/* Layout: una sola columna centrada, mucho aire, bandas separadas por líneas finas.
   Color: papel frío + tinta pizarra + un único acento bronce (valor). Type: Spectral (display serif),
   IBM Plex Sans (texto), IBM Plex Mono (cifras y etiquetas). */
:root {
  --paper: #f6f6f3;
  --surface: #ffffff;
  --ink: #1a2130;
  --muted: #5a6373;
  --line: #e3e2db;
  --accent: #9a6a34;
  --accent-ink: #ffffff;

  --display: "Spectral", Georgia, "Times New Roman", serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, Segoe UI, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --wrap: 62rem;
  --gutter: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #11141a;
    --surface: #171b23;
    --ink: #e9eaee;
    --muted: #9aa1ae;
    --line: #262b35;
    --accent: #c89552;
    --accent-ink: #14100a;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #11141a;
  --surface: #171b23;
  --ink: #e9eaee;
  --muted: #9aa1ae;
  --line: #262b35;
  --accent: #c89552;
  --accent-ink: #14100a;
  color-scheme: dark;
}

* { box-sizing: border-box; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--display); font-weight: 500; text-wrap: balance; line-height: 1.12; margin: 0; }
p { margin: 0; }
a { color: inherit; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter-r);
}

/* Top bar */
.topbar { border-bottom: 1px solid var(--line); }
.topbar .wrap {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: 1.1rem;
}
.brand { display: flex; align-items: baseline; gap: .55rem; font-family: var(--display); font-size: 1.25rem; letter-spacing: -.01em; }
.brand b { font-weight: 600; }
.brand span { color: var(--accent); font-weight: 500; }
.topbar .mini {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted);
}

.eyebrow {
  font-family: var(--mono); font-size: .74rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 1.25rem;
}

/* Hero */
.hero .wrap { padding-block: clamp(3.5rem, 9vw, 6.5rem) clamp(3rem, 7vw, 5rem); }
.hero h1 { font-size: clamp(2.3rem, 6vw, 3.9rem); letter-spacing: -.015em; max-width: 18ch; }
.hero .lede { color: var(--muted); font-size: clamp(1.05rem, 2.2vw, 1.22rem); max-width: 54ch; margin-top: 1.6rem; }
.actions { display: flex; flex-wrap: wrap; gap: 1rem 1.25rem; align-items: center; margin-top: 2.4rem; }

.btn {
  display: inline-flex; align-items: center; gap: .6rem;
  background: var(--accent); color: var(--accent-ink);
  font-family: var(--body); font-size: 1rem; font-weight: 600;
  border: 0; border-radius: 2px; padding: .9rem 1.5rem; cursor: pointer;
  text-decoration: none; transition: transform .15s ease, filter .15s ease;
}
.btn:hover { filter: brightness(1.06); transform: translateY(-1px); }
.btn .arr { transition: transform .15s ease; }
.btn:hover .arr { transform: translateX(3px); }
.btn.ghost { background: transparent; color: var(--ink); padding: .9rem 0; }
.btn.ghost:hover { filter: none; transform: none; color: var(--accent); }

.divide { border-top: 1px solid var(--line); }

/* Value trio */
.trio .wrap { padding-block: clamp(3rem, 7vw, 4.5rem); }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
.item .num { font-family: var(--mono); font-size: .8rem; color: var(--accent); letter-spacing: .1em; }
.item h3 { font-size: 1.28rem; margin-top: .9rem; }
.item p { color: var(--muted); font-size: .97rem; margin-top: .55rem; }

/* Coverage */
.cover .wrap { padding-block: clamp(3rem, 7vw, 4.5rem); display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 3rem; align-items: start; }
.cover h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); max-width: 16ch; }
.cover .note { color: var(--muted); margin-top: 1.1rem; max-width: 42ch; }
.instruments { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--line); }
.instruments li { list-style: none; padding: .95rem .25rem; border-bottom: 1px solid var(--line); display: flex; align-items: baseline; gap: .7rem; }
.instruments li .tick { color: var(--accent); font-family: var(--mono); font-size: .85rem; }
.instruments li span { font-size: .98rem; }

/* Agendar */
.book { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.book .wrap { padding-block: clamp(3.5rem, 8vw, 5.5rem); display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: start; }
.book h2 { font-size: clamp(1.9rem, 4vw, 2.6rem); max-width: 14ch; }
.book .lede { color: var(--muted); margin-top: 1.1rem; max-width: 40ch; }
.meta { margin-top: 2rem; display: grid; gap: 1rem; }
.meta div { display: flex; gap: .8rem; align-items: baseline; }
.meta .k { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); min-width: 5.5rem; }
.meta .v { font-size: .98rem; }
.meta .v.copy { cursor: pointer; border: 0; background: none; font: inherit; color: var(--ink); padding: 0; text-align: left; }
.meta .v.copy:hover { color: var(--accent); }

form { display: grid; gap: 1.1rem; }
.field { display: grid; gap: .4rem; }
label { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
input, textarea, select {
  font-family: var(--body); font-size: .98rem; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line); border-radius: 2px;
  padding: .7rem .8rem; width: 100%;
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
textarea { resize: vertical; min-height: 4.5rem; }
form .btn { justify-content: center; margin-top: .3rem; }

.done {
  border: 1px solid var(--accent); border-radius: 2px; padding: 1.5rem;
  background: color-mix(in srgb, var(--accent) 8%, var(--surface));
}
.done h3 { font-size: 1.3rem; }
.done p { color: var(--muted); margin-top: .5rem; font-size: .96rem; }

footer .wrap { padding-block: 2.2rem; display: flex; flex-wrap: wrap; gap: .6rem 1.5rem; justify-content: space-between; align-items: center; color: var(--muted); font-size: .85rem; }
footer .mono { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }

@media (max-width: 760px) {
  .grid3 { grid-template-columns: 1fr; gap: 1.8rem; }
  .cover .wrap { grid-template-columns: 1fr; gap: 1.8rem; }
  .book .wrap { grid-template-columns: 1fr; gap: 2.2rem; }
}
@media (max-width: 460px) {
  .instruments { grid-template-columns: 1fr; }
  .row2 { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }