:root {
  --fl-bg:      #e8f4ff;
  --fl-border:  #b0d4f8;
  --fl-text:    #185890;
  --fl-icon-bg: #e8f4ff;
}

.app-hero{border-bottom:1px solid var(--color-border);padding:1.25rem 1.5rem 1.1rem}
.app-hero--sky{background:var(--fl-bg);border-bottom-color:var(--fl-border)}
.app-hero__inner{margin:0 auto}
.app-hero__title{font-size:clamp(1.4rem,3vw,2rem);font-weight:800;color:var(--fl-text);letter-spacing:-.02em;margin:0 0 .5rem;line-height:1.2}
.app-hero__desc{font-size:.9rem;color:var(--color-text-secondary);max-width:660px;line-height:1.6;margin:0 0 .85rem}
.app-hero__chips{display:flex;flex-wrap:wrap;gap:.35rem}
.hero-chip{display:inline-flex;align-items:center;padding:.22rem .65rem;font-size:.72rem;font-weight:700;background:var(--color-surface);border:1.5px solid var(--fl-border);border-radius:var(--radius-full);color:var(--fl-text);white-space:nowrap}

.app-wrap {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 1.5rem 1rem 3rem;
}
.pane-in { width: 320px; flex-shrink: 0; display: flex; flex-direction: column; gap: 1rem; }
.pane-out { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 1rem; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--fl-border);
  border-radius: var(--radius-xl);
  padding: 1rem 1.125rem;
}
.card-title {
  font-size: .7rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--fl-text); margin: 0 0 .75rem;
}

.field { margin-bottom: .75rem; }
.field:last-child { margin-bottom: 0; }

label.lbl {
  display: block; font-size: .72rem; font-weight: 600;
  color: var(--color-text-muted); margin-bottom: .28rem;
}

input.num-in {
  width: 100%; box-sizing: border-box;
  padding: .4rem .6rem; font-size: .9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg); color: var(--color-text);
  transition: border-color .15s;
}
input.num-in:focus { outline: none; border-color: var(--fl-text); }

/* Unit toggle */
.unit-toggle {
  display: flex; border: 1.5px solid var(--fl-border);
  border-radius: var(--radius-md); overflow: hidden; margin-bottom: .75rem;
}
.unit-toggle button {
  flex: 1; padding: .32rem .5rem; font-size: .78rem; font-weight: 600;
  background: none; border: none; cursor: pointer; color: var(--color-text-muted);
  transition: background .15s, color .15s;
}
.unit-toggle button.active { background: var(--fl-bg); color: var(--fl-text); }

/* Timer controls */
.timer-btn-row { display: flex; gap: .5rem; }
.btn-primary, .btn-secondary {
  flex: 1; padding: .45rem .6rem; font-size: .8rem; font-weight: 700;
  border-radius: var(--radius-md); cursor: pointer; transition: opacity .15s;
}
.btn-primary { background: var(--fl-text); border: none; color: #fff; }
.btn-primary:hover { opacity: .85; }
.btn-secondary { background: var(--color-bg); border: 1.5px solid var(--color-border); color: var(--color-text); }
.btn-secondary:hover { border-color: var(--fl-text); color: var(--fl-text); }

/* Disclaimer */
.disclaimer-card { border-color: #f0b0b0; background: #fff7f5; }
.disclaimer-card .card-title { color: #b02020; }
.disclaimer-text { font-size: .76rem; color: #903018; line-height: 1.55; margin: 0; }

/* Results grid */
.results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .6rem;
}
.result-cell {
  background: var(--fl-bg); border: 1px solid var(--fl-border);
  border-radius: var(--radius-md); padding: .6rem .75rem;
}
.result-cell.wide { grid-column: span 2; }
.result-lbl {
  font-size: .62rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .07em; color: var(--color-text-muted); margin-bottom: .2rem;
}
.result-val {
  font-size: 1.4rem; font-weight: 800; color: var(--fl-text); line-height: 1.2;
}
.result-val.sm { font-size: 1rem; }

/* Timer card */
.timer-card { text-align: center; }
.timer-display {
  font-size: 3.2rem; font-weight: 800; color: var(--fl-text);
  font-family: 'SFMono-Regular', Consolas, monospace; letter-spacing: .02em;
  padding: .5rem 0;
}
.timer-status {
  font-size: .8rem; font-weight: 600; color: var(--color-text-muted); margin: 0;
}
.timer-status.running { color: #1a7a2e; }
.timer-status.done { color: #b02020; }

@media (max-width: 720px) {
  .app-wrap { flex-direction: column; }
  .pane-in { width: 100%; }
}