/* ═══════════════════════════════════════════════════════════════
   DDR Alarma · Sistema de diseño "Pro" (compartido por las 4 webs)
   Misma línea que la tienda ddr.com.ar: Inter + Sora, rojo #C0392B,
   tarjetas blancas, sombras suaves, animaciones sutiles.
   ═══════════════════════════════════════════════════════════════ */
:root {
  --bg: #f5f6fa; --surface: #fff; --surface-2: #eef0f5; --surface-3: #e3e6ee;
  --text: #0f1222; --text-2: #4b5068; --muted: #7c8199;
  --border: rgba(15,18,34,.09); --border-strong: rgba(15,18,34,.18);
  --accent: #C0392B; --accent-ink: #fff; --accent-soft: rgba(192,57,43,.1);
  --accent-2: #2563eb; --violet: #7c3aed; --success: #12a150; --warning: #e68a00; --danger: #d92d20;
  --wa: #25d366; --wa-ink: #0b3d1f;
  --ink: #0f1222; --ink-2: #171b2e;                   /* bloques oscuros */
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'Sora', 'Inter', system-ui, sans-serif;
  --r-sm: 8px; --r-md: 12px; --r-lg: 18px; --r-xl: 26px;
  --header-h: 72px; --container: 1200px; --gutter: 24px;
  --shadow-xs: 0 1px 2px rgba(15,18,34,.05);
  --shadow-sm: 0 2px 8px rgba(15,18,34,.06), 0 1px 2px rgba(15,18,34,.04);
  --shadow-md: 0 10px 30px -10px rgba(15,18,34,.18), 0 4px 10px -6px rgba(15,18,34,.08);
  --shadow-lg: 0 30px 60px -20px rgba(15,18,34,.28);
  --ease: cubic-bezier(.22,1,.36,1); --t: .25s var(--ease);
}

/* ── Base ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body { margin: 0; font-family: var(--font-body); font-size: 16px; line-height: 1.55; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; overflow-x: hidden; padding-top: var(--header-h); }
img, svg, video, iframe { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; padding: 0; }
input, select, textarea { font: inherit; color: inherit; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 700; line-height: 1.15; letter-spacing: -.02em; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--accent); color: #fff; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: 72px 0; position: relative; }
.section--tight { padding: 40px 0; }
.section--dark { background: var(--ink); color: #fff; }
.section--dark .section-sub, .section--dark .muted { color: rgba(255,255,255,.72); }
.section--soft { background: var(--surface-2); }
.kicker { display: block; font-size: .74rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
.section-title { font-size: clamp(1.6rem, 2.8vw, 2.3rem); margin-bottom: 12px; text-wrap: balance; }
.section-sub { color: var(--text-2); font-size: 1.05rem; max-width: 680px; margin-bottom: 32px; line-height: 1.6; }
.center { text-align: center; }
.center .section-sub { margin-left: auto; margin-right: auto; }
.grad { background: linear-gradient(92deg, var(--accent), #E74C3C 55%, var(--violet) 120%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); box-shadow: var(--shadow-sm); }

/* ── Botones ──────────────────────────────────────────────────── */
.btn { --bg: var(--surface-2); --fg: var(--text); --bd: transparent; position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 24px; border-radius: 999px; border: 1px solid var(--bd); background: var(--bg); color: var(--fg); font-weight: 600; font-size: .95rem; line-height: 1.2; white-space: nowrap; overflow: hidden; transition: transform var(--t), box-shadow var(--t), background var(--t), color var(--t), border-color var(--t); -webkit-tap-highlight-color: transparent; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:active { transform: scale(.98); }
.btn-primary { --bg: var(--accent); --fg: #fff; box-shadow: 0 10px 22px -10px rgba(192,57,43,.7); }
.btn-primary:hover { --bg: #e62e47; }
.btn-secondary { --bg: var(--surface); --bd: var(--border-strong); }
.btn-secondary:hover { --bd: var(--accent); --fg: var(--accent); }
.btn-ghost { --bg: transparent; --fg: var(--text-2); box-shadow: none; }
.btn-ghost:hover { --bg: var(--accent-soft); --fg: var(--accent); transform: none; box-shadow: none; }
.btn-light { --bg: #fff; --fg: var(--ink); }
.btn-outline-light { --bg: transparent; --fg: #fff; --bd: rgba(255,255,255,.45); }
.btn-outline-light:hover { --bg: rgba(255,255,255,.1); }
.btn-wa { --bg: var(--wa); --fg: var(--wa-ink); box-shadow: 0 10px 22px -10px rgba(37,211,102,.7); }
.btn-wa:hover { --bg: #1fb85a; }
.btn-lg { padding: 16px 30px; font-size: 1.02rem; }
.btn-sm { padding: 9px 16px; font-size: .84rem; }
.btn svg { width: 20px; height: 20px; flex-shrink: 0; }
.ripple { position: absolute; left: var(--rx, 50%); top: var(--ry, 50%); width: 10px; height: 10px; margin: -5px 0 0 -5px; border-radius: 50%; background: currentColor; opacity: .25; pointer-events: none; animation: ripple .6s ease-out forwards; }
@keyframes ripple { to { transform: scale(40); opacity: 0; } }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── Header ───────────────────────────────────────────────────── */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 500; height: var(--header-h); background: rgba(255,255,255,.82); backdrop-filter: saturate(180%) blur(18px); -webkit-backdrop-filter: saturate(180%) blur(18px); border-bottom: 1px solid transparent; transition: height var(--t), box-shadow var(--t), border-color var(--t); }
.header.scrolled { --header-h: 62px; border-bottom-color: var(--border); box-shadow: 0 8px 30px -18px rgba(15,18,34,.25); }
.header-inner { height: 100%; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px; }
.logo { display: inline-flex; align-items: center; gap: 10px; line-height: 1; }
.logo-icon { width: 38px; height: 38px; border-radius: 12px; background: linear-gradient(135deg, var(--accent), #E74C3C); display: grid; place-items: center; box-shadow: 0 8px 18px -8px rgba(192,57,43,.8); transition: transform var(--t); }
.logo-icon svg { width: 22px; height: 22px; }
.logo:hover .logo-icon { transform: rotate(-8deg) scale(1.05); }
.logo-text { display: flex; flex-direction: column; gap: 2px; }
.logo-name { font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; letter-spacing: -.02em; }
.logo-tag { font-size: .6rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--accent); }
.nav { display: flex; align-items: center; justify-content: center; gap: 2px; }
.nav a { display: inline-flex; align-items: center; gap: 6px; padding: 9px 13px; border-radius: 999px; font-size: .9rem; font-weight: 600; color: var(--text-2); white-space: nowrap; transition: color var(--t), background var(--t); }
.nav a:hover { color: var(--text); background: var(--surface-2); }
.nav a.active { color: var(--accent); background: var(--accent-soft); }
.nav a .em { font-size: 1rem; }
.nav a.external::after { content: '↗'; font-size: .72em; opacity: .6; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.header-actions .btn { padding: 9px 16px; font-size: .86rem; }
.menu-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 42px; height: 42px; border-radius: 999px; padding: 0 11px; }
.menu-toggle span { display: block; height: 2px; border-radius: 2px; background: var(--text); transition: transform .3s var(--ease), opacity .2s; }
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav { position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; z-index: 490; background: var(--bg); padding: 16px var(--gutter) 110px; display: flex; flex-direction: column; gap: 4px; overflow-y: auto; opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity .25s var(--ease), transform .3s var(--ease), visibility 0s .3s; }
.mobile-nav.open { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.mobile-nav a { display: flex; align-items: center; gap: 12px; padding: 14px 12px; border-radius: var(--r-md); font-size: 1.1rem; font-weight: 600; color: var(--text-2); }
.mobile-nav a.active { color: var(--accent); background: var(--accent-soft); }
.mobile-nav a .em { font-size: 1.3rem; width: 30px; text-align: center; }
.mobile-nav .sep { height: 1px; background: var(--border); margin: 8px 0; }
.mobile-nav .btn { margin-top: 8px; }
body.menu-open { overflow: hidden; }

