:root {
  color-scheme: light;
  /* Paleta compartida con MtgBrainTheme (androidApp/ui/theme/Theme.kt). */
  --primary: #2f6cb8;
  --primary-container: #d3e4f5;
  --secondary: #cf2c2b;
  --tertiary: #1b4870;
  --warning: #6b4a00;
  --warning-container: #ffe9b0;
  --error-container: #f9d8d6;
  --on-error-container: #5c1210;
  --deep-navy: #0b2e4a;
  --dimir-slate: #3f4359;
  --surface: #fffbfe;
  --surface-variant: #e1e2ec;
  --on-surface: #1c1b1f;
  --on-surface-variant: #45464f;
  --outline: #757780;
  --white: #ffffff;
  --radius-s: 4px;
  --radius-m: 8px;
  --radius-l: 12px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --primary: #6fa8dc;
  --primary-container: #2a4a63;
  --secondary: #3f4359;
  --tertiary: #9bb8d6;
  --warning: #ffd983;
  --warning-container: #4a3600;
  --error-container: #6b211e;
  --on-error-container: #f9d8d6;
  --surface: #101319;
  --surface-variant: #252a34;
  --on-surface: #e3e2e9;
  --on-surface-variant: #c4c6d0;
  --outline: #8e9099;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--on-surface); background: var(--surface); font-family: Roboto, "Segoe UI", sans-serif; }
a { color: inherit; }
.shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.eyebrow, .nav-link, .tag, .mini-label { font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 500; }

.top { background: var(--surface); border-bottom: 1px solid var(--surface-variant); }
.nav { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--on-surface); font-weight: 500; text-decoration: none; font-size: 1.25rem; }
.app-logo { width: 34px; height: 34px; border-radius: var(--radius-m); display: block; }
.mana-mark { display: grid; grid-template-columns: repeat(5, 7px); gap: 2px; }
.mana-mark i { width: 7px; height: 19px; border-radius: 99px; background: #fdf9ed; border: 1px solid #d3bc88; display: block; }
.mana-mark i:nth-child(2) { background: var(--primary); height: 24px; border: 0; }.mana-mark i:nth-child(3) { background: #252322; height: 16px; border: 0; }.mana-mark i:nth-child(4) { background: var(--secondary); height: 22px; border: 0; }.mana-mark i:nth-child(5) { background: #368f5e; height: 15px; border: 0; }
.nav-actions, .nav-links { display: flex; align-items: center; gap: 22px; }.nav-link { color: var(--on-surface-variant); text-decoration: none; }.nav-link:hover { color: var(--primary); }
.theme-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 40px; padding: 8px 10px; border: 1px solid var(--outline); border-radius: var(--radius-m); color: var(--on-surface-variant); background: transparent; font: 500 .75rem Roboto, "Segoe UI", sans-serif; cursor: pointer; }
.theme-toggle:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-container); }.theme-toggle:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 40px; padding: 10px 18px; border-radius: var(--radius-m); font-size: .875rem; font-weight: 500; text-decoration: none; transition: background .18s ease, box-shadow .18s ease; }
.nav-cta { color: var(--white); background: var(--primary); }.button:hover, .nav-cta:hover { box-shadow: 0 2px 7px rgba(47,108,184,.28); }

