/* =========================================================
   framework.css — estilos de las páginas de framework
   (marco-4t.html · adopcion-ia.html)
   Namespaced con prefijo .f- para no colisionar con la central.
   Hereda los tokens de styles.css.
   ========================================================= */

#progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: var(--color-amber); z-index: 200; transition: width .1s linear;
}

.f-texture {
  background-image:
    repeating-linear-gradient(45deg, rgba(255,255,255,.09) 0, rgba(255,255,255,.09) 1px, transparent 1px, transparent 22px),
    repeating-linear-gradient(-45deg, rgba(255,255,255,.06) 0, rgba(255,255,255,.06) 1px, transparent 1px, transparent 22px);
}

.f-wrap { max-width: 880px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 640px) { .f-wrap { padding: 0 22px; } }

/* ---------- HERO ---------- */
.f-hero {
  background: var(--color-teal); color: #fff; position: relative; overflow: hidden;
  padding: 150px 0 96px;
}
.f-hero .f-texture { position: absolute; inset: 0; pointer-events: none; }
.f-hero .f-wrap { position: relative; z-index: 2; }
.f-kicker { font-size: 13px; font-weight: 700; letter-spacing: .3em; text-transform: uppercase; color: var(--color-amber); }
.f-h1 {
  font-family: var(--font-serif); font-weight: 400; font-size: clamp(46px, 8vw, 92px);
  line-height: .94; margin: 16px 0 6px; letter-spacing: -1px; color: #fff;
}
.f-h1 .dot { color: var(--color-amber); }
.f-hero .f-sub {
  font-family: var(--font-serif); font-size: clamp(22px, 4vw, 38px); font-weight: 400;
  color: rgba(255,255,255,.88); line-height: 1.06;
}
.f-hero .f-sub .dot { color: var(--color-amber); }
.f-hero .f-lede {
  font-size: clamp(16px, 2.4vw, 20px); font-style: italic; color: rgba(255,255,255,.78);
  max-width: 620px; margin-top: 28px; line-height: 1.5;
}
.f-author {
  margin-top: 48px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.22);
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
}
.f-author .name { font-family: var(--font-serif); font-size: 22px; color: #fff; line-height: 1.15; }
.f-author .roles { font-size: 14px; color: rgba(255,255,255,.7); }
.f-author .meta { font-size: 13px; color: rgba(255,255,255,.5); margin-top: 6px; }

.f-attrib {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 26px;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius-pill); padding: 8px 8px 8px 16px; text-decoration: none;
  transition: background .2s ease;
}
.f-attrib:hover { background: rgba(255,255,255,.14); }
.f-attrib .lbl { font-size: 13px; color: rgba(255,255,255,.8); }
.f-attrib .chip { background: #fff; color: var(--color-teal); font-weight: 700; font-size: 12px; padding: 5px 12px; border-radius: var(--radius-pill); }

/* ---------- SECTION SCAFFOLDING ---------- */
.f-sec { padding: 80px 0; }
@media (max-width: 640px) { .f-sec { padding: 56px 0; } }
.f-num { font-size: 12.5px; font-weight: 700; letter-spacing: .3em; text-transform: uppercase; color: var(--color-amber); margin-bottom: 14px; }
.f-h2 { font-family: var(--font-serif); font-weight: 400; font-size: clamp(28px, 4.6vw, 42px); color: var(--color-teal); line-height: 1.08; letter-spacing: -.5px; margin-bottom: 22px; }
.f-h3 { font-family: var(--font-serif); font-weight: 400; font-size: clamp(21px, 3vw, 27px); color: var(--color-teal); margin: 32px 0 12px; }
.f-p { margin-bottom: 18px; color: var(--color-text); }
.f-p.lead { font-size: 19px; color: #33373b; }
.f-band { background: var(--color-gray-blue); }
.f-band-dark { background: var(--color-teal); color: #fff; position: relative; overflow: hidden; }
.f-band-dark .f-texture { position: absolute; inset: 0; pointer-events: none; }
.f-band-dark .f-wrap { position: relative; z-index: 2; }
.f-band-dark .f-h2, .f-band-dark .f-h3 { color: #fff; }
.f-band-dark .f-p { color: rgba(255,255,255,.85); }
.f-endrule { height: 1px; background: var(--color-gray-line); max-width: 880px; margin: 0 auto; }
.f-closer { text-align: center; font-family: var(--font-serif); font-size: 40px; color: var(--color-amber); padding: 28px 0 0; }

