/* =====================================================
   TOKENS — Design system
   ===================================================== */
:root {
  --navy:#0B2545; --navy-2:#143C6B; --navy-ink:#0A1F3D;
  --teal:#13A8A8; --teal-2:#0E8A8A;
  --bg:#FAFAF7; --surface:#FFFFFF;
  --line:#E6E8EC; --line-2:#EFF1F4;
  --ink:#1A1F2B; --ink-2:#5A6478; --ink-3:#6B7585;
  --ok:#15823F; --warn:#B45309; --bad:#B42318; --chip:#F1F4F8;
  --radius:6px; --radius-lg:10px;
  --shadow-sm:0 1px 2px rgba(11,37,69,.04);
  --shadow:0 4px 14px rgba(11,37,69,.06);
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:'Source Sans 3',system-ui,-apple-system,sans-serif;
  /* Layout tokens — overridden per breakpoint */
  --header-h:52px;
  --gap:10px;
  --pad:12px;
}

/* =====================================================
   RESET & BASE — Mobile-first
   ===================================================== */
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:var(--sans);
  font-size:1rem;          /* 16px — prevents iOS auto-zoom */
  line-height:1.55;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent;
  overscroll-behavior-y:none;
}
img,svg{max-width:100%;display:block}
a{color:var(--navy-2);text-decoration:none}
a:hover{text-decoration:underline}
button{font-family:inherit;cursor:pointer;touch-action:manipulation}
input,select,textarea{
  font-family:inherit;
  font-size:1rem;  /* 16px — prevents iOS zoom-on-focus */
}

/* =====================================================
   UTILITIES
   ===================================================== */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-nav{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;z-index:300}
.skip-nav:focus{position:fixed;left:12px;top:12px;width:auto;height:auto;padding:10px 18px;background:var(--navy);color:#fff;border-radius:var(--radius);font-size:14px;font-weight:600;text-decoration:none;outline:2px solid var(--teal);outline-offset:2px}
.tool.hide,.cat-section.hide{display:none}

/* =====================================================
   HEADER — Modern design
   ===================================================== */
.app-header{
  position:sticky;top:0;z-index:50;color:#fff;
  background:linear-gradient(180deg,#0C2749 0%,#0A1F3D 100%);
  box-shadow:0 4px 28px rgba(10,31,61,.45);
}

.header-inner{
  display:flex;align-items:center;gap:8px;
  padding:0 12px;height:var(--header-h);
  max-width:1440px;margin:0 auto;
}

/* Brand */
.brand{
  display:flex;align-items:center;gap:11px;flex-shrink:0;min-width:0;
  text-decoration:none;
}
.brand-mark{
  width:42px;height:42px;flex-shrink:0;border-radius:11px;
  overflow:hidden;background:linear-gradient(135deg,#15b9b0 0%,#079b91 100%);
  display:grid;place-items:center;
  box-shadow:0 3px 14px rgba(19,168,168,.25),inset 0 1px 0 rgba(255,255,255,.2);
}
.brand-icon{
  width:100%;height:100%;display:block;
}
.brand-icon .calc-screen,.brand-icon .calc-key{
  fill:#fff;
}
.brand-name{display:flex;flex-direction:column;line-height:1.1;min-width:0}
.brand-name strong{
  font-weight:700;font-size:14px;letter-spacing:-.02em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  color:#fff;
}
.brand-tld{color:var(--teal);font-weight:800}
.brand-sub{
  font-size:10px;color:rgba(255,255,255,.42);
  letter-spacing:.05em;text-transform:uppercase;white-space:nowrap;
  margin-top:1px;display:block;
}

/* Search — hidden on mobile, shown 480px+ */
.search-wrap{
  position:relative;flex:1;min-width:0;display:none;
}
.search-wrap svg{
  position:absolute;left:11px;top:50%;transform:translateY(-50%);
  color:rgba(255,255,255,.4);pointer-events:none;flex-shrink:0;
}
#globalSearch{
  width:100%;height:40px;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);
  color:#fff;border-radius:20px;padding:0 36px 0 36px;
  outline:none;font-size:14px;
  transition:background .15s,border-color .15s,box-shadow .15s;
  -webkit-appearance:none;
}
#globalSearch::placeholder{color:rgba(255,255,255,.38)}
#globalSearch:focus{
  background:rgba(255,255,255,.13);
  border-color:rgba(19,168,168,.6);
  box-shadow:0 0 0 3px rgba(19,168,168,.12);
}
.kbd{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-family:var(--mono);font-size:10px;
  background:rgba(255,255,255,.09);color:rgba(255,255,255,.5);
  padding:2px 6px;border-radius:5px;border:1px solid rgba(255,255,255,.12);
}

/* Header actions */
.header-actions{display:flex;align-items:center;gap:6px;margin-left:auto;flex-shrink:0}
.search-toggle,.header-btn{
  height:36px;padding:0 10px;min-width:36px;
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.82);
  border:1px solid rgba(255,255,255,.14);border-radius:8px;
  font-size:12px;font-weight:500;font-family:inherit;
  display:inline-flex;align-items:center;justify-content:center;gap:5px;
  white-space:nowrap;cursor:pointer;
  transition:background .12s,border-color .12s,color .12s;
}
.search-toggle:hover,.header-btn:hover{
  background:rgba(255,255,255,.15);color:#fff;
  border-color:rgba(255,255,255,.28);
}
.btn-label{display:none}

/* Hamburger */
.menu-toggle{
  display:flex;align-items:center;justify-content:center;
  width:36px;height:36px;flex-shrink:0;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:8px;
  color:rgba(255,255,255,.85);padding:0;cursor:pointer;
  transition:background .12s,border-color .12s;
}
.menu-toggle:hover{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.28)}

/* Category nav strip */
.cat-nav{
  background:rgba(0,0,0,.22);
  border-top:1px solid rgba(255,255,255,.06);
  display:none;
}
.cat-nav-inner{
  max-width:1440px;margin:0 auto;
  padding:0 12px;display:flex;gap:0;
  overflow-x:auto;scrollbar-width:none;
}
.cat-nav-inner::-webkit-scrollbar{display:none}
.cat-nav-btn{
  color:rgba(255,255,255,.5);font-size:11px;font-weight:600;
  padding:7px 14px;letter-spacing:.05em;text-transform:uppercase;
  background:transparent;border:none;cursor:pointer;
  border-bottom:2px solid transparent;
  white-space:nowrap;min-height:34px;
  display:flex;align-items:center;gap:5px;font-family:inherit;
  transition:color .12s,border-color .12s;
}
.cat-nav-btn:hover,.cat-nav-btn.active{color:#fff;border-bottom-color:var(--teal)}
.cat-nav-count{
  font-size:9.5px;padding:1px 5px;border-radius:99px;
  background:rgba(255,255,255,.1);color:rgba(255,255,255,.55);
  font-weight:600;
}
.cat-nav-btn.active .cat-nav-count{background:rgba(19,168,168,.25);color:var(--teal)}

/* Teal accent line below nav */
.header-accent{
  height:2px;
  background:linear-gradient(90deg,var(--teal) 0%,rgba(19,168,168,.25) 55%,transparent 100%);
}

/* Mobile search bar — slides below header */
.mobile-search-bar{
  display:none;padding:8px 12px;
  background:rgba(10,31,61,.97);
  border-top:1px solid rgba(255,255,255,.08);
}
.mobile-search-bar.open{display:block}
#mobileSearchInput{
  width:100%;height:44px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  border-radius:8px;color:#fff;padding:0 14px;
  font-size:1rem;outline:none;-webkit-appearance:none;
}
#mobileSearchInput::placeholder{color:rgba(255,255,255,.45)}
#mobileSearchInput:focus{
  border-color:rgba(19,168,168,.5);
  box-shadow:0 0 0 3px rgba(19,168,168,.1);
}

/* Ad banner */
.ad-slot{
  background:repeating-linear-gradient(45deg,#F4F5F8,#F4F5F8 10px,#EEF0F4 10px,#EEF0F4 20px);
  border:1px dashed #C9CFD9;color:#7A8395;
  display:grid;place-items:center;
  font-family:var(--mono);font-size:10px;letter-spacing:.05em;text-transform:uppercase;
  border-radius:var(--radius);
}
.ad-leaderboard{width:100%;height:56px;margin:0}
.ad-inline{height:68px;margin:0 0 8px}
.ad-sidebar-right{width:100%;height:200px;margin-bottom:14px}

/* =====================================================
   LAYOUT — single column mobile
   ===================================================== */
.layout{
  max-width:1440px;margin:0 auto;
  display:grid;grid-template-columns:1fr;
  gap:var(--gap);
  padding:var(--pad);
  padding-bottom:max(var(--pad),env(safe-area-inset-bottom,0px));
  padding-left:max(var(--pad),env(safe-area-inset-left,0px));
  padding-right:max(var(--pad),env(safe-area-inset-right,0px));
}

/* =====================================================
   SIDEBAR — Mobile: slide-in drawer
   ===================================================== */
.sidebar{
  position:fixed;left:0;top:var(--app-header-real,var(--header-h));bottom:0;
  width:280px;max-width:85vw;z-index:40;
  transform:translateX(-100%);
  transition:transform .25s ease;
  background:var(--surface);border-right:1px solid var(--line);
  border-radius:0;padding:12px 10px;
  padding-bottom:max(12px,env(safe-area-inset-bottom,0px));
  overflow-y:auto;
  max-height:calc(100dvh - var(--app-header-real,var(--header-h)));
  -webkit-overflow-scrolling:touch;
  overscroll-behavior:contain;
}
.sidebar.open{transform:translateX(0);box-shadow:8px 0 32px rgba(0,0,0,.12)}
.scrim{
  display:none;position:fixed;inset:0;top:var(--app-header-real,var(--header-h));
  background:rgba(10,31,61,.45);z-index:39;
}
.scrim.show{display:block}

.sb-title{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);font-weight:600;padding:6px 10px 8px}
.sb-section{margin-bottom:4px}
.sb-cat{
  display:flex;align-items:center;gap:10px;
  padding:10px;border-radius:6px;
  font-size:13px;font-weight:600;color:var(--ink);
  cursor:pointer;user-select:none;min-height:44px;
}
.sb-cat:hover{background:var(--line-2)}
.sb-cat .count{margin-left:auto;font-weight:500;color:var(--ink-3);font-size:12px}
.sb-cat svg{color:var(--teal-2);flex-shrink:0}
.sb-sub{padding:2px 0 6px 36px;display:flex;flex-direction:column;gap:1px}
.sb-link,button.sb-link{
  display:block;width:100%;
  padding:6px 8px;font-size:13px;
  color:var(--ink-2);border-radius:4px;
  cursor:pointer;text-align:left;
  background:none;border:none;font:inherit;
  min-height:32px;line-height:1.15;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.sb-link:hover{background:var(--line-2);color:var(--navy)}
.sb-link.active{color:var(--navy);font-weight:600;background:rgba(19,168,168,.08)}

/* =====================================================
   MAIN — Hero
   ===================================================== */
.main{min-width:0}
.page-hero{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:14px;
  margin-bottom:var(--gap);
  display:flex;flex-direction:column;gap:12px;
}
.page-hero h1{
  margin:0 0 6px;
  font-size:clamp(16px,4.5vw,22px);
  letter-spacing:-.015em;font-weight:700;color:var(--navy-ink);line-height:1.25;
}
.page-hero > div:first-child > p{margin:0;color:var(--ink-2);font-size:14px;line-height:1.5}

/* Stats — pill bar on mobile */
.hero-stats{
  display:flex;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.hero-stat{
  flex:1;padding:10px 6px;text-align:center;
  border-right:1px solid var(--line);
}
.hero-stat:last-child{border-right:none}
.hero-stat strong{display:block;font-family:var(--mono);font-size:17px;color:var(--navy);font-weight:700}
.hero-stat span{font-size:9px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-3)}

/* Trust bar */
.trust-bar{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;font-size:11px;color:var(--ink-2)}
.trust-bar span{display:flex;align-items:center;gap:3px}

/* Section headers */
.cat-section{margin-bottom:18px;scroll-margin-top:calc(var(--app-header-real, var(--header-h)) + 16px)}
.cat-header{display:flex;align-items:baseline;justify-content:space-between;margin:6px 2px 10px}
.cat-header h2{
  font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--navy);margin:0;display:flex;align-items:center;gap:8px;
}
.cat-header h2::before{content:"";display:inline-block;width:3px;height:14px;background:var(--teal);border-radius:2px}
.cat-header .cat-meta{font-size:11px;color:var(--ink-3);font-family:var(--mono)}

/* =====================================================
   TOOLS GRID — 1 col mobile
   ===================================================== */
.tools-grid{display:grid;grid-template-columns:1fr;gap:8px}

.tool{scroll-margin-top:calc(var(--app-header-real, var(--header-h)) + 16px);
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;
  transition:border-color .15s,box-shadow .15s;
}
.tool:hover{border-color:#C9D2E0;box-shadow:var(--shadow-sm)}
.tool.open{border-color:var(--teal);box-shadow:0 0 0 3px rgba(19,168,168,.10)}

.tool-head{
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;cursor:pointer;user-select:none;
  min-height:56px; /* touch target */
}
.tool-icon{
  width:36px;height:36px;flex-shrink:0;border-radius:8px;
  background:rgba(19,168,168,.10);color:var(--teal-2);
  display:grid;place-items:center;
}
.tool-meta{flex:1;min-width:0}
.tool-meta strong{display:block;font-size:14px;font-weight:600;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tool-meta span{font-size:12px;color:var(--ink-2);display:block}
.tool-toggle{
  width:28px;height:28px;flex-shrink:0;border-radius:4px;
  display:grid;place-items:center;color:var(--ink-3);
  transition:transform .2s,background .15s;
}
.tool.open .tool-toggle{transform:rotate(180deg);color:var(--teal-2);background:rgba(19,168,168,.1)}
.tool-body{display:none;padding:0 14px 14px;border-top:1px solid var(--line-2)}
.tool.open .tool-body{display:block}

/* =====================================================
   FORM FIELDS — touch-optimised
   ===================================================== */
.field-grid{display:grid;grid-template-columns:1fr;gap:10px;margin-top:12px}
.field{display:flex;flex-direction:column;gap:5px}
.field label{font-size:12px;color:var(--ink-2);font-weight:500;display:flex;justify-content:space-between;align-items:baseline}
.field label .hint{color:var(--ink-3);font-weight:400;font-size:11px;font-family:var(--mono)}
.field input,.field select{
  height:44px; /* 44px touch target */
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:0 12px;color:var(--ink);outline:none;
  font-size:1rem; /* 16px — no zoom */
  transition:border-color .12s,box-shadow .12s;
  width:100%;-webkit-appearance:none;appearance:none;
}
.field select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235A6478' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 10px center;
  padding-right:30px;
}
.field input:focus,.field select:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(19,168,168,.15)}
.field input.mono{font-family:var(--mono);letter-spacing:.01em}

/* Valores iniciales de ejemplo: resaltan que el usuario debe sustituirlos */
.field.is-example input{
  border-color:#F0C36A;
  background:linear-gradient(90deg,#FFF9E8 0%,#FFFFFF 72%);
  box-shadow:0 0 0 3px rgba(240,195,106,.16);
}
.field.is-example input:focus{
  border-color:var(--teal);
  background:#fff;
  box-shadow:0 0 0 3px rgba(19,168,168,.15);
}
.example-badge{
  margin-left:8px;
  padding:2px 7px;
  border-radius:999px;
  background:#FFF1C6;
  color:#7A5200;
  font-size:10px;
  font-weight:700;
  letter-spacing:.02em;
  text-transform:uppercase;
  white-space:nowrap;
}
.example-note{
  display:none;
  margin-top:-1px;
  font-size:11px;
  line-height:1.35;
  color:#7A5200;
}
.field.is-example .example-note{display:block}

.field-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}

/* Segmented controls */
.seg{
  display:flex;flex-wrap:wrap;
  background:var(--chip);border-radius:6px;padding:3px;gap:2px;width:100%;
}
.seg button{
  flex:1;min-width:60px;
  border:none;background:transparent;color:var(--ink-2);
  padding:8px 8px;font-size:12px;border-radius:4px;font-weight:500;
  white-space:nowrap;min-height:36px;
}
.seg button.active{background:#fff;color:var(--navy);box-shadow:0 1px 2px rgba(0,0,0,.06)}

/* =====================================================
   RESULTS
   ===================================================== */
.result-pane{
  margin-top:12px;background:#F7F9FB;
  border:1px solid var(--line);border-radius:var(--radius);
  padding:12px 14px;display:flex;flex-direction:column;gap:8px;
}
.result-row{
  display:flex;justify-content:space-between;align-items:baseline;
  gap:8px;padding:3px 0;flex-wrap:wrap;
}
.result-row + .result-row{border-top:1px dashed var(--line)}
.result-row .lbl{font-size:13px;color:var(--ink-2);flex:1;min-width:80px}
.result-row .val{font-family:var(--mono);font-size:14px;color:var(--ink);font-weight:500;text-align:right}
.result-row.primary .lbl{color:var(--navy);font-weight:600}
.result-row.primary .val{color:var(--navy);font-size:17px;font-weight:700}
.result-row .pos{color:var(--ok)}
.result-row .neg{color:var(--bad)}

.tool-actions{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.btn{
  height:44px;padding:0 16px;border-radius:var(--radius);
  font-size:13px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;
  border:1px solid transparent;
  transition:background .12s,border-color .12s,color .12s;
  touch-action:manipulation;white-space:nowrap;
}
.btn-primary{background:var(--navy);color:#fff;border-color:var(--navy)}
.btn-primary:hover{background:var(--navy-ink);border-color:var(--navy-ink)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:#B6BFCD;background:var(--line-2)}
.btn-link{background:transparent;color:var(--navy-2);border:none;padding:0 6px;height:auto}
.btn-link:hover{text-decoration:underline}

.note{font-size:12px;color:var(--ink-3);margin-top:10px;line-height:1.5;border-left:2px solid var(--line);padding-left:10px}

/* tramos table — scrollable on mobile */
table.tramos{width:100%;border-collapse:collapse;font-size:11px;font-family:var(--mono);margin-top:8px}
table.tramos th,table.tramos td{padding:5px 6px;text-align:right;border-bottom:1px solid var(--line-2)}
table.tramos th{color:var(--ink-3);font-weight:500;font-size:10px}
table.tramos th:first-child,table.tramos td:first-child{text-align:left}

/* =====================================================
   RIGHT RAIL — hidden until 1180px
   ===================================================== */
.right-rail{display:none}
.rail-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:14px 16px}
.rail-card h3{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);margin:0 0 10px;font-weight:600}
.history-list{display:flex;flex-direction:column;gap:8px;max-height:340px;overflow-y:auto;margin:0;padding:0;list-style:none}
.hist-item{border:1px solid var(--line-2);border-radius:6px;padding:8px 10px;font-size:12px;display:flex;flex-direction:column;gap:2px;cursor:pointer;min-height:44px}
.hist-item:hover{border-color:#C9D2E0}
.hist-item .h-tool{font-weight:600;color:var(--navy);font-size:12px}
.hist-item .h-val{font-family:var(--mono);color:var(--ink)}
.hist-item .h-time{color:var(--ink-3);font-size:11px}
.empty-state{font-size:12px;color:var(--ink-3);font-style:italic}

/* =====================================================
   TOAST
   ===================================================== */
.toast{
  position:fixed;
  bottom:max(20px,calc(env(safe-area-inset-bottom,0px) + 12px));
  left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--navy-ink);color:#fff;padding:10px 18px;border-radius:8px;
  font-size:13px;opacity:0;pointer-events:none;
  transition:opacity .2s,transform .2s;z-index:100;
  display:flex;align-items:center;gap:8px;
  white-space:nowrap;max-width:calc(100vw - 32px);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* =====================================================
   FOOTER
   ===================================================== */
.app-footer{border-top:1px solid var(--line);background:#fff;margin-top:24px}
.footer-inner{
  max-width:1440px;margin:0 auto;
  padding:16px var(--pad);
  padding-bottom:max(16px,calc(env(safe-area-inset-bottom,0px) + 12px));
  display:flex;flex-direction:column;gap:14px;
}
.footer-disclaimer{font-size:12px;color:var(--ink-2);line-height:1.6}
.footer-disclaimer strong{color:var(--ink);font-weight:600}
.footer-meta{font-size:11px;color:var(--ink-3);display:flex;flex-direction:column;gap:6px}
.footer-links{display:flex;flex-wrap:wrap;gap:10px}
.footer-links a{color:var(--ink-2);font-size:12px;padding:4px 0}

/* =====================================================
   EDITORIAL & FAQ
   ===================================================== */
.editorial-grid{display:grid;grid-template-columns:1fr;gap:10px}
.editorial-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:14px}
.editorial-card h3{font-size:14px;font-weight:700;color:var(--navy-ink);margin:0 0 6px}
.editorial-card p{font-size:13px;color:var(--ink-2);line-height:1.6;margin:0}
.editorial-card strong{color:var(--ink)}

.faq-section{margin-top:8px}
.faq-section .cat-header h2{font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--navy);margin:0;display:flex;align-items:center;gap:8px}
.faq-section .cat-header h2::before{content:"";display:inline-block;width:3px;height:14px;background:var(--teal);border-radius:2px}
.faq-list{display:flex;flex-direction:column;gap:8px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.faq-item[open]{border-color:var(--teal)}
.faq-q{
  list-style:none;padding:14px 16px;cursor:pointer;
  font-size:14px;font-weight:600;color:var(--navy-ink);
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  user-select:none;min-height:48px;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{content:"▸";font-size:12px;color:var(--ink-3);flex-shrink:0;transition:transform .2s}
.faq-item[open] .faq-q::after{transform:rotate(90deg);color:var(--teal-2)}
.faq-a{padding:0 16px 14px;font-size:13px;color:var(--ink-2);line-height:1.65;border-top:1px solid var(--line-2)}
.faq-a a{color:var(--navy-2);text-decoration:underline}
.faq-a strong{color:var(--ink)}
.faq-a em{color:var(--ink-2)}

/* IBAN */
.iban-display{
  font-family:var(--mono);font-size:clamp(12px,3.4vw,16px);letter-spacing:.015em;
  background:#0E2742;color:#A6E3E3;padding:12px 14px;border-radius:6px;
  white-space:nowrap;overflow-x:auto;word-break:normal;line-height:1.35;margin-top:12px;
  -webkit-overflow-scrolling:touch;
}
.iban-display::-webkit-scrollbar{height:4px}
.iban-display::-webkit-scrollbar-thumb{background:rgba(255,255,255,.22);border-radius:99px}
.iban-bad{color:#FCA5A5}
.iban-ok{color:#86E1A9}

.badge{display:inline-block;padding:2px 8px;border-radius:99px;font-size:11px;font-weight:600;letter-spacing:.02em}
.badge-ok{background:rgba(21,130,63,.12);color:var(--ok)}
.badge-bad{background:rgba(180,35,24,.12);color:var(--bad)}
.badge-warn{background:rgba(180,83,9,.12);color:var(--warn)}

