:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --surface: #f9fafb;
  --blue: #0a4bcf;
  --blue-dark: #07389a;
  --text: #1e2a3a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  --radius: 22px;
  --font: system-ui, -apple-system, "Inter", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  text-align: center;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

header {
  background: var(--card);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
}

header h1 {
  color: var(--blue);
}

.container {
  max-width: 1100px;
  margin: 40px auto;
  padding: 0 20px;
}

.layout {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.content h2 {
  color: var(--blue);
  margin-bottom: 12px;
}
.verse {
  color: var(--muted);
  line-height: 1.7;
}

/* BOTONES */
.actions-box {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  flex-direction: column;
  gap: 18px;
}

.btn {
  padding: 14px 28px;
  border-radius: 18px;
  font-weight: 700;
  text-decoration: none;
  transition: 0.25s;
  cursor: pointer;
  width: 100%;
}

.btn.primary {
  border: 2px solid var(--blue);
  color: var(--blue);
}
.btn.primary:hover {
  background: var(--blue-dark);
  transform: translateY(-4px);

  background: rgba(10, 75, 207, 0.12);
  transform: translateY(-4px);
}

.btn.secondary {
  background: var(--blue);
  color: #fff;
}
.btn.secondary:hover {
  background: var(--blue-dark);
  transform: translateY(-4px);
}

/* CALENDARIO */
.calendar-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 14px;
}

.calendar-header button {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  color: var(--muted);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.day {
  min-height: 44px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: pointer;

  /* CENTER CONTENT */
  display: flex;
  align-items: center;
  justify-content: center;

  font-weight: 600;
}

.day.selected {
  background: var(--blue);
  color: #fff;
}
.day.today {
  border: 2px solid var(--blue);
}

input[type="date"] {
  width: 100%;
  margin-top: 14px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
}

footer {
  text-align: center;
  padding: 24px;
  color: var(--muted);
}

/* =========================
   MOBILE HEADER TUNING
========================= */
@media (max-width: 480px) {
  header {
    padding: 12px 10px;
  }

  header h1 {
    font-size: 1.4rem;
    line-height: 1.2;
  }

  .container {
    margin-top: 20px;
  }
}

/* =========================
   MOBILE CONTENT PRIORITY
========================= */
@media (max-width: 768px) {
  .layout {
    gap: 18px;
  }

  /* TEXT + BUTTONS GO FULL WIDTH */
  .content {
    padding: 26px 20px;
  }

  /* Remove side spacing so card spans screen */
  .container {
    padding: 0;
  }

  .content.card {
    border-radius: 0;
    border-left: none;
    border-right: none;
    box-shadow: none;
  }

  /* Bigger buttons for thumbs */
  .btn {
    font-size: 1.05rem;
    padding: 16px 24px;
  }

  /* Calendar becomes secondary */
  .selector {
    margin-top: 16px;
  }
}