/* ── Design tokens (copied from blog Layout.astro) ──────────────── */
:root {
  --bg:            #fefdf8;
  --surface:       #f5f2eb;
  --border:        #e0dbd0;
  --border-light:  #ede9e0;
  --text:          #1c1a16;
  --muted:         #7a7468;
  --link:          #4a7c5f;
  --link-hover:    #2f5c42;

  --sage:          #4a7c5f;
  --sage-light:    #8fba9f;
  --sage-pale:     #eef5f1;
  --rose:          #c07878;
  --rose-pale:     #f9efef;
  --peach:         #c49060;
  --peach-pale:    #fdf3ea;

  --font-display:  'DM Sans', system-ui, -apple-system, sans-serif;
  --font-body:     'DM Sans', system-ui, -apple-system, sans-serif;
  --font-ui:       'DM Sans', system-ui, -apple-system, sans-serif;
  --font-mono:     'DM Mono', 'Fira Code', Consolas, monospace;

  /* sky color is state-driven; default = idle */
  --sky-fill: var(--bg);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden; /* single-viewport, no scroll */
}

.back-link {
  position: absolute;
  top: 1rem;
  left: 1.25rem;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--muted);
  text-decoration: none;
  z-index: 10;
}
.back-link:hover { color: var(--link); }

.stage {
  flex: 1;
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  align-items: center;
  justify-items: center;
  padding-top: 5rem;
  position: relative;
}

/* ── Priority input ───────────────────────────────────────────── */
.priority {
  font-family: var(--font-body);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text);
  text-align: center;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  width: min(28rem, 80vw);
  outline: none;
  transition: border-color 0.15s;
}
.priority::placeholder { color: var(--muted); opacity: 0.7; }
.priority:focus { border-color: var(--sage); }
.priority:disabled { color: var(--text); -webkit-text-fill-color: var(--text); opacity: 1; cursor: default; }

/* When a session is running we visually freeze the input as static text */
.stage[data-state="focus"] .priority,
.stage[data-state="break"] .priority,
.stage[data-state="paused-focus"] .priority,
.stage[data-state="paused-break"] .priority,
.stage[data-state="focus_done"] .priority,
.stage[data-state="break_done"] .priority {
  border-bottom-color: transparent;
  pointer-events: none;
}

/* ── Timer ────────────────────────────────────────────────────── */
.timer {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  margin-top: 1.5rem;
  color: var(--text);
}

/* ── Controls ─────────────────────────────────────────────────── */
.controls {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.65rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s, transform 0.08s;
}
.btn:hover { background: var(--border-light); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--sage);
  color: var(--bg);
  border-color: var(--sage);
}
.btn-primary:hover { background: var(--link-hover); border-color: var(--link-hover); }
.btn-primary:disabled { background: var(--sage); border-color: var(--sage); }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--border-light);
}
.btn-ghost:hover { background: var(--surface); color: var(--text); }

/* ── Scene ────────────────────────────────────────────────────── */
.scene {
  width: 100%;
  height: auto;
  display: block;
  align-self: end;
  margin-top: 2rem;
}

.sky { fill: var(--sky-fill); transition: fill 600ms ease; }
.hill-back { fill: #d6e3d8; }
.hill-mid  { fill: #b6d2bc; }
.meadow    { fill: #c9d9b8; }

/* ── State-driven sky tints ───────────────────────────────────── */
.stage[data-state="idle"]        { --sky-fill: var(--bg); }
.stage[data-state="focus"],
.stage[data-state="paused-focus"]{ --sky-fill: var(--sage-pale); }
.stage[data-state="break"],
.stage[data-state="paused-break"]{ --sky-fill: var(--peach-pale); }
.stage[data-state="focus_done"]  { --sky-fill: var(--sage-pale); }
.stage[data-state="break_done"]  { --sky-fill: var(--peach-pale); }

/* ── End-of-timer pulse ───────────────────────────────────────── */
@keyframes pulse-sage {
  0%   { fill: var(--sage-pale); }
  40%  { fill: var(--sage-light); }
  100% { fill: var(--sage-pale); }
}
@keyframes pulse-peach {
  0%   { fill: var(--peach-pale); }
  40%  { fill: var(--peach); }
  100% { fill: var(--peach-pale); }
}
.sky.pulse-sage  { animation: pulse-sage  900ms ease-out; }
.sky.pulse-peach { animation: pulse-peach 900ms ease-out; }

/* ── Mobile ───────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .stage { padding-top: 4rem; }
  .priority { font-size: 1.1rem; width: 90vw; }
  .controls { flex-wrap: wrap; justify-content: center; }
}