:root {
  color-scheme: light;
  --ink: #17313a;
  --muted: #5f747a;
  --sea: #08778a;
  --sea-dark: #075465;
  --sky: #e6f6f8;
  --coral: #f36f4f;
  --coral-soft: #ffe1d7;
  --sun: #ffd36e;
  --cream: #fff7e9;
  --paper: #fcfaf3;
  --line: #d7e1de;
  --panel: #ffffff;
  --shadow: 0 18px 44px rgba(8, 119, 138, .13);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html {
  overflow-x: hidden;
  background: var(--paper);
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  line-height: 1.55;
}

a { color: var(--sea); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 247, 233, .96);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  max-width: 1180px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .85rem 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: .65rem;
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  width: 40px;
  height: 40px;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: .78rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  justify-content: flex-end;
}

.nav a {
  padding: .45rem .62rem;
  border-radius: 999px;
  color: var(--ink);
  text-decoration: none;
}

.nav a:hover,
.nav a:focus-visible {
  background: var(--coral-soft);
}

.planner-hero {
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(360px, 1.12fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  padding: clamp(44px, 7vw, 86px) clamp(16px, 5vw, 72px);
  background:
    linear-gradient(135deg, rgba(8,119,138,.96), rgba(8,138,154,.82)),
    repeating-linear-gradient(90deg, rgba(255,255,255,.12) 0 1px, transparent 1px 80px);
  color: white;
}

.hero-copy,
.calendar-wall,
.date-desk,
.agenda,
.source-ribbon {
  max-width: 1180px;
}

.hero-copy {
  justify-self: end;
  width: 100%;
}

.eyebrow {
  margin: 0 0 .7rem;
  color: var(--sun);
  font-size: .8rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.1;
  letter-spacing: 0;
}

h1 {
  max-width: 11ch;
  font-size: clamp(3rem, 7vw, 6.5rem);
}

h2 { font-size: clamp(1.8rem, 3.4vw, 3rem); }
h3 { font-size: 1.12rem; }

.lead {
  max-width: 58ch;
  margin: 1rem 0 0;
  color: rgba(255,255,255,.9);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.6rem;
}

.button,
button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: .76rem 1rem;
  border: 0;
  border-radius: 999px;
  background: var(--coral);
  color: white;
  font-weight: 900;
  text-decoration: none;
  cursor: pointer;
}

.button.secondary {
  background: #fff;
  color: var(--sea-dark);
}

.calendar-wall {
  width: 100%;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid rgba(255,255,255,.45);
  background: var(--cream);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.wall-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.wall-header strong {
  color: var(--sea-dark);
  font-size: clamp(2.3rem, 5vw, 4.2rem);
  line-height: 1;
}

.wall-header span {
  color: var(--muted);
  font-weight: 800;
}

.month-board,
.month-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .55rem;
}

.month-board span,
.month-strip span {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #f0d6c7;
  background: #fff;
  color: var(--ink);
  font-weight: 950;
}

.month-board .bridge,
.month-strip .hot {
  background: var(--coral-soft);
  color: #8f2d1f;
}

.date-desk {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: 1rem;
  margin: clamp(30px, 5vw, 60px) auto 0;
  padding: 0 clamp(16px, 5vw, 72px);
}

.calculator,
.result,
.panel,
.puente,
.holiday-chip {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 10px 24px rgba(25,52,58,.05);
}

.calculator {
  padding: clamp(18px, 4vw, 30px);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
  margin-top: 1.2rem;
}

label {
  display: grid;
  gap: .32rem;
  font-weight: 850;
}

label span {
  color: var(--muted);
  font-size: .9rem;
  font-weight: 650;
}

input,
select {
  width: 100%;
  border: 1px solid #b8cac7;
  background: #fff;
  color: var(--ink);
  padding: .72rem .75rem;
  font: inherit;
}

.check-option {
  display: flex;
  align-items: center;
  gap: .55rem;
}

.check-option input {
  width: auto;
}

.result {
  display: grid;
  align-content: center;
  padding: clamp(18px, 4vw, 30px);
  background: var(--cream);
  border-color: #f0d6c7;
}

.result-kicker {
  color: var(--coral);
  font-weight: 950;
  text-transform: uppercase;
}

.result-number {
  margin: .1rem 0;
  color: var(--sea-dark);
  font-size: clamp(4rem, 10vw, 7rem);
  font-weight: 950;
  line-height: .95;
}

.agenda {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: 1.2rem;
  margin: clamp(34px, 6vw, 72px) auto 0;
  padding: 0 clamp(16px, 5vw, 72px);
}

.agenda-list {
  display: grid;
  gap: .7rem;
}

.agenda-list a {
  display: grid;
  grid-template-columns: 52px minmax(130px, .45fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  text-decoration: none;
}

.agenda-list a:hover,
.agenda-list a:focus-visible {
  border-color: var(--coral);
}

.agenda-list time {
  color: var(--coral);
  font-weight: 950;
}

.agenda-list span,
.panel p,
.puente p {
  color: var(--muted);
}

.source-ribbon {
  margin: clamp(34px, 6vw, 70px) auto 0;
  padding: 0 clamp(16px, 5vw, 72px);
}

.source-ribbon p,
.notice {
  margin: 0;
  border-left: 5px solid var(--sea);
  background: #eaf7f6;
  padding: 1rem 1.1rem;
}

.section {
  max-width: 1160px;
  margin: 0 auto;
  padding: 2.45rem 1rem;
}

.tool-row {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 1rem;
}

.cards,
.holiday-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.panel,
.puente,
.holiday-chip {
  padding: 1rem;
}

.puente strong {
  display: inline-flex;
  margin-bottom: .55rem;
  padding: .25rem .45rem;
  background: var(--coral-soft);
  color: #8b2e1d;
}

.holiday-chip {
  min-height: 6.2rem;
}

.holiday-chip time {
  display: block;
  color: var(--coral);
  font-weight: 900;
}

.holiday-chip small {
  display: block;
  margin-top: .25rem;
  color: var(--muted);
}

.site-footer {
  margin-top: 2rem;
  padding: 2rem 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer-inner {
  display: flex;
  max-width: 1160px;
  margin: 0 auto;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-inner nav {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
}

@media (max-width: 900px) {
  .header-inner,
  .planner-hero,
  .date-desk,
  .agenda,
  .tool-row,
  .cards,
  .holiday-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    justify-self: start;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(2.45rem, 10vw, 4rem);
    overflow-wrap: anywhere;
  }

  .lead {
    overflow-wrap: anywhere;
  }

  .nav {
    justify-content: flex-start;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .month-board,
  .month-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .planner-hero {
    padding: 34px 16px;
  }

  .date-desk,
  .agenda,
  .source-ribbon {
    padding: 0 16px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .month-board,
  .month-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .month-board span,
  .month-strip span {
    min-height: 56px;
  }

  .agenda-list a {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .agenda-list span {
    grid-column: 2;
  }
}