/* Kairos — phone-first, dark. Designed to be glanced at, not read. */

:root {
  --bg: #0b0d12;
  --card: #141821;
  --card-2: #1b202b;
  --line: #262c3a;
  --txt: #e8ecf4;
  --dim: #8b94a8;
  --energy: #f2b544;
  --focus: #58b6f0;
  --grit: #7ee0a8;
  --accent: #9d8cff;
  --bad: #ff7a7a;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--txt);
  font: 16px/1.45 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: contain;
}

.screen {
  max-width: 520px;
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 18px calc(40px + env(safe-area-inset-bottom));
}
.screen.center {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}
.hidden { display: none !important; }

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.02em; }
h1 { font-size: 40px; }
h2 { font-size: 26px; }
h3 { font-size: 15px; color: var(--dim); font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; }

.sub { margin: 4px 0 0; color: var(--dim); font-size: 14px; }
.sub-inline { color: var(--dim); font-size: 12px; text-transform: none; letter-spacing: 0; }
.hint { margin: 6px 0 0; color: var(--dim); font-size: 12.5px; line-height: 1.4; }
.msg { min-height: 20px; font-size: 14px; color: var(--accent); }

.brand { text-align: center; margin-bottom: 20px; }
.brand .sub { font-style: italic; }

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

/* --- inputs --- */
input[type="email"], input[type="number"], input[type="time"] {
  width: 100%;
  padding: 13px 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--txt);
  font-size: 16px; /* 16px stops iOS zooming on focus */
  font-family: inherit;
}
input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
input::placeholder { color: #5a6377; }

.field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}
.field > span { flex: 0 0 auto; color: var(--dim); font-size: 14.5px; }
.field input { flex: 1 1 auto; max-width: 160px; text-align: right; }
.field.col { display: block; }
.field.col > span { display: block; margin-bottom: 8px; }

.optional {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  margin: 16px 0;
}
.optional summary { cursor: pointer; font-size: 14.5px; color: var(--txt); }
.optional[open] summary { margin-bottom: 10px; }
.tag {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 7px;
  background: var(--card-2);
  border-radius: 999px;
  font-size: 11px;
  color: var(--dim);
}

/* --- buttons --- */
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  color: var(--txt);
  background: none;
}
.primary {
  width: 100%;
  padding: 15px;
  margin-top: 8px;
  background: var(--accent);
  color: #0b0d12;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
}
.primary:active { transform: scale(0.99); }
.primary.sm { padding: 11px; font-size: 15px; }
.ghost {
  width: 100%;
  padding: 12px;
  margin-top: 6px;
  color: var(--dim);
  font-size: 14px;
}
.icon { font-size: 22px; color: var(--dim); padding: 4px 8px; }

.scale { display: flex; gap: 6px; }
.scale button {
  flex: 1;
  padding: 12px 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  color: var(--dim);
}
.scale button.on { background: var(--accent); color: #0b0d12; border-color: var(--accent); font-weight: 600; }
.scale.sm button { padding: 8px 0; font-size: 13px; }

/* --- now screen --- */
.stats { display: flex; gap: 10px; margin-bottom: 16px; }
.stat {
  flex: 1;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 10px;
  text-align: center;
}
.stat .num { display: block; font-size: 27px; font-weight: 600; letter-spacing: -0.03em; }
.stat .lbl { display: block; margin-top: 2px; font-size: 11.5px; color: var(--dim); text-transform: uppercase; letter-spacing: 0.07em; }
.stat:nth-child(1) .num { color: var(--energy); }
.stat:nth-child(2) .num { color: var(--focus); }
.stat:nth-child(3) .num { color: var(--grit); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}
.window { border-color: var(--accent); background: linear-gradient(180deg, rgba(157,140,255,0.12), var(--card)); }
.window-label { margin: 0; font-size: 12px; color: var(--dim); text-transform: uppercase; letter-spacing: 0.08em; }
.window-time { margin: 6px 0 0; font-size: 30px; font-weight: 600; letter-spacing: -0.03em; }
.window-note { margin: 6px 0 0; font-size: 13.5px; color: var(--dim); }
.window.live { border-color: var(--grit); background: linear-gradient(180deg, rgba(126,224,168,0.14), var(--card)); }
.window.live .window-time { color: var(--grit); }

.chart-wrap { margin-bottom: 14px; }
#chart { width: 100%; height: 130px; display: block; }
.legend { display: flex; gap: 14px; justify-content: center; margin-top: 6px; }
.key { font-size: 11.5px; color: var(--dim); display: flex; align-items: center; gap: 5px; }
.key::before { content: ''; width: 10px; height: 2.5px; border-radius: 2px; background: currentColor; }
.key.energy { color: var(--energy); }
.key.focus { color: var(--focus); }
.key.grit { color: var(--grit); }

.drivers { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 20px; }
.driver {
  padding: 6px 11px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--dim);
}
.driver.negative { border-color: rgba(255,122,122,0.4); color: var(--bad); }
.driver.positive { border-color: rgba(126,224,168,0.35); color: var(--grit); }

.log { display: flex; gap: 8px; margin-bottom: 24px; }
.log-btn {
  flex: 1;
  padding: 14px 4px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  font-size: 21px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}
.log-btn span { font-size: 11px; color: var(--dim); }
.log-btn:active { background: var(--card-2); }

.section { margin-bottom: 22px; }
.section h3 { margin-bottom: 10px; }
.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  padding: 8px 13px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--dim);
}
.chip.on { background: rgba(126,224,168,0.15); border-color: var(--grit); color: var(--grit); }

.checkin-row { display: flex; align-items: center; gap: 12px; margin: 10px 0; }
.checkin-row > span { flex: 0 0 52px; font-size: 13.5px; color: var(--dim); }
.checkin-row .scale { flex: 1; }

.footer { text-align: center; font-size: 12px; color: var(--dim); margin-top: 26px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: var(--card-2);
  border: 1px solid var(--line);
  padding: 11px 18px;
  border-radius: 999px;
  font-size: 14px;
  z-index: 10;
  animation: rise 0.2s ease;
}
@keyframes rise {
  from { opacity: 0; transform: translate(-50%, 8px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}