.hero { padding: 72px 0; background: var(--primary-container); border-bottom: 1px solid #b9cadc; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.eyebrow { color: var(--tertiary); }.hero h1, .section h2, .guide-head h1 { margin: 14px 0 20px; font-weight: 500; line-height: 1.08; letter-spacing: -.025em; }.hero h1 { font-size: clamp(2.5rem, 5vw, 4.25rem); max-width: 680px; }.hero h1 em { color: var(--primary); font-style: normal; }.hero-copy { max-width: 560px; color: var(--on-surface-variant); font-size: 1.125rem; line-height: 1.62; }
.hero-actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; }.button-primary { color: var(--white); background: var(--primary); }.button-secondary { color: var(--primary); border: 1px solid var(--primary); background: transparent; }.fine-print { margin-top: 12px; color: var(--on-surface-variant); font-size: .75rem; }
/* CTA secundario de iOS: tono discreto (no compite con el primario), señala que
   es exploratorio. */
.button-ios { margin-top: 12px; color: var(--on-surface-variant); border: 1px dashed var(--outline); background: transparent; cursor: pointer; font: 500 .875rem Roboto, "Segoe UI", sans-serif; }
.button-ios:hover { color: var(--primary); border-color: var(--primary); border-style: solid; background: var(--primary-container); box-shadow: none; }
.button-ios:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* Diálogo de interés en iOS. Usa los tokens del sitio -> funciona en claro y
   oscuro sin reglas extra. */
.ios-dialog { width: min(440px, calc(100% - 32px)); padding: 0; border: 1px solid var(--surface-variant); border-radius: var(--radius-l); background: var(--surface); color: var(--on-surface); box-shadow: 0 14px 34px rgba(11,46,74,.26); }
.ios-dialog::backdrop { background: rgba(11,46,74,.45); }
.ios-dialog-inner { padding: 24px; }
.ios-dialog h2 { margin: 0 0 10px; font-size: 1.4rem; font-weight: 500; line-height: 1.18; letter-spacing: -.02em; }
.ios-dialog p { margin: 0 0 20px; color: var(--on-surface-variant); font-size: .95rem; line-height: 1.6; }
.ios-dialog-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
.ios-dialog .button { cursor: pointer; font: 500 .875rem Roboto, "Segoe UI", sans-serif; }
.ios-dialog .button-text { color: var(--on-surface-variant); background: transparent; }
.ios-dialog .button-text:hover { color: var(--primary); background: var(--primary-container); box-shadow: none; }

.analysis-card { background: var(--surface); color: var(--on-surface); border: 1px solid #bdc8d4; border-radius: var(--radius-l); box-shadow: 0 5px 14px rgba(11,46,74,.16); overflow: hidden; }
.analysis-top { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--surface-variant); }.tag { color: var(--primary); }.status { display: flex; align-items: center; gap: 6px; font-size: .75rem; color: var(--on-surface-variant); }.status:before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); }
.question { padding: 16px; background: var(--primary-container); font-size: .875rem; line-height: 1.48; }.question strong { display: block; font-size: .7rem; letter-spacing: .07em; color: var(--tertiary); margin-bottom: 7px; }
.answer { padding: 17px; }.answer h3 { margin: 0 0 10px; font-size: 1.25rem; font-weight: 500; }.answer p { margin: 0 0 13px; color: var(--on-surface-variant); font-size: .875rem; line-height: 1.55; }.move { border-left: 3px solid var(--secondary); padding: 8px 0 8px 11px; font-size: .78rem; line-height: 1.5; }.move b { color: var(--secondary); }
.phone-frame { position: relative; width: min(100%, 330px); margin: 0 auto; padding: 8px; border: 1px solid #111827; border-radius: 42px; background: #252322; box-shadow: 0 12px 24px rgba(11,46,74,.28), 0 2px 5px rgba(11,46,74,.2); }
.phone-speaker { position: absolute; z-index: 2; top: 8px; left: 50%; width: 44px; height: 4px; border-radius: 99px; transform: translateX(-50%); background: var(--dimir-slate); }
.app-preview { position: relative; width: 100%; border-radius: 34px; line-height: 0; overflow: hidden; background: var(--surface); }
.app-preview img { width: 100%; height: auto; display: block; }
.preview-label { position: absolute; z-index: 1; top: 14px; right: 14px; padding: 7px 9px; border-radius: var(--radius-s); background: rgba(255,251,254,.94); color: var(--primary); font-size: .7rem; font-weight: 500; letter-spacing: .04em; line-height: 1.2; text-transform: uppercase; box-shadow: 0 1px 3px rgba(11,46,74,.12); }

