:root {
  --bg: #0c0c11;
  --card: #15151d;
  --line: #262633;
  --text: #f2f2f5;
  --dim: #9b9ba8;
  --good: #4ade80;
  --bad: #f87171;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(600px 320px at 15% -5%, #ff8a3d22, transparent),
    radial-gradient(600px 320px at 85% -5%, #38bdf822, transparent),
    var(--bg);
}

header { text-align: center; padding: 40px 16px 24px; }
h1 { margin: 0; font-size: 2rem; letter-spacing: -0.02em; }
h1 .fire { display: inline-block; animation: flicker 1.6s ease-in-out infinite; }
#week-label { color: var(--dim); margin: 6px 0 0; }

#cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  max-width: 840px;
  margin: 0 auto;
  padding: 8px 20px;
}
.loading { grid-column: 1 / -1; text-align: center; color: var(--dim); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: 20px;
  padding: 24px 22px 18px;
  text-align: center;
  box-shadow: 0 12px 32px #0006;
}
.user-0 { --accent: #ff8a3d; --accent-2: #ff4d6d; }
.user-1 { --accent: #38bdf8; --accent-2: #818cf8; }

.card-head { display: flex; justify-content: center; align-items: center; gap: 6px; }
.name {
  background: none;
  border: none;
  border-bottom: 1.5px dashed transparent;
  color: var(--text);
  font: inherit;
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
  width: 11ch;
  padding: 2px;
}
.name:hover, .name:focus { border-bottom-color: var(--dim); outline: none; }
.crown { font-size: 1.2rem; }

.flame {
  margin: 14px 0 4px;
  animation: flicker 1.6s ease-in-out infinite;
  transition: font-size 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.5s;
}
.lvl-0 { font-size: 2rem; filter: grayscale(1); opacity: 0.3; }
.lvl-1 { font-size: 2.3rem; filter: drop-shadow(0 0 8px #ff8a3d66); }
.lvl-2 { font-size: 3rem; filter: drop-shadow(0 0 14px #ff8a3d88); }
.lvl-3 { font-size: 3.8rem; filter: drop-shadow(0 0 20px #ff8a3daa); }
.lvl-4 { font-size: 4.6rem; filter: drop-shadow(0 0 26px #ff9d3d) drop-shadow(0 0 60px #ff4d0044); }
@keyframes flicker {
  0%, 100% { transform: scale(1) rotate(-2deg); }
  50% { transform: scale(1.07) rotate(2deg); }
}

.streak b { font-size: 2.2rem; }
.streak span {
  display: block;
  color: var(--dim);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.msg { color: var(--dim); font-size: 0.9rem; min-height: 2.4em; }

.bar { height: 8px; border-radius: 99px; background: var(--line); overflow: hidden; }
.bar div {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.6s;
}
.stats { color: var(--dim); font-size: 0.85rem; }
.stats b { color: var(--text); }

.week { display: flex; justify-content: center; gap: 7px; margin: 14px 0 18px; }
.day {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: none;
  color: var(--dim);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, background 0.2s, border-color 0.2s;
}
.day:hover { transform: scale(1.12); }
.day.planned { border-color: var(--accent); border-style: dashed; }
.day.done { background: var(--accent); border: 2px solid var(--accent); color: #101014; }
.day.missed { border-color: var(--bad); color: var(--bad); text-decoration: line-through; }
.day.today { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent); }
.day.future { opacity: 0.4; cursor: default; }
.day.future:hover { transform: none; }

.checkin { min-height: 48px; display: flex; align-items: center; justify-content: center; }
.log-btn {
  border: none;
  border-radius: 99px;
  padding: 12px 22px;
  font: inherit;
  font-weight: 700;
  color: #101014;
  cursor: pointer;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 35%, transparent);
  transition: transform 0.15s, box-shadow 0.15s;
}
.log-btn:hover { transform: translateY(-2px); box-shadow: 0 9px 24px color-mix(in srgb, var(--accent) 45%, transparent); }
.log-btn:active { transform: scale(0.96); }

.types { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.types[hidden] { display: none; }
.type {
  border: 1.5px solid var(--line);
  background: none;
  color: var(--text);
  border-radius: 99px;
  padding: 8px 12px;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
}
.type:hover { border-color: var(--accent); transform: translateY(-1px); }

.logged { color: var(--good); font-weight: 600; margin: 10px 0; }

.workout { display: flex; flex-direction: column; gap: 6px; margin: 4px 0 14px; }
.workout-title {
  color: var(--dim);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin: 0 0 2px;
}
.exercise {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  background: #ffffff08;
  border-radius: 12px;
  padding: 10px 14px;
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.1s;
}
.exercise:hover { border-color: var(--accent); }
.exercise:active { transform: scale(0.98); }
.exercise:disabled { opacity: 0.55; cursor: default; }
.exercise:disabled:hover { border-color: var(--line); }

.day-tabs { display: flex; justify-content: center; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.day-tab {
  border: 1.5px solid var(--line);
  background: none;
  color: var(--dim);
  border-radius: 99px;
  padding: 5px 12px;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.day-tab:hover { border-color: var(--accent); }
.day-tab.sel { background: var(--accent); border-color: var(--accent); color: #101014; }
.day-tab.istoday:not(.sel) { border-color: color-mix(in srgb, var(--accent) 50%, transparent); color: var(--text); }
.rest { color: var(--dim); font-size: 0.85rem; margin: 6px 0; }
.ex-name { text-align: left; }
.ex-sets {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.pips { color: var(--accent); letter-spacing: 2px; font-size: 0.7rem; }
.exercise.complete { border-color: color-mix(in srgb, var(--good) 45%, transparent); background: #4ade8012; }
.exercise.complete .ex-name { text-decoration: line-through; color: var(--dim); }
.exercise.complete .ex-sets, .exercise.complete .pips { color: var(--good); }

.card details { margin-top: 14px; }
.card summary { color: var(--dim); font-size: 0.85rem; cursor: pointer; }
.card summary:hover { color: var(--text); }
.prog-text {
  width: 100%;
  margin-top: 10px;
  background: #ffffff08;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  font: inherit;
  font-size: 0.85rem;
  line-height: 1.5;
  padding: 10px 12px;
  resize: vertical;
}
.prog-text:focus { outline: none; border-color: var(--accent); }
.prog-save {
  margin-top: 8px;
  border: 1.5px solid var(--line);
  background: none;
  color: var(--text);
  border-radius: 99px;
  padding: 8px 16px;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.2s;
}
.prog-save:hover { border-color: var(--accent); }
.plan { display: flex; justify-content: center; gap: 7px; margin-top: 12px; }
.plan-day {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: 2px solid var(--line);
  background: none;
  color: var(--dim);
  font: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.plan-day.on { background: var(--accent); border-color: var(--accent); color: #101014; }

#verdict { text-align: center; color: var(--dim); padding: 26px 16px 40px; font-size: 0.95rem; }
#verdict b { color: var(--text); }

.confetti {
  position: fixed;
  z-index: 10;
  pointer-events: none;
  font-size: 1.1rem;
  animation: burst 0.9s ease-out forwards;
}
@keyframes burst {
  to { transform: translate(var(--dx), var(--dy)) rotate(var(--rot)) scale(0.3); opacity: 0; }
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: #2a2a35;
  color: var(--text);
  padding: 10px 18px;
  border-radius: 99px;
  border: 1px solid var(--line);
  box-shadow: 0 8px 24px #0008;
  z-index: 20;
  font-size: 0.9rem;
}

:is(.day, .type, .plan-day, .log-btn, .name):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}