:root {
  --forest: #1E3A2B;
  --green: #2E7D4F;
  --green-soft: #E3F0E7;
  --amber: #E8A23A;
  --amber-deep: #C8862A;
  --cream: #FBF6EC;
  --paper: #FFFFFF;
  --ink: #1F2A22;
  --muted: #5E6B62;
  --line: #E4DDCC;
  --danger: #B5523A;
  --r-lg: 22px;
  --r-md: 14px;
  --shadow: 0 1px 0 rgba(30, 58, 43, .06), 0 10px 28px -14px rgba(30, 58, 43, .35);
  --font: "Be Vietnam Pro", -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--cream);
  padding-bottom: 150px;
  -webkit-text-size-adjust: 100%;
}
button, input, textarea, select { font: inherit; color: inherit; }
.hidden { display: none !important; }

.top {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: var(--forest); color: #fff;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; letter-spacing: .2px; }
.logo { width: 34px; height: 34px; }
.ghost { background: transparent; border: 1px solid rgba(255,255,255,.35); color: #fff; border-radius: 999px; padding: 6px 14px; font-size: 15px; cursor: pointer; }

main { max-width: 640px; margin: 0 auto; padding: 18px 16px; }
.loading { text-align: center; color: var(--muted); padding: 40px 0; }

h1 { font-size: 27px; line-height: 1.25; margin: 6px 0 4px; font-weight: 800; color: var(--forest); }
h2 { font-size: 20px; margin: 0 0 8px; font-weight: 800; color: var(--forest); }
h3 { font-size: 18px; margin: 0 0 6px; }
.sub { color: var(--muted); margin: 0 0 16px; }
.small { font-size: 15px; color: var(--muted); }

.card {
  background: var(--paper); border-radius: var(--r-lg); padding: 18px;
  margin: 0 0 14px; box-shadow: var(--shadow); border: 1px solid #EFE8D8;
}
.card.hero { background: var(--forest); color: #fff; border: none; }
.card.hero h2, .card.hero h3 { color: #fff; }
.card.hero .small { color: rgba(255,255,255,.75); }
.card.done { background: var(--green-soft); box-shadow: none; }
.eyebrow { font-size: 13px; font-weight: 800; letter-spacing: 1.2px; text-transform: uppercase; color: var(--amber-deep); margin-bottom: 4px; }
.hero .eyebrow { color: var(--amber); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 50px; padding: 12px 20px; border-radius: 999px; border: none;
  background: var(--green); color: #fff; font-weight: 800; font-size: 17px; cursor: pointer;
  transition: transform .12s ease, opacity .12s ease;
}
.btn:active { transform: scale(.97); }
.btn:focus-visible, .chip:focus-visible, .wx:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
.btn.amber { background: var(--amber); color: var(--forest); }
.btn.line { background: transparent; color: var(--green); border: 2px solid var(--green); }
.btn.full { width: 100%; }
.btn[disabled] { opacity: .5; cursor: default; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

label.f { display: block; font-weight: 600; margin: 12px 0 6px; }
input.f, textarea.f, select.f {
  width: 100%; border: 2px solid var(--line); border-radius: var(--r-md);
  padding: 12px 14px; background: #fff; font-size: 17px;
}
textarea.f { min-height: 96px; resize: vertical; }
input.f:focus, textarea.f:focus, select.f:focus { outline: none; border-color: var(--green); }
.msg { margin-top: 10px; font-weight: 600; }
.msg.err { color: var(--danger); }
.msg.ok { color: var(--green); }

/* Thời tiết */
.wxs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin: 10px 0; }
.wx {
  border: 2px solid var(--line); background: #fff; border-radius: var(--r-md);
  padding: 10px 2px; text-align: center; cursor: pointer; font-size: 13px; font-weight: 600;
}
.wx b { display: block; font-size: 30px; line-height: 1.2; }
.wx.on { border-color: var(--green); background: var(--green-soft); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.chip {
  border: 2px solid var(--line); background: #fff; border-radius: 999px;
  padding: 7px 14px; cursor: pointer; font-size: 15px;
}
.chip.on { background: var(--forest); border-color: var(--forest); color: #fff; }
.goc { font-weight: 800; font-size: 15px; margin-top: 10px; }