.proof { background: var(--surface); border-bottom: 1px solid var(--surface-variant); }.proof-inner { display: grid; grid-template-columns: repeat(3, 1fr); }.proof-item { padding: 24px; border-left: 1px solid var(--surface-variant); }.proof-item:last-child { border-right: 1px solid var(--surface-variant); }.proof-item b { display: block; color: var(--primary); font-size: 1.1rem; font-weight: 500; }.proof-item span { display: block; margin-top: 7px; font-size: .875rem; line-height: 1.45; color: var(--on-surface-variant); }

.section { padding: 80px 0; }.section h2 { font-size: clamp(2rem, 4vw, 3.25rem); max-width: 720px; }.section-intro { max-width: 620px; color: var(--on-surface-variant); line-height: 1.68; }.steps { margin-top: 38px; display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }.step { min-height: 225px; border: 1px solid var(--surface-variant); border-radius: var(--radius-m); padding: 20px; background: var(--surface); }.step-no { color: var(--primary); font-size: .75rem; font-weight: 500; }.step h3 { font-size: 1.25rem; font-weight: 500; margin: 36px 0 12px; }.step p { font-size: .875rem; color: var(--on-surface-variant); line-height: 1.58; margin: 0; }
.split { background: var(--deep-navy); color: var(--white); }.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }.split .eyebrow { color: #9bb8d6; }.split h2 { margin: 0; }.checklist { list-style: none; padding: 0; margin: 28px 0 0; }.checklist li { padding: 14px 0; border-top: 1px solid rgba(255,255,255,.18); color: rgba(255,255,255,.78); font-size: .9rem; }.checklist li:before { content: "✓"; margin-right: 10px; color: #9bb8d6; font-weight: 700; }
.deck-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; }.deck { min-height: 120px; padding: 15px; background: var(--primary-container); color: var(--on-surface); border-radius: var(--radius-m); }.deck:nth-child(2) { margin-top: 20px; background: var(--warning-container); }.deck:nth-child(3) { margin-top: -18px; background: var(--error-container); }.deck:nth-child(4) { margin-top: 2px; background: var(--surface-variant); }.deck small { font-size: .7rem; color: var(--on-surface-variant); }.deck b { display: block; margin-top: 27px; font-size: 1.15rem; font-weight: 500; }

.cta-band { padding: 80px 0; background: var(--warning-container); color: var(--on-surface); text-align: center; }.cta-band h2 { margin: 0 auto 16px; max-width: 760px; font-size: clamp(2.1rem,4.5vw,3.5rem); font-weight: 500; line-height: 1.1; letter-spacing: -.025em; }.cta-band p { max-width: 510px; margin: 0 auto 26px; color: var(--on-surface-variant); }.cta-band .button { background: var(--primary); color: var(--white); }
.footer { padding: 28px 0; background: var(--deep-navy); color: rgba(255,255,255,.68); font-size: .75rem; }.footer-inner { display: flex; justify-content: space-between; gap: 20px; align-items: center; }.footer a { color: var(--white); margin-left: 17px; }

.guide-head { padding: 70px 0 62px; background: var(--primary-container); border-bottom: 1px solid #b9cadc; }.guide-head h1 { max-width: 800px; font-size: clamp(2.5rem, 5vw, 4.2rem); }.guide-head p { max-width: 650px; color: var(--on-surface-variant); line-height: 1.68; }.article { width: min(780px, calc(100% - 40px)); margin: 0 auto; padding: 68px 0 88px; }.article p, .article li { color: var(--on-surface-variant); line-height: 1.76; }.article h2 { margin: 50px 0 14px; font-size: 1.75rem; font-weight: 500; letter-spacing: -.02em; }.article .callout { margin: 32px 0; padding: 20px; border-radius: var(--radius-m); border: 1px solid #e3c6c4; background: var(--error-container); color: var(--on-error-container); }.article .callout b { display: block; margin-bottom: 6px; }.example-table { width: 100%; margin: 24px 0; border-collapse: collapse; font-size: .875rem; }.example-table th, .example-table td { text-align: left; padding: 13px; border-bottom: 1px solid var(--surface-variant); }.example-table th { color: var(--primary); font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; }

