:root {
  color-scheme: dark;
  --bg: #060f24;
  --bg2: #04132f;
  --panel: rgba(6, 18, 42, 0.9);
  --text: #e9f0ff;
  --muted: #96a7cd;
  --line: rgba(111, 161, 255, 0.28);
  --cuerpo: #99f12b;
  --mente: #8e5dff;
  --tactica: #ff8a1f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background:
    linear-gradient(rgba(3, 10, 24, 0.78), rgba(3, 10, 24, 0.86)),
    url("./bg-padel.png") center / cover no-repeat fixed,
    linear-gradient(160deg, var(--bg) 0%, var(--bg2) 55%, #030a19 100%);
  color: var(--text);
  min-height: 100vh;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

.top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 16px;
  align-items: center;
}

.top-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.brand-icon {
  font-size: 1.8rem;
  filter: drop-shadow(0 0 8px rgba(187, 255, 40, 0.8));
}

.top h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-style: italic;
  letter-spacing: 0.02em;
}

.top-tags {
  margin: 0;
  color: #b6c6ec;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
}

.lang-btn {
  border: 1px solid rgba(132, 173, 255, 0.35);
  background: rgba(7, 21, 48, 0.82);
  border-radius: 8px;
  width: 42px;
  height: 32px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.lang-btn.active {
  border-color: rgba(189, 235, 255, 0.95);
  box-shadow: 0 0 12px rgba(104, 181, 255, 0.45);
}

.flag {
  width: 22px;
  height: 14px;
  border-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  display: inline-block;
}

.flag-ar {
  background:
    radial-gradient(circle at center, #f7ce3e 0 1.8px, transparent 2px),
    linear-gradient(to bottom, #74c9f6 0 33%, #ffffff 33% 66%, #74c9f6 66% 100%);
}

.flag-us {
  background-color: #ffffff;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 19 10'%3E%3Cpath fill='%23B22234' d='M0 0h19v10H0z'/%3E%3Cpath stroke='%23fff' stroke-width='.77' d='M0 1.15h19M0 2.69h19M0 4.23h19M0 5.77h19M0 7.31h19M0 8.85h19'/%3E%3Cpath fill='%233C3B6E' d='M0 0h7.6v5.38H0z'/%3E%3Cg fill='%23fff'%3E%3Ccircle cx='.8' cy='.7' r='.18'/%3E%3Ccircle cx='1.9' cy='.7' r='.18'/%3E%3Ccircle cx='3' cy='.7' r='.18'/%3E%3Ccircle cx='4.1' cy='.7' r='.18'/%3E%3Ccircle cx='5.2' cy='.7' r='.18'/%3E%3Ccircle cx='6.3' cy='.7' r='.18'/%3E%3Ccircle cx='1.35' cy='1.45' r='.18'/%3E%3Ccircle cx='2.45' cy='1.45' r='.18'/%3E%3Ccircle cx='3.55' cy='1.45' r='.18'/%3E%3Ccircle cx='4.65' cy='1.45' r='.18'/%3E%3Ccircle cx='5.75' cy='1.45' r='.18'/%3E%3Ccircle cx='.8' cy='2.2' r='.18'/%3E%3Ccircle cx='1.9' cy='2.2' r='.18'/%3E%3Ccircle cx='3' cy='2.2' r='.18'/%3E%3Ccircle cx='4.1' cy='2.2' r='.18'/%3E%3Ccircle cx='5.2' cy='2.2' r='.18'/%3E%3Ccircle cx='6.3' cy='2.2' r='.18'/%3E%3Ccircle cx='1.35' cy='2.95' r='.18'/%3E%3Ccircle cx='2.45' cy='2.95' r='.18'/%3E%3Ccircle cx='3.55' cy='2.95' r='.18'/%3E%3Ccircle cx='4.65' cy='2.95' r='.18'/%3E%3Ccircle cx='5.75' cy='2.95' r='.18'/%3E%3Ccircle cx='.8' cy='3.7' r='.18'/%3E%3Ccircle cx='1.9' cy='3.7' r='.18'/%3E%3Ccircle cx='3' cy='3.7' r='.18'/%3E%3Ccircle cx='4.1' cy='3.7' r='.18'/%3E%3Ccircle cx='5.2' cy='3.7' r='.18'/%3E%3Ccircle cx='6.3' cy='3.7' r='.18'/%3E%3Ccircle cx='1.35' cy='4.45' r='.18'/%3E%3Ccircle cx='2.45' cy='4.45' r='.18'/%3E%3Ccircle cx='3.55' cy='4.45' r='.18'/%3E%3Ccircle cx='4.65' cy='4.45' r='.18'/%3E%3Ccircle cx='5.75' cy='4.45' r='.18'/%3E%3C/g%3E%3C/svg%3E");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

