/* opcionrural.com — accessibility-first stylesheet for senior smartphone guides */

:root{
  --navy-900:#0a2540;
  --navy-700:#16456f;
  --navy-500:#2e7cb8;
  --navy-100:#e6f0f9;
  --amber-600:#c2680a;
  --amber-500:#f59e0b;
  --amber-100:#fef3c7;
  --gray-50:#f9fafb;
  --gray-100:#f3f4f6;
  --gray-200:#e5e7eb;
  --gray-300:#d1d5db;
  --gray-500:#6b7280;
  --gray-700:#374151;
  --gray-900:#111827;
  --white:#ffffff;
  --maxw:1080px;
  --pad:24px;
  --radius:10px;
  --shadow-sm:0 1px 2px rgba(10,37,64,.06);
  --shadow:0 4px 16px rgba(10,37,64,.08);
  --shadow-lg:0 12px 32px rgba(10,37,64,.12);
  --serif:Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;font-size:17px}
body{margin:0;font-family:var(--sans);color:var(--gray-900);background:var(--white);line-height:1.65;font-size:1.0625rem}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy-700);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
a:hover,a:focus{color:var(--navy-900);text-decoration-thickness:2px}
a:focus-visible{outline:3px solid var(--amber-500);outline-offset:2px;border-radius:3px}

h1,h2,h3,h4{font-family:var(--serif);color:var(--navy-900);line-height:1.25;margin:1.6em 0 .5em}
h1{font-size:2rem;margin-top:0}
h2{font-size:1.55rem;border-bottom:1px solid var(--gray-200);padding-bottom:.35em}
h3{font-size:1.25rem}
h4{font-size:1.1rem}
p,ul,ol{margin:0 0 1.05em}
ul,ol{padding-left:1.4em}
li{margin-bottom:.35em}
strong{color:var(--navy-900)}
blockquote{margin:1.4em 0;padding:1em 1.2em;border-left:4px solid var(--navy-500);background:var(--navy-100);border-radius:0 var(--radius) var(--radius) 0;color:var(--gray-900);font-style:italic}

.container{width:min(var(--maxw),92%);margin:0 auto}
.skip-link{position:absolute;top:-40px;left:0;background:var(--navy-900);color:#fff;padding:10px 16px;z-index:1000;text-decoration:none}
.skip-link:focus{top:0}

/* HEADER */
.site-header{background:var(--white);border-bottom:2px solid var(--navy-100);position:sticky;top:0;z-index:50;box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit}
.brand:hover{text-decoration:none}
.brand-mark{width:42px;height:42px;border-radius:9px;background:linear-gradient(135deg,var(--navy-700),var(--navy-900));color:#fff;display:grid;place-items:center;font-family:var(--serif);font-weight:700;font-size:1.15rem;letter-spacing:.5px;box-shadow:var(--shadow-sm)}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-name{font-family:var(--serif);font-weight:700;font-size:1.25rem;color:var(--navy-900)}
.brand-tag{font-size:.78rem;color:var(--gray-500);font-style:italic;margin-top:2px}

.nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav a{color:var(--gray-700);text-decoration:none;font-weight:600;padding:9px 13px;border-radius:7px;font-size:.97rem}
.nav a:hover,.nav a.active{color:var(--navy-900);background:var(--navy-100);text-decoration:none}
.nav-toggle{display:none;background:none;border:2px solid var(--gray-300);color:var(--navy-900);padding:8px 12px;border-radius:7px;font-size:1rem;font-weight:600;cursor:pointer}

/* HERO */
.hero{background:linear-gradient(180deg,var(--navy-100) 0%,var(--white) 100%);padding:56px 0 36px;border-bottom:1px solid var(--gray-200)}
.hero-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center}
.hero h1{font-size:2.4rem;line-height:1.15;margin-bottom:.4em}
.hero .lede{font-size:1.18rem;color:var(--gray-700);margin-bottom:1.6em;max-width:560px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 22px;border-radius:8px;font-weight:700;text-decoration:none;font-size:1rem;border:2px solid transparent;cursor:pointer;font-family:var(--sans);transition:transform .1s,box-shadow .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--navy-700);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--navy-900);color:#fff;box-shadow:var(--shadow-lg)}
.btn-secondary{background:var(--white);color:var(--navy-900);border-color:var(--navy-700)}
.btn-secondary:hover{background:var(--navy-100);color:var(--navy-900)}
.btn-amber{background:var(--amber-500);color:#1a1300;border-color:var(--amber-500)}
.btn-amber:hover{background:var(--amber-600);color:#fff}

