/* ============================================================
   Legal English Studio — sober academic / law-firm aesthetic
   Deep ink navy + gold accent · Fraunces display + Inter body
   ============================================================ */

/* ---------- Type scale ---------- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.2vw, 0.9rem);
  --text-base: clamp(0.95rem, 0.92rem + 0.2vw, 1.02rem);
  --text-lg: clamp(1.1rem, 1rem + 0.4vw, 1.3rem);
  --text-xl: clamp(1.4rem, 1.2rem + 0.9vw, 2rem);
  --text-2xl: clamp(1.9rem, 1.4rem + 1.8vw, 2.9rem);

  --space-1: 0.25rem;  --space-2: 0.5rem;  --space-3: 0.75rem;
  --space-4: 1rem;     --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem;     --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem;    --space-20: 5rem;

  --radius-sm: 0.375rem; --radius-md: 0.55rem; --radius-lg: 0.85rem; --radius-xl: 1.2rem;
  --radius-full: 9999px;

  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
  --sidebar-w: 290px;
}

/* ---------- Light theme ---------- */
:root, [data-theme="light"] {
  --brand-ink: #0b1f3a;
  --brand-gold: #b6883f;

  --color-bg: #f4f2ec;
  --color-surface: #fbfaf6;
  --color-surface-2: #ffffff;
  --color-surface-offset: #efece3;
  --color-border: #ddd8cc;
  --color-divider: #e8e4da;

  --color-text: #1b2230;
  --color-text-muted: #5d6678;
  --color-text-faint: #9aa0ad;
  --color-text-inverse: #f6f5f0;

  --color-primary: #0b1f3a;
  --color-primary-soft: #1c3457;
  --color-accent: #9a6f24;
  --color-accent-soft: #b6883f;
  --color-accent-bg: #f3ead7;

  --color-success: #2f6b3a;
  --color-success-bg: #e3efe2;
  --color-error: #9e2f3a;
  --color-error-bg: #f5e2e1;
  --color-warn: #8a5a12;
  --color-warn-bg: #f6ecd4;

  --shadow-sm: 0 1px 2px rgba(20,25,40,.06);
  --shadow-md: 0 6px 22px rgba(20,25,40,.09);
  --shadow-lg: 0 18px 48px rgba(20,25,40,.14);
}

/* ---------- Dark theme ---------- */
[data-theme="dark"] {
  --brand-ink: #0a1426;
  --brand-gold: #cda35b;

  --color-bg: #0c111c;
  --color-surface: #131a28;
  --color-surface-2: #18202f;
  --color-surface-offset: #0f1622;
  --color-border: #28313f;
  --color-divider: #1d2533;

  --color-text: #dfe3ea;
  --color-text-muted: #98a1b2;
  --color-text-faint: #646e7e;
  --color-text-inverse: #0c111c;

  --color-primary: #cda35b;
  --color-primary-soft: #b78f47;
  --color-accent: #d9b878;
  --color-accent-soft: #cda35b;
  --color-accent-bg: #241d12;

  --color-success: #6db374;
  --color-success-bg: #16271a;
  --color-error: #e1828c;
  --color-error-bg: #2a1518;
  --color-warn: #d6ab5b;
  --color-warn-bg: #261f10;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
  --shadow-md: 0 6px 22px rgba(0,0,0,.4);
  --shadow-lg: 0 18px 48px rgba(0,0,0,.55);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) { color-scheme: dark; }
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility; scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}
body {
  min-height: 100dvh; line-height: 1.65;
  font-family: var(--font-body); font-size: var(--text-base);
  color: var(--color-text); background: var(--color-bg);
  font-feature-settings: "ss01", "cv11";
}
img, svg { display: block; max-width: 100%; }
button { cursor: pointer; background: none; border: none; color: inherit; font: inherit; }
input, textarea, select { font: inherit; color: inherit; }
a { color: var(--color-accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
h1,h2,h3,h4 { line-height: 1.18; text-wrap: balance; font-family: var(--font-display); }
p, li { text-wrap: pretty; }
::selection { background: color-mix(in srgb, var(--color-accent) 28%, transparent); }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: var(--radius-sm); }
@media (prefers-reduced-motion: reduce) { *,*::before,*::after { animation-duration:.01ms!important; transition-duration:.01ms!important; } }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--color-primary); color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4); border-radius: 0 0 var(--radius-md) 0;
}
.skip-link:focus { left: 0; }

.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; }

/* ============================================================
   Layout: sidebar + topbar + content
   ============================================================ */
body { display: grid; grid-template-columns: var(--sidebar-w) 1fr; grid-template-rows: auto 1fr; grid-template-areas: "sidebar topbar" "sidebar main"; }

.sidebar {
  grid-area: sidebar; position: sticky; top: 0; height: 100dvh;
  background: var(--brand-ink); color: #e9ecf3;
  display: flex; flex-direction: column;
  border-right: 1px solid color-mix(in srgb, var(--brand-ink) 60%, #000);
  z-index: 60;
}
[data-theme="dark"] .sidebar { background: #070d18; border-right-color: var(--color-border); }

.brand { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-5) var(--space-5) var(--space-4); }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-family: var(--font-display); font-size: 1.18rem; font-weight: 600; letter-spacing: .2px; color: #fff; }
.brand-text small { font-size: .72rem; color: var(--brand-gold); letter-spacing: .14em; text-transform: uppercase; margin-top: 2px; }

.nav { flex: 1; overflow-y: auto; padding: var(--space-2) var(--space-3) var(--space-4); display: flex; flex-direction: column; gap: 1px; scrollbar-width: thin; }
.nav-section-label { font-size: .66rem; letter-spacing: .16em; text-transform: uppercase; color: rgba(233,236,243,.42); padding: var(--space-4) var(--space-3) var(--space-2); }
.nav-item.exam .nav-num { color: var(--brand-gold); }
.exam-page .topic-head .topic-meta .badge { background: var(--color-accent-bg); }

.nav-item {
  display: flex; align-items: center; gap: var(--space-3);
  width: 100%; text-align: left; padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-md); color: rgba(233,236,243,.82);
  font-size: .9rem; transition: background var(--transition), color var(--transition);
  position: relative;
}
.nav-item:hover { background: rgba(255,255,255,.06); color: #fff; }
.nav-item.active { background: rgba(182,136,63,.16); color: #fff; }
.nav-item.active::before { content:""; position:absolute; left:0; top:18%; bottom:18%; width:3px; border-radius: 3px; background: var(--brand-gold); }
.nav-num {
  flex-shrink: 0; width: 26px; height: 26px; display: grid; place-items: center;
  font-family: var(--font-mono); font-size: .72rem; border-radius: var(--radius-sm);
  background: rgba(255,255,255,.07); color: var(--brand-gold);
}
.nav-item.active .nav-num { background: var(--brand-gold); color: var(--brand-ink); }
.nav-item.home .nav-num { background: rgba(255,255,255,.12); color:#fff; }
.nav-label { flex: 1; line-height: 1.25; }
.nav-check { flex-shrink: 0; opacity: 0; color: var(--color-success); }
[data-theme="dark"] .nav-check { color: #6db374; }
.nav-item.done .nav-check { opacity: 1; }
.nav-item.done .nav-label { color: rgba(233,236,243,.6); }

.sidebar-foot { padding: var(--space-3) var(--space-4) var(--space-5); border-top: 1px solid rgba(255,255,255,.08); }
.reset-btn { font-size: .76rem; color: rgba(233,236,243,.55); padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm); width: 100%; transition: var(--transition); }
.reset-btn:hover { color: #fff; background: rgba(255,255,255,.06); }

.sidebar-scrim { position: fixed; inset: 0; background: rgba(8,12,22,.5); z-index: 55; }

/* Topbar */
.topbar {
  grid-area: topbar; position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) clamp(var(--space-4), 3vw, var(--space-10));
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--color-divider);
}
.topbar-title { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; flex: 1; }
.topbar-actions { display: flex; gap: var(--space-2); }
.menu-btn { display: none; }
.icon-btn { display: grid; place-items: center; width: 40px; height: 40px; border-radius: var(--radius-md); color: var(--color-text-muted); transition: var(--transition); }
.icon-btn:hover { background: var(--color-surface-offset); color: var(--color-text); }

.content { grid-area: main; padding: clamp(var(--space-5), 3vw, var(--space-12)) clamp(var(--space-4), 4vw, var(--space-20)); max-width: 1080px; width: 100%; }

/* ============================================================
   Reusable bits
   ============================================================ */
.eyebrow { font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--color-accent); font-weight: 600; }
.muted { color: var(--color-text-muted); }
.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.es-note { font-size: .86rem; color: var(--color-text-muted); }

.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-md);
  font-size: .88rem; font-weight: 500; transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary { background: var(--color-primary); color: var(--color-text-inverse); }
.btn-primary:hover { background: var(--color-primary-soft); }
.btn-ghost { border-color: var(--color-border); color: var(--color-text); background: var(--color-surface); }
.btn-ghost:hover { border-color: var(--color-accent); }
.btn-accent { background: var(--color-accent); color: #fff; }
[data-theme="dark"] .btn-accent { color: var(--brand-ink); }
.btn-accent:hover { filter: brightness(1.06); }

.badge { display: inline-flex; align-items: center; gap: 6px; font-size: .72rem; font-weight: 600; padding: 3px 10px; border-radius: var(--radius-full); background: var(--color-accent-bg); color: var(--color-accent); }

/* ============================================================
   Dashboard
   ============================================================ */
.hero { margin-bottom: var(--space-10); }
.hero h1 { font-size: var(--text-2xl); font-weight: 600; margin: var(--space-3) 0; letter-spacing: -.5px; }
.hero p.lede { font-size: var(--text-lg); color: var(--color-text-muted); max-width: 60ch; font-family: var(--font-body); }

/* Tarjeta "Continúa donde lo dejaste" en la portada */
.resume-card { display: flex; align-items: center; gap: var(--space-4); padding: var(--space-4) var(--space-5); margin: 0 0 var(--space-8); border: 1px solid var(--color-border); border-left: 4px solid var(--color-primary); border-radius: var(--radius-lg); background: var(--color-surface-2); }
[data-theme="dark"] .resume-card { border-left-color: var(--color-accent); }
.resume-ico { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; flex: none; border-radius: 50%; background: var(--color-surface-offset); color: var(--color-primary); }
[data-theme="dark"] .resume-ico { color: var(--color-accent); }
.resume-body { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.resume-kicker { font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; color: var(--color-text-muted); }
.resume-label { font-family: var(--font-display); font-weight: 600; color: var(--color-text); }
.resume-btn { flex: none; }
@media (max-width: 560px) { .resume-card { flex-wrap: wrap; } .resume-btn { width: 100%; } }

.progress-overview { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px,1fr)); gap: var(--space-4); margin: var(--space-8) 0; }
.stat { padding: var(--space-5); }
.stat .num { font-family: var(--font-display); font-size: 2rem; font-weight: 600; color: var(--color-primary); line-height: 1; }
[data-theme="dark"] .stat .num { color: var(--color-accent); }
.stat .lbl { font-size: .8rem; color: var(--color-text-muted); margin-top: var(--space-2); }

.progressbar { height: 8px; background: var(--color-surface-offset); border-radius: var(--radius-full); overflow: hidden; }
.progressbar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--color-accent-soft), var(--color-accent)); border-radius: var(--radius-full); transition: width .6s cubic-bezier(.16,1,.3,1); }
.progressbar.ink > span { background: var(--color-primary); }

.section-title { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600; margin: var(--space-12) 0 var(--space-2); }
.section-sub { color: var(--color-text-muted); margin-bottom: var(--space-6); font-size: .92rem; }

.week-grid { display: grid; gap: var(--space-5); }
.week {
  display: grid; grid-template-columns: 64px 1fr; gap: var(--space-5);
  padding: var(--space-5); align-items: start;
}
.week-num { font-family: var(--font-display); font-size: 1.6rem; font-weight: 600; color: var(--color-accent); text-align: center; padding-top: 2px; }
.week-num small { display:block; font-family: var(--font-body); font-size:.62rem; letter-spacing:.14em; text-transform:uppercase; color: var(--color-text-faint); }
.week-topics { display: grid; gap: var(--space-3); }
.topic-chip {
  display: flex; align-items: center; gap: var(--space-3); width: 100%; text-align: left;
  padding: var(--space-3) var(--space-4); border-radius: var(--radius-md);
  border: 1px solid var(--color-border); background: var(--color-surface-2);
  transition: var(--transition);
}
.topic-chip:hover { border-color: var(--color-accent); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.topic-chip .tc-num { font-family: var(--font-mono); font-size: .74rem; color: var(--color-accent); width: 28px; }
.topic-chip .tc-body { flex: 1; display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.topic-chip .tc-title { display: block; font-weight: 600; font-size: .94rem; }
.topic-chip .tc-sub { display: block; font-size: .76rem; color: var(--color-text-muted); }
.topic-chip .tc-prog { font-size: .72rem; color: var(--color-text-faint); font-family: var(--font-mono); }
.topic-chip.done { border-color: color-mix(in srgb, var(--color-success) 45%, var(--color-border)); }
.topic-chip .tc-check { color: var(--color-success); opacity: 0; }
.topic-chip.done .tc-check { opacity: 1; }

.dash-tools { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: var(--space-4); margin-top: var(--space-6); }
.tool-card { padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-2); text-align: left; transition: var(--transition); }
.tool-card:hover { border-color: var(--color-accent); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.tool-card .ti { width: 38px; height: 38px; border-radius: var(--radius-md); display: grid; place-items: center; background: var(--color-accent-bg); color: var(--color-accent); margin-bottom: var(--space-2); }
.tool-card h3 { font-family: var(--font-body); font-size: 1rem; font-weight: 600; }
.tool-card p { font-size: .82rem; color: var(--color-text-muted); }

.source-note { margin-top: var(--space-12); padding: var(--space-5); border-radius: var(--radius-lg); background: var(--color-surface-offset); border: 1px dashed var(--color-border); font-size: .84rem; color: var(--color-text-muted); }
.source-note strong { color: var(--color-text); }

/* ============================================================
   Topic page
   ============================================================ */
.topic-head { margin-bottom: var(--space-6); }
.topic-head .crumb { font-size: .78rem; color: var(--color-text-muted); margin-bottom: var(--space-3); }
.topic-head h1 { font-size: var(--text-2xl); font-weight: 600; letter-spacing: -.5px; }
.topic-head .sub { color: var(--color-text-muted); font-size: var(--text-lg); margin-top: 2px; font-family: var(--font-body); }
.topic-meta { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-4); align-items: center; }

.phase-tabs { display: flex; gap: var(--space-1); background: var(--color-surface-offset); padding: 4px; border-radius: var(--radius-md); margin: var(--space-8) 0 var(--space-6); width: fit-content; }
.phase-tab { padding: var(--space-2) var(--space-6); border-radius: var(--radius-sm); font-size: .8rem; font-weight: 600; letter-spacing: .06em; color: var(--color-text-muted); transition: var(--transition); }
.phase-tab.active { background: var(--color-surface-2); color: var(--color-text); box-shadow: var(--shadow-sm); }

.block { margin-bottom: var(--space-10); }
.block-title { display: flex; align-items: center; gap: var(--space-3); font-family: var(--font-display); font-size: var(--text-lg); font-weight: 600; margin-bottom: var(--space-2); }
.block-title .bi { width: 32px; height: 32px; border-radius: var(--radius-sm); display: grid; place-items: center; background: var(--color-accent-bg); color: var(--color-accent); }
.block-sub { color: var(--color-text-muted); font-size: .86rem; margin-bottom: var(--space-5); }

.prose { max-width: 70ch; }
.prose p { margin-bottom: var(--space-4); }
.prose h4 { font-family: var(--font-display); font-size: 1.12rem; margin: var(--space-6) 0 var(--space-2); color: var(--color-primary); }
[data-theme="dark"] .prose h4 { color: var(--color-accent); }
.prose ul, .prose ol { margin: 0 0 var(--space-4) var(--space-5); display: grid; gap: var(--space-2); }
.prose strong { color: var(--color-text); font-weight: 600; }
.prose .term { font-weight: 600; color: var(--color-primary); }
[data-theme="dark"] .prose .term { color: var(--color-accent); }

/* ============================================================
   Subrayado de la teoría
   ============================================================ */
.hl-help { display: flex; align-items: center; gap: 8px; font-size: .8rem; color: var(--color-text-muted); background: var(--color-surface-offset); border: 1px dashed var(--color-border); border-radius: var(--radius-md); padding: 8px 12px; margin-bottom: var(--space-5); }
.hl-help-ico { display: inline-flex; color: var(--color-accent); }
/* Texto subrayado por el usuario */
mark.le-hl { background: color-mix(in srgb, #ffd54a 55%, transparent); color: inherit; border-radius: 3px; padding: 0 1px; cursor: pointer; box-decoration-break: clone; -webkit-box-decoration-break: clone; transition: background .15s; }
mark.le-hl:hover { background: color-mix(in srgb, #ff8a65 60%, transparent); }
[data-theme="dark"] mark.le-hl { background: color-mix(in srgb, #d4a017 50%, transparent); }
[data-theme="dark"] mark.le-hl:hover { background: color-mix(in srgb, #e07a3a 55%, transparent); }
mark.le-hl .term { color: inherit; }
/* Botón flotante "Subrayar" */
.hl-toolbar { position: absolute; z-index: 1200; display: none; align-items: center; gap: 6px; padding: 7px 12px; font-size: .8rem; font-weight: 600; color: #fff; background: var(--color-primary); border: none; border-radius: var(--radius-md); box-shadow: var(--shadow-lg); cursor: pointer; }
.hl-toolbar:hover { filter: brightness(1.08); }
[data-theme="dark"] .hl-toolbar { background: var(--color-accent); color: var(--color-bg, #0e2647); }
.hl-toolbar svg { display: block; }

/* Key terms */
.terms-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: var(--space-4); }
.term-card { padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-2); }
.term-card .t-en { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; color: var(--color-primary); }
[data-theme="dark"] .term-card .t-en { color: var(--color-accent); }
.term-card .t-def { font-size: .9rem; }
.term-card .t-es { font-size: .84rem; color: var(--color-text-muted); border-top: 1px solid var(--color-divider); padding-top: var(--space-2); }
.term-card .t-es b { color: var(--color-accent); font-weight: 600; }
.term-card .t-src { font-size: .7rem; color: var(--color-text-faint); font-family: var(--font-mono); margin-top: auto; }
.term-card .t-note { font-size: .8rem; color: var(--color-text-muted); font-style: italic; }

/* Collocations */
.colloc-list { display: grid; gap: var(--space-3); }
.colloc {
  display: grid; grid-template-columns: minmax(150px, 220px) 1fr; gap: var(--space-4);
  padding: var(--space-4) var(--space-5); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); background: var(--color-surface);
}
.colloc .c-pat { font-weight: 600; color: var(--color-primary); font-size: .94rem; }
[data-theme="dark"] .colloc .c-pat { color: var(--color-accent); }
.colloc .c-mean { font-size: .82rem; color: var(--color-text-muted); }
.colloc .c-ex { font-size: .88rem; font-style: italic; }
.colloc .c-ex::before { content: "“"; } .colloc .c-ex::after { content: "”"; }
.colloc .c-src { font-size: .68rem; color: var(--color-text-faint); font-family: var(--font-mono); margin-top: 4px; }

/* Text analysis */
.ta-model { margin-top: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; }
.ta-model .ta-head { background: var(--color-surface-offset); padding: var(--space-3) var(--space-5); font-size: .8rem; font-weight: 600; color: var(--color-text-muted); letter-spacing: .04em; }
.ta-model .ta-body { padding: var(--space-5); background: var(--color-surface-2); font-family: var(--font-body); }
.ta-model .ta-body p { margin-bottom: var(--space-3); }
.ta-notes { margin-top: var(--space-4); display: grid; gap: var(--space-2); }
.ta-notes li { font-size: .84rem; color: var(--color-text-muted); padding-left: var(--space-5); position: relative; }
.ta-notes li::before { content: "▸"; position: absolute; left: 0; color: var(--color-accent); }

/* ============================================================
   Exercises
   ============================================================ */
.exercise { padding: var(--space-6); margin-bottom: var(--space-6); }
.ex-head { display: flex; align-items: flex-start; gap: var(--space-3); margin-bottom: var(--space-4); }
.ex-type { flex-shrink: 0; font-size: .68rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; padding: 4px 9px; border-radius: var(--radius-sm); background: var(--color-primary); color: var(--color-text-inverse); }
.ex-title { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; }
.ex-instr { font-size: .84rem; color: var(--color-text-muted); margin-bottom: var(--space-4); }

/* Grouped closed-type box: one box holds several same-type exercises */
.ex-group-head { display: flex; align-items: baseline; gap: var(--space-3); margin-bottom: var(--space-5); padding-bottom: var(--space-3); border-bottom: 2px solid var(--color-divider); }
.ex-group-head .ex-type { font-size: .74rem; }
.ex-group-count { font-size: .8rem; color: var(--color-text-muted); font-weight: 500; }
.ex-block { padding: 0; }
.ex-block.ex-block-sep { margin-top: var(--space-6); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); }
.ex-group .ex-block .ex-title { font-size: 1.02rem; }
.ex-group .ex-block .ex-head { margin-bottom: var(--space-3); }
.ex-passage { background: var(--color-surface-offset); border-left: 3px solid var(--color-accent); padding: var(--space-4) var(--space-5); border-radius: var(--radius-sm); margin-bottom: var(--space-4); font-size: .92rem; }

.q { padding: var(--space-4) 0; border-top: 1px solid var(--color-divider); }
.q:first-child { border-top: none; }
.q-stem { margin-bottom: var(--space-3); font-size: .95rem; }
.q-stem .blank { display: inline-block; min-width: 80px; border-bottom: 2px solid var(--color-accent); }

.opts { display: grid; gap: var(--space-2); }
.opt {
  display: flex; align-items: center; gap: var(--space-3); padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-2);
  font-size: .9rem; transition: var(--transition); text-align: left; width: 100%;
}
.opt:hover:not([disabled]) { border-color: var(--color-accent); }
.opt .opt-key { font-family: var(--font-mono); font-size: .76rem; color: var(--color-text-faint); width: 18px; flex-shrink: 0; }
.opt.selected { border-color: var(--color-primary); }
.opt.correct { border-color: var(--color-success); background: var(--color-success-bg); }
.opt.incorrect { border-color: var(--color-error); background: var(--color-error-bg); }
.opt.correct .opt-key { color: var(--color-success); }
.opt.incorrect .opt-key { color: var(--color-error); }

.gap-input, .text-input {
  border: 1px solid var(--color-border); background: var(--color-surface-2);
  border-radius: var(--radius-sm); padding: 6px 10px; font-size: .9rem; min-width: 140px;
  transition: var(--transition);
}
.gap-input:focus { border-color: var(--color-accent); outline: none; }
.gap-input.correct { border-color: var(--color-success); background: var(--color-success-bg); }
.gap-input.incorrect { border-color: var(--color-error); background: var(--color-error-bg); }
.gap-line { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin-bottom: var(--space-2); font-size: .94rem; }

/* matching */
.match-row { display: grid; grid-template-columns: 1fr 1.4fr; gap: var(--space-3); align-items: center; padding: var(--space-2) 0; }
.match-term { font-weight: 600; font-size: .92rem; color: var(--color-primary); }
[data-theme="dark"] .match-term { color: var(--color-accent); }
.match-select { width: 100%; padding: 8px 10px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface-2); font-size: .86rem; }
.match-select.correct { border-color: var(--color-success); background: var(--color-success-bg); }
.match-select.incorrect { border-color: var(--color-error); background: var(--color-error-bg); }

/* true/false */
.tf-row { display: flex; align-items: center; gap: var(--space-4); padding: var(--space-3) 0; border-top: 1px solid var(--color-divider); }
.tf-row:first-child { border-top: none; }
.tf-statement { flex: 1; font-size: .92rem; }
.tf-buttons { display: flex; gap: var(--space-2); flex-shrink: 0; }
.tf-btn { padding: 5px 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: .8rem; font-weight: 600; }
.tf-btn.selected { background: var(--color-primary); color: var(--color-text-inverse); border-color: var(--color-primary); }
.tf-btn.correct { background: var(--color-success-bg); border-color: var(--color-success); color: var(--color-success); }
.tf-btn.incorrect { background: var(--color-error-bg); border-color: var(--color-error); color: var(--color-error); }

/* rewrite / writing */
.rw-original { background: var(--color-surface-offset); padding: var(--space-4) var(--space-5); border-radius: var(--radius-sm); font-size: .92rem; margin-bottom: var(--space-4); border-left: 3px solid var(--color-text-faint); }
.rw-original .legalese { font-family: var(--font-mono); font-size: .86rem; }
.write-area { width: 100%; min-height: 130px; resize: vertical; border: 1px solid var(--color-border); background: var(--color-surface-2); border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); font-size: .92rem; line-height: 1.6; }
.checklist { display: grid; gap: var(--space-2); margin: var(--space-4) 0; }
.checklist li { font-size: .84rem; color: var(--color-text-muted); display: flex; gap: var(--space-2); align-items: flex-start; }
.checklist li::before { content: "☐"; color: var(--color-accent); }

/* exercise footer / solution */
.ex-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-5); align-items: center; }
.ex-feedback { font-size: .85rem; font-weight: 600; }
.ex-feedback.ok { color: var(--color-success); }
.ex-feedback.ko { color: var(--color-error); }
.solution {
  margin-top: var(--space-5); padding: var(--space-5);
  border-radius: var(--radius-md); background: var(--color-accent-bg);
  border: 1px solid color-mix(in srgb, var(--color-accent) 30%, transparent);
}
.solution h5 { font-family: var(--font-body); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--color-accent); margin-bottom: var(--space-3); }
.solution .sol-answer { font-weight: 600; margin-bottom: var(--space-3); padding: var(--space-2) var(--space-3); background: var(--color-success-bg); border-radius: var(--radius-sm); display: inline-block; color: var(--color-success); }
.solution .why { font-size: .9rem; }
.solution .why p { margin-bottom: var(--space-2); }
.solution .model-text { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: var(--space-4); margin-top: var(--space-3); font-size: .9rem; line-height: 1.7; white-space: pre-wrap; }
.sol-src { font-size: .7rem; color: var(--color-text-faint); font-family: var(--font-mono); margin-top: var(--space-3); }

/* rubric box */
.rubric-box { margin-top: var(--space-5); }
.rubric {
  padding: var(--space-5); border-radius: var(--radius-md);
  background: var(--color-surface-2); border: 1px solid var(--color-border);
}
.rb-head { display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-4); flex-wrap: wrap; }
.rb-score { font-family: var(--font-display); font-size: 2rem; line-height: 1; color: var(--color-accent); font-weight: 600; }
.rb-score .rb-max { font-size: 1rem; color: var(--color-text-faint); }
.rb-note { font-size: .74rem; color: var(--color-text-muted); max-width: 320px; }
.rb-list { display: grid; gap: var(--space-3); }
.rb-row { display: flex; gap: var(--space-3); align-items: flex-start; font-size: .86rem; line-height: 1.55; }
.rb-ic { flex: 0 0 auto; width: 20px; height: 20px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: .8rem; font-weight: 700; }
.rb-ic.ok { background: var(--color-success-bg); color: var(--color-success); }
.rb-ic.ko { background: var(--color-warn-bg); color: var(--color-warn); }
.rb-txt { color: var(--color-text); }

.pending-note { padding: var(--space-4) var(--space-5); border-radius: var(--radius-md); background: var(--color-warn-bg); border: 1px solid color-mix(in srgb, var(--color-warn) 35%, transparent); color: var(--color-warn); font-size: .86rem; display: flex; gap: var(--space-3); align-items: flex-start; }

.topic-nav-foot { display: flex; justify-content: space-between; gap: var(--space-4); margin-top: var(--space-12); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); }
.complete-banner { display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; padding: var(--space-5); margin-top: var(--space-8); border-radius: var(--radius-lg); background: var(--color-success-bg); border: 1px solid color-mix(in srgb, var(--color-success) 30%, transparent); }
.complete-banner .cb-text { flex: 1; }
.complete-banner strong { color: var(--color-success); }

/* ============================================================
   Flashcards
   ============================================================ */
.flash-stage { max-width: 600px; margin: var(--space-8) auto; perspective: 1400px; }
.flashcard { aspect-ratio: 3/2; cursor: default; }
.flash-inner { position: relative; width: 100%; height: 100%; transition: transform .55s cubic-bezier(.2,.8,.2,1); transform-style: preserve-3d; }
.flashcard.flipped .flash-inner { transform: rotateY(180deg); }
.flash-face { position: absolute; inset: 0; backface-visibility: hidden; border-radius: var(--radius-xl); display: flex; flex-direction: column; align-items: center; justify-content: center; padding: var(--space-8); text-align: center; box-shadow: var(--shadow-md); border: 1px solid var(--color-border); user-select: text; }
/* Esquina inferior derecha: único punto que voltea la tarjeta. */
.flash-corner { position: absolute; right: 14px; bottom: 14px; width: 42px; height: 42px; display: flex; align-items: center; justify-content: center; border-radius: 12px 4px 12px 4px; border: 1.5px solid color-mix(in srgb, currentColor 45%, transparent); background: color-mix(in srgb, currentColor 12%, transparent); color: inherit; cursor: pointer; transition: background .2s, transform .2s; }
/* La cara trasera está rotada 180º: su esquina se coloca a la izquierda para que,
   tras el giro, quede visualmente abajo-derecha igual que en la cara frontal. */
.flash-back .flash-corner { right: auto; left: 14px; }
.flash-corner:hover { background: color-mix(in srgb, currentColor 24%, transparent); transform: scale(1.06); }
.flash-corner:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.flash-corner svg { opacity: .9; }
.flash-front { background: var(--color-primary); color: var(--color-text-inverse); }
[data-theme="dark"] .flash-front { background: var(--color-surface-2); color: var(--color-text); border-color: var(--color-accent); }
.flash-front .fc-term { font-family: var(--font-display); font-size: 1.9rem; font-weight: 600; }
.flash-front .fc-hint { font-size: .78rem; opacity: .65; margin-top: var(--space-4); letter-spacing: .04em; }
.flash-back { background: var(--color-surface-2); transform: rotateY(180deg); }
.flash-back .fc-def { font-size: 1rem; margin-bottom: var(--space-3); }
.flash-back .fc-es { font-size: .9rem; color: var(--color-accent); font-weight: 500; }
.flash-back .fc-src { font-size: .7rem; color: var(--color-text-faint); margin-top: var(--space-4); font-family: var(--font-mono); }

.flash-progress { text-align: center; font-size: .8rem; color: var(--color-text-muted); margin-top: var(--space-5); }

/* Setup: scope selector + actions on separate rows so nothing overlaps */
.flash-setup { max-width: 640px; margin: var(--space-8) auto; }
.flash-controls-row { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: center; gap: var(--space-5); }
.flash-scope-field { display: flex; flex-direction: column; gap: 6px; text-align: left; min-width: 240px; }
.flash-scope-field label { font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; color: var(--color-text-muted); }
.flash-scope-field select { padding: 10px 14px; border-radius: var(--radius-md); border: 1px solid var(--color-border); background: var(--color-surface-2); color: var(--color-text); font-size: .95rem; min-width: 240px; }
.flash-actions { display: flex; gap: var(--space-3); }

/* Filtro del examen final por tema (estilo flashcards) */
.exam-filter { display: flex; flex-direction: column; gap: 6px; max-width: 360px; margin: var(--space-5) 0 var(--space-6); }
.exam-filter-label { font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; color: var(--color-text-muted); }
.exam-filter select { padding: 10px 14px; border-radius: var(--radius-md); border: 1px solid var(--color-border); background: var(--color-surface-2); color: var(--color-text); font-size: .95rem; }

/* Three piles: total / learned / pending */
.flash-piles { display: flex; gap: var(--space-4); justify-content: center; flex-wrap: wrap; margin-top: var(--space-6); }
.flash-piles .pile { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: var(--space-4) var(--space-5); border-radius: var(--radius-lg); border: 1px solid var(--color-border); background: var(--color-surface-2); min-width: 140px; }
.flash-piles .pile-num { font-family: var(--font-display); font-size: 1.7rem; font-weight: 600; line-height: 1; }
.flash-piles .pile-label { font-size: .68rem; letter-spacing: .06em; text-transform: uppercase; color: var(--color-text-muted); text-align: center; }
.flash-piles .pile-learned { border-color: color-mix(in srgb, var(--color-accent) 50%, var(--color-border)); }
.flash-piles .pile-learned .pile-num { color: var(--color-accent); }
.flash-piles .pile-pending { border-color: color-mix(in srgb, var(--color-primary) 35%, var(--color-border)); }

/* Per-card actions: Voltear / No la sé / La sé */
.flash-actions-card { display: flex; justify-content: center; gap: var(--space-3); margin-top: var(--space-6); flex-wrap: wrap; }
.flash-actions-card .flash-no { border-color: color-mix(in srgb, #b54a4a 45%, var(--color-border)); color: #b54a4a; }
[data-theme="dark"] .flash-actions-card .flash-no { color: #e08a8a; border-color: color-mix(in srgb, #e08a8a 40%, var(--color-border)); }

/* ============================================================
   Search overlay
   ============================================================ */
.search-overlay { position: fixed; inset: 0; z-index: 120; background: rgba(8,12,22,.45); backdrop-filter: blur(4px); display: flex; align-items: flex-start; justify-content: center; padding: clamp(var(--space-8), 12vh, 160px) var(--space-4) var(--space-4); }
.search-overlay[hidden] { display: none; }
[hidden] { display: none !important; }
.search-panel { width: 100%; max-width: 680px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); overflow: hidden; max-height: 75vh; display: flex; flex-direction: column; }
.search-input-row { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-divider); color: var(--color-text-muted); }
.search-input-row input { flex: 1; border: none; background: none; font-size: 1.05rem; outline: none; }
.search-results { overflow-y: auto; padding: var(--space-2); }
.search-result { display: block; width: 100%; text-align: left; padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); transition: var(--transition); }
.search-result:hover, .search-result.active { background: var(--color-surface-offset); }
.search-result .sr-term { font-weight: 600; color: var(--color-primary); }
[data-theme="dark"] .search-result .sr-term { color: var(--color-accent); }
.search-result .sr-def { font-size: .82rem; color: var(--color-text-muted); margin-top: 2px; }
.search-result .sr-topic { font-size: .68rem; color: var(--color-accent); font-family: var(--font-mono); margin-top: 2px; }
.search-empty { padding: var(--space-8); text-align: center; color: var(--color-text-muted); font-size: .9rem; }
mark { background: color-mix(in srgb, var(--color-accent) 35%, transparent); color: inherit; border-radius: 3px; padding: 0 2px; }

/* ============================================================
   Avance del programa (temas completados)
   ============================================================ */
.avance-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: var(--space-2); margin-bottom: var(--space-3); }
.avance-meta { font-size: .82rem; color: var(--color-text-muted); }
.avance-done-label { font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--color-text-muted); margin: var(--space-4) 0 var(--space-2); }
.done-topics { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.done-chip { display: inline-flex; align-items: center; gap: var(--space-2); padding: 6px 12px 6px 8px; border: 1px solid color-mix(in srgb, var(--color-success) 40%, var(--color-border)); background: var(--color-success-bg); border-radius: var(--radius-full); font-size: .82rem; color: var(--color-text); transition: var(--transition); }
.done-chip:hover { border-color: var(--color-success); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.done-chip .dc-check { display: grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; background: var(--color-success); color: #fff; font-size: .68rem; font-weight: 700; flex-shrink: 0; }
.done-chip .dc-num { font-family: var(--font-mono); font-size: .72rem; color: var(--color-success); font-weight: 600; }
.done-chip .dc-title { font-weight: 500; }
.done-empty { font-size: .86rem; color: var(--color-text-muted); margin: 0; }

/* ============================================================
   Confirm dialog
   ============================================================ */
.confirm-overlay { position: fixed; inset: 0; z-index: 140; background: rgba(8,12,22,.5); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; padding: var(--space-4); }
.confirm-panel { width: 100%; max-width: 440px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); padding: var(--space-6) var(--space-6) var(--space-5); text-align: center; }
.confirm-icon { display: grid; place-items: center; width: 52px; height: 52px; margin: 0 auto var(--space-4); border-radius: 50%; background: var(--color-error-bg); color: var(--color-error); }
.confirm-title { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; margin: 0 0 var(--space-2); }
.confirm-text { font-size: .9rem; color: var(--color-text-muted); line-height: 1.5; margin: 0 0 var(--space-5); }
.confirm-actions { display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; }
.confirm-actions .btn { min-width: 140px; justify-content: center; }
.btn-danger { background: var(--color-error); border-color: var(--color-error); color: #fff; }
.btn-danger:hover { background: color-mix(in srgb, var(--color-error) 85%, #000); border-color: color-mix(in srgb, var(--color-error) 85%, #000); }
[data-theme="dark"] .btn-danger { color: #1a0e10; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 920px) {
  body { grid-template-columns: 1fr; grid-template-areas: "topbar" "main"; }
  .sidebar { position: fixed; left: 0; top: 0; width: min(86vw, 320px); transform: translateX(-100%); transition: transform var(--transition); }
  body.nav-open .sidebar { transform: translateX(0); }
  .menu-btn { display: grid; }
  .week { grid-template-columns: 48px 1fr; gap: var(--space-3); }
}
@media (min-width: 921px) { .sidebar-scrim { display: none !important; } }
@media (max-width: 540px) {
  .colloc { grid-template-columns: 1fr; gap: var(--space-1); }
  .match-row { grid-template-columns: 1fr; gap: var(--space-1); }
  .phase-tabs { width: 100%; }
  .phase-tab { flex: 1; text-align: center; }
}

/* ============================================================
   Auth overlay + account row (cloud sync)
   ============================================================ */
#auth-overlay {
  position: fixed; inset: 0; z-index: 1000;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: var(--space-5);
  background: radial-gradient(120% 120% at 50% 0%, var(--brand-ink, #0b1f3a) 0%, #07152a 100%);
  animation: authIn .25s ease;
}
#auth-overlay.auth-done { opacity: 0; transition: opacity .18s ease; }
@keyframes authIn { from { opacity: 0; } to { opacity: 1; } }
.auth-card {
  width: 100%; max-width: 400px;
  background: var(--color-surface, #fff);
  border-radius: 18px; padding: var(--space-7, 2rem);
  box-shadow: 0 24px 60px rgba(0,0,0,.35);
}
.auth-brand { display: flex; align-items: center; gap: 12px; margin-bottom: var(--space-6, 1.5rem); }
.auth-mark {
  width: 44px; height: 44px; flex: none; border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.auth-mark svg { width: 100%; height: 100%; display: block; }
.auth-title { font-family: var(--font-display, Georgia, serif); font-size: 1.15rem; font-weight: 600; color: var(--color-text); }
.auth-sub { font-size: .78rem; color: var(--color-text-muted); }
.auth-tabs { display: flex; gap: 4px; background: var(--color-surface-2, #f0f0f0); border-radius: 10px; padding: 4px; margin-bottom: var(--space-5, 1.25rem); }
.auth-tab {
  flex: 1; border: 0; background: transparent; cursor: pointer;
  padding: 9px 8px; border-radius: 7px; font-size: .85rem; font-weight: 500;
  color: var(--color-text-muted);
}
.auth-tab.is-active { background: var(--color-surface, #fff); color: var(--color-text); box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.auth-form { display: flex; flex-direction: column; }
.auth-label { font-size: .72rem; letter-spacing: .05em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: 5px; margin-top: var(--space-3, .75rem); }
.auth-input {
  padding: 11px 13px; border-radius: 10px; border: 1px solid var(--color-border);
  background: var(--color-surface-2, #fafafa); color: var(--color-text); font-size: .95rem;
}
.auth-input:focus { outline: 2px solid var(--brand-gold, #c8a45c); outline-offset: 1px; border-color: transparent; }
.auth-hint { font-size: .72rem; color: var(--color-text-muted); margin: 8px 0 0; min-height: 1em; }
.auth-error { font-size: .82rem; color: #c0392b; background: #fbe9e7; border-radius: 8px; padding: 8px 10px; margin: 10px 0 0; }
.auth-submit {
  margin-top: var(--space-5, 1.25rem); padding: 12px; border: 0; border-radius: 10px; cursor: pointer;
  background: var(--brand-ink, #0b1f3a); color: #fff; font-size: .95rem; font-weight: 600;
}
.auth-submit:hover { filter: brightness(1.12); }
.auth-submit:disabled { opacity: .65; cursor: default; }

/* --- Separador "o" entre login con cuenta y acceso de invitado --- */
.auth-divider { display: flex; align-items: center; gap: 10px; margin: var(--space-5, 1.25rem) 0 var(--space-3, .75rem); }
.auth-divider::before, .auth-divider::after { content: ""; flex: 1; height: 1px; background: var(--color-border); }
.auth-divider span { font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--color-text-muted); }

/* --- Botón secundario (ghost): entrar como invitado --- */
.auth-guest {
  width: 100%; padding: 12px; border-radius: 10px; cursor: pointer;
  border: 1px solid var(--brand-gold, #c8a45c);
  background: transparent; color: var(--brand-ink, #0b1f3a);
  font-size: .92rem; font-weight: 600;
  transition: background .15s ease, color .15s ease;
}
.auth-guest:hover { background: var(--brand-gold, #c8a45c); color: #0b1f3a; }
.auth-guest:focus-visible { outline: 2px solid var(--brand-gold, #c8a45c); outline-offset: 2px; }

.auth-foot { font-size: .72rem; color: var(--color-text-muted); text-align: center; margin: var(--space-5, 1.25rem) 0 0; line-height: 1.5; }

/* --- Modal: modo invitado deshabilitado temporalmente --- */
.guest-modal-back {
  position: fixed; inset: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  background: rgba(11, 31, 58, .55); padding: 1.25rem;
}
.guest-modal {
  width: 100%; max-width: 420px; background: var(--brand-cream, #e9ddc2);
  border: 1px solid var(--brand-gold, #c8a45c); border-radius: 14px;
  padding: 1.5rem 1.5rem 1.35rem; box-shadow: 0 18px 50px rgba(11, 31, 58, .35);
}
.guest-modal-title { margin: 0 0 .6rem; font-size: 1.1rem; font-weight: 700; color: var(--brand-ink, #0b1f3a); }
.guest-modal-text { margin: 0 0 1.15rem; font-size: .9rem; line-height: 1.55; color: var(--brand-ink, #0b1f3a); }
.guest-modal-text a { color: var(--brand-red, #b23a48); font-weight: 600; text-decoration: underline; }
.guest-modal-ok {
  width: 100%; padding: 11px; border: 0; border-radius: 10px; cursor: pointer;
  background: var(--brand-ink, #0b1f3a); color: #fff; font-size: .92rem; font-weight: 600;
  transition: filter .15s ease;
}
.guest-modal-ok:hover { filter: brightness(1.15); }
.guest-modal-ok:focus-visible { outline: 2px solid var(--brand-gold, #c8a45c); outline-offset: 2px; }

/* --- Modal de clave de acceso (modo invitado): espaciado entre campo y botón --- */
.guest-key-input { display: block; width: 100%; margin: 0 0 .85rem; }
.guest-key-error { margin: 0 0 .85rem; }
.guest-key-error a { color: var(--brand-red, #b23a48); font-weight: 600; text-decoration: underline; }
#guest-key-modal .guest-modal-ok { margin-top: 0; }

.account-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 10px; }
.account-info { display: inline-flex; align-items: center; gap: 6px; font-size: .82rem; color: var(--color-text-muted); overflow: hidden; }
.account-info #account-nick { font-weight: 600; color: var(--color-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.logout-btn { flex: none; border: 1px solid var(--color-border); background: transparent; color: var(--color-text-muted); cursor: pointer; font-size: .76rem; padding: 5px 10px; border-radius: 7px; }
.logout-btn:hover { color: var(--color-text); border-color: var(--color-text-muted); }

/* ============================================================
   Mejoras: contraste de botones del sidebar + créditos LinkedIn
   ============================================================ */

/* --- Sidebar account + reset buttons: higher contrast on dark ink --- */
.account-info { color: rgba(233,236,243,.72); }
.account-info #account-nick { color: #fff; }

.logout-btn {
  flex: none; cursor: pointer; font-size: .76rem; font-weight: 600;
  padding: 5px 12px; border-radius: 7px;
  border: 1px solid rgba(255,255,255,.34);
  background: rgba(255,255,255,.06);
  color: #f3f5f9;
  transition: var(--transition);
}
.logout-btn:hover {
  color: #fff;
  border-color: var(--brand-gold);
  background: color-mix(in srgb, var(--brand-gold) 22%, transparent);
}

.reset-btn {
  font-size: .78rem; font-weight: 600;
  color: rgba(233,236,243,.82);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm); width: 100%;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.04);
  transition: var(--transition);
}
.reset-btn:hover {
  color: #fff;
  border-color: rgba(255,255,255,.4);
  background: rgba(255,255,255,.10);
}

/* --- Credit wrapper (base) --- */
.credit-wrap { display: inline-block; }

/* --- Topbar credit (always visible, discreet) --- */
/* Absolutely centered in the topbar, independent of title/icons width */
.topbar-credit-wrap {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  pointer-events: auto;
}
.topbar-credit {
  border: 0; background: none; padding: 0; cursor: pointer;
  font-family: var(--font-display, serif);
  font-size: .76rem; font-weight: 400; letter-spacing: .02em;
  color: var(--color-text-muted);
  white-space: nowrap;
  transition: color var(--transition);
}
.topbar-credit:hover { color: var(--color-accent); }
/* Hide on narrow screens where it would collide with title/icons */
@media (max-width: 860px) {
  .topbar-credit-wrap { display: none; }
}

/* --- Login screen credit (below the card, with breathing room) --- */
.auth-credit-wrap { position: relative; text-align: center; margin-top: 22px; }
.auth-credit {
  border: 0; background: none; padding: 0; cursor: pointer;
  font-family: var(--font-display, serif);
  font-size: .8rem; font-weight: 400; letter-spacing: .02em;
  color: rgba(233,236,243,.55);
  transition: color var(--transition);
}
.auth-credit:hover { color: var(--brand-gold, #d9b878); }

/* --- Credit popover (globo con los LinkedIn de los autores) --- */
.credit-pop {
  position: absolute; left: 50%; transform: translateX(-50%);
  top: calc(100% + 8px); z-index: 1100;
  display: flex; flex-direction: column; gap: 2px;
  min-width: 180px; padding: 8px;
  background: var(--brand-cream, #e9ddc2);
  border: 1px solid var(--brand-gold, #c8a45c); border-radius: 10px;
  box-shadow: 0 10px 30px rgba(11, 31, 58, .3);
}
/* Variante que se abre hacia arriba (login, donde el crédito está abajo) */
.credit-pop--up { top: auto; bottom: calc(100% + 8px); }
.credit-pop[hidden] { display: none; }
.credit-pop-label {
  font-size: .66rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--color-text-muted, #6b7280); padding: 2px 8px 4px;
}
.credit-pop-link {
  display: block; padding: 7px 10px; border-radius: 7px;
  font-family: var(--font-body, sans-serif); font-size: .85rem; font-weight: 600;
  color: var(--brand-ink, #0b1f3a); text-decoration: none;
  transition: background .12s ease, color .12s ease;
}
.credit-pop-link:hover { background: var(--brand-ink, #0b1f3a); color: #fff; }
.credit-pop-link:focus-visible { outline: 2px solid var(--brand-gold, #c8a45c); outline-offset: 1px; }