/* ============================================================
   Giuliana Lencina — Biblioteca de recursos
   Estética: editorial cálida y minimalista
   ============================================================ */

:root {
  /* Superficies cálidas */
  --bg:        #f6f1e9;
  --bg-soft:   #efe8db;
  --surface:   #fffdf8;
  --line:      #e6ddce;
  --line-soft: #efe7d9;

  /* Tinta */
  --ink:       #221e18;
  --ink-soft:  #5a5247;
  --muted:     #948a79;

  /* Acento terracota */
  --accent:        #bd5d3a;
  --accent-press:  #a44c2d;
  --accent-tint:   #f3e0d4;

  /* Tonos de portada (cálidos) */
  --cover-1: #e7ddc9;
  --cover-2: #e4dacd;
  --cover-3: #ecdbcd;
  --cover-4: #dde2d3;

  --radius:    16px;
  --radius-sm: 11px;
  --maxw:      1120px;

  --serif: "Newsreader", Georgia, serif;
  --sans:  "Hanken Grotesk", system-ui, sans-serif;
}

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

html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  font-size: 16px;
}

::selection { background: var(--accent-tint); color: var(--ink); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------------- Header ---------------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 20;
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand { display: flex; align-items: baseline; gap: 11px; }
.brand .mark {
  font-family: var(--serif);
  font-size: 21px; font-weight: 500; letter-spacing: -0.01em;
}
.brand .mark em { font-style: italic; color: var(--accent); }
.brand .sub {
  font-size: 12.5px; color: var(--muted);
  letter-spacing: 0.02em;
}
.header-tag {
  font-size: 12px; color: var(--ink-soft);
  text-transform: uppercase; letter-spacing: 0.14em;
}

/* ---------------- Hero ---------------- */
.hero { padding: 76px 0 18px; }
.hero .eyebrow {
  font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--accent); font-weight: 600; margin-bottom: 22px;
  display: flex; align-items: center; gap: 12px;
}
.hero .eyebrow::before {
  content: ""; width: 34px; height: 1px; background: var(--accent);
}
.hero h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(40px, 6vw, 70px); line-height: 1.04;
  letter-spacing: -0.02em; max-width: 14ch;
  text-wrap: balance;
}
.hero h1 em { font-style: italic; color: var(--accent); }
.hero p {
  margin-top: 26px; max-width: 52ch; font-size: 18px;
  color: var(--ink-soft); text-wrap: pretty;
}
.hero .meta {
  margin-top: 34px; display: flex; gap: 28px; flex-wrap: wrap;
  font-size: 13.5px; color: var(--muted);
}
.hero .meta b { color: var(--ink); font-weight: 600; }

/* ---------------- Grilla ---------------- */
.library { padding: 54px 0 90px; }
.library-bar {
  display: flex; align-items: baseline; justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px; margin-bottom: 38px;
}
.library-bar h2 {
  font-family: var(--serif); font-weight: 500; font-size: 22px;
  letter-spacing: -0.01em;
}
.library-bar .count { font-size: 13.5px; color: var(--muted); }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px 30px;
}
@media (max-width: 860px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }

/* ---------------- Card ---------------- */
.card {
  display: flex; flex-direction: column;
  opacity: 0; transform: translateY(14px);
  animation: rise 0.6s cubic-bezier(.2,.7,.2,1) forwards;
}
@keyframes rise { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .card { opacity: 1; transform: none; animation: none; }
}

/* Portada tipográfica */
.cover {
  position: relative; aspect-ratio: 3 / 4;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 22px 22px 20px;
  display: flex; flex-direction: column;
  overflow: hidden;
  transition: transform .35s cubic-bezier(.2,.7,.2,1), box-shadow .35s;
}
.card:hover .cover {
  transform: translateY(-5px);
  box-shadow: 0 18px 40px -22px rgba(60,40,20,.4);
}
.cover .cat {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.16em;
  font-weight: 600; color: var(--ink-soft);
}
.cover .num {
  position: absolute; top: 18px; right: 22px;
  font-family: var(--serif); font-size: 15px; font-style: italic;
  color: var(--ink-soft); opacity: .6;
}
.cover .ctitle {
  margin-top: auto;
  font-family: var(--serif); font-weight: 400;
  font-size: 27px; line-height: 1.08; letter-spacing: -0.015em;
  color: var(--ink); text-wrap: balance;
}
.cover .rule { height: 1px; background: rgba(34,30,24,.18); margin: 16px 0 12px; }
.cover . cfoot { }
.cover .cfoot {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 11.5px; letter-spacing: 0.06em; color: var(--ink-soft);
}
.cover .cfoot .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); display: inline-block; margin-right: 7px;
}
.cover .pdf-badge { font-weight: 600; text-transform: uppercase; letter-spacing: 0.12em; }

