:root {
  color-scheme: light;
  --ink: #17243a;
  --muted: #68758a;
  --line: #dbe4f0;
  --soft: #f4f7fb;
  --accent: #3268b3;
  --accent-dark: #244d88;
  --accent-wash: #e4edfb;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--ink); background: linear-gradient(135deg, #edf4fc 0%, #fafcff 48%, #e8f0fa 100%); }
main { width: min(920px, calc(100% - 32px)); margin: 0 auto; padding: 72px 0 64px; }
.eyebrow { margin: 0 0 12px; color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1 { max-width: 650px; margin: 0; font-size: clamp(2.5rem, 6vw, 5rem); line-height: .98; letter-spacing: -.06em; }
.intro { max-width: 570px; margin: 22px 0 36px; color: var(--muted); font-size: 1.08rem; line-height: 1.6; }
.panel { padding: 24px; border: 1px solid rgba(219, 228, 240, .9); border-radius: 20px; background: rgba(255, 255, 255, .82); box-shadow: 0 20px 50px rgba(35, 66, 111, .09); backdrop-filter: blur(12px); }
label { display: block; margin-bottom: 9px; color: var(--muted); font-size: .83rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
textarea, select { width: 100%; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); background: #fff; font: inherit; outline: none; transition: border-color .2s, box-shadow .2s; }
textarea { min-height: 154px; padding: 16px; resize: vertical; line-height: 1.55; }
textarea:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(50, 104, 179, .13); }
.controls { display: grid; grid-template-columns: 1fr 180px; gap: 18px; align-items: end; margin-top: 20px; }
select { padding: 13px 14px; cursor: pointer; }
.summary { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin: 34px 0 15px; }
h2 { margin: 0; font-size: 1.1rem; letter-spacing: -.02em; }
.count { padding: 7px 11px; border-radius: 999px; color: var(--accent-dark); background: var(--accent-wash); font-size: .8rem; font-weight: 800; }
.results { display: flex; flex-wrap: wrap; gap: 9px; min-height: 112px; padding: 18px; border: 1px dashed #cbd9ec; border-radius: 15px; background: rgba(244, 247, 251, .7); }
.sentence { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 14px; align-items: center; width: 100%; padding: 9px 13px; border: 1px solid #d7e2f1; border-radius: 9px; background: #fff; font-weight: 650; box-shadow: 0 2px 5px rgba(35, 66, 111, .04); }
.sentence-count { display: block; color: var(--accent); font-size: .76rem; font-weight: 800; }
.copy-button { grid-column: 2; grid-row: 1 / span 2; padding: 8px 12px; border: 1px solid var(--accent); border-radius: 8px; color: var(--accent-dark); background: var(--accent-wash); font: inherit; font-size: .82rem; font-weight: 800; cursor: pointer; }
.copy-button:hover { background: #d5e3f8; }
.copy-button:focus-visible { outline: 3px solid rgba(50, 104, 179, .25); outline-offset: 2px; }
.empty { width: 100%; margin: auto; color: var(--muted); text-align: center; }
@media (max-width: 600px) { main { padding-top: 44px; } .panel { padding: 18px; } .controls { grid-template-columns: 1fr; gap: 16px; } }