/* Barra inferior (celular) */
.bottom-nav { display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 480; padding: 6px 8px calc(6px + env(safe-area-inset-bottom, 0px)); background: rgba(255,255,255,.92); backdrop-filter: blur(18px) saturate(180%); -webkit-backdrop-filter: blur(18px) saturate(180%); border-top: 1px solid var(--border); grid-template-columns: repeat(5, 1fr); }
.bottom-nav a { display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 6px 2px; border-radius: var(--r-md); color: var(--muted); font-size: .62rem; font-weight: 600; text-align: center; }
.bottom-nav a .em { font-size: 1.25rem; line-height: 1.1; }
.bottom-nav a.active { color: var(--accent); }

/* WhatsApp flotante + subir */
.wa-float { position: fixed; right: 20px; bottom: 24px; z-index: 450; display: inline-flex; align-items: center; gap: 10px; padding: 14px 20px; border-radius: 999px; background: var(--wa); color: var(--wa-ink); font-weight: 700; font-size: .92rem; box-shadow: 0 14px 30px -10px rgba(37,211,102,.8); transition: transform var(--t), box-shadow var(--t); }
.wa-float:hover { transform: translateY(-3px); }
.wa-float svg { width: 24px; height: 24px; }
.scroll-top { position: fixed; right: 24px; bottom: 92px; z-index: 450; width: 46px; height: 46px; border-radius: 999px; display: grid; place-items: center; background: var(--surface); color: var(--text); border: 1px solid var(--border); box-shadow: var(--shadow-md); opacity: 0; transform: translateY(12px) scale(.9); pointer-events: none; transition: opacity var(--t), transform var(--t), background var(--t); }
.scroll-top.visible { opacity: 1; transform: none; pointer-events: auto; }
.scroll-top:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ── Hero ─────────────────────────────────────────────────────── */
.hero { position: relative; overflow: hidden; isolation: isolate; padding: 64px 0 56px; }
.hero-bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hero-blob { position: absolute; border-radius: 50%; filter: blur(46px); opacity: .85; animation: float 14s ease-in-out infinite alternate; }
.hero-blob.b1 { width: 560px; height: 560px; left: -160px; top: -200px; background: radial-gradient(circle, #E04A3A 0%, rgba(224,74,58,.8) 32%, rgba(224,74,58,0) 68%); }
.hero-blob.b2 { width: 460px; height: 460px; right: -120px; bottom: -200px; background: radial-gradient(circle, rgba(124,58,237,.55) 0%, rgba(124,58,237,0) 66%); opacity: .5; animation-delay: -6s; animation-duration: 18s; }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(15,18,34,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(15,18,34,.06) 1px, transparent 1px); background-size: 48px 48px; mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 30%, transparent 75%); }
@keyframes float { from { transform: translate3d(0,0,0) scale(1); } to { transform: translate3d(40px,30px,0) scale(1.12); } }
.hero-inner { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 48px; align-items: center; }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 8px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-size: .74rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--text-2); box-shadow: var(--shadow-xs); margin-bottom: 20px; }
.hero-tag::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px rgba(18,161,80,.2); animation: blink 2s infinite; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
.hero-title { font-size: clamp(2.2rem, 4.6vw, 3.8rem); font-weight: 800; line-height: 1.05; letter-spacing: -.035em; margin-bottom: 18px; text-wrap: balance; }
.hero-sub { font-size: 1.12rem; color: var(--text-2); max-width: 540px; line-height: 1.6; margin-bottom: 26px; }
.hero-price { display: inline-flex; flex-direction: column; gap: 2px; padding: 14px 18px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm); margin-bottom: 24px; }
.hero-price .hp-l { font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.hero-price .hp-v { font-family: var(--font-display); font-size: 1.6rem; font-weight: 800; letter-spacing: -.02em; }
.hero-price .hp-v small { font-size: .9rem; font-weight: 600; color: var(--text-2); }
.hero-price .hp-n { font-size: .8rem; color: var(--text-2); }
.hero-stats { display: flex; gap: 28px; flex-wrap: wrap; margin-top: 32px; padding-top: 22px; border-top: 1px solid var(--border); }
.hero-stats li { display: flex; flex-direction: column; gap: 2px; }
.hero-stats strong { font-family: var(--font-display); font-size: 1.3rem; letter-spacing: -.02em; }
.hero-stats span { font-size: .8rem; color: var(--muted); }
.hero-note { font-size: .85rem; color: var(--text-2); margin-top: 16px; }