/* Cuerpo de la tarjeta */
.card-body { padding: 16px 4px 0; }
.card-body h3 {
  font-family: var(--serif); font-weight: 500; font-size: 19px;
  letter-spacing: -0.01em; line-height: 1.2;
}
.card-body p {
  margin-top: 7px; font-size: 14px; color: var(--ink-soft);
  text-wrap: pretty; min-height: 2.8em;
}
.card-foot {
  margin-top: 15px; display: flex; align-items: center;
  justify-content: space-between; gap: 12px;
}
.card-meta { font-size: 12.5px; color: var(--muted); letter-spacing: 0.02em; }

/* Botón descargar */
.btn-dl {
  appearance: none; border: 1px solid var(--ink);
  background: var(--ink); color: var(--bg);
  font-family: var(--sans); font-size: 13.5px; font-weight: 600;
  padding: 9px 16px; border-radius: 999px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  transition: background .2s, border-color .2s, transform .12s;
  white-space: nowrap;
}
.btn-dl:hover { background: var(--accent); border-color: var(--accent); }
.btn-dl:active { transform: scale(.97); }
.btn-dl svg { width: 14px; height: 14px; }

/* ---------------- Footer ---------------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
  padding: 46px 0;
}
.site-footer .wrap {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.site-footer .mark { font-family: var(--serif); font-size: 18px; }
.site-footer .mark em { font-style: italic; color: var(--accent); }
.site-footer small { color: var(--muted); font-size: 13px; }

/* ---------------- Modal ---------------- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(34,28,20,.42); backdrop-filter: blur(5px);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  opacity: 0; pointer-events: none; transition: opacity .28s;
}
.modal-backdrop.open { opacity: 1; pointer-events: auto; }
.modal {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 20px; width: 100%; max-width: 430px;
  padding: 34px 34px 30px;
  box-shadow: 0 40px 90px -30px rgba(50,30,10,.45);
  transform: translateY(16px) scale(.98); transition: transform .28s cubic-bezier(.2,.7,.2,1);
}
.modal-backdrop.open .modal { transform: none; }
.modal .eyebrow {
  font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--accent); font-weight: 600; margin-bottom: 12px;
}
.modal h3 {
  font-family: var(--serif); font-weight: 400; font-size: 26px;
  line-height: 1.12; letter-spacing: -0.015em; text-wrap: balance;
}
.modal .modal-sub { margin-top: 12px; font-size: 14.5px; color: var(--ink-soft); }
.field { margin-top: 18px; }
.field label {
  display: block; font-size: 12.5px; font-weight: 600;
  color: var(--ink-soft); margin-bottom: 6px; letter-spacing: 0.01em;
}
.field input {
  width: 100%; font-family: var(--sans); font-size: 15px;
  padding: 11px 14px; border: 1px solid var(--line);
  border-radius: 11px; background: #fff; color: var(--ink);
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-tint);
}
.field .err { display: none; color: var(--accent-press); font-size: 12.5px; margin-top: 6px; }
.field.invalid .err { display: block; }
.field.invalid input { border-color: var(--accent-press); }

.modal-submit {
  margin-top: 22px; width: 100%;
  appearance: none; border: none; cursor: pointer;
  background: var(--ink); color: var(--bg);
  font-family: var(--sans); font-weight: 600; font-size: 15px;
  padding: 13px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; gap: 9px;
  transition: background .2s, transform .12s;
}
.modal-submit:hover { background: var(--accent); }
.modal-submit:active { transform: scale(.99); }
.modal-submit svg { width: 16px; height: 16px; }
.modal .fineprint {
  margin-top: 15px; font-size: 12px; color: var(--muted);
  text-align: center; line-height: 1.5;
}
.modal-close {
  position: absolute; top: 18px; right: 20px;
  background: none; border: none; font-size: 22px; color: var(--muted);
  cursor: pointer; line-height: 1; padding: 4px;
}
.modal { position: relative; }

/* Estado de éxito */
.modal-success { text-align: center; display: none; }
.modal.done .modal-form { display: none; }
.modal.done .modal-success { display: block; }
.modal-success .check {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--accent-tint); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  margin: 4px auto 18px;
}
.modal-success .check svg { width: 26px; height: 26px; }
.modal-success h3 { margin-bottom: 10px; }
.modal-success p { font-size: 14.5px; color: var(--ink-soft); }
.modal-success a.again {
  display: inline-block; margin-top: 18px; font-size: 13.5px;
  color: var(--accent); font-weight: 600; text-decoration: none;
  border-bottom: 1px solid var(--accent-tint); cursor: pointer;
}

/* Toast */
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: var(--bg); font-size: 14px;
  padding: 12px 20px; border-radius: 999px; z-index: 60;
  opacity: 0; transition: opacity .25s, transform .25s;
  display: flex; align-items: center; gap: 9px;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast svg { width: 15px; height: 15px; }