/* ---------- STAT CARDS ---------- */
.f-stats { display: flex; flex-direction: column; gap: 14px; margin: 32px 0; }
.f-stat { display: grid; grid-template-columns: 150px 1fr; border: 1px solid var(--color-gray-line); border-radius: 12px; overflow: hidden; background: #fff; box-shadow: 0 1px 3px rgba(13,75,92,.05); }
.f-stat .num { background: var(--color-teal); color: #fff; font-family: var(--font-serif); font-size: 44px; display: flex; align-items: center; justify-content: center; padding: 24px 10px; line-height: 1; }
.f-stat:nth-child(even) .num { background: var(--color-teal-soft); }
.f-stat .txt { padding: 20px 24px; display: flex; align-items: center; font-size: 16px; color: #2a2e31; }
.f-stat .txt b { color: var(--color-teal); }
@media (max-width: 560px) { .f-stat { grid-template-columns: 1fr; } .f-stat .num { padding: 18px; font-size: 38px; } }

/* ---------- PULL QUOTE ---------- */
.f-quote { border-left: 4px solid var(--color-amber); background: var(--color-gray-blue); border-radius: 0 12px 12px 0; padding: 24px 30px; margin: 30px 0; }
.f-band-dark .f-quote { background: rgba(255,255,255,.07); }
.f-quote p { font-family: var(--font-serif); font-size: 22px; font-style: italic; color: var(--color-teal); margin: 0; line-height: 1.4; }
.f-band-dark .f-quote p { color: #fff; }
.f-quote cite { display: block; margin-top: 12px; font-family: var(--font-sans); font-style: normal; font-size: 15px; font-weight: 700; color: var(--color-amber); }

/* ---------- AXIS CARDS ---------- */
.f-axes { display: flex; flex-direction: column; gap: 22px; margin-top: 32px; }
.f-axis { border: 1px solid var(--color-gray-line); border-radius: 14px; overflow: hidden; background: #fff; transition: transform .3s, box-shadow .3s; }
.f-axis:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(13,75,92,.13); }
.f-axis-head { display: flex; align-items: stretch; }
.f-axis-tag { background: var(--color-teal); color: #fff; font-family: var(--font-serif); font-size: 38px; min-width: 96px; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.f-axis-tag .f-texture { position: absolute; inset: 0; }
.f-axis-tag span { position: relative; z-index: 2; }
.f-axis-title { background: var(--color-gray-blue); padding: 18px 24px; flex: 1; }
.f-axis-title .name { font-family: var(--font-serif); font-size: 22px; color: var(--color-teal); line-height: 1.1; }
.f-axis-title .desc { font-size: 14px; font-style: italic; color: var(--color-teal-soft); margin-top: 4px; }
.f-axis-body { padding: 22px 28px 26px; }
.f-axis-body .f-p { margin-bottom: 14px; }
.f-ignore { margin-top: 4px; font-size: 15px; border-top: 1px dashed var(--color-gray-line); padding-top: 16px; color: var(--color-text-soft); }
.f-ignore b { color: var(--color-amber); display: block; margin-bottom: 3px; font-size: 12px; letter-spacing: .04em; text-transform: uppercase; }
@media (max-width: 560px) { .f-axis-tag { min-width: 64px; font-size: 30px; } .f-axis-body { padding: 18px 20px; } }