/* ── Marco de celular (la app real, embebida) ────────────────── */
.phone { position: relative; width: 100%; max-width: 330px; margin: 0 auto; background: #1c2333; border-radius: 44px; padding: 12px; border: 2px solid #38445c; box-shadow: var(--shadow-lg), inset 0 0 0 1px rgba(255,255,255,.06); }
.phone::before { content: ''; position: absolute; top: 12px; left: 50%; transform: translateX(-50%); width: 96px; height: 22px; background: #0d1420; border-radius: 0 0 16px 16px; z-index: 3; }
.phone-screen { position: relative; border-radius: 34px; overflow: hidden; background: #0a0e16; aspect-ratio: 9 / 19; }
.phone-screen iframe { width: 100%; height: 100%; border: 0; background: #0a0e16; }
.phone-cap { text-align: center; font-size: .82rem; color: var(--muted); margin-top: 14px; line-height: 1.5; }
.phone-cap b { color: var(--text); }
.phone-wrap { display: flex; flex-direction: column; align-items: center; }
.demo-tip { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; background: var(--ink); color: #fff; font-size: .8rem; font-weight: 600; margin-top: 12px; }
.demo-tip .em { font-size: 1rem; }

/* ── Grillas de tarjetas ──────────────────────────────────────── */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.feature { padding: 24px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-xs); transition: transform var(--t), box-shadow var(--t), border-color var(--t); }
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(192,57,43,.3); }
.feature .em { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; font-size: 1.5rem; background: var(--accent-soft); margin-bottom: 14px; }
.feature h3 { font-size: 1.05rem; margin-bottom: 6px; }
.feature p { color: var(--text-2); font-size: .92rem; line-height: 1.55; }
.feature .tag { display: inline-block; margin-top: 10px; font-size: .7rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; background: var(--surface-2); color: var(--text-2); }
.feature .tag.ok { background: rgba(18,161,80,.12); color: var(--success); }
.feature .tag.info { background: rgba(37,99,235,.12); color: var(--accent-2); }
.section--dark .feature { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.1); color: #fff; }
.section--dark .feature p { color: rgba(255,255,255,.72); }
.section--dark .feature .em { background: rgba(255,255,255,.1); }
.section--dark .feature:hover { border-color: rgba(192,57,43,.5); }

/* Pasos numerados */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: paso; }
.step { position: relative; padding: 24px 22px 22px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); }
.step::before { counter-increment: paso; content: counter(paso, decimal-leading-zero); display: inline-block; font-family: var(--font-display); font-weight: 800; font-size: .85rem; letter-spacing: .08em; color: var(--accent); margin-bottom: 10px; }
.step .em { font-size: 1.8rem; margin-bottom: 8px; }
.step h3 { font-size: 1rem; margin-bottom: 6px; }
.step p { color: var(--text-2); font-size: .9rem; line-height: 1.5; }

/* Lista de checks */
.checks { display: grid; gap: 10px; }
.checks li { display: flex; gap: 10px; align-items: flex-start; font-size: .95rem; line-height: 1.45; color: var(--text-2); }
.checks li::before { content: '✓'; flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%; background: rgba(18,161,80,.12); color: var(--success); font-weight: 800; font-size: .8rem; display: grid; place-items: center; margin-top: 1px; }
.checks.cross li::before { content: '✕'; background: rgba(217,45,32,.1); color: var(--danger); }
.checks b { color: var(--text); }

/* Comparativa */
.compare { overflow-x: auto; border-radius: var(--r-lg); border: 1px solid var(--border); background: var(--surface); box-shadow: var(--shadow-sm); }
.compare table { width: 100%; border-collapse: collapse; min-width: 640px; font-size: .92rem; }
.compare th, .compare td { padding: 13px 16px; text-align: center; border-bottom: 1px solid var(--border); }
.compare th { font-family: var(--font-display); font-size: .82rem; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); background: var(--surface-2); }
.compare td:first-child, .compare th:first-child { text-align: left; font-weight: 600; color: var(--text); }
.compare tr:last-child td { border-bottom: 0; }
.compare .yes { color: var(--success); font-weight: 800; }
.compare .no { color: var(--muted); }
.compare .hl { background: rgba(192,57,43,.05); }
.compare .price { font-family: var(--font-display); font-weight: 800; font-size: 1rem; }
.compare small { display: block; color: var(--muted); font-weight: 500; font-size: .75rem; }