.hero-illus{display:grid;place-items:center}
.phone-mock{width:230px;height:430px;background:linear-gradient(160deg,#1a2236,#0a2540);border-radius:32px;padding:14px;box-shadow:0 18px 50px rgba(10,37,64,.3);position:relative}
.phone-mock::before{content:"";position:absolute;top:18px;left:50%;transform:translateX(-50%);width:80px;height:18px;background:#000;border-radius:11px}
.phone-screen{width:100%;height:100%;background:var(--white);border-radius:20px;padding:34px 14px 14px;display:flex;flex-direction:column;gap:8px}
.phone-row{display:flex;gap:8px}
.phone-app{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;font-size:18px;font-weight:700;font-family:var(--serif);color:#fff}
.phone-app.a{background:var(--navy-700)}
.phone-app.b{background:var(--amber-500);color:#1a1300}
.phone-app.c{background:#16a34a}
.phone-app.d{background:#dc2626}
.phone-app.e{background:#7c3aed}
.phone-app.f{background:#0891b2}

/* SECTIONS */
.section{padding:54px 0}
.section-alt{background:var(--gray-50)}
.section-head{text-align:center;margin-bottom:36px}
.section-head h2{display:inline-block;border:none;padding:0;font-size:2rem}
.section-head .kicker{display:inline-block;font-size:.78rem;text-transform:uppercase;letter-spacing:1.5px;color:var(--navy-700);font-weight:700;margin-bottom:.6em;background:var(--navy-100);padding:5px 12px;border-radius:99px}
.section-head p{max-width:680px;margin:.6em auto 0;color:var(--gray-700);font-size:1.07rem}

/* CARDS */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.card{background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:box-shadow .15s,transform .15s;display:flex;flex-direction:column}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.card h3{margin:0 0 .5em;font-size:1.18rem;line-height:1.3}
.card h3 a{color:var(--navy-900);text-decoration:none}
.card h3 a:hover{color:var(--navy-700);text-decoration:underline}
.card p{color:var(--gray-700);font-size:.97rem;margin-bottom:1em;flex:1}
.card-meta{display:flex;align-items:center;gap:10px;font-size:.85rem;color:var(--gray-500);margin-bottom:.8em;flex-wrap:wrap}
.tag{display:inline-block;background:var(--navy-100);color:var(--navy-900);padding:3px 9px;border-radius:99px;font-size:.78rem;font-weight:600;letter-spacing:.2px}
.tag-amber{background:var(--amber-100);color:var(--amber-600)}
.card-link{color:var(--navy-700);font-weight:600;text-decoration:none;font-size:.95rem}
.card-link::after{content:" →";transition:transform .15s}
.card-link:hover{color:var(--navy-900)}

/* CLUSTER CHIPS */
.cluster-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:32px}
.cluster-row a{display:inline-block;padding:9px 16px;background:var(--white);border:1.5px solid var(--gray-200);border-radius:99px;color:var(--gray-700);text-decoration:none;font-weight:600;font-size:.93rem}
.cluster-row a:hover,.cluster-row a.active{background:var(--navy-100);border-color:var(--navy-500);color:var(--navy-900);text-decoration:none}

/* CALLOUTS */
.callout{background:var(--amber-100);border-left:4px solid var(--amber-500);padding:18px 22px;border-radius:0 var(--radius) var(--radius) 0;margin:1.6em 0}
.callout-info{background:var(--navy-100);border-left-color:var(--navy-500)}
.callout strong{color:var(--gray-900)}

/* AD SLOTS — placeholders, not yet active */
.ad-slot{margin:36px auto;text-align:center;color:var(--gray-500);font-size:.78rem;letter-spacing:.5px;text-transform:uppercase;padding:18px;background:var(--gray-50);border:1px dashed var(--gray-300);border-radius:var(--radius);max-width:728px}
.ad-slot::before{content:"Advertisement";display:block;margin-bottom:6px}
.ad-slot-inline{margin:32px auto;max-width:600px}
.ad-slot-side{max-width:300px;min-height:250px;display:grid;place-items:center}