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

.subtitle {
  grid-column: 1 / -1;
  margin-top: 8px;
  color: #b2c2e7;
  font-size: 1.25rem;
}

.day-banner {
  margin: 20px 0 24px;
  padding: 18px 16px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(10, 31, 70, 0.8), rgba(6, 18, 42, 0.9));
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 0 0 1px rgba(104, 163, 255, 0.16), 0 0 18px rgba(35, 105, 255, 0.25);
}

.day-week {
  font-weight: 700;
  color: #42a8ff;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.day-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.date-chip {
  border: 1px solid rgba(136, 179, 255, 0.35);
  border-radius: 8px;
  background: rgba(8, 17, 36, 0.85);
  color: #f3fbff;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 6px 12px;
  font-weight: 700;
}

.date-number,
.date-year {
  font-size: 2.6rem;
  line-height: 1;
  color: #d8f137;
}

.date-month {
  font-size: 2.3rem;
  line-height: 1;
}

.de-label {
  text-transform: uppercase;
  color: #c9d7f7;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

#cycleLabel {
  margin-top: 10px;
  color: #1da4ff;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.cards {
  display: grid;
  gap: 14px;
}

.card {
  background: linear-gradient(160deg, rgba(8, 20, 48, 0.94), rgba(5, 15, 37, 0.96));
  border: 1px solid rgba(111, 161, 255, 0.28);
  border-radius: 16px;
  padding: 14px;
  display: grid;
  grid-template-columns: 84px 1fr 42px;
  gap: 14px;
  align-items: center;
}

.card.cuerpo {
  box-shadow: inset 2px 0 0 var(--cuerpo);
}

.card.mente {
  box-shadow: inset 2px 0 0 var(--mente);
}

.card.tactica {
  box-shadow: inset 2px 0 0 var(--tactica);
}

.card-head {
  align-self: stretch;
  display: flex;
  align-items: center;
}

.card-icon {
  width: 66px;
  height: 66px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.9rem;
  border: 1px solid;
}

.card-icon.cuerpo {
  color: var(--cuerpo);
  border-color: rgba(153, 241, 43, 0.5);
  box-shadow: 0 0 12px rgba(153, 241, 43, 0.32);
}

.card-icon.mente {
  color: var(--mente);
  border-color: rgba(142, 93, 255, 0.5);
  box-shadow: 0 0 12px rgba(142, 93, 255, 0.32);
}

.card-icon.tactica {
  color: var(--tactica);
  border-color: rgba(255, 138, 31, 0.5);
  box-shadow: 0 0 12px rgba(255, 138, 31, 0.32);
}

.card-main {
  min-width: 0;
}

.card-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  gap: 12px;
}

.badge {
  display: inline-block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 8px;
  border-radius: 999px;
  color: #0a1730;
  font-weight: 700;
}

.badge.cuerpo { background: var(--cuerpo); }
.badge.mente { background: var(--mente); }
.badge.tactica { background: var(--tactica); }

.lesson-id {
  color: #9cb0db;
  font-size: 1.05rem;
  margin-left: auto;
}

.lesson-title {
  margin: 0 0 8px;
  font-size: clamp(1.5rem, 2.2vw, 2.05rem);
  line-height: 1.1;
}

.lesson-text {
  margin: 0 0 8px;
  line-height: 1.35;
  color: #bec9e8;
  font-size: 1.05rem;
}

.lesson-exercise {
  margin: 0;
  color: #d7e2ff;
  font-size: 1.05rem;
}

.card.cuerpo .lesson-exercise {
  color: rgba(170, 248, 86, 0.95);
}

.card.mente .lesson-exercise {
  color: rgba(186, 148, 255, 0.95);
}

.card.tactica .lesson-exercise {
  color: rgba(255, 173, 88, 0.95);
}

.card-arrow {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(98, 156, 255, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #5ca8ff;
  font-size: 1.8rem;
  line-height: 1;
}

.bottom-copy {
  margin: 24px 0 0;
  text-align: center;
  color: #aac0ea;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

@media (max-width: 900px) {
  .subtitle {
    font-size: 1rem;
  }
  .date-number,
  .date-year {
    font-size: 2rem;
  }
  .date-month {
    font-size: 1.75rem;
  }
}

@media (max-width: 640px) {
  .top {
    grid-template-columns: 1fr;
  }
  .top-right {
    order: 2;
    justify-content: space-between;
    width: 100%;
  }
  .card {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .card-head {
    justify-content: center;
  }
  .card-arrow {
    display: none;
  }
  .card-label-row {
    flex-wrap: wrap;
  }
}