/* Shared styles for case-study detail pages — Libreta Studio (marca verde, jul 2026) */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

@font-face{font-family:'Satoshi';src:url('assets/fonts/satoshi/Satoshi-Light.woff2') format('woff2');font-weight:300;font-display:swap}
@font-face{font-family:'Satoshi';src:url('assets/fonts/satoshi/Satoshi-Regular.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Satoshi';src:url('assets/fonts/satoshi/Satoshi-Medium.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Satoshi';src:url('assets/fonts/satoshi/Satoshi-Bold.woff2') format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:'Satoshi';src:url('assets/fonts/satoshi/Satoshi-Black.woff2') format('woff2');font-weight:900;font-display:swap}
@font-face{font-family:'Outfit';src:url('assets/fonts/outfit/Outfit-Light.ttf') format('truetype');font-weight:300;font-display:swap}
@font-face{font-family:'Outfit';src:url('assets/fonts/outfit/Outfit-Regular.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:'Outfit';src:url('assets/fonts/outfit/Outfit-Medium.ttf') format('truetype');font-weight:500;font-display:swap}
@font-face{font-family:'Outfit';src:url('assets/fonts/outfit/Outfit-SemiBold.ttf') format('truetype');font-weight:600;font-display:swap}
@font-face{font-family:'Outfit';src:url('assets/fonts/outfit/Outfit-Bold.ttf') format('truetype');font-weight:700;font-display:swap}

:root{
 /* core — paleta cerrada Libreta */
 --green:#48987B;--ink:#241B35;--cream:#F5F2EC;--sage:#C9D8C8;--clay:#D97757;--lavanda:#DCD7EA;--white:#fff;
 --g50:#EAF4EF;--g100:#CFE7DD;--g300:#82C0AB;--g700:#2E6853;--g900:#17362B;
 --ink2:#4A4560;--muted:#6A6478;--rule:rgba(36,27,53,.12);
 --clay-pale:#FBEEE8;--clay-700:#A8452A;--sage-pale:#EDF3EC;
 /* aliases */
 --forest:var(--green);--forest-pale:var(--g50);--forest-mid:var(--g300);
 --accent:var(--clay);--accent-pale:var(--clay-pale);--accent-700:var(--clay-700);
 --ruled:repeating-linear-gradient(to bottom,transparent 0,transparent 31px,rgba(36,27,53,.045) 31px,rgba(36,27,53,.045) 32px);
 --disp:'Satoshi',sans-serif;--body:'Outfit',sans-serif;
}
/* instructor credit */
.instructor{display:flex;align-items:center;gap:14px;margin-top:44px;padding:16px 18px;background:var(--white);border:1px solid var(--rule);border-radius:14px;max-width:430px}
.instructor-ava{width:44px;height:44px;border-radius:50%;flex-shrink:0;background:var(--green);color:var(--cream);display:flex;align-items:center;justify-content:center;font-family:var(--disp);font-weight:700;font-size:15px;overflow:hidden}
.instructor-ava img{width:100%;height:100%;object-fit:cover}
.instructor-label{font-family:var(--body);font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:2px}
.instructor-name{font-family:var(--disp);font-size:15px;font-weight:500;color:var(--ink);text-decoration:none}
.instructor-name:hover{color:var(--green)}
.instructor-role{font-family:var(--body);font-size:12px;color:var(--ink2);margin-top:1px}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--cream);background-image:var(--ruled);color:var(--ink);line-height:1.6}
.es{display:none}
body.lang-es .en{display:none}
body.lang-es .es{display:inline}

/* A11Y — foco visible + skip link */
a:focus-visible,button:focus-visible{outline:2px solid var(--g700);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:12px;top:-48px;z-index:200;background:var(--g700);color:#fff;font-family:var(--body);font-size:12px;letter-spacing:.06em;padding:10px 16px;border-radius:8px;text-decoration:none;transition:top .18s}
.skip:focus{top:12px}

/* NAV */
.nav{position:sticky;top:0;z-index:100;padding:0 48px;height:60px;display:flex;align-items:center;justify-content:space-between;background:rgba(245,242,236,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--rule)}
.back{font-family:var(--body);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);text-decoration:none}
.back:hover{color:var(--ink)}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none}
.brand-logo{height:22px;display:block}
.brand-studio{font-family:var(--body);font-size:15px;color:var(--muted);font-weight:600;margin-left:1px}
.lang-toggle{font-family:var(--body);font-size:11px;letter-spacing:.1em;border:1px solid var(--rule);background:var(--white);border-radius:20px;padding:5px 12px;cursor:pointer;color:var(--ink)}

/* WRAP */
.wrap{max-width:760px;margin:0 auto;padding:64px 48px 100px}

/* HERO */
.c-kind{font-family:var(--body);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--clay-700);margin-bottom:18px}
.c-title{font-family:var(--disp);font-size:clamp(34px,5vw,52px);font-weight:300;line-height:1.08;margin-bottom:18px}
.c-title em{font-style:italic;color:var(--green)}
.c-lead{font-size:17px;font-weight:300;color:var(--ink2);line-height:1.7;max-width:620px}

/* META */
.meta{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--rule);border:1px solid var(--rule);border-radius:8px;overflow:hidden;margin:40px 0}
.meta div{background:var(--white);padding:14px 16px}
.meta dt{font-family:var(--body);font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.meta dd{font-size:12px;font-weight:400}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin:24px 0}
.tag{font-family:var(--body);font-size:9px;letter-spacing:.06em;color:var(--g700);background:var(--g50);border-radius:20px;padding:3px 10px}
.tag.b{color:var(--clay-700);background:var(--clay-pale)}

/* SECTIONS */
.sec{margin-top:44px}
.sec h2{font-family:var(--disp);font-size:28px;font-weight:400;margin-bottom:12px}
.sec h2 em{font-style:italic;color:var(--green)}
.sec p{font-size:15px;font-weight:300;color:var(--ink2);line-height:1.8;margin-bottom:12px}
.sec ul{list-style:none;display:flex;flex-direction:column;gap:8px;margin:10px 0}
.sec li{font-size:14px;font-weight:300;color:var(--ink2);padding-left:18px;position:relative;line-height:1.6}
.sec li::before{content:'→';position:absolute;left:0;color:var(--forest-mid);font-size:12px;top:3px}
.sec li b{font-weight:500;color:var(--ink)}

/* CALLOUT / QUOTE */
.quote{background:var(--clay-pale);border-left:3px solid var(--clay);border-radius:8px;padding:30px 34px;margin:40px 0}
.quote blockquote{font-family:var(--disp);font-size:23px;font-style:italic;line-height:1.4;color:var(--ink);margin-bottom:12px}
.quote cite{font-family:var(--body);font-size:10px;font-style:normal;color:var(--muted);letter-spacing:.04em}

.note{font-size:12px;font-weight:300;color:var(--muted);font-style:italic;border-top:1px solid var(--rule);padding-top:18px;margin-top:48px}

.foot{text-align:center;font-family:var(--body);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:24px;border-top:1px solid var(--rule)}

@media(max-width:820px){
 .nav,.wrap{padding-left:22px;padding-right:22px}
 .meta{grid-template-columns:1fr 1fr}
}