/* ═══════════════════════════════════════════════════════════
   Design System — Rastreio Internacional
   Mobile-first, system-font, zero external requests
═══════════════════════════════════════════════════════════ */

:root {
  --c-primary:       #1a73e8;
  --c-primary-dark:  #1557b0;
  --c-primary-light: #e8f0fe;
  --c-success:       #16a34a;
  --c-warning:       #d97706;
  --c-error:         #dc2626;
  --c-unknown:       #6b7280;
  --c-text:          #111827;
  --c-text-2:        #4b5563;
  --c-bg:            #ffffff;
  --c-bg-2:          #f9fafb;
  --c-border:        #e5e7eb;
  --c-card:          #ffffff;
  --r-md:   0.5rem;
  --r-lg:   1rem;
  --r-xl:   1.5rem;
  --sh-sm:  0 1px 3px rgba(0,0,0,.08);
  --sh-md:  0 4px 16px rgba(0,0,0,.10);
  --font:   system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --max-w:  1100px;
  --max-w-narrow: 720px;
}

[data-theme="dark"] {
  --c-text:   #f9fafb;
  --c-text-2: #9ca3af;
  --c-bg:     #0f172a;
  --c-bg-2:   #1e293b;
  --c-border: #334155;
  --c-card:   #1e293b;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; text-size-adjust: 100%; }
body { font-family: var(--font); color: var(--c-text); background: var(--c-bg); line-height: 1.6; transition: background .2s, color .2s; }
img, svg { display: block; max-width: 100%; }
a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; }
button { cursor: pointer; font-family: var(--font); }

/* ── Container ── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 16px; }
.container--narrow { max-width: var(--max-w-narrow); margin: 0 auto; padding: 0 16px; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--r-md);
  font-size: .95rem; font-weight: 600; border: 2px solid transparent;
  transition: background .15s, border-color .15s, color .15s, transform .1s;
  white-space: nowrap; text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--c-primary); color: #fff; }
.btn--primary:hover { background: var(--c-primary-dark); text-decoration: none; color: #fff; }
.btn--ghost { background: transparent; border-color: var(--c-border); color: var(--c-text); }
.btn--ghost:hover { background: var(--c-bg-2); }
.btn--lg { padding: 14px 28px; font-size: 1.05rem; }
.btn--sm { padding: 6px 12px; font-size: .85rem; }
.w-full { width: 100%; justify-content: center; }

/* ── Nav ── */
.site-header { position: sticky; top: 0; z-index: 100; background: var(--c-bg); border-bottom: 1px solid var(--c-border); backdrop-filter: blur(8px); }
.nav { display: flex; align-items: center; gap: 12px; padding: 12px 16px; }
.nav__logo { display: flex; align-items: center; gap: 8px; font-size: 1.1rem; font-weight: 700; color: var(--c-primary); margin-right: auto; }
.nav__logo svg { color: var(--c-primary); }
.nav__links { display: none; gap: 24px; list-style: none; }
.nav__links li a { color: var(--c-text-2); font-size: .9rem; font-weight: 500; }
.nav__links li a:hover { color: var(--c-primary); text-decoration: none; }
@media (min-width: 640px) { .nav__links { display: flex; } }

/* Language dropdown */
.nav__lang { position: relative; }
.lang-btn { display: flex; align-items: center; gap: 4px; background: none; border: 1px solid var(--c-border); border-radius: var(--r-md); padding: 6px 10px; font-size: .85rem; color: var(--c-text); }
.lang-btn:hover { background: var(--c-bg-2); }
.lang-dropdown { position: absolute; right: 0; top: calc(100% + 8px); background: var(--c-card); border: 1px solid var(--c-border); border-radius: var(--r-md); box-shadow: var(--sh-md); min-width: 150px; z-index: 200; }
.lang-dropdown a { display: block; padding: 10px 16px; color: var(--c-text); font-size: .9rem; }
.lang-dropdown a:hover { background: var(--c-bg-2); text-decoration: none; }

/* Theme button */
.theme-btn { background: none; border: 1px solid var(--c-border); border-radius: var(--r-md); padding: 6px; display: flex; align-items: center; color: var(--c-text); }
.theme-btn:hover { background: var(--c-bg-2); }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* ── Hero ── */
.hero { background: linear-gradient(135deg, var(--c-primary) 0%, #1557b0 100%); color: #fff; padding: 56px 16px 64px; text-align: center; }
.hero__title { font-size: clamp(1.6rem, 4vw, 2.6rem); font-weight: 800; line-height: 1.2; margin-bottom: 12px; }
.hero__sub { font-size: clamp(.9rem, 2vw, 1.1rem); opacity: .85; margin-bottom: 32px; }
.hero__hint { margin-top: 16px; font-size: .85rem; opacity: .7; }
.link--muted { color: rgba(255,255,255,.8); text-decoration: underline; }