:root[data-theme="dark"] .top, :root[data-theme="dark"] .proof, :root[data-theme="dark"] .step, :root[data-theme="dark"] .analysis-card { background: var(--surface); }
:root[data-theme="dark"] .nav-cta, :root[data-theme="dark"] .button-primary { background: var(--primary); color: var(--deep-navy); }
:root[data-theme="dark"] .button-secondary { color: var(--primary); border-color: var(--primary); }
:root[data-theme="dark"] .hero, :root[data-theme="dark"] .guide-head { background: var(--primary-container); border-color: #3f6a8c; }
:root[data-theme="dark"] .hero h1 em, :root[data-theme="dark"] .eyebrow, :root[data-theme="dark"] .tag, :root[data-theme="dark"] .proof-item b, :root[data-theme="dark"] .step-no, :root[data-theme="dark"] .example-table th { color: var(--tertiary); }
:root[data-theme="dark"] .question { background: var(--primary-container); }
:root[data-theme="dark"] .cta-band { background: var(--warning-container); color: #ffe9b0; }
:root[data-theme="dark"] .cta-band p { color: #f5dba4; }
:root[data-theme="dark"] .article .callout { background: var(--error-container); border-color: #8e3834; color: var(--on-error-container); }
:root[data-theme="dark"] .phone-frame { border-color: #0a0c10; box-shadow: 0 12px 24px rgba(0,0,0,.38), 0 2px 5px rgba(0,0,0,.32); }

/* Formulario público de feedback (/feedback.html). Reutiliza los tokens del
   sitio -> claro/oscuro sin reglas extra. */
.feedback-section { padding-top: 56px; padding-bottom: 72px; }
.feedback-title { margin: 12px 0 16px; font-weight: 500; line-height: 1.1; letter-spacing: -.025em; font-size: clamp(2rem, 4vw, 3rem); }
.feedback-intro { max-width: 560px; color: var(--on-surface-variant); line-height: 1.62; }
.feedback-form { max-width: 560px; margin-top: 32px; display: flex; flex-direction: column; gap: 22px; }
.form-field { display: flex; flex-direction: column; gap: 8px; border: 0; padding: 0; margin: 0; }
.form-label { font-size: .95rem; font-weight: 500; color: var(--on-surface); padding: 0; }
.form-help { font-size: .8rem; color: var(--on-surface-variant); }
.form-input, .form-textarea { width: 100%; padding: 12px 14px; font: 400 1rem Roboto, "Segoe UI", sans-serif; color: var(--on-surface); background: var(--surface); border: 1px solid var(--outline); border-radius: var(--radius-m); }
.form-textarea { resize: vertical; min-height: 130px; line-height: 1.5; }
.form-input:focus-visible, .form-textarea:focus-visible { outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary); }
.radio-row { display: flex; flex-wrap: wrap; gap: 10px 20px; }
.radio { display: inline-flex; align-items: center; gap: 8px; font-size: .95rem; color: var(--on-surface); cursor: pointer; }
.radio input { accent-color: var(--primary); width: 18px; height: 18px; }
.form-row-between { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.char-counter { font-size: .8rem; color: var(--on-surface-variant); font-variant-numeric: tabular-nums; }
.feedback-submit { align-self: flex-start; cursor: pointer; border: 0; }
.feedback-submit:disabled { opacity: .6; cursor: default; box-shadow: none; }
.form-consent { font-size: .78rem; color: var(--on-surface-variant); line-height: 1.5; margin: 0; }
.form-consent a { color: var(--primary); }
.form-status { margin: 0; padding: 12px 14px; border-radius: var(--radius-m); font-size: .9rem; }
.form-status-success { background: var(--primary-container); color: var(--on-surface); border: 1px solid var(--primary); }
.form-status-error { background: var(--error-container); color: var(--on-error-container); border: 1px solid var(--secondary); }
/* Honeypot: fuera de pantalla y fuera del árbol de accesibilidad. */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