/* =====================================================
   BREAKPOINT 480px — Phones landscape / large phones
   ===================================================== */
@media(min-width:480px){
  :root{--header-h:58px;--pad:14px;--gap:12px}
  .sidebar{top:var(--app-header-real,calc(var(--header-h) + 36px));max-height:calc(100dvh - var(--app-header-real,calc(var(--header-h) + 36px)))}
  .scrim{top:var(--app-header-real,calc(var(--header-h) + 36px))}
  .search-wrap{display:flex}
  .search-toggle{display:none!important}
  .mobile-search-bar{display:none!important}
  .header-inner{padding:0 16px;gap:12px}
  .brand-name strong{font-size:16px}
  .btn-label{display:inline}
  .ad-leaderboard{height:90px}
  .cat-nav{display:block}
}

/* =====================================================
   BREAKPOINT 640px — Tablets portrait
   ===================================================== */
@media(min-width:640px){
  :root{--header-h:64px;--gap:14px;--pad:16px}
  .tools-grid{grid-template-columns:repeat(2,1fr)}
  .field-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
  .page-hero{flex-direction:column;align-items:stretch;padding:18px 22px;gap:12px}
  .page-hero > div:first-child{flex:0 1 auto}
  .hero-stats{flex-direction:row;gap:0;border:1px solid var(--line);max-width:520px}
  .hero-stat{padding:8px 10px;text-align:center;border-right:1px solid var(--line)}
  .hero-stat strong{font-size:20px}
  .hero-stat span{font-size:11px}
  .editorial-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{flex-direction:row;align-items:flex-start;justify-content:space-between;padding:22px}
  .footer-meta{text-align:right}
  .footer-links{justify-content:flex-end}
  .ad-sidebar-right{height:220px}
}

/* =====================================================
   BREAKPOINT 820px — Sidebar visible (sticky)
   ===================================================== */
@media(min-width:820px){
  :root{--gap:18px;--pad:18px}
  .layout{grid-template-columns:320px minmax(0,1fr)}
  /* Sidebar becomes sticky panel */
  .sidebar{
    position:sticky;
    top:calc(var(--header-h) + 16px);
    transform:none!important;
    box-shadow:none!important;
    border-right:none;
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    width:auto;height:fit-content;max-height:none;
    overflow:visible;padding:14px 10px;
  }
  .scrim{display:none!important}
  .menu-toggle{display:none!important}
  .tools-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
}


/* =====================================================
   BREAKPOINT 1180px — Full desktop + right rail
   ===================================================== */
@media(min-width:1180px){
  :root{--gap:22px;--pad:22px}
  .layout{grid-template-columns:320px minmax(0,1fr) 332px;padding:18px 24px 32px}
  .right-rail{
    display:flex;flex-direction:column;gap:18px;
    position:relative;top:auto;
  }
  .ad-leaderboard{height:90px}
  .ad-sidebar-right{height:250px}
  .editorial-grid{grid-template-columns:repeat(auto-fill,minmax(270px,1fr))}
}

/* =====================================================
   BREAKPOINT 1440px — Wide screens
   ===================================================== */
@media(min-width:1440px){
  .header-inner{padding:0 24px}
}

/* =====================================================
   ACCESSIBILITY — reduce motion
   ===================================================== */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
}

/* =====================================================
   MODAL OVERLAY
   ===================================================== */
.modal-overlay{
  display:none;position:fixed;inset:0;z-index:200;
  background:rgba(10,31,61,.65);
  overflow-y:auto;padding:16px 12px;
  -webkit-overflow-scrolling:touch;
}
.modal-overlay.open{display:flex;align-items:flex-start;justify-content:center}
.modal-dialog{
  background:var(--surface);border-radius:var(--radius-lg);
  width:100%;max-width:720px;
  margin:auto;
  padding:28px 24px;position:relative;
  box-shadow:0 12px 40px rgba(10,31,61,.3);
}
@media(max-width:479px){.modal-dialog{padding:20px 14px}}
.modal-close{
  position:absolute;top:14px;right:14px;
  width:36px;height:36px;border-radius:50%;
  background:var(--line-2);border:none;cursor:pointer;
  display:grid;place-items:center;color:var(--ink-2);
  font-size:22px;line-height:1;font-family:inherit;
  transition:background .12s;
}
.modal-close:hover{background:var(--line);color:var(--ink)}
.modal-page{display:none}
.modal-page.active{display:block}
.modal-page h2{font-size:clamp(18px,5vw,24px);font-weight:700;color:var(--navy-ink);margin:0 0 6px;padding-right:40px}
.modal-page h3{font-size:15px;font-weight:600;color:var(--navy);margin:20px 0 6px}
.modal-page p,.modal-page li{font-size:14px;line-height:1.7;color:var(--ink-2)}
.modal-page p{margin:0 0 12px}
.modal-page ul,.modal-page ol{padding-left:20px;margin:0 0 14px}
.modal-page li{margin-bottom:4px}
.modal-page a{color:var(--navy-2);text-decoration:underline}
.modal-meta{font-size:12px;color:var(--ink-3);margin-bottom:20px;display:block;border-bottom:1px solid var(--line);padding-bottom:14px}
.sobre-hero{display:flex;gap:18px;align-items:flex-start;margin-bottom:20px;flex-wrap:wrap}
.sobre-avatar{
  width:80px;height:80px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(145deg,#15BEBE 0%,#0A7A7A 100%);
  display:grid;place-items:center;
  font-family:var(--mono);font-size:30px;font-weight:700;color:#fff;
  box-shadow:0 4px 16px rgba(19,168,168,.35);
}
.sobre-bio{flex:1;min-width:200px}
.sobre-bio strong{font-size:16px;color:var(--ink);display:block;margin-bottom:4px}
.sobre-bio span{font-size:13px;color:var(--ink-2)}
.sobre-badges{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.sobre-badge{font-size:11px;font-weight:600;padding:3px 10px;border-radius:99px;background:rgba(19,168,168,.1);color:var(--teal-2);border:1px solid rgba(19,168,168,.2)}
.contact-email-big{
  display:flex;align-items:center;gap:10px;
  background:rgba(19,168,168,.06);border:1px solid rgba(19,168,168,.2);
  border-radius:var(--radius);padding:14px 16px;margin:14px 0;
  font-family:var(--mono);font-size:14px;color:var(--teal-2);
  text-decoration:none;word-break:break-all;
}
.contact-email-big:hover{background:rgba(19,168,168,.1)}

