:root {
  --bg:      #08090e;
  --surface: #111218;
  --border:  #1c1d28;
  --text:    #e2e8f0;
  --muted:   #4b5568;
  --accent:  #818cf8;
  --green:   #34d399;
  --red:     #f87171;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { height: 100%; }

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── Header ── */
header {
  width: 100%;
  max-width: 960px;
  padding: 40px 24px 28px;
  text-align: center;
}
header.home { padding-top: 56px; }

.logo {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -.03em;
  color: #fff;
  text-decoration: none;
  display: inline-block;
}
header.home .logo { font-size: clamp(2rem, 6vw, 3.2rem); }
.logo .dot { color: var(--accent); }

.sub {
  margin-top: 10px;
  font-size: .85rem;
  color: var(--muted);
  letter-spacing: .06em;
}
.sub b { color: var(--green); font-weight: 600; }

h1 {
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-top: 18px;
}
.tool-desc {
  max-width: 560px;
  margin: 10px auto 0;
  font-size: .92rem;
  color: var(--muted);
  line-height: 1.6;
}

.back {
  display: inline-block;
  margin-bottom: 6px;
  font-size: .8rem;
  color: var(--muted);
  text-decoration: none;
}
.back:hover { color: var(--accent); }

/* ── Layout ── */
main {
  width: 100%;
  max-width: 960px;
  padding: 0 24px 60px;
}
main.narrow { max-width: 640px; }

/* ── Hub cards ── */
.hub {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.hub a {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px;
  text-decoration: none;
  color: var(--text);
  transition: transform .15s, border-color .15s;
}
.hub a:hover { transform: translateY(-3px); border-color: var(--accent); }
.hub .ico { font-size: 1.6rem; display: block; margin-bottom: 10px; }
.hub h2 { font-size: 1rem; margin-bottom: 4px; }
.hub p { font-size: .78rem; color: var(--muted); line-height: 1.5; }

/* ── Tool card ── */
.tool {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px;
}

/* ── Controls ── */
button {
  font: inherit;
  border: 0;
  border-radius: 10px;
  padding: 10px 16px;
  cursor: pointer;
  background: var(--accent);
  color: #0b0c14;
  font-weight: 700;
  font-size: .85rem;
  transition: opacity .15s;
}
button:hover { opacity: .85; }
button.ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
}

input[type="range"] { width: 100%; accent-color: var(--accent); }

input[type="text"], input[type="number"], input[type="datetime-local"], select, textarea {
  font: inherit;
  font-size: .9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 11px 12px;
}
input:focus, select:focus, textarea:focus { outline: 1px solid var(--accent); }

textarea {
  width: 100%;
  min-height: 140px;
  resize: vertical;
}
textarea.code, input.code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .85rem;
}

label.opt {
  display: flex; align-items: center; gap: 8px;
  font-size: .8rem; color: var(--text);
  padding: 4px 0; cursor: pointer;
}
label.opt input { accent-color: var(--accent); }

.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row > * { flex: 1; min-width: 0; }
.row > button { flex: 0 0 auto; }
.field-label {
  display: block;
  font-size: .72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin: 16px 0 6px;
}
.field-label:first-child { margin-top: 0; }

.result {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--green);
  font-variant-numeric: tabular-nums;
  word-break: break-all;
  min-height: 48px;
}
.error { color: var(--red); font-size: .82rem; margin-top: 10px; }
.ok    { color: var(--green); font-size: .82rem; margin-top: 10px; }

.copied {
  color: var(--green); font-size: .75rem; margin-left: 6px;
  align-self: center; opacity: 0; transition: opacity .2s;
}
.copied.show { opacity: 1; }

/* ── Stats tiles ── */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 8px;
  margin-top: 12px;
}
.stat {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 6px;
  text-align: center;
}
.stat .n { font-size: 1.15rem; font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; }
.stat .l { font-size: .65rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; margin-top: 2px; }

/* ── Pomodoro ── */
.pomo { text-align: center; }
.pomo-time {
  font-size: 3.6rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.03em;
  margin: 10px 0 4px;
}
.pomo-mode { font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .12em; margin-bottom: 16px; }
.pomo-mode.focus { color: var(--accent); }
.pomo-mode.break { color: var(--green); }
.pomo-btns { display: flex; gap: 8px; justify-content: center; }

/* ── Visits counter ── */
.counter-row {
  margin-top: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.counter-label { color: var(--muted); font-size: .85rem; }
.counter-num {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

/* ── Footer ── */
footer {
  margin-top: auto;
  padding: 24px;
  text-align: center;
  color: var(--muted);
  font-size: .74rem;
  letter-spacing: .04em;
}
footer a { color: var(--muted); }
footer a:hover { color: var(--accent); }