/* ================================================================
   SOLVITAS — Guide / Article stylesheet
   Inherits tokens from styles.css · Add AFTER styles.css
   ================================================================ */

/* ── Guide-specific layout ──────────────────────────────────── */

/* Progress bar at top */
#reading-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  z-index: 9998;
  background: linear-gradient(90deg, var(--b400), var(--teal));
  transition: width 80ms linear;
  box-shadow: 0 0 8px rgba(59,130,246,0.5);
}

/* ── Guide hero ─────────────────────────────────────────────── */
.guide-hero {
  padding-top: 3rem;
  padding-bottom: 4rem;
  position: relative;
  overflow: hidden;
}

.guide-hero::before {
  content: '';
  position: absolute;
  top: -30%; left: -15%;
  width: 65%; height: 90%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.guide-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--t3);
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

.guide-breadcrumb a {
  color: var(--b300);
  transition: color var(--t-base);
}

.guide-breadcrumb a:hover { color: var(--b200); }

.guide-breadcrumb-sep {
  color: var(--t4);
  font-size: 0.7rem;
}

.guide-meta-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}

.guide-cat {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.22rem 0.85rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  border: 1px solid;
}

.guide-cat-movil   { color: #67e8f9; border-color: rgba(6,182,212,0.3); background: rgba(6,182,212,0.08); }
.guide-cat-seg     { color: #fde68a; border-color: rgba(245,158,11,0.3); background: rgba(245,158,11,0.08); }
.guide-cat-wifi    { color: #a5f3fc; border-color: rgba(14,165,233,0.3); background: rgba(14,165,233,0.08); }

.guide-reading-time {
  font-size: 0.78rem;
  color: var(--t3);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.guide-hero-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--t1);
  max-width: 46rem;
  margin-bottom: 1.2rem;
}

.guide-hero-intro {
  font-size: 1.1rem;
  color: var(--t2);
  max-width: 38rem;
  line-height: 1.8;
  margin-bottom: 2rem;
}

/* Key points / quick summary */
.guide-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 0;
}

.guide-summary-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  border-radius: var(--r-md);
  border: 1px solid var(--bdr);
  background: linear-gradient(145deg, var(--ink-2), var(--ink-1));
  transition: border-color var(--t-base);
}

.guide-summary-item:hover { border-color: var(--bdr-blue); }

.guide-summary-ico {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 0.05rem;
}

.guide-summary-label {
  font-size: 0.8rem;
  color: var(--t3);
  font-weight: 500;
  margin-bottom: 0.15rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.guide-summary-val {
  font-size: 0.875rem;
  color: var(--t1);
  font-weight: 500;
  line-height: 1.4;
}

/* ── Article layout ─────────────────────────────────────────── */
.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 3.5rem;
  align-items: start;
  padding-bottom: 5rem;
}

/* ── Sidebar (ToC) ──────────────────────────────────────────── */
.guide-toc {
  position: sticky;
  top: 88px;
  border-radius: var(--r-lg);
  background: linear-gradient(155deg, var(--ink-2), var(--ink-1));
  border: 1px solid var(--bdr);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--sh-card);
}

.guide-toc-title {
  font-family: 'Syne', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--t3);
  margin-bottom: 1rem;
}

.guide-toc-list {
  display: grid;
  gap: 0.2rem;
}

.guide-toc-list a {
  display: block;
  font-size: 0.82rem;
  color: var(--t3);
  padding: 0.4rem 0.6rem;
  border-radius: 7px;
  border-left: 2px solid transparent;
  transition: color var(--t-base), background var(--t-base), border-color var(--t-base);
  line-height: 1.45;
}

.guide-toc-list a:hover {
  color: var(--t1);
  background: rgba(255,255,255,0.04);
  border-left-color: var(--b400);
}

.guide-toc-list a.active {
  color: var(--b200);
  background: rgba(37,99,235,0.08);
  border-left-color: var(--b400);
}

.guide-toc-cta {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--bdr);
}

.guide-toc-cta p {
  font-size: 0.78rem;
  color: var(--t3);
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

/* ── Article body ───────────────────────────────────────────── */
.guide-article {
  min-width: 0;
}

/* Section block */
.guide-section {
  margin-bottom: 3.5rem;
}

.guide-section-num {
  font-family: 'Syne', sans-serif;
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--b400);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.guide-section-num::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--bdr-blue), transparent);
}

.guide-section-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.45rem;
  letter-spacing: -0.02em;
  color: var(--t1);
  margin-bottom: 1rem;
  line-height: 1.25;
}

.guide-section-body {
  font-size: 0.965rem;
  color: var(--t2);
  line-height: 1.85;
}

.guide-section-body p + p { margin-top: 0.9rem; }

.guide-section-body strong { color: var(--t1); font-weight: 600; }

.guide-section-body em { color: var(--b200); font-style: normal; font-weight: 500; }

/* Step cards */
.steps-grid {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.4rem;
}

.step-card {
  display: flex;
  gap: 1.2rem;
  padding: 1.3rem 1.4rem;
  border-radius: var(--r-md);
  border: 1px solid var(--bdr);
  background: linear-gradient(145deg, var(--ink-2), var(--ink-1));
  transition: border-color var(--t-base), transform var(--t-slow) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--b400), var(--teal));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.45s var(--ease-out);
}

.step-card:hover {
  border-color: rgba(59,130,246,0.2);
  transform: translateX(4px);
}

.step-card:hover::before { transform: scaleY(1); }

.step-num {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--b500);
  opacity: 0.4;
  letter-spacing: -0.04em;
  flex-shrink: 0;
  line-height: 1;
  padding-top: 0.1rem;
  min-width: 2rem;
  transition: opacity var(--t-base), color var(--t-base);
}

.step-card:hover .step-num { opacity: 0.75; color: var(--b300); }

.step-content-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.96rem;
  color: var(--t1);
  margin-bottom: 0.3rem;
}

.step-content-body {
  font-size: 0.875rem;
  color: var(--t2);
  line-height: 1.7;
}

.step-content-body strong { color: var(--t1); font-weight: 600; }

/* Tip / callout boxes */
.callout {
  display: flex;
  gap: 1rem;
  padding: 1.2rem 1.4rem;
  border-radius: var(--r-md);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  border: 1px solid;
}

.callout-tip {
  background: rgba(37,99,235,0.07);
  border-color: rgba(37,99,235,0.2);
}

.callout-warning {
  background: rgba(245,158,11,0.07);
  border-color: rgba(245,158,11,0.22);
}

.callout-success {
  background: rgba(34,197,94,0.07);
  border-color: rgba(34,197,94,0.2);
}

.callout-danger {
  background: rgba(239,68,68,0.07);
  border-color: rgba(239,68,68,0.2);
}

.callout-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 0.05rem;
}

.callout-label {
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: 0.3rem;
}

.callout-tip     .callout-label { color: var(--b300); }
.callout-warning .callout-label { color: var(--amber-l); }
.callout-success .callout-label { color: var(--green-l); }
.callout-danger  .callout-label { color: #fca5a5; }

.callout-text {
  font-size: 0.875rem;
  color: var(--t2);
  line-height: 1.7;
}

.callout-text strong { color: var(--t1); font-weight: 600; }

/* Quick list (checkmarks) */
.check-list {
  display: grid;
  gap: 0.6rem;
  margin-top: 1.2rem;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--t2);
  line-height: 1.65;
}

.check-list li::before {
  content: '✓';
  color: var(--green-l);
  font-size: 0.85rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: rgba(34,197,94,0.12);
  border: 1px solid rgba(34,197,94,0.25);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}

.check-list li strong { color: var(--t1); font-weight: 600; }

/* Highlight box (featured insight) */
.highlight-box {
  padding: 1.6rem 1.8rem;
  border-radius: var(--r-lg);
  border: 1px solid rgba(37,99,235,0.25);
  background: linear-gradient(135deg, rgba(37,99,235,0.1), rgba(6,182,212,0.05));
  margin-top: 1.5rem;
  position: relative;
  overflow: hidden;
}

.highlight-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(96,165,250,0.5), rgba(34,211,238,0.3), transparent);
}

.highlight-box-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--t1);
  margin-bottom: 0.5rem;
}

.highlight-box-body {
  font-size: 0.9rem;
  color: var(--t2);
  line-height: 1.75;
}

.highlight-box-body strong { color: var(--b100); font-weight: 600; }

/* Two-column fact grid */
.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.4rem;
}

.fact-card {
  padding: 1.1rem 1.2rem;
  border-radius: var(--r-md);
  border: 1px solid var(--bdr);
  background: linear-gradient(145deg, var(--ink-2), var(--ink-1));
}

.fact-card-ico { font-size: 1.4rem; margin-bottom: 0.5rem; }

.fact-card-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--t1);
  margin-bottom: 0.3rem;
}

.fact-card-body {
  font-size: 0.815rem;
  color: var(--t2);
  line-height: 1.6;
}

/* Article divider */
.guide-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--bdr), transparent);
  margin: 2.5rem 0;
}

/* ── Bottom CTA strip ───────────────────────────────────────── */
.guide-cta-strip {
  border-radius: var(--r-xl);
  border: 1px solid rgba(37,99,235,0.3);
  background: linear-gradient(135deg,
    rgba(10,25,50,0.98) 0%,
    rgba(6,15,30,0.99) 100%);
  padding: 2.2rem 2.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: center;
  box-shadow: 0 30px 80px rgba(37,99,235,0.2), inset 0 1px 0 rgba(96,165,250,0.1);
  position: relative;
  overflow: hidden;
  margin-bottom: 4rem;
}

.guide-cta-strip::before {
  content: '';
  position: absolute;
  top: -40%; left: -10%;
  width: 50%; height: 200%;
  background: radial-gradient(ellipse, rgba(37,99,235,0.14) 0%, transparent 65%);
  pointer-events: none;
}

.guide-cta-strip::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(96,165,250,0.5), rgba(6,182,212,0.3), transparent);
}

.guide-cta-strip-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--t1);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.guide-cta-strip-body {
  font-size: 0.9rem;
  color: var(--t2);
  line-height: 1.7;
}

.guide-cta-strip-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  position: relative; z-index: 1;
}

.guide-cta-strip-note {
  font-size: 0.75rem;
  color: var(--t3);
  line-height: 1.5;
  border-top: 1px solid var(--bdr);
  padding-top: 0.75rem;
  width: 100%;
}

/* ── Related guides ─────────────────────────────────────────── */
.guide-related {
  margin-bottom: 4rem;
}

.guide-related-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--t1);
  margin-bottom: 1.2rem;
}

.guide-related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.guide-related-card {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 1.1rem 1.2rem;
  border-radius: var(--r-md);
  border: 1px solid var(--bdr);
  background: linear-gradient(145deg, var(--ink-2), var(--ink-1));
  transition: border-color var(--t-base), transform var(--t-slow) var(--ease-out);
}

.guide-related-card:hover {
  border-color: rgba(59,130,246,0.25);
  transform: translateY(-3px);
}

.guide-related-ico {
  font-size: 1.3rem;
  flex-shrink: 0;
  padding-top: 0.05rem;
}

.guide-related-cat {
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--teal);
  margin-bottom: 0.2rem;
}

.guide-related-name {
  font-size: 0.865rem;
  font-weight: 600;
  color: var(--t1);
  line-height: 1.35;
  margin-bottom: 0.2rem;
}

.guide-related-link {
  font-size: 0.75rem;
  color: var(--b300);
  font-weight: 600;
  transition: color var(--t-base);
}

.guide-related-link:hover { color: var(--b200); }
.guide-related-link::after { content: ' →'; }

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 960px) {
  .guide-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .guide-toc {
    position: static;
    order: -1;
  }

  .guide-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .guide-cta-strip {
    grid-template-columns: minmax(0, 1fr);
    padding: 1.8rem;
    gap: 1.5rem;
  }
}

@media (max-width: 640px) {
  .guide-summary { grid-template-columns: minmax(0, 1fr); }
  .fact-grid      { grid-template-columns: minmax(0, 1fr); }
  .guide-related-grid { grid-template-columns: minmax(0, 1fr); }
  .guide-hero-title { font-size: 1.9rem; }
}