/* =====================================================
   COOKIE BANNER
   ===================================================== */
#cookie-banner{
  position:fixed;bottom:0;left:0;right:0;z-index:190;
  background:#0A1F3D;color:#fff;
  padding:14px 16px;
  box-shadow:0 -4px 20px rgba(0,0,0,.3);
  transform:translateY(100%);
  transition:transform .3s ease;
  border-top:2px solid var(--teal);
}
#cookie-banner.show{transform:translateY(0)}
.cookie-inner{
  max-width:980px;margin:0 auto;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.cookie-text{flex:1;min-width:200px;font-size:13px;line-height:1.5;color:rgba(255,255,255,.85)}
.cookie-text button.cookie-policy-link{
  background:none;border:none;padding:0 2px;
  color:var(--teal);text-decoration:underline;cursor:pointer;
  font-family:inherit;font-size:13px;
}
.cookie-actions{display:flex;gap:8px;flex-wrap:wrap;flex-shrink:0}
.cookie-btn{
  height:40px;padding:0 18px;border-radius:var(--radius);
  font-size:13px;font-weight:600;cursor:pointer;
  font-family:inherit;border:1px solid;
  white-space:nowrap;
  transition:background .12s,color .12s,border-color .12s;
}
.cookie-btn-accept{background:var(--teal);color:#fff;border-color:var(--teal)}
.cookie-btn-accept:hover{background:var(--teal-2);border-color:var(--teal-2)}
.cookie-btn-config{background:transparent;color:rgba(255,255,255,.75);border-color:rgba(255,255,255,.3)}
.cookie-btn-config:hover{color:#fff;border-color:rgba(255,255,255,.6)}

/* =====================================================
   BLOG / GUÍAS
   ===================================================== */
.blog-grid{display:grid;grid-template-columns:1fr;gap:10px}
@media(min-width:640px){.blog-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1100px){.blog-grid{grid-template-columns:repeat(3,1fr)}}
.blog-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;
  transition:border-color .15s,box-shadow .15s;
}
.blog-card:hover{border-color:#C9D2E0;box-shadow:var(--shadow-sm)}
.blog-card-body{padding:14px}
.blog-tag{
  display:inline-block;font-size:10px;font-weight:700;
  letter-spacing:.05em;text-transform:uppercase;
  padding:2px 8px;border-radius:99px;
  background:rgba(19,168,168,.1);color:var(--teal-2);
  margin-bottom:8px;
}
.blog-card h3{font-size:14px;font-weight:700;color:var(--navy-ink);margin:0 0 6px;line-height:1.35}
.blog-card .blog-preview{font-size:13px;color:var(--ink-2);line-height:1.6;margin:0 0 0}
.blog-article-full{display:none;font-size:13px;color:var(--ink-2);line-height:1.65;margin-top:10px}
.blog-card.blog-expanded .blog-article-full{display:block}
.blog-card-footer{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 14px;border-top:1px solid var(--line-2);
  font-size:11px;color:var(--ink-3);font-family:var(--mono);
}
.blog-read-btn{
  font-size:12px;font-weight:600;color:var(--teal-2);
  background:none;border:none;cursor:pointer;font-family:inherit;
  padding:0;display:inline-flex;align-items:center;gap:4px;
}
.blog-read-btn:hover{text-decoration:underline}

