@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=DotGothic16&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  /* Nothing-inspired: true black, off-white, grey, single red accent */
  --ink: #000000;
  --surface: #0A0A0B;
  --surface-raised: #141416;
  --steel: #2B2B2E;
  --steel-soft: #1A1A1C;
  --chalk: #F3F2ED;
  --chalk-dim: #8B8B8F;

  --brass: #FF3B30;        /* Nothing red — primary accent */
  --brass-dim: #7A1E1A;
  --iron-red: #FF3B30;      /* same red, used for negative/intense signals */
  --moss: #F3F2ED;          /* "positive" state -> brightness, not hue */
  --slate-blue: #5C5C60;    /* "neutral/paused" state -> mid grey */

  --font-display: 'Instrument Serif', serif;   /* hero titles */
  --font-dot: 'DotGothic16', monospace;         /* LED / glyph-matrix accents */
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--ink);
  color: var(--chalk);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
}

a { color: inherit; }

button, input, select, textarea {
  font-family: var(--font-body);
  color: var(--chalk);
  background: var(--surface-raised);
  border: 1px solid var(--steel);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 14px;
}

button {
  cursor: pointer;
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  font-size: 12px;
  color: var(--ink);
  background: var(--brass);
  border: none;
  padding: 11px 18px;
  border-radius: 999px;
  transition: opacity 0.15s ease;
}
button:hover { opacity: 0.85; background: var(--brass); }
button.ghost {
  background: transparent;
  color: var(--chalk-dim);
  border: 1px solid var(--steel);
}
button.ghost:hover { color: var(--chalk); border-color: var(--chalk-dim); background: transparent; opacity: 1; }
button.danger { background: var(--iron-red); color: var(--ink); }

label { display: block; font-size: 11px; color: var(--chalk-dim); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.08em; }

/* ---------- Shell ---------- */

.shell-header {
  border-bottom: 1px solid var(--steel-soft);
  background: var(--ink);
}
.shell-header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 24px 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.brand {
  font-family: var(--font-display);
  font-size: 26px;
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--chalk);
}
.brand span { color: var(--brass); }

nav.tabs {
  display: flex;
  gap: 4px;
  margin-top: 16px;
}
nav.tabs a {
  font-family: var(--font-body);
  text-transform: uppercase;
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--chalk-dim);
  padding: 10px 16px;
  border-bottom: 2px solid transparent;
}
nav.tabs a.active {
  color: var(--chalk);
  border-bottom-color: var(--brass);
}
nav.tabs a:hover { color: var(--chalk); }

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.page-title {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 400;
  margin: 0 0 6px;
}
.page-subtitle {
  color: var(--chalk-dim);
  margin: 0 0 28px;
  font-size: 12px;
  font-family: var(--font-dot);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.card {
  background: var(--surface);
  border: 1px solid var(--steel-soft);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 20px;
}
.card h2 {
  font-family: var(--font-dot);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 400;
  color: var(--chalk-dim);
  margin: 0 0 18px;
}

.grid-2 { display: grid; grid-template-columns: 1.6fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 760px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ---------- Dashboard: calendar ---------- */

.month-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.month-nav .month-label {
  font-family: var(--font-display);
  font-size: 22px;
  font-style: italic;
  letter-spacing: 0.01em;
}
.month-nav .stat {
  font-family: var(--font-dot);
  color: var(--brass);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}
.cal-dow {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--chalk-dim);
  text-align: center;
  padding-bottom: 4px;
}
.cal-day {
  position: relative;
  aspect-ratio: 1;
  border: 1px solid var(--steel-soft);
  border-radius: 8px;
  background: var(--surface);
  padding: 7px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.cal-day.out-month { opacity: 0.28; }
.cal-day.today { border-color: var(--chalk); }
.cal-day .num { font-family: var(--font-dot); font-size: 14px; color: var(--chalk-dim); }
.cal-day.attended { background: var(--surface-raised); border-color: var(--brass); }
.cal-day.attended .num { color: var(--chalk); }
.cal-day.attended::after {
  content: "";
  position: absolute;
  top: 7px; right: 7px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brass);
  box-shadow: 0 0 6px rgba(255, 59, 48, 0.9);
}
.cal-day.phase-recovery { box-shadow: inset 0 0 0 1px var(--moss); }
.cal-day.phase-intense { box-shadow: inset 0 0 0 1px var(--iron-red); }
.cal-day.phase-deload { box-shadow: inset 0 0 0 1px var(--slate-blue); }
.cal-day .goal-dot {
  font-size: 9px;
  color: var(--iron-red);
  font-family: var(--font-dot);
  letter-spacing: 0.04em;
}
.cal-day form { margin: 0; }
.cal-day button.day-toggle {
  all: unset;
  position: absolute;
  inset: 0;
  cursor: pointer;
}