/* ARTICLE LAYOUT */
.article-wrap{display:grid;grid-template-columns:1fr 280px;gap:48px;padding:48px 0}
.article-body{max-width:760px}
.article-head{margin-bottom:32px}
.article-kicker{font-size:.78rem;text-transform:uppercase;letter-spacing:1.5px;color:var(--navy-700);font-weight:700;margin-bottom:10px}
.article-body h1{font-size:2.3rem;line-height:1.2;margin-bottom:.4em}
.article-meta{display:flex;align-items:center;gap:14px;color:var(--gray-500);font-size:.92rem;margin-top:1em;flex-wrap:wrap;padding-bottom:1em;border-bottom:1px solid var(--gray-200)}
.author-chip{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit}
.author-chip:hover{color:var(--navy-700)}
.author-avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--navy-500),var(--navy-900));color:#fff;display:grid;place-items:center;font-family:var(--serif);font-weight:700;font-size:.95rem;flex-shrink:0}
.author-avatar.amber{background:linear-gradient(135deg,var(--amber-500),var(--amber-600));color:#1a1300}
.author-avatar.green{background:linear-gradient(135deg,#16a34a,#065f46)}
.article-body p{font-size:1.075rem}
.article-body img{border-radius:var(--radius);margin:1.6em 0}
.article-body blockquote{font-size:1.07rem}

/* Featured / hero article image */
.featured-image{display:block;width:100%;height:auto;border-radius:var(--radius);margin:8px 0 28px;background:var(--gray-50);border:1px solid var(--gray-200);box-shadow:var(--shadow-sm)}

.toc{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius);padding:18px 22px;margin:24px 0}
.toc h2,.toc h3{border:none;padding:0;margin:0 0 .5em;font-size:1.05rem;color:var(--navy-900);font-family:var(--sans)}
.toc ol{margin:0;padding-left:1.3em}
.toc a{color:var(--navy-700);text-decoration:none}
.toc a:hover{text-decoration:underline}

.related{margin-top:48px;padding-top:32px;border-top:2px solid var(--gray-200)}
.related h2{font-size:1.4rem}

/* SIDEBAR */
.sidebar{position:sticky;top:90px;align-self:start;display:flex;flex-direction:column;gap:24px}
.sidebar-block{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius);padding:20px}
.sidebar-block h3{font-size:1rem;margin:0 0 .8em;color:var(--navy-900);font-family:var(--sans);text-transform:uppercase;letter-spacing:.5px}
.sidebar-block ul{list-style:none;padding:0;margin:0}
.sidebar-block li{margin-bottom:.6em;padding-bottom:.6em;border-bottom:1px solid var(--gray-200)}
.sidebar-block li:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}
.sidebar-block a{color:var(--navy-900);text-decoration:none;font-weight:600;font-size:.93rem;line-height:1.35;display:block}
.sidebar-block a:hover{color:var(--navy-700);text-decoration:underline}

/* FAQ DETAILS */
details.faq{background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius);padding:16px 20px;margin-bottom:12px}
details.faq[open]{box-shadow:var(--shadow-sm)}
details.faq summary{cursor:pointer;font-weight:700;font-size:1.05rem;color:var(--navy-900);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:10px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:1.5rem;color:var(--navy-700);line-height:1;font-weight:400}
details.faq[open] summary::after{content:"–"}
details.faq p{margin-top:.9em;color:var(--gray-700)}

/* BREADCRUMBS */
.crumbs{padding:18px 0;font-size:.88rem;color:var(--gray-500)}
.crumbs a{color:var(--gray-700);text-decoration:none}
.crumbs a:hover{color:var(--navy-700);text-decoration:underline}
.crumbs span{margin:0 8px;color:var(--gray-300)}

