/* ---------- Tokens ---------- */
:root {
  --ink:        #0A0E1A;
  --surface:    #121A2B;
  --surface-2:  #19233A;
  --border:     #263349;
  --text:       #E7ECF5;
  --text-muted: #7C8AA6;

  --cyan:   #35C9E1;
  --cyan-dim: #1B6B7A;
  --coral:  #FF7A59;

  --heat-0: #151E30;
  --heat-1: #12475A;
  --heat-2: #1A7285;
  --heat-3: #24A6B0;
  --heat-4: #3FE0D8;

  --font-display: 'Sora', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --radius: 12px;
  --radius-sm: 7px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

code, pre { font-family: var(--font-mono); }

/* faint background grid, evokes graph/radar paper */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(53,201,225,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53,201,225,0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}

/* ---------- Topbar ---------- */
.topbar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 0 rgba(255,122,89,0.6);
  animation: pulse 2.4s ease-out infinite;
  align-self: center;
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255,122,89,0.55); }
  70%  { box-shadow: 0 0 0 8px rgba(255,122,89,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,122,89,0); }
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.14em;
  font-size: 18px;
}

.brand-sub {
  color: var(--text-muted);
  font-size: 13px;
}

.app-picker select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  min-width: 180px;
  cursor: pointer;
}

.app-picker select:disabled {
  color: var(--text-muted);
  cursor: default;
}

/* ---------- Layout ---------- */
main {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ---------- Empty state ---------- */
.empty-state {
  text-align: center;
  padding: 80px 20px;
}

.empty-state h1 {
  font-family: var(--font-display);
  font-size: 26px;
  margin-bottom: 8px;
}

.empty-state p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.empty-state .code-block {
  max-width: 460px;
  margin: 0 auto;
  text-align: left;
}

/* ---------- Readout (digital counter row) ---------- */
.readout {
  display: flex;
  align-items: stretch;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 8px;
  overflow-x: auto;
}

.readout-item {
  flex: 1 1 0;
  min-width: 108px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
}

.readout-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 30px;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
  letter-spacing: 0.01em;
}

.readout-item--total .readout-value {
  color: var(--coral);
}

.readout-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.readout-sep {
  width: 1px;
  background: var(--border);
  flex-shrink: 0;
}

/* ---------- Panels ---------- */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.panel-head h2 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin: 0;
  color: var(--text);
}

.chart-wrap {
  position: relative;
  width: 100%;
}

/* ---------- Year nav ---------- */
.year-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
}

.year-btn {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  width: 26px;
  height: 26px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 15px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.year-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.year-btn:disabled { opacity: 0.35; cursor: default; }

.year-label { font-size: 14px; color: var(--text-muted); min-width: 42px; text-align: center; }

/* ---------- Heatmap ---------- */
.heatmap-scroll {
  overflow-x: auto;
  padding-bottom: 4px;
}

.heatmap {
  display: inline-flex;
  gap: 3px;
}

.heatmap-week {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.heatmap-month-labels {
  display: inline-flex;
  gap: 3px;
  margin-bottom: 4px;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.heatmap-cell {
  width: 11px;
  height: 11px;
  border-radius: 2px;
  background: var(--heat-0);
  cursor: default;
  transition: outline-color 0.1s ease;
}

.heatmap-cell[data-empty="1"] { background: transparent; cursor: default; }
.heatmap-cell[data-level="0"] { background: var(--heat-0); }
.heatmap-cell[data-level="1"] { background: var(--heat-1); }
.heatmap-cell[data-level="2"] { background: var(--heat-2); }
.heatmap-cell[data-level="3"] { background: var(--heat-3); }
.heatmap-cell[data-level="4"] { background: var(--heat-4); }

.heatmap-cell[data-today="1"] {
  outline: 1.5px solid var(--coral);
  outline-offset: 1px;
}

.heatmap-cell:not([data-empty="1"]):hover {
  outline: 1.5px solid var(--text);
  outline-offset: 1px;
}

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 14px;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.legend-cell {
  width: 11px;
  height: 11px;
  border-radius: 2px;
}
.legend-cell[data-level="0"] { background: var(--heat-0); }
.legend-cell[data-level="1"] { background: var(--heat-1); }
.legend-cell[data-level="2"] { background: var(--heat-2); }
.legend-cell[data-level="3"] { background: var(--heat-3); }
.legend-cell[data-level="4"] { background: var(--heat-4); }

/* ---------- Tooltip ---------- */
.tooltip {
  position: fixed;
  z-index: 20;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
  pointer-events: none;
  white-space: nowrap;
  transform: translate(-50%, -130%);
}

.tooltip strong { color: var(--cyan); }

/* ---------- Integrate panel ---------- */
.integrate-copy {
  color: var(--text-muted);
  margin: 0 0 14px;
  font-size: 14px;
}

.integrate-copy strong { color: var(--text); }

.code-block {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  overflow-x: auto;
  margin: 0 0 10px;
  font-size: 13px;
  cursor: pointer;
  position: relative;
}

.code-block:hover { border-color: var(--cyan); }

.code-block code { color: var(--cyan); }

.code-block::after {
  content: "copiar";
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.code-block.copied::after {
  content: "copiado ✓";
  color: var(--coral);
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .topbar { padding: 18px 18px; }
  main { padding: 24px 14px 48px; }
  .readout { padding: 18px 4px; }
  .readout-value { font-size: 22px; }
  .readout-item { min-width: 88px; }
  .panel { padding: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .brand-dot { animation: none; }
}