.legend { display: flex; gap: 18px; margin-top: 16px; flex-wrap: wrap; }
.legend-item { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--chalk-dim); font-family: var(--font-dot); letter-spacing: 0.03em; }
.legend-swatch { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

/* ---------- Training ---------- */

.trend-badge {
  font-family: var(--font-dot);
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border: 1px solid transparent;
}
.trend-up { background: transparent; color: var(--chalk); border-color: var(--chalk-dim); }
.trend-down { background: rgba(255, 59, 48, 0.12); color: var(--iron-red); border-color: var(--iron-red); }
.trend-stall { background: transparent; color: var(--slate-blue); border-color: var(--steel); }
.trend-new { background: transparent; color: var(--chalk-dim); border-color: var(--steel-soft); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--steel-soft); font-size: 13px; }
th { font-family: var(--font-body); text-transform: uppercase; font-size: 10px; letter-spacing: 0.08em; color: var(--chalk-dim); font-weight: 600; }
td.num, th.num { font-family: var(--font-mono); }

.exercise-row { cursor: default; }
.exercise-name { font-weight: 500; }
.exercise-muscle { color: var(--chalk-dim); font-size: 12px; }

/* Body muscle map */
.bodymap-wrap { display: flex; gap: 28px; justify-content: center; flex-wrap: wrap; }
.bodymap-figure { text-align: center; }
.bodymap-figure svg { width: 150px; height: auto; }
.bodymap-figure .cap { font-family: var(--font-dot); text-transform: uppercase; font-size: 11px; letter-spacing: 0.1em; color: var(--chalk-dim); margin-top: 8px; }
.tile { stroke: var(--steel); stroke-width: 1; transition: fill 0.2s ease, filter 0.2s ease; }
.tile-none { fill: var(--surface-raised); }
.tile-light { fill: #3A2422; }
.tile-moderate { fill: #7A2C26; }
.tile-heavy { fill: var(--brass); filter: drop-shadow(0 0 5px rgba(255, 59, 48, 0.65)); }

.week-nav { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.week-nav .week-label { font-family: var(--font-dot); color: var(--chalk-dim); font-size: 13px; letter-spacing: 0.03em; }

.load-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.load-chip { font-family: var(--font-dot); font-size: 10px; padding: 5px 10px; border-radius: 999px; border: 1px solid var(--steel); color: var(--chalk-dim); letter-spacing: 0.03em; }
.load-chip.heavy { border-color: var(--brass); color: var(--brass); }
.load-chip.light, .load-chip.moderate { border-color: #7A2C26; color: #E8756A; }

/* ---------- Forms ---------- */

.inline-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.field { display: flex; flex-direction: column; }
.field.grow { flex: 1; min-width: 140px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 12px; margin-bottom: 12px; }

/* ---------- Goals / Nutrition ---------- */

.goal-row { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--steel-soft); gap: 12px; flex-wrap: wrap; }
.goal-row:last-child { border-bottom: none; }
.goal-title { font-weight: 500; }
.goal-meta { color: var(--chalk-dim); font-size: 11px; font-family: var(--font-dot); letter-spacing: 0.02em; }
.status-pill { font-family: var(--font-dot); font-size: 10px; padding: 4px 10px; border-radius: 999px; text-transform: uppercase; border: 1px solid var(--steel); letter-spacing: 0.04em; }
.status-achieved { border-color: var(--chalk); color: var(--chalk); }
.status-in_progress { border-color: var(--brass); color: var(--brass); }
.status-planned { border-color: var(--steel); color: var(--chalk-dim); }

.phase-pill { font-family: var(--font-dot); font-size: 10px; padding: 4px 10px; border-radius: 999px; text-transform: uppercase; letter-spacing: 0.04em; border: 1px solid transparent; }
.phase-recovery-pill { background: transparent; color: var(--chalk); border-color: var(--chalk-dim); }
.phase-intense-pill { background: rgba(255,59,48,0.12); color: var(--iron-red); border-color: var(--iron-red); }
.phase-deload-pill { background: transparent; color: var(--slate-blue); border-color: var(--steel); }
.phase-normal-pill { background: transparent; color: var(--chalk-dim); border-color: var(--steel-soft); }

.empty-state { color: var(--chalk-dim); font-size: 13px; padding: 12px 0; font-family: var(--font-dot); letter-spacing: 0.02em; }