/* ==========================================================================
   Xiaomi Clima Inteligente — style.css
   ========================================================================== */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f6f7f9;
  --color-bg-dark: #14181f;
  --color-text: #14181f;
  --color-text-muted: #5b6472;
  --color-primary: #ff6900;
  --color-primary-dark: #e05800;
  --color-accent: #1c2b39;
  --color-border: #e6e8ec;
  --color-success: #1a9e5c;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(20, 24, 31, 0.06);
  --shadow-md: 0 8px 24px rgba(20, 24, 31, 0.10);
  --font-display: "Poppins", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  --container: 1140px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { padding-left: 1.2rem; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.2;
  margin: 0 0 0.6em;
  font-weight: 600;
}
h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; color: var(--color-text-muted); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.section { padding: 72px 0; }
.section--alt { background: var(--color-bg-alt); }
.section--dark { background: var(--color-accent); color: #fff; }
.section--dark p { color: #c7d0da; }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.brand--text { font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; letter-spacing: 0.01em; }
.brand-xiaomi { color: var(--color-text); }
.brand-clima { color: var(--color-primary); }

.text-center { text-align: center; }
.section-head { max-width: 640px; margin: 0 auto 40px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn--block { width: 100%; }

/* Top banner */
.top-banner {
  background: var(--color-accent);
  color: #fff;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 8px 12px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
}
.brand small { display: block; font-weight: 400; font-size: 0.72rem; color: var(--color-text-muted); }
.brand-mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-family: var(--font-display);
}
/* Hero em foto cheia (fundo escuro com imagem + overlay) */
.hero--photo {
  position: relative;
  padding: 0;
  color: #fff;
  overflow: hidden;
}
.hero--photo .hero-bg {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 260px 0 40px;
}
.hero--photo .hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20,24,31,0.15) 0%, rgba(20,24,31,0.75) 55%, rgba(20,24,31,0.96) 100%);
}
.hero--photo .container { position: relative; z-index: 2; }
.hero--photo .eyebrow { color: var(--color-primary); }
.hero--photo h1 { color: #fff; }
.hero--photo h1 em { color: var(--color-primary); font-style: normal; }
.hero--photo p { color: #d8dde4; }
.hero--photo .hero-tags .tag {
  background: transparent;
  border-color: rgba(255,255,255,0.35);
  color: #fff;
}
.hero--photo .hero-note { color: #aab2bd; }

/* Menu hamburger (mobile) */
.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 0.88rem;
  font-weight: 500;
}
.nav a:hover { color: var(--color-primary); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--color-text);
}
.nav-dropdown {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 20px 18px;
  border-top: 1px solid var(--color-border);
  background: #fff;
}
.nav-dropdown a { padding: 8px 0; font-size: 0.92rem; font-weight: 500; }
.nav-dropdown.open { display: flex; }

@media (max-width: 900px) {
  .nav { display: none; }
  .nav-toggle { display: block; }
}

/* Barra fixa "Comprar agora" (mobile) */
.sticky-buy-bar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 60;
  padding: 12px 16px;
  background: #fff;
  box-shadow: 0 -4px 16px rgba(0,0,0,0.12);
}
@media (max-width: 640px) {
  .sticky-buy-bar { display: block; }
  body { padding-bottom: 64px; }
  #cta-desktop { display: none; }
}

/* Hero */
.hero {
  padding: 56px 0 40px;
}
.hero--gradient {
  background: linear-gradient(180deg, #fff4ea 0%, #ffffff 55%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 28px;
}
.tag {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-accent);
}
.hero-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.hero-note { font-size: 0.8rem; color: var(--color-text-muted); margin-top: 10px; }

.countdown-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fdeee3;
  color: var(--color-primary-dark);
  border: 1px solid #ffd4ad;
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 18px;
}
.countdown-badge [data-countdown] {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  background: var(--color-primary);
  color: #fff;
  padding: 2px 8px;
  border-radius: 6px;
}

/* Stat strip */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.stat-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.stat-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-primary);
}
.stat-card span { font-size: 0.82rem; color: var(--color-text-muted); }

/* Problem grid */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.problem-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
}
.problem-card .mark {
  display: inline-block;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.feature-card .icon { font-size: 1.6rem; margin-bottom: 12px; display: block; }

/* Comparison table */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 32px;
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.compare-table th, .compare-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  font-size: 0.95rem;
}
.compare-table th { background: var(--color-bg-alt); font-family: var(--font-display); }
.compare-table td.win { color: var(--color-primary); font-weight: 600; }
.compare-table tr:last-child td { border-bottom: none; }

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 36px;
}
.price-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.price-card--highlight {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.price-card .badge {
  position: absolute;
  top: -12px; right: 20px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
}
.price-old {
  text-decoration: line-through;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}
.price-new {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 4px 0 14px;
}
.price-card ul { list-style: none; padding: 0; margin: 0 0 22px; }
.price-card li {
  padding: 6px 0;
  font-size: 0.92rem;
  display: flex;
  gap: 8px;
}
.price-card li::before { content: "✓"; color: var(--color-success); font-weight: 700; }
.stock-note {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 12px;
  text-align: center;
}

/* FAQ */
.faq-list { max-width: 760px; margin: 32px auto 0; }
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 4px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text);
}
.faq-question .plus { transition: transform 0.2s ease; font-size: 1.3rem; color: var(--color-primary); }
.faq-item.open .faq-question .plus { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
  font-size: 0.94rem;
  padding: 0 4px;
}
.faq-item.open .faq-answer { padding-bottom: 16px; }

/* CTA band */
.cta-band {
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
}
.cta-band p { color: #c7d0da; }

/* Footer */
.site-footer {
  background: var(--color-bg-dark);
  color: #aab2bd;
  padding: 48px 0 24px;
  font-size: 0.88rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
@media (max-width: 700px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-grid h4 { color: #fff; font-size: 0.9rem; margin-bottom: 14px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a:hover { color: var(--color-primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.78rem;
}
.payment-note { font-size: 0.72rem; color: #7c8492; }

/* Simple pages (legal, contact, faq, help) */
.simple-page { padding: 56px 0 80px; }
.simple-page h1 { margin-bottom: 6px; }
.simple-page .updated { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 36px; }
.simple-page h2 { font-size: 1.25rem; margin-top: 2em; }
.simple-page ol, .simple-page ul { color: var(--color-text-muted); }
.legal-nav {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 12px;
}
.legal-nav a { display: block; padding: 6px 0; font-size: 0.9rem; }
.legal-nav a.active { color: var(--color-primary); font-weight: 600; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; } }
.form-field { margin-bottom: 16px; }
.form-field label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; }
.form-field input, .form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
}
.contact-info-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 26px;
}
.contact-info-card li { list-style: none; margin-bottom: 14px; }

.help-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.help-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
}