@media (max-width: 760px) {
  .feedback-form { max-width: 100%; }
  .feedback-submit { align-self: stretch; min-height: 48px; }
  body { overflow-x: hidden; }
  .shell { width: min(100% - 32px, 620px); }
  .nav { height: 60px; gap: 12px; }
  .brand { gap: 8px; font-size: 1.1rem; }
  .app-logo { width: 32px; height: 32px; }
  .nav-actions { gap: 8px; }
  .nav-links { display: none; }
  .theme-toggle { width: 40px; min-width: 40px; padding: 8px; }
  .theme-toggle-label { display: none; }
  .hero { padding: 42px 0 52px; }
  .hero-grid, .split-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero h1 { margin: 12px 0 16px; font-size: clamp(2.45rem, 12vw, 3.35rem); line-height: 1.05; }
  .hero-copy { font-size: 1rem; line-height: 1.58; }
  .hero-actions { display: grid; grid-template-columns: 1fr; margin-top: 24px; gap: 10px; }
  .hero-actions .button { width: 100%; min-height: 48px; }
  .fine-print { text-align: center; }
  .phone-frame { width: min(78vw, 278px); padding: 7px; border-radius: 37px; }
  .app-preview { border-radius: 30px; }
  .phone-speaker { top: 7px; }
  .preview-label { top: 11px; right: 11px; font-size: .62rem; }
  .proof-inner, .steps { grid-template-columns: 1fr; }
  .proof-item, .proof-item:last-child { padding: 20px 0; border: 0; border-bottom: 1px solid var(--surface-variant); }
  .proof-item:last-child { border-bottom: 0; }
  .section { padding: 56px 0; }
  .section h2 { margin: 12px 0 16px; font-size: clamp(1.9rem, 9vw, 2.5rem); }
  .section-intro { font-size: .95rem; }
  .steps { margin-top: 28px; gap: 12px; }
  .step { min-height: 0; padding: 18px; }
  .step h3 { margin-top: 26px; }
  .split { padding: 56px 0; }
  .split-grid { gap: 32px; }
  .checklist { margin-top: 22px; }
  .deck-grid { max-width: 330px; margin: 0 auto; }
  .deck { min-height: 108px; }
  .cta-band { padding: 58px 0; }
  .cta-band h2 { font-size: clamp(2rem, 10vw, 2.65rem); }
  .cta-band .button { width: 100%; min-height: 48px; }
  .guide-head { padding: 42px 0 44px; }
  .guide-head h1 { margin: 12px 0 16px; font-size: clamp(2.35rem, 11vw, 3.2rem); line-height: 1.06; }
  .guide-head p { font-size: 1rem; }
  .article { width: min(100% - 32px, 620px); padding: 48px 0 62px; }
  .article h2 { margin-top: 40px; font-size: 1.55rem; }
  .article .callout { margin: 26px 0; padding: 18px; }
  .example-table { display: block; overflow-x: auto; white-space: nowrap; }
  .footer { padding: 24px 0 30px; }
  .footer-inner { display: block; }
  .footer-links { display: flex; flex-wrap: wrap; gap: 12px 16px; margin-top: 16px; }
  .footer a { margin: 0; }
}

@media (max-width: 380px) {
  .shell, .article { width: min(100% - 24px, 620px); }
  .hero h1 { font-size: 2.35rem; }
  .phone-frame { width: min(82vw, 268px); }
}