/* =====================================================
   MULTIPAGE ADDITIONS / FIXES
   ===================================================== */
.tool-link-card .tool-head{color:inherit;text-decoration:none;cursor:pointer}
.tool-link-card .tool-head:hover{text-decoration:none}
.tool-link-card .tool-toggle{transform:none!important}
.tool-link-card:hover .tool-toggle{color:var(--teal-2);background:rgba(19,168,168,.1)}
.tool-current .tool-head{cursor:pointer}
.breadcrumb{
  display:flex;align-items:center;gap:7px;flex-wrap:wrap;
  margin:0 0 var(--gap);padding:10px 14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  font-size:13px;color:var(--ink-2)
}
.breadcrumb a{color:var(--navy-2);font-weight:600}
.breadcrumb span[aria-hidden="true"]{color:var(--ink-3)}
.related-grid{display:grid;grid-template-columns:1fr;gap:8px;margin-top:8px}
.related-card{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:12px 14px;text-decoration:none;color:inherit;min-height:56px}
.related-card:hover{border-color:#C9D2E0;box-shadow:var(--shadow-sm);text-decoration:none}
.related-card strong{display:block;font-size:14px;color:var(--ink);font-weight:600}
.related-card span{display:block;font-size:12px;color:var(--ink-2)}
@media(min-width:640px){.related-grid{grid-template-columns:repeat(3,1fr)}}


/* SEO / GEO content blocks */
.seo-tool-content{margin-top:18px;display:grid;gap:16px}.seo-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:20px}.seo-card h2{font-size:20px;line-height:1.2;margin:0 0 10px;color:var(--navy-ink)}.seo-card h3{font-size:15px;margin:16px 0 8px;color:var(--navy-ink)}.seo-card p{margin:0 0 10px;color:var(--ink-2)}.seo-card ul{margin:8px 0 0;padding-left:20px;color:var(--ink-2)}.seo-card li{margin:4px 0}.formula-list{font-family:var(--mono);font-size:13px;background:#F7FAFC;border:1px solid var(--line-2);border-radius:8px;padding:12px 14px}.review-box{border-left:4px solid var(--teal);background:linear-gradient(90deg,rgba(19,168,168,.08),rgba(255,255,255,0));padding:14px 16px;border-radius:8px}.sources-list a{color:var(--navy-2);font-weight:700}.sources-list a:hover{text-decoration:underline}.answer-fast{font-weight:700;color:var(--navy-ink)}


.single-tool-grid{grid-template-columns:minmax(0,1fr)}
.current-tool-section .tool-current{max-width:920px}
.static-tools-nav{margin:14px 0 24px;padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}
.static-tools-nav h2{font-size:18px;margin:0 0 10px}
.static-tools-links{display:flex;flex-wrap:wrap;gap:8px}
.static-tools-links a{font-size:13px;border:1px solid var(--line);border-radius:999px;padding:8px 10px;background:#f8fafc;color:var(--ink);text-decoration:none}
.static-tools-links a:hover{border-color:rgba(37,99,235,.35);background:#eff6ff}


/* SEO round 2: landing quirúrgica para calcular IVA */
body.landing-iva .ad-slot,
body.landing-iva .right-rail { display: none !important; }
body.landing-iva .layout { grid-template-columns: minmax(0, 960px); justify-content: center; max-width: 1040px; padding-top: 16px; }
body.landing-iva .sidebar { display: none; }
body.landing-iva .page-hero { padding: 18px 20px; margin-bottom: 14px; }
body.landing-iva .page-hero h1 { font-size: clamp(30px, 5vw, 54px); line-height: .98; letter-spacing: -0.045em; }
body.landing-iva .page-hero p { max-width: 760px; font-size: 17px; }
body.landing-iva .hero-stats { display: none; }
body.landing-iva .current-tool-section { margin-top: 0; }
body.landing-iva .single-tool-grid { grid-template-columns: 1fr; }
body.landing-iva .tool-card { border-width: 1px; box-shadow: 0 24px 70px rgba(0,0,0,.12); }
body.landing-iva .tool-card.open .tool-body { display: block; }
body.landing-iva .cat-header .cat-meta::after { content: ' · Resultado instantáneo · Copiar resultado'; color: var(--teal); }
.review-box .review-meta-list, .method-list { margin: 10px 0 0; padding-left: 18px; color: var(--ink-2); }
.review-box .review-meta-list li, .method-list li { margin: 6px 0; }
.source-note { font-size: 13px; color: var(--ink-2); margin-top: 10px; }
@media (max-width: 880px){ body.landing-iva .layout { padding-top: 10px; } body.landing-iva .page-hero { padding: 16px; } }