/* Precio / plan */
.plan { position: relative; padding: 32px; border-radius: var(--r-xl); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-md); }
.plan.dark { background: var(--ink); color: #fff; border: 0; }
.plan .badge { position: absolute; top: -14px; left: 24px; padding: 6px 12px; border-radius: 999px; background: var(--accent); color: #fff; font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.plan .p-name { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; }
.plan .p-desc { color: var(--text-2); font-size: .92rem; margin: 4px 0 14px; }
.plan.dark .p-desc { color: rgba(255,255,255,.72); }
.plan .p-price { font-family: var(--font-display); font-size: 2.4rem; font-weight: 800; letter-spacing: -.03em; line-height: 1; }
.plan .p-price small { font-size: 1rem; font-weight: 600; color: var(--text-2); letter-spacing: 0; }
.plan.dark .p-price small { color: rgba(255,255,255,.7); }
.plan .p-note { font-size: .85rem; color: var(--text-2); margin-top: 6px; }
.plan.dark .p-note { color: rgba(255,255,255,.72); }
.plan .checks { margin: 18px 0 22px; }
.plan.dark .checks li { color: rgba(255,255,255,.82); }
.plan.dark .checks b { color: #fff; }
.plan .fin { padding: 12px 14px; border-radius: var(--r-md); background: var(--surface-2); font-size: .85rem; color: var(--text-2); margin-top: 10px; }
.plan.dark .fin { background: rgba(255,255,255,.08); color: rgba(255,255,255,.8); }
.plan .actions { margin-top: 18px; }

/* FAQ */
.faq { max-width: 820px; margin: 0 auto; display: grid; gap: 8px; }
.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-md); padding: 0 18px; transition: border-color var(--t); }
.faq details[open] { border-color: rgba(192,57,43,.35); }
.faq summary { list-style: none; cursor: pointer; padding: 15px 0; font-weight: 600; display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: var(--surface-2); display: grid; place-items: center; font-weight: 700; color: var(--text-2); transition: transform var(--t), background var(--t), color var(--t); }
.faq details[open] summary::after { transform: rotate(45deg); background: var(--accent); color: #fff; }
.faq .a { padding: 0 0 16px; color: var(--text-2); font-size: .95rem; line-height: 1.6; }
.faq .a b { color: var(--text); }

/* Tabs (kits) */
.tabs { display: flex; gap: 6px; padding: 5px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); overflow-x: auto; scrollbar-width: none; margin-bottom: 24px; }
.tabs::-webkit-scrollbar { display: none; }
.tab { flex: 1; min-width: max-content; padding: 10px 16px; border-radius: 999px; font-size: .88rem; font-weight: 600; color: var(--text-2); white-space: nowrap; transition: background var(--t), color var(--t); }
.tab:hover { color: var(--text); }
.tab.active { background: var(--text); color: var(--bg); }
.tab .t-sub { display: block; font-size: .68rem; font-weight: 600; opacity: .7; }
.tab-panel { display: none; animation: fadeIn .35s var(--ease); }
.tab-panel.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Kit (panel detallado) */
.kit { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); gap: 28px; align-items: start; }
.kit-img { border-radius: var(--r-xl); overflow: hidden; background: var(--surface); border: 1px solid var(--border); aspect-ratio: 4/3; }
.kit-img img { width: 100%; height: 100%; object-fit: cover; }
.kit-body h3 { font-size: 1.5rem; margin-bottom: 8px; }
.kit-body .k-desc { color: var(--text-2); margin-bottom: 16px; line-height: 1.6; }
.kit-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.kit-tags span { font-size: .7rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.kit-body .checks { margin: 14px 0 18px; grid-template-columns: 1fr 1fr; }
.kit-body .checks li { font-size: .88rem; }
.ideal { padding: 12px 14px; border-radius: var(--r-md); background: var(--surface-2); font-size: .88rem; color: var(--text-2); }
.ideal b { color: var(--text); }