/* ── Track Form ── */
.track-form__inner { display: flex; flex-direction: column; gap: 8px; max-width: 680px; margin: 0 auto; }
@media (min-width: 540px) { .track-form__inner { flex-direction: row; } }
.track-form__input {
  flex: 1; padding: 14px 16px; border: 2px solid rgba(255,255,255,.3);
  border-radius: var(--r-md); background: rgba(255,255,255,.95); color: #111;
  font-size: 1rem; font-family: var(--font); outline: none;
}
.track-form__input:focus { border-color: rgba(255,255,255,.8); }
.track-form--large .track-form__input,
.track-form--compact .track-form__input { background: var(--c-bg); border-color: var(--c-border); color: var(--c-text); }
.track-form--compact { margin: 24px 0; }

/* ── Recent Searches ── */
.recent-searches { padding: 16px 16px 0; }
.recent-searches__title { font-size: .85rem; color: var(--c-text-2); margin-bottom: 8px; }
.recent-searches__list { display: flex; flex-wrap: wrap; gap: 8px; }
.recent-chip { padding: 4px 12px; background: var(--c-bg-2); border: 1px solid var(--c-border); border-radius: 999px; font-size: .82rem; color: var(--c-primary); }

/* ── Section ── */
.section { padding: 48px 0; }
.section__title { font-size: 1.5rem; font-weight: 700; margin-bottom: 24px; }

/* ── Carriers Grid ── */
.carriers__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
.carrier-card { display: flex; align-items: center; justify-content: center; padding: 16px 12px; background: var(--c-card); border: 1px solid var(--c-border); border-radius: var(--r-lg); text-align: center; transition: box-shadow .15s, border-color .15s; }
.carrier-card:hover { box-shadow: var(--sh-md); border-color: var(--c-primary); text-decoration: none; }
.carrier-card__name { font-weight: 600; font-size: .9rem; color: var(--c-text); }

/* ── How it works ── */
.how { background: var(--c-bg-2); }
.how__steps { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 720px) { .how__steps { grid-template-columns: repeat(3, 1fr); } }
.how__step { text-align: center; padding: 24px; }
.how__icon { width: 48px; height: 48px; border-radius: 50%; background: var(--c-primary); color: #fff; font-size: 1.3rem; font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.how__step h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
.how__step p { color: var(--c-text-2); font-size: .9rem; }

/* ── Result Page ── */
.result__layout { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 900px) { .result__layout { grid-template-columns: 1fr 320px; } }
.result__main { display: flex; flex-direction: column; gap: 20px; }
.result__aside { display: flex; flex-direction: column; gap: 16px; }

/* Result card */
.result-card { background: var(--c-card); border: 1px solid var(--c-border); border-radius: var(--r-lg); padding: 24px; }
.result-card__header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 16px; gap: 12px; }
.result-card__code { font-size: 1.4rem; font-weight: 700; font-family: monospace; word-break: break-all; }
.result-card__actions { display: flex; gap: 8px; flex-shrink: 0; }
.result-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: .88rem; color: var(--c-text-2); margin-top: 12px; }
.result-meta__updated { font-style: italic; }
.source-link { display: inline-block; margin-top: 12px; font-size: .85rem; color: var(--c-primary); }

/* Badge */
.badge { display: inline-flex; padding: 4px 10px; border-radius: 999px; font-size: .8rem; font-weight: 600; }
.badge--carrier { background: var(--c-primary-light); color: var(--c-primary); }

/* Status badge */
.status-badge { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-radius: var(--r-md); font-size: 1rem; font-weight: 600; margin-top: 12px; }
.status-badge__dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; animation: pulse 2s infinite; }
.status-badge--delivered   { background: #dcfce7; color: var(--c-success); }
.status-badge--delivered   .status-badge__dot { background: var(--c-success); }
.status-badge--out_for_delivery { background: #fef9c3; color: #854d0e; }
.status-badge--out_for_delivery .status-badge__dot { background: #ca8a04; }
.status-badge--in_transit  { background: #dbeafe; color: var(--c-primary); }
.status-badge--in_transit  .status-badge__dot { background: var(--c-primary); }
.status-badge--pending     { background: var(--c-bg-2); color: var(--c-text-2); }
.status-badge--pending     .status-badge__dot { background: var(--c-text-2); animation: none; }
.status-badge--unknown     { background: var(--c-bg-2); color: var(--c-text-2); }
.status-badge--unknown     .status-badge__dot { background: var(--c-text-2); animation: none; }
.status-badge--failed,
.status-badge--returned    { background: #fee2e2; color: var(--c-error); }
.status-badge--failed .status-badge__dot,
.status-badge--returned .status-badge__dot { background: var(--c-error); animation: none; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