/* Buổi */
.buoi { display: flex; gap: 14px; align-items: flex-start; }
.so {
  flex: 0 0 44px; height: 44px; border-radius: 14px; display: grid; place-items: center;
  background: var(--amber); color: var(--forest); font-weight: 800; font-size: 19px;
}
.so.khoa { background: #EDE7DA; color: #A79F8D; }
.tick { display: flex; align-items: center; gap: 10px; padding: 12px 0; border-top: 1px solid #F1EBDD; }
.tick:first-of-type { border-top: none; }
.tick .ok { color: var(--green); font-weight: 800; }
.leaf { display: inline-block; background: var(--green-soft); color: var(--forest); border-radius: 999px; padding: 4px 12px; margin: 3px 4px 3px 0; font-weight: 600; font-size: 15px; }

/* Đồ nghề */
.tools { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.tool {
  background: #fff; border-radius: var(--r-lg); padding: 16px; text-align: left; cursor: pointer;
  border: 1px solid #EFE8D8; box-shadow: var(--shadow); min-height: 120px;
}
.tool .i { font-size: 32px; display: block; margin-bottom: 6px; }
.tool b { display: block; font-size: 17px; line-height: 1.3; }
.tool.khoa { opacity: .45; box-shadow: none; cursor: default; }
ol.steps { padding-left: 22px; margin: 8px 0; }
ol.steps li { margin: 8px 0; }
.nho { background: var(--amber); color: var(--forest); font-weight: 800; padding: 12px 14px; border-radius: var(--r-md); margin-top: 10px; }

/* Nhật ký */
.ngay { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-top: 1px solid #F1EBDD; }
.ngay:first-child { border-top: none; }
.ngay .ic { font-size: 28px; }

/* Thanh tab + nút cần người lớn */
.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: #fff; border-top: 1px solid var(--line);
  padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
}
.tabs button { background: none; border: none; padding: 6px 0; font-size: 13px; font-weight: 600; color: var(--muted); cursor: pointer; }
.tabs button span { display: block; font-size: 22px; }
.tabs button.on { color: var(--green); }
.tabs button.help { color: var(--danger); font-weight: 800; }
body { padding-bottom: 96px; }

/* Hộp thoại */
.modal { position: fixed; inset: 0; z-index: 50; background: rgba(20, 30, 24, .55); display: flex; align-items: flex-end; justify-content: center; }
.sheet {
  position: relative; width: 100%; max-width: 640px; max-height: 92vh; overflow: auto;
  background: var(--cream); border-radius: 24px 24px 0 0; padding: 22px 18px calc(24px + env(safe-area-inset-bottom));
}
.x { position: absolute; top: 12px; right: 12px; width: 40px; height: 40px; border-radius: 50%; border: none; background: #EDE7DA; font-size: 18px; cursor: pointer; }

/* Người dẫn */
.noi { background: #fff; border-left: 5px solid var(--green); border-radius: 10px; padding: 12px 14px; margin: 8px 0; font-size: 18px; }
.noi::before { content: "NÓI"; display: block; font-size: 12px; font-weight: 800; letter-spacing: 1.5px; color: var(--green); margin-bottom: 4px; }
.hieu { font-style: italic; color: var(--muted); margin: 8px 0; }
.hieu::before { content: "HIỂU · "; font-style: normal; font-weight: 800; font-size: 12px; letter-spacing: 1.5px; }
.khoi { border-top: 2px dashed var(--line); padding-top: 12px; margin-top: 14px; }
.khoi .p { display: inline-block; background: var(--forest); color: #fff; border-radius: 8px; padding: 2px 10px; font-weight: 800; font-size: 14px; }
.khoi.now { background: #FFF6E3; border-radius: 12px; padding: 12px; border-top: none; }
.timer { position: sticky; top: 58px; z-index: 10; background: var(--amber); color: var(--forest); border-radius: var(--r-md); padding: 10px 14px; font-weight: 800; display: flex; justify-content: space-between; align-items: center; }
.wxrow { display: flex; gap: 2px; font-size: 20px; }
.alert { background: #FBE6E1; border: 1px solid #EBB7A9; border-radius: var(--r-md); padding: 12px; margin: 8px 0; }
table.t { width: 100%; border-collapse: collapse; font-size: 15px; }
table.t td, table.t th { padding: 8px 6px; border-bottom: 1px solid #EFE8D8; text-align: left; vertical-align: top; }

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