/* ---------- SEQUENCE STRIP ---------- */
.f-seq { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 28px 0 6px; }
.f-seq .step { background: #fff; border: 1px solid var(--color-gray-line); border-radius: 10px; padding: 16px 12px; text-align: center; position: relative; }
.f-seq .step .t { font-family: var(--font-serif); color: var(--color-amber); font-size: 22px; }
.f-seq .step .n { font-size: 12.5px; color: var(--color-text-soft); margin-top: 2px; line-height: 1.25; }
.f-seq .arrow { position: absolute; right: -9px; top: 50%; transform: translateY(-50%); color: var(--color-amber); font-size: 18px; z-index: 3; }
@media (max-width: 560px) { .f-seq { grid-template-columns: repeat(2, 1fr); } .f-seq .arrow { display: none; } }

/* ---------- TABLES ---------- */
.f-tablecard { margin: 30px 0; border-radius: 12px; overflow: hidden; border: 1px solid var(--color-gray-line); box-shadow: 0 1px 3px rgba(13,75,92,.05); }
.f-table { width: 100%; border-collapse: collapse; background: #fff; font-size: 15px; }
.f-table thead th { background: var(--color-teal); color: #fff; text-align: left; padding: 13px 16px; font-weight: 600; font-size: 14px; }
.f-table tbody td { padding: 13px 16px; border-top: 1px solid var(--color-gray-line); vertical-align: top; }
.f-table tbody tr:nth-child(odd) td { background: var(--color-warm-white); }
.f-table tbody td:first-child { font-weight: 600; color: var(--color-teal); }
.f-table .lvl { text-align: center; font-family: var(--font-serif); font-size: 20px; color: var(--color-amber); white-space: nowrap; }

/* ---------- MODALITY CARDS ---------- */
.f-mods { display: grid; grid-template-columns: 1fr; gap: 18px; margin-top: 30px; }
.f-mod { background: #fff; border: 1px solid var(--color-gray-line); border-radius: 14px; padding: 26px 28px; border-top: 4px solid var(--color-teal); transition: transform .3s, box-shadow .3s; }
.f-mod:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(13,75,92,.12); }
.f-mod h3 { font-family: var(--font-serif); font-weight: 400; margin: 0 0 8px; font-size: 24px; color: var(--color-teal); }
.f-mod p { margin: 0; font-size: 16px; color: var(--color-text-soft); line-height: 1.6; }

/* ---------- CONTACT BOX ---------- */
.f-contact { margin-top: 30px; background: var(--color-gray-blue); border-radius: 14px; padding: 24px 28px; }
.f-contact .lbl { color: var(--color-amber); font-weight: 700; font-size: 13px; letter-spacing: .05em; text-transform: uppercase; }
.f-contact p { margin: 8px 0 0; font-size: 17px; color: var(--color-text); }
.f-contact a { color: var(--color-teal); font-weight: 700; text-decoration: none; border-bottom: 2px solid var(--color-amber); }

/* ---------- AUTHOR PERSPECTIVE ---------- */
.f-perspective { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 26px 0; }
.f-persp { background: rgba(255,255,255,.07); border-radius: 12px; padding: 22px; border-top: 3px solid var(--color-amber); }
.f-persp .role { font-family: var(--font-serif); font-size: 19px; color: #fff; margin-bottom: 8px; }
.f-persp p { font-size: 15px; color: rgba(255,255,255,.82); margin: 0; }
@media (max-width: 680px) { .f-perspective { grid-template-columns: 1fr; } }

/* ---------- SOURCES ---------- */
.f-sources { list-style: none; padding: 0; margin: 8px 0 0; }
.f-sources li { padding: 14px 0 14px 26px; border-bottom: 1px solid var(--color-gray-line); position: relative; font-size: 15px; color: #33373b; }
.f-sources li::before { content: "—"; position: absolute; left: 0; color: var(--color-amber); font-weight: 700; }
.f-sources li b { color: var(--color-teal); }