/* ── Timeline ── */
.timeline-card { background: var(--c-card); border: 1px solid var(--c-border); border-radius: var(--r-lg); padding: 24px; }
.timeline-card__title { font-size: 1.1rem; font-weight: 700; margin-bottom: 20px; }
.timeline-empty { color: var(--c-text-2); font-size: .9rem; }
.timeline { position: relative; padding-left: 24px; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: var(--c-border); }
.timeline__item { position: relative; padding-bottom: 24px; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__dot { position: absolute; left: -24px; top: 4px; width: 16px; height: 16px; border-radius: 50%; background: var(--c-border); border: 3px solid var(--c-bg); }
.timeline__item--latest .timeline__dot { background: var(--c-primary); }
.timeline__time { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.timeline__date { font-size: .82rem; color: var(--c-text-2); }
.timeline__hour { font-size: .82rem; color: var(--c-text-2); }
.timeline__desc { font-size: .95rem; font-weight: 500; }
.timeline__item--latest .timeline__desc { color: var(--c-primary); font-weight: 600; }
.timeline__location { font-size: .82rem; color: var(--c-text-2); display: flex; align-items: center; gap: 4px; margin-top: 2px; }

/* ── Notify card ── */
.notify-card { background: var(--c-card); border: 1px solid var(--c-border); border-radius: var(--r-lg); padding: 20px; }
.notify-card__title { font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
.notify-card__done { font-size: .88rem; color: var(--c-text-2); }
.notify-success { color: var(--c-success); font-size: .9rem; padding: 8px 0; }

/* ── Share card ── */
.share-card { background: var(--c-card); border: 1px solid var(--c-border); border-radius: var(--r-lg); padding: 16px; }
.share-card h3 { font-size: .95rem; font-weight: 600; margin-bottom: 12px; }
.share-btns { display: flex; gap: 8px; flex-wrap: wrap; }
.share-btn { padding: 8px 16px; border-radius: var(--r-md); font-size: .85rem; font-weight: 600; color: #fff; }
.share-btn--whatsapp { background: #25d366; }
.share-btn--whatsapp:hover { background: #1da851; text-decoration: none; }
.share-btn--telegram { background: #0088cc; }
.share-btn--telegram:hover { background: #0077b5; text-decoration: none; }

/* ── Forms ── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: .88rem; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group textarea {
  width: 100%; padding: 10px 14px;
  border: 2px solid var(--c-border); border-radius: var(--r-md);
  background: var(--c-bg); color: var(--c-text); font-size: .95rem; font-family: var(--font);
  transition: border-color .15s;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--c-primary); outline: none; }
.form-group textarea { resize: vertical; min-height: 120px; }

/* ── Alert ── */
.alert { padding: 12px 16px; border-radius: var(--r-md); font-size: .9rem; margin-bottom: 20px; }
.alert--success { background: #dcfce7; color: var(--c-success); border: 1px solid #86efac; }
.alert--error { background: #fee2e2; color: var(--c-error); border: 1px solid #fca5a5; }

/* ── Blog ── */
.page-title { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.page-desc { color: var(--c-text-2); margin-bottom: 24px; }
.article-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-top: 32px; }
@media (min-width: 640px) { .article-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .article-grid { grid-template-columns: repeat(3, 1fr); } }
.article-card { background: var(--c-card); border: 1px solid var(--c-border); border-radius: var(--r-lg); overflow: hidden; transition: box-shadow .15s, border-color .15s; }
.article-card:hover { box-shadow: var(--sh-md); border-color: var(--c-primary); }
.article-card__link { display: block; padding: 20px; color: var(--c-text); }
.article-card__link:hover { text-decoration: none; }
.article-card__title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.article-card__excerpt { font-size: .88rem; color: var(--c-text-2); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.article-card__meta { font-size: .8rem; color: var(--c-text-2); display: flex; gap: 8px; }