/* Calculadora */
.calc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .9fr); gap: 24px; align-items: start; }
.calc-form { padding: 24px; border-radius: var(--r-xl); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.calc-form label { display: block; font-size: .82rem; font-weight: 700; color: var(--text-2); margin: 14px 0 6px; }
.calc-form label:first-child { margin-top: 0; }
.calc-form select, .calc-form input[type="number"] { width: 100%; padding: 12px 14px; border-radius: var(--r-md); border: 1px solid var(--border-strong); background: var(--surface); font-size: .95rem; outline: none; }
.calc-form select:focus, .calc-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.calc-form input[type="range"] { width: 100%; accent-color: var(--accent); margin-top: 8px; }
.calc-form .chk { display: flex; align-items: center; gap: 10px; font-weight: 500; color: var(--text); font-size: .92rem; margin-top: 14px; }
.calc-form .chk input { width: 18px; height: 18px; accent-color: var(--accent); }
.calc-out { padding: 28px; border-radius: var(--r-xl); background: var(--ink); color: #fff; box-shadow: var(--shadow-lg); }
.calc-out .co-l { font-size: .74rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.6); }
.calc-out .co-v { font-family: var(--font-display); font-size: 2.4rem; font-weight: 800; letter-spacing: -.03em; line-height: 1.1; color: #fff; }
.calc-out .co-v small { font-size: 1rem; font-weight: 600; color: rgba(255,255,255,.7); letter-spacing: 0; }
.calc-out .co-row { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-top: 1px solid rgba(255,255,255,.12); font-size: .9rem; color: rgba(255,255,255,.8); }
.calc-out .co-row b { color: #fff; }
.calc-out .co-main { padding-bottom: 16px; }
.calc-out .actions { margin-top: 18px; }
.calc-out .note { font-size: .78rem; color: rgba(255,255,255,.6); margin-top: 12px; line-height: 1.5; }

/* Barra de confianza */
.trust { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.trust-item { display: flex; align-items: center; gap: 12px; padding: 16px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-xs); transition: transform var(--t), box-shadow var(--t); }
a.trust-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.trust-item .em { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-size: 1.4rem; background: var(--accent-soft); flex-shrink: 0; }
.trust-item strong { display: block; font-size: .88rem; }
.trust-item small { display: block; font-size: .78rem; color: var(--muted); line-height: 1.35; margin-top: 2px; }

/* Franja CTA oscura */
.cta-band { position: relative; overflow: hidden; padding: 56px 32px; border-radius: var(--r-xl); background: var(--ink); color: #fff; text-align: center; }
.cta-band::before { content: ''; position: absolute; inset: -40%; background: conic-gradient(from 180deg at 50% 50%, rgba(192,57,43,.6), transparent 30%, rgba(124,58,237,.5) 60%, transparent 80%); filter: blur(60px); opacity: .5; animation: spinSlow 18s linear infinite; pointer-events: none; }
@keyframes spinSlow { to { transform: rotate(360deg); } }
.cta-band > * { position: relative; }
.cta-band h2 { font-size: clamp(1.5rem, 2.8vw, 2.2rem); margin-bottom: 10px; }
.cta-band p { color: rgba(255,255,255,.78); max-width: 620px; margin: 0 auto 24px; }
.cta-band .actions { justify-content: center; }

/* Productos de la familia DDR (relación entre los 4 sitios) */
.family { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.family a { display: flex; flex-direction: column; gap: 10px; padding: 22px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); transition: transform var(--t), box-shadow var(--t), border-color var(--t); position: relative; overflow: hidden; }
.family a::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: linear-gradient(90deg, var(--accent), var(--violet)); transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease); }
.family a:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(192,57,43,.3); }
.family a:hover::after { transform: scaleX(1); }
.family a.current { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.family .em { width: 46px; height: 46px; border-radius: 13px; background: var(--accent-soft); display: grid; place-items: center; font-size: 1.4rem; }
.family h3 { font-size: 1rem; }
.family p { font-size: .85rem; color: var(--text-2); line-height: 1.5; flex: 1; }
.family .go { font-size: .82rem; font-weight: 700; color: var(--accent); }
.family .cur { font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }

/* Quiénes somos */
.about { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; align-items: center; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.about-stats div { padding: 20px 14px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); text-align: center; }
.about-stats strong { display: block; font-family: var(--font-display); font-size: 1.5rem; letter-spacing: -.02em; }
.about-stats span { font-size: .78rem; color: var(--muted); }
.about p { color: var(--text-2); line-height: 1.65; margin-bottom: 14px; }
.about p b { color: var(--text); }

/* Contacto */
.contact { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; align-items: start; }
.contact-card { padding: 28px; border-radius: var(--r-xl); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.contact-card h3 { font-size: 1.2rem; margin-bottom: 6px; }
.contact-card .meta { color: var(--text-2); font-size: .92rem; line-height: 1.7; margin-bottom: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.field label { font-size: .8rem; font-weight: 700; color: var(--text-2); }
.field input, .field select, .field textarea { width: 100%; padding: 12px 14px; border-radius: var(--r-md); border: 1px solid var(--border-strong); background: var(--surface); font-size: .95rem; outline: none; transition: border-color var(--t), box-shadow var(--t); }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.field textarea { min-height: 96px; resize: vertical; }
.choices { display: flex; gap: 8px; flex-wrap: wrap; }
.choices label { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--border-strong); font-size: .86rem; font-weight: 600; cursor: pointer; background: var(--surface); }
.choices input { display: none; }
.choices label:has(input:checked) { background: var(--accent); color: #fff; border-color: var(--accent); }

/* Footer */
.footer { margin-top: 48px; padding: 56px 0 28px; background: var(--surface); border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 32px; padding-bottom: 32px; }
.footer h4 { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 14px; }
.footer li, .footer p { color: var(--text-2); font-size: .9rem; line-height: 1.6; }
.footer ul { display: flex; flex-direction: column; gap: 7px; }
.footer a:hover { color: var(--accent); }
.footer .logo { margin-bottom: 12px; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; padding-top: 20px; border-top: 1px solid var(--border); font-size: .8rem; color: var(--muted); text-align: center; }
.footer-bottom p { font-size: .8rem; }
.footer-legal { max-width: 760px; margin: 0 auto; }

/* Reveal */
[data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); transition-delay: var(--d, 0s); }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* Misc */
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; font-size: .74rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.pill.ok { background: rgba(18,161,80,.12); color: var(--success); }
.pill.warn { background: rgba(230,138,0,.14); color: var(--warning); }
.pill.info { background: rgba(37,99,235,.12); color: var(--accent-2); }
.pill.red { background: var(--accent-soft); color: var(--accent); }
.note { padding: 14px 16px; border-radius: var(--r-md); background: var(--surface); border: 1px dashed var(--border-strong); font-size: .9rem; color: var(--text-2); line-height: 1.55; }
.note b { color: var(--text); }
.honest { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.honest div { padding: 18px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border); font-size: .9rem; color: var(--text-2); line-height: 1.5; }
.honest div .em { font-size: 1.4rem; margin-bottom: 6px; display: block; }
.honest div b { color: var(--text); display: block; margin-bottom: 2px; }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 1100px) { .nav a { padding: 8px 10px; font-size: .85rem; } }
@media (max-width: 1000px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .grid-4, .grid-5, .steps, .trust, .family { grid-template-columns: repeat(2, 1fr); }
  .kit, .calc, .about, .contact { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  :root { --header-h: 62px; }
  .header-inner { grid-template-columns: auto 1fr auto; }
  .header .nav, .header-actions .nav-cta { display: none; }
  .menu-toggle { display: flex; }
  .logo { justify-self: center; }
  .bottom-nav { display: grid; }
  body { padding-bottom: calc(68px + env(safe-area-inset-bottom, 0px)); }
  .wa-float { bottom: 84px; right: 16px; padding: 14px; border-radius: 50%; }
  .wa-float span { display: none; }
  .scroll-top { bottom: 148px; right: 16px; width: 42px; height: 42px; }
}
@media (max-width: 700px) {
  .section { padding: 48px 0; }
  .hero { padding: 28px 0 36px; }
  .grid-2, .grid-3, .honest, .about-stats { grid-template-columns: 1fr; }
  .grid-4, .grid-5, .trust { grid-template-columns: 1fr 1fr; }
  .steps, .family { grid-template-columns: 1fr; }
  .kit-body .checks { grid-template-columns: 1fr; }
  .hero-stats { gap: 16px 22px; }
  .actions .btn { flex: 1 1 45%; }
  .trust-item { padding: 12px; gap: 10px; }
  .trust-item .em { width: 36px; height: 36px; font-size: 1.1rem; }
  .trust-item small { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .footer-bottom { flex-direction: column; }
  .cta-band { padding: 40px 20px; }
  .plan { padding: 24px; }
  .calc-out .co-v { font-size: 2rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* Variantes usadas en las landings */
.steps-5 { grid-template-columns: repeat(5, 1fr); }
.trust-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 1000px) { .steps-5 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 700px) { .steps-5, .trust-2 { grid-template-columns: 1fr; } }
@media (max-width: 700px) { .phone { max-width: 290px; border-radius: 38px; padding: 10px; } .phone-screen { border-radius: 30px; } .hero-inner { gap: 28px; } }
.logo-text { white-space: nowrap; }
@media (max-width: 900px) { .header-actions .btn-wa { padding: 9px 11px; } .header-actions .wa-txt { display: none; } }