/* ---------- STAGE CARDS (adopcion-ia) ---------- */
.f-stage-stack { display: flex; flex-direction: column; gap: 12px; margin: 30px 0; }
.f-layer { border: 1px solid var(--color-gray-line); border-radius: 14px; padding: 18px 20px; background: #fff; }
.f-layer-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: var(--color-teal-soft); margin-bottom: 12px; }
.f-stages-row, .f-transv-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
@media (max-width: 640px) { .f-stages-row, .f-transv-row { grid-template-columns: 1fr; } }
.f-stage-box { border-radius: 10px; padding: 14px 16px; border: 1px solid rgba(13,75,92,.10); background: var(--color-warm-white); }
.f-stage-box .sn { font-family: var(--font-serif); font-size: 13px; color: var(--color-amber); }
.f-stage-box .sname { font-size: 15px; font-weight: 600; color: var(--color-teal); margin: 4px 0 2px; }
.f-stage-box .ssub { font-size: 12.5px; color: var(--color-text-soft); }
.f-transv-col { border-radius: 10px; padding: 12px 14px; text-align: center; font-size: 13.5px; font-weight: 600; color: var(--color-teal); background: var(--color-gray-blue); border: 1px solid rgba(13,75,92,.08); }
.f-transv-col small { display: block; font-weight: 400; font-size: 11px; margin-top: 3px; color: var(--color-text-soft); }
.f-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.f-pill { font-size: 12.5px; font-weight: 500; padding: 6px 12px; border-radius: var(--radius-pill); background: var(--color-warm-white); border: 1px solid var(--color-gray-line); color: var(--color-text); }
.f-pill .st { color: var(--color-amber); margin-left: 5px; letter-spacing: -1px; }

/* maturity 4-up */
.f-mat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 28px 0; }
@media (max-width: 760px) { .f-mat-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 440px) { .f-mat-grid { grid-template-columns: 1fr; } }
.f-mat { background: #fff; border: 1px solid var(--color-gray-line); border-radius: 12px; padding: 16px 16px 14px; border-top: 3px solid var(--color-teal); }
.f-mat .mn { font-family: var(--font-serif); font-size: 26px; color: var(--color-teal); }
.f-mat .mname { font-size: 14px; font-weight: 600; margin: 4px 0 6px; }
.f-mat .mdesc { font-size: 12.5px; color: var(--color-text-soft); line-height: 1.5; }
.f-mat .mnext { font-size: 11px; font-weight: 600; margin-top: 10px; color: var(--color-amber); }

/* component list */
.f-comp { background: #fff; border: 1px solid var(--color-gray-line); border-radius: 14px; padding: 8px 22px; margin-top: 14px; }
.f-comp-item { display: flex; gap: 14px; align-items: flex-start; padding: 16px 0; border-bottom: 1px solid var(--color-gray-line); }
.f-comp-item:last-child { border-bottom: none; }
.f-comp-num { width: 30px; height: 30px; border-radius: 8px; background: var(--color-gray-blue); color: var(--color-teal); font-family: var(--font-serif); font-size: 15px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.f-comp-name { font-size: 15px; font-weight: 600; color: var(--color-text); }
.f-comp-desc { font-size: 14px; color: var(--color-text-soft); margin-top: 4px; line-height: 1.55; }

/* two-col objective/exit */
.f-two { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 24px 0; }
@media (max-width: 640px) { .f-two { grid-template-columns: 1fr; } }
.f-two .box { background: var(--color-warm-white); border: 1px solid var(--color-gray-line); border-radius: 12px; padding: 20px 22px; }
.f-two .box .lbl { font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--color-amber); margin-bottom: 8px; }
.f-two .box p { font-size: 15px; color: var(--color-text); line-height: 1.6; margin: 0; }

/* back to home link */
.f-back { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: rgba(255,255,255,.8); text-decoration: none; margin-bottom: 26px; }
.f-back:hover { color: #fff; }
.f-back .arrow { transform: rotate(180deg); }

/* cross-link card at end */
.f-crosslink { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; background: var(--color-gray-blue); border-radius: 16px; padding: 28px 32px; margin-top: 32px; }
.f-crosslink .cl-txt h3 { font-family: var(--font-serif); font-weight: 400; color: var(--color-teal); font-size: 24px; margin-bottom: 6px; }
.f-crosslink .cl-txt p { font-size: 14.5px; color: var(--color-text-soft); margin: 0; max-width: 520px; }