/* FORMS */
.form{display:grid;gap:18px;max-width:640px}
.form-row{display:grid;gap:6px}
.form label{font-weight:600;color:var(--navy-900);font-size:.97rem}
.form input,.form select,.form textarea{width:100%;padding:12px 14px;border:1.5px solid var(--gray-300);border-radius:8px;font-family:var(--sans);font-size:1.05rem;background:var(--white);color:var(--gray-900)}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--navy-500);box-shadow:0 0 0 3px rgba(46,124,184,.18)}
.form textarea{min-height:160px;resize:vertical}
.form .hint{font-size:.85rem;color:var(--gray-500);margin-top:4px}
.form .form-status{display:none;padding:14px 18px;border-radius:8px;background:var(--navy-100);color:var(--navy-900);font-weight:600}
.form .form-status.show{display:block}

/* AUTHOR PROFILE */
.author-profile{display:grid;grid-template-columns:140px 1fr;gap:32px;background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius);padding:32px;margin-bottom:32px}
.author-profile .avatar-big{width:140px;height:140px;border-radius:50%;background:linear-gradient(135deg,var(--navy-500),var(--navy-900));color:#fff;display:grid;place-items:center;font-family:var(--serif);font-weight:700;font-size:3rem}
.author-profile .avatar-big.amber{background:linear-gradient(135deg,var(--amber-500),var(--amber-600));color:#1a1300}
.author-profile .avatar-big.green{background:linear-gradient(135deg,#16a34a,#065f46)}
.author-profile h2{margin-top:0;border:none;padding:0}
.author-profile .credentials{display:flex;flex-wrap:wrap;gap:8px;margin:.8em 0 1em}
.author-profile .credentials span{background:var(--white);border:1px solid var(--gray-300);padding:5px 11px;border-radius:99px;font-size:.83rem;font-weight:600;color:var(--gray-700)}

/* FOOTER */
.site-footer{background:var(--navy-900);color:#dde6f0;padding:54px 0 24px;margin-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand p{color:#b8c7d8;font-size:.95rem;max-width:320px}
.footer-brand .brand{color:#fff}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-tag{color:#8ea3bd}
.site-footer h4{color:#fff;font-family:var(--sans);font-size:.86rem;text-transform:uppercase;letter-spacing:1.2px;margin:0 0 1.1em;border:none;padding:0}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:.55em}
.site-footer a{color:#b8c7d8;text-decoration:none;font-size:.95rem}
.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-bottom{border-top:1px solid #1d3a5a;padding-top:22px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;color:#8ea3bd;font-size:.85rem}

/* COOKIE BANNER */
.cookie-banner{position:fixed;bottom:18px;left:18px;right:18px;max-width:760px;margin:0 auto;background:var(--white);border:1.5px solid var(--navy-700);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:18px 20px;display:none;align-items:center;justify-content:space-between;gap:18px;z-index:100;flex-wrap:wrap}
.cookie-banner.show{display:flex}
.cookie-banner p{margin:0;font-size:.93rem;color:var(--gray-700);flex:1;min-width:240px}
.cookie-banner .btn{padding:9px 16px;font-size:.92rem}

/* RESPONSIVE */
@media (max-width:880px){
  .hero{padding:40px 0 24px}
  .hero h1{font-size:1.8rem}
  .hero .lede{font-size:1.05rem}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-illus{order:2}
  .phone-mock{width:180px;height:340px}
  .section{padding:42px 0}
  .article-wrap{grid-template-columns:1fr;gap:32px;padding:32px 0}
  .article-body h1{font-size:1.7rem}
  .sidebar{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .author-profile{grid-template-columns:1fr;text-align:center}
  .author-profile .avatar-big{margin:0 auto}
  .nav-toggle{display:inline-block}
  .nav{display:none;width:100%;flex-direction:column;align-items:stretch;background:var(--white);border-top:1px solid var(--gray-200);margin-top:10px;padding:8px 0}
  .nav.open{display:flex}
  .nav a{width:100%;padding:12px 14px}
  .brand-tag{display:none}
}
@media (max-width:540px){
  html{font-size:16.5px}
  .hero h1{font-size:1.55rem}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .ad-slot{margin:24px auto}
}

/* PRINT */
@media print{
  .site-header,.site-footer,.sidebar,.ad-slot,.cookie-banner,.cluster-row,.related{display:none!important}
  .article-wrap{grid-template-columns:1fr}
  body{color:#000}
}