/* ═══ Modo noche (data-theme="dark" en <html>; lo maneja pro.js) ═══ */
:root[data-theme="dark"] {
  --bg: #0b0d14; --surface: #12151f; --surface-2: #1a1e2b; --surface-3: #242939;
  --text: #eef0f6; --text-2: #aab0c3; --muted: #7b8196;
  --border: rgba(255,255,255,.08); --border-strong: rgba(255,255,255,.16);
  --accent: #E04A3A; --accent-soft: rgba(224,74,58,.16);
  --ink: #161a27; --ink-2: #1d2232;
  --shadow-xs: 0 1px 2px rgba(0,0,0,.3); --shadow-sm: 0 2px 8px rgba(0,0,0,.35);
  --shadow-md: 0 12px 32px -10px rgba(0,0,0,.6); --shadow-lg: 0 30px 60px -20px rgba(0,0,0,.7);
  color-scheme: dark;
}
:root[data-theme="dark"] .header, :root[data-theme="dark"] .bottom-nav { background: rgba(11,13,20,.82); }
:root[data-theme="dark"] .header.scrolled { box-shadow: 0 8px 30px -14px rgba(0,0,0,.8); }
:root[data-theme="dark"] .hero-grid { background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); }
:root[data-theme="dark"] .hero-blob { opacity: .22; }
:root[data-theme="dark"] .kit-img, :root[data-theme="dark"] .cat-card-img { background: var(--surface-2); }
:root[data-theme="dark"] .btn-light { --bg: #fff; --fg: #0f1222; }
:root[data-theme="dark"] .plan.dark, :root[data-theme="dark"] .calc-out, :root[data-theme="dark"] .cta-band, :root[data-theme="dark"] .section--dark { background: var(--ink); border: 1px solid var(--border); }
:root[data-theme="dark"] .header-actions .nav-cta { --bg: var(--surface-2); }
:root[data-theme="dark"] .choices label { background: var(--surface-2); }
:root[data-theme="dark"] .phone { background: #0d1119; border-color: #2a3142; }
:root[data-theme="dark"] .footer { background: var(--surface); }
:root[data-theme="dark"] .note { background: var(--surface-2); }
:root[data-theme="dark"] .faq details { background: var(--surface); }
:root[data-theme="dark"] .trust-item, :root[data-theme="dark"] .feature, :root[data-theme="dark"] .step { background: var(--surface); }
.theme-toggle { display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 999px; font-size: 1.1rem; color: var(--text-2); transition: background var(--t), transform var(--t); }
.theme-toggle:hover { background: var(--surface-2); transform: translateY(-1px); }

/* 5/9: en pantallas de notebook (≤1440px) el menú no entraba y el botón de WhatsApp quedaba cortado. */
@media (max-width: 1440px) { .nav a { padding: 9px 10px; font-size: .86rem; } .nav a.external { display: none; } }
@media (max-width: 1180px) { .header-actions .nav-cta { display: none; } }