: var(--muted); font-size: 11px; margin-top: 2px; }
.entry-notes { margin-top: 5px; font-size: 12px; }
.entry-flags { margin-top: 5px; display: flex; flex-wrap: wrap; gap: 5px; }
.badge {
  background: var(--panel-2);
  border: 1px solid var(--line);
  padding: 1px 6px;
  font-size: 12px;
}
.entry-actions { display: flex; flex-direction: column; gap: 6px; justify-content: center; }

/* category color cues (left border) */
.cat-normal    { border-left-color: #30d158; }
.cat-elevated1 { border-left-color: #ffd60a; }
.cat-elevated2 { border-left-color: #ff9f0a; }
.cat-high      { border-left-color: #ff453a; }
.cat-crisis    { border-left-color: #ff2d55; }
.cat-unknown   { border-left-color: var(--line); }

/* ============================= graph =========================== */
.period-bar { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-bottom: 8px; }
.period {
  appearance: none;
  border: 2px solid var(--line);
  background: var(--panel-2);
  color: var(--muted);
  font-weight: 800;
  text-transform: uppercase;
  min-height: var(--tap);
  font-size: 12px;
  cursor: pointer;
}
.period.is-active { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); }
.chart-wrap { position: relative; height: 240px; background: var(--panel); border: 2px solid var(--line); padding: 8px; }

/* =========================== settings ========================== */
.settings { margin-top: 14px; border-top: 2px solid var(--line); padding-top: 8px; }
.settings summary { font-weight: 800; text-transform: uppercase; cursor: pointer; padding: 6px 0; font-size: 13px; }
.settings .btn { margin-top: 6px; margin-right: 6px; }

/* ============================ helpers ========================== */
.empty { color: var(--muted); text-align: center; padding: 20px 10px; }
.error { color: var(--danger); font-weight: 700; margin-top: 8px; }

/* ============================= login ========================== */
.login-body { display: flex; min-height: 100vh; align-items: center; justify-content: center; padding: 20px; }
.login-card {
  width: 100%; max-width: 360px;
  background: var(--panel);
  border: 2px solid var(--accent);
  padding: 20px 18px;
}
.login-sub { color: var(--muted); margin: 4px 0 16px; text-transform: uppercase; letter-spacing: 1px; font-size: 11px; }

/* ============================ toasts ========================== */
.toasts {
  position: fixed;
  left: 12px; right: 12px;
  bottom: calc(16px + env(safe-area-inset-bottom));
  display: flex; flex-direction: column; gap: 10px;
  z-index: 100;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  display: flex; align-items: center; gap: 10px;
  background: var(--panel-2);
  border: 2px solid var(--ink);
  padding: 9px 12px;
  font-size: 13px; font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 0 rgba(0,0,0,0.6);
  animation: toast-in 0.18s ease-out;
}
.toast-text { flex: 1; }
.toast-close {
  appearance: none; border: none; background: transparent;
  color: var(--ink); font-size: 16px; font-weight: 800;
  width: 30px; height: 30px; cursor: pointer; flex: 0 0 auto;
}
.toast-success  { border-color: var(--pulse); }
.toast-error    { border-color: var(--danger); }
.toast-reminder { border-color: var(--accent); background: #1a1606; }
.toast-info     { border-color: var(--line); }
.toast-out { opacity: 0; transform: translateY(8px); transition: all 0.2s; }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ===================== Quick-entry screen ===================== */
.quick-body {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
.quick-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--panel);
  border-bottom: 2px solid var(--accent);
}
.last-entry {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}
.last-entry-label {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  line-height: 1;
}
.last-entry-caption {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
}
.last-entry-bp {
  font-size: 16px;
  font-weight: 800;
  line-height: 1.1;
}
.last-entry-bp .last-entry-pulse { font-size: 11px; color: var(--muted); font-weight: 700; }
.last-entry-when { font-size: 10px; color: var(--muted); }
.icon-link {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px;
  border: 2px solid var(--line);
  color: var(--muted);
  font-size: 16px;
  text-decoration: none;
}
.icon-link:active { transform: translateY(2px); }

.quick-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  padding: 10px;
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
}
.quick-main .field { margin-bottom: 8px; }

.row.three { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.row.three .field.num { margin-bottom: 8px; }
.quick-main input[type="number"] { font-size: 18px; text-align: center; padding: 9px 6px; }

.quick-flags {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin: 3px 0 10px;
}
.quick-flags .check {
  border: 2px solid var(--line);
  padding: 7px 9px;
  margin: 0;
  font-size: 13px;
  justify-content: flex-start;
  gap: 8px;
}
.quick-flags .check:has(input:checked) {
  border-color: var(--accent);
  background: #1a1606;
}
.btn-save { font-size: 15px; min-height: 44px; }

/* ========================= Modal ========================= */
.modal {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  z-index: 200;
}
.modal[hidden] { display: none; }
.modal-card {
  width: 100%; max-width: 340px;
  background: var(--panel);
  border: 2px solid var(--accent);
  padding: 16px 16px;
  box-shadow: 0 6px 0 rgba(0, 0, 0, 0.6);
}
.modal-card h2 { margin: 0 0 10px; font-size: 15px; text-transform: uppercase; }
.modal-summary { margin-bottom: 14px; }
.modal-bp { font-size: 28px; font-weight: 800; }
.modal-when { color: var(--muted); margin-top: 4px; font-size: 12px; }
.modal-flags { margin-top: 8px; font-size: 13px; }
.modal-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }