/* ════════════════════════════════════════════════════════════════════════
   DVC Quảng Ngãi — huong-dan.css
   Trang hướng dẫn cài đặt tiện ích. Kế thừa design tokens từ styles.css.
   ════════════════════════════════════════════════════════════════════════ */

.guide-body { background: var(--color-bg); }

.guide-back-btn { margin-left: auto; white-space: nowrap; }

.guide-main {
  max-width: 940px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

/* ── HERO ─────────────────────────────────────────────────────────── */
.guide-hero {
  text-align: center;
  padding: 40px 24px 44px;
  background: linear-gradient(160deg, var(--color-primary-soft), var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.guide-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 18px;
}
.guide-hero__badge svg { width: 15px; height: 15px; }

.guide-hero__title {
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 14px;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.guide-hero__desc {
  max-width: 620px;
  margin: 0 auto 26px;
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--color-text-muted);
}
.guide-hero__desc strong { color: var(--color-text); }

.guide-hero__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.guide-dl-btn { gap: 8px; font-size: 15px; padding: 12px 22px; }
.guide-dl-btn svg { width: 18px; height: 18px; }

.guide-hero__meta {
  margin: 20px 0 0;
  font-size: 12.5px;
  color: var(--color-text-faint);
}

/* ── PROGRESS RAIL ────────────────────────────────────────────────── */
.guide-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 28px 0 8px;
  position: sticky;
  top: 12px;
  z-index: 20;
}
.guide-rail__item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 12.5px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: all .15s ease;
}
.guide-rail__item:hover { color: var(--color-primary); border-color: var(--color-primary); }
.guide-rail__item.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.guide-rail__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 11px;
  font-weight: 700;
}
.guide-rail__item.is-active .guide-rail__num { background: rgba(255,255,255,.25); color: #fff; }

/* ── STEPS ────────────────────────────────────────────────────────── */
.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-top: 28px;
}

.guide-step {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 76px;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.guide-step:hover { box-shadow: var(--shadow-md); }
.guide-step:nth-child(even) { grid-template-columns: 1fr 1fr; direction: rtl; }
.guide-step:nth-child(even) > * { direction: ltr; }

.guide-step__body {
  display: flex;
  gap: 16px;
  padding: 28px 26px;
}

.guide-step__num {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(26,86,219,.3);
}

.guide-step__title {
  font-size: 18px;
  font-weight: 700;
  margin: 6px 0 10px;
  color: var(--color-text);
  line-height: 1.3;
}
.guide-step__text p { margin: 0 0 12px; font-size: 14.5px; line-height: 1.6; color: var(--color-text-muted); }
.guide-step__text p strong { color: var(--color-text); }
.guide-step__hint { font-size: 13px; color: var(--color-text-faint); }

kbd {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 5px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-bottom-width: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text);
}

/* ── Notes / callouts ─────────────────────────────────────────────── */
.guide-note {
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  line-height: 1.55;
  border-left: 3px solid;
}
.guide-note strong { font-weight: 700; }
.guide-note--tip  { background: var(--color-info-soft);    border-color: var(--color-info);    color: var(--color-text); }
.guide-note--warn { background: var(--color-warning-soft); border-color: var(--color-warning); color: var(--color-text); }
.guide-note--ok   { background: var(--color-success-soft); border-color: var(--color-success); color: var(--color-text); }

/* ── Copy box ─────────────────────────────────────────────────────── */
.guide-copy {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 8px 8px 14px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin: 0 0 12px;
}
.guide-copy .mono { font-size: 14px; color: var(--color-primary); font-weight: 600; }
.guide-copy__btn {
  flex-shrink: 0;
  padding: 6px 12px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s ease;
}
.guide-copy__btn:hover { background: var(--color-primary-dark); }
.guide-copy__btn.is-done { background: var(--color-success); }

/* ── Screenshot / illustration panel ──────────────────────────────── */
.guide-shot {
  margin: 0;
  padding: 20px;
  background: repeating-linear-gradient(45deg, var(--color-bg-soft), var(--color-bg-soft) 12px, var(--color-surface-2) 12px, var(--color-surface-2) 24px);
  display: flex;
  align-items: center;
  justify-content: center;
  border-left: 1px solid var(--color-border);
}
.guide-step:nth-child(even) .guide-shot { border-left: none; border-right: 1px solid var(--color-border); }
.guide-shot svg { width: 100%; height: auto; max-width: 380px; border-radius: var(--radius); box-shadow: var(--shadow-md); }

/* ── FAQ ──────────────────────────────────────────────────────────── */
.guide-faq { margin-top: 44px; }
.guide-faq__title {
  font-size: 20px;
  font-weight: 700;
  text-align: center;
  margin: 0 0 20px;
  color: var(--color-text);
}
.guide-faq__item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
}
.guide-faq__item summary {
  padding: 15px 18px;
  font-weight: 600;
  font-size: 14.5px;
  cursor: pointer;
  color: var(--color-text);
  list-style: none;
  position: relative;
  padding-right: 42px;
}
.guide-faq__item summary::-webkit-details-marker { display: none; }
.guide-faq__item summary::after {
  content: '+';
  position: absolute;
  right: 18px; top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-text-faint);
  transition: transform .2s ease;
}
.guide-faq__item[open] summary::after { content: '−'; }
.guide-faq__item p {
  margin: 0;
  padding: 0 18px 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-muted);
}

/* ── CTA ──────────────────────────────────────────────────────────── */
.guide-cta {
  margin-top: 44px;
  text-align: center;
  padding: 36px 24px;
  background: linear-gradient(160deg, var(--color-primary-soft), var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}
.guide-cta h2 { font-size: 22px; font-weight: 800; margin: 0 0 8px; color: var(--color-text); }
.guide-cta p { margin: 0 0 20px; color: var(--color-text-muted); font-size: 15px; }

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 720px) {
  .guide-step, .guide-step:nth-child(even) { grid-template-columns: 1fr; direction: ltr; }
  .guide-shot { border-left: none !important; border-right: none !important; border-top: 1px solid var(--color-border); }
  .guide-step:nth-child(even) .guide-shot { border-right: none; }
  .guide-rail { position: static; }
}