/* ── Article ── */
.article-layout { display: grid; grid-template-columns: 1fr; gap: 32px; padding: 32px 16px; }
@media (min-width: 900px) { .article-layout { grid-template-columns: 1fr 280px; } }
.article-header { margin-bottom: 28px; }
.article-header__title { font-size: clamp(1.5rem, 3.5vw, 2.2rem); font-weight: 800; line-height: 1.3; margin-bottom: 12px; }
.article-header__meta { font-size: .85rem; color: var(--c-text-2); display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.article-tags { display: flex; gap: 6px; }
.tag { background: var(--c-primary-light); color: var(--c-primary); padding: 2px 8px; border-radius: 999px; font-size: .75rem; font-weight: 600; }
.article-content { font-size: 1rem; line-height: 1.8; }
.article-content h2 { font-size: 1.4rem; font-weight: 700; margin: 32px 0 12px; }
.article-content h3 { font-size: 1.15rem; font-weight: 700; margin: 24px 0 8px; }
.article-content p { margin-bottom: 16px; }
.article-content ul, .article-content ol { padding-left: 24px; margin-bottom: 16px; }
.article-content li { margin-bottom: 6px; }
.article-content table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: .9rem; overflow-x: auto; display: block; }
.article-content th, .article-content td { border: 1px solid var(--c-border); padding: 10px 14px; }
.article-content th { background: var(--c-bg-2); font-weight: 600; }
.article-content blockquote { border-left: 4px solid var(--c-primary); padding: 12px 20px; background: var(--c-bg-2); margin: 20px 0; border-radius: 0 var(--r-md) var(--r-md) 0; }
.article-track-cta { background: var(--c-bg-2); border-radius: var(--r-lg); padding: 20px; margin: 24px 0; }
.article-bottom-cta { background: var(--c-primary-light); border-radius: var(--r-lg); padding: 24px; margin-top: 40px; text-align: center; }
.article-bottom-cta h3 { margin-bottom: 16px; font-size: 1.2rem; }
.article-aside { display: flex; flex-direction: column; gap: 20px; }
.aside-links h3 { font-size: .95rem; font-weight: 700; margin-bottom: 10px; }
.aside-links ul li { padding: 4px 0; border-bottom: 1px solid var(--c-border); }
.aside-links ul li a { font-size: .88rem; }

/* ── Carrier Page ── */
.carrier-page h1 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; }
.carrier-page__desc { font-size: 1rem; color: var(--c-text-2); margin-bottom: 28px; }
.carrier-info { margin-top: 40px; }
.carrier-info h2 { font-size: 1.3rem; font-weight: 700; margin: 28px 0 12px; }
.steps-list { padding-left: 20px; color: var(--c-text-2); }
.steps-list li { margin-bottom: 8px; }
.faq dt { font-weight: 700; margin-top: 20px; }
.faq dd { color: var(--c-text-2); margin-top: 4px; padding-left: 0; }

/* ── Institutional ── */
.institutional h1 { font-size: 2rem; font-weight: 800; margin-bottom: 20px; }
.institutional h2 { font-size: 1.2rem; font-weight: 700; margin: 28px 0 10px; }
.institutional p { color: var(--c-text-2); margin-bottom: 12px; }
.institutional ul { padding-left: 20px; color: var(--c-text-2); }
.institutional ul li { margin-bottom: 6px; }

/* ── Contact Form ── */
.contact-form { margin-top: 24px; max-width: 600px; }

/* ── Error Page ── */
.error-page__code { font-size: 6rem; font-weight: 900; color: var(--c-primary); line-height: 1; }
.error-page__title { font-size: 1.5rem; font-weight: 700; margin: 12px 0 8px; }
.error-page__desc { color: var(--c-text-2); }

/* ── Footer ── */
.site-footer { background: var(--c-bg-2); border-top: 1px solid var(--c-border); margin-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 32px; padding: 48px 16px 32px; }
@media (min-width: 640px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer-brand { }
.footer-logo { font-size: 1.2rem; font-weight: 800; color: var(--c-primary); display: block; margin-bottom: 8px; }
.footer-brand p { font-size: .88rem; color: var(--c-text-2); margin-top: 8px; }
.footer-links h3 { font-size: .9rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--c-text-2); margin-bottom: 12px; }
.footer-links ul li { padding: 4px 0; }
.footer-links ul li a { font-size: .88rem; color: var(--c-text-2); }
.footer-links ul li a:hover { color: var(--c-primary); }
.footer-bottom { border-top: 1px solid var(--c-border); padding: 16px 0; }
.footer-bottom p { font-size: .8rem; color: var(--c-text-2); }
.footer-disclaimer { margin-top: 4px; font-size: .75rem; }

/* ── Breadcrumb ── */
.breadcrumb { padding: 12px 16px 0; font-size: .82rem; color: var(--c-text-2); }
.breadcrumb ol { display: flex; gap: 8px; flex-wrap: wrap; }
.breadcrumb ol li::after { content: '›'; margin-left: 8px; }
.breadcrumb ol li:last-child::after { content: ''; }
.breadcrumb ol li:last-child { color: var(--c-text); font-weight: 500; }

/* ── Cookie Banner ── */
.cookie-banner {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000;
  background: var(--c-card); border-top: 1px solid var(--c-border);
  padding: 16px 20px; display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; box-shadow: 0 -4px 16px rgba(0,0,0,.1);
  font-size: .9rem;
}
.cookie-actions { display: flex; gap: 8px; }

/* ── Ad Slots (reserved space to prevent CLS) ── */
.ad-slot { border-radius: var(--r-md); overflow: hidden; }
.ad-slot--sidebar { min-height: 250px; }

/* ── Utility ── */
.hidden { display: none !important; }
[hidden] { display: none !important; }