/* =========================================================
   TIM Empresas — Landing
   Paleta TIM: azul #003D7C, vermelho #E60050, amarelo #FFCC00
   ========================================================= */

:root {
  --tim-blue: #003D7C;
  --tim-blue-dark: #00264D;
  --tim-blue-light: #1A5BA6;
  --tim-red: #E60050;
  --tim-yellow: #FFCC00;
  --whatsapp: #25D366;
  --whatsapp-dark: #128C7E;

  --bg: #ffffff;
  --bg-alt: #F5F7FA;
  --text: #0F172A;
  --text-soft: #475569;
  --border: #E2E8F0;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.06), 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.05);
  --shadow-lg: 0 16px 40px rgba(0,0,0,.10), 0 4px 12px rgba(0,0,0,.06);

  --container: 1200px;

  --font: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* =================== RESET =================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.2; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(1.85rem, 4vw, 2.85rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; color: var(--text-soft); }
a { color: var(--tim-blue); text-decoration: none; }
a:hover { color: var(--tim-blue-dark); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* =================== BUTTONS =================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  padding: .8rem 1.25rem;
  font: inherit;
  font-weight: 600;
  font-size: .95rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: transform .12s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }

.btn-sm { padding: .55rem .9rem; font-size: .85rem; }
.btn-lg { padding: 1rem 1.6rem; font-size: 1.05rem; }
.btn-block { width: 100%; }

.btn-primary {
  background: var(--tim-blue);
  color: #fff;
}
.btn-primary:hover { background: var(--tim-blue-dark); color: #fff; }

.btn-secondary {
  background: #fff;
  color: var(--tim-blue);
  border-color: var(--tim-blue);
}
.btn-secondary:hover { background: var(--tim-blue); color: #fff; }

.btn-whatsapp {
  background: var(--whatsapp);
  color: #fff;
}
.btn-whatsapp:hover { background: var(--whatsapp-dark); color: #fff; }

/* =================== HEADER =================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: .8rem;
  padding-bottom: .8rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: var(--tim-blue);
  font-weight: 700;
}
.brand img { height: 36px; width: auto; }
.brand span { font-size: .9rem; color: var(--text-soft); }

.nav { display: flex; gap: 1.5rem; }
.nav a {
  font-weight: 500;
  font-size: .95rem;
  color: var(--text);
}
.nav a:hover { color: var(--tim-blue); }

@media (max-width: 820px) {
  .nav { display: none; }
}

/* =================== HERO =================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--tim-blue) 0%, var(--tim-blue-dark) 60%, #001a36 100%);
  color: #fff;
  padding: 4rem 0 5rem;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(800px 400px at 90% -10%, rgba(255,204,0,.12), transparent 60%),
    radial-gradient(600px 300px at -10% 110%, rgba(230,0,80,.18), transparent 60%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 3rem;
  align-items: center;
}
.hero-text .eyebrow {
  display: inline-block;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.22);
  color: #fff;
  font-size: .78rem;
  letter-spacing: .14em;
  padding: .35rem .75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}
.hero h1 { color: #fff; max-width: 18ch; }
.hero h1 .hl { color: var(--tim-yellow); }
.hero .lead { color: rgba(255,255,255,.85); font-size: 1.1rem; max-width: 50ch; }
.hero-bullets {
  list-style: none;
  margin: 1rem 0 1.8rem;
  padding: 0;
  display: grid;
  gap: .55rem;
}
.hero-bullets li {
  position: relative;
  padding-left: 1.6rem;
  color: rgba(255,255,255,.92);
}
.hero-bullets li::before {
  content: '';
  position: absolute;
  left: 0; top: .55em;
  width: .85rem; height: .85rem;
  background: var(--tim-yellow);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(255,204,0,.18);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; }

/* form card */
.hero-form {
  background: #fff;
  color: var(--text);
  border-radius: var(--radius);
  padding: 1.8rem;
  box-shadow: var(--shadow-lg);
}
.hero-form h2 { color: var(--tim-blue); font-size: 1.4rem; }
.hero-form p { color: var(--text-soft); font-size: .92rem; margin-bottom: 1.25rem; }
.hero-form form { display: grid; gap: .85rem; }
.hero-form label {
  display: grid;
  gap: .25rem;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text);
}
.hero-form input {
  font: inherit;
  font-size: .95rem;
  padding: .7rem .85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
.hero-form input:focus {
  outline: none;
  border-color: var(--tim-blue);
  box-shadow: 0 0 0 3px rgba(0,61,124,.18);
}
.hero-form small {
  font-size: .76rem;
  color: var(--text-soft);
  text-align: center;
}

@media (max-width: 900px) {
  .hero { padding: 2.5rem 0 3rem; }
  .hero-inner { grid-template-columns: 1fr; gap: 2rem; }
}

/* =================== STRIP OFFER =================== */
.strip-offer {
  background: var(--tim-yellow);
  color: var(--tim-blue-dark);
  padding: 1rem 0;
  font-weight: 600;
  text-align: center;
}
.strip-offer strong { font-weight: 800; margin-right: .5rem; }
.strip-offer span { color: var(--tim-blue-dark); opacity: .85; }
@media (max-width: 600px) {
  .strip-offer { font-size: .92rem; }
  .strip-offer strong { display: block; margin: 0 0 .25rem; }
}

/* =================== SECTIONS =================== */
.plans-section { padding: 4rem 0; background: var(--bg); }
.plans-section-alt { background: var(--bg-alt); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 2.5rem; }
.section-head .eyebrow {
  display: inline-block;
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--tim-red);
  font-weight: 700;
  margin-bottom: .5rem;
}
.section-head h2 { color: var(--tim-blue); }

/* =================== PLAN CARDS =================== */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(245px, 1fr));
  gap: 1.5rem;
}
.plan-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform .18s, box-shadow .25s, border-color .2s;
  box-shadow: var(--shadow-sm);
}
.plan-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--tim-blue);
}
.plan-card.featured {
  border-color: var(--tim-blue);
  box-shadow: 0 0 0 3px rgba(0,61,124,.12), var(--shadow-md);
}
.plan-card .badge {
  position: absolute;
  top: -10px; right: 18px;
  background: var(--tim-red);
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  padding: .3rem .65rem;
  border-radius: 999px;
  text-transform: uppercase;
}
.plan-card .plan-name {
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--tim-red);
  font-weight: 700;
  margin-bottom: .35rem;
}
.plan-card .plan-data {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--tim-blue);
  line-height: 1;
  margin: .25rem 0 .15rem;
}
.plan-card .plan-data small {
  display: inline-block;
  font-size: .85rem;
  color: var(--text-soft);
  font-weight: 500;
  margin-right: .35rem;
  vertical-align: middle;
}
.plan-card .plan-price {
  display: flex;
  align-items: baseline;
  gap: .35rem;
  margin: .8rem 0 .5rem;
  color: var(--text);
}
.plan-card .plan-price .currency { font-size: .95rem; font-weight: 600; color: var(--text-soft); }
.plan-card .plan-price .value { font-size: 2rem; font-weight: 800; color: var(--text); }
.plan-card .plan-price .period { font-size: .85rem; color: var(--text-soft); }

.plan-card .plan-tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .8rem;
  color: var(--tim-blue);
  background: rgba(0,61,124,.07);
  border-radius: 999px;
  padding: .35rem .7rem;
  font-weight: 600;
  margin-bottom: 1rem;
  align-self: flex-start;
}
.plan-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: grid;
  gap: .55rem;
  flex: 1;
}
.plan-card li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .92rem;
  color: var(--text);
}
.plan-card li::before {
  content: '';
  position: absolute;
  left: 0; top: .35em;
  width: 1rem; height: 1rem;
  background: var(--whatsapp);
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M9 16.2 4.8 12l-1.4 1.4L9 19l12-12-1.4-1.4z'/></svg>") center / contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M9 16.2 4.8 12l-1.4 1.4L9 19l12-12-1.4-1.4z'/></svg>") center / contain no-repeat;
}
.plan-card .plan-cta { margin-top: auto; }

/* =================== PHONE CTA =================== */
.phone-cta {
  background: linear-gradient(135deg, var(--tim-red) 0%, #B5003F 100%);
  color: #fff;
  padding: 3rem 0;
  text-align: center;
}
.phone-cta h2 { font-size: clamp(2rem, 5vw, 3rem); color: #fff; margin-bottom: .25rem; letter-spacing: -.02em; }
.phone-cta p { color: rgba(255,255,255,.9); margin-bottom: 1.5rem; font-size: 1.05rem; }

/* =================== CLIENTS =================== */
.clients { padding: 3.5rem 0; background: var(--bg-alt); }
.clients .section-head { margin-bottom: 0; }

/* =================== FOOTER CTA =================== */
.footer-cta {
  background: linear-gradient(135deg, var(--tim-blue-dark) 0%, var(--tim-blue) 100%);
  color: #fff;
  padding: 4rem 0;
}
.footer-cta-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.footer-cta h2 { color: #fff; max-width: 26ch; }
.footer-cta .address {
  color: rgba(255,255,255,.85);
  margin-bottom: 1.5rem;
}
@media (max-width: 900px) {
  .footer-cta-inner { grid-template-columns: 1fr; }
}

/* =================== SITE FOOTER =================== */
.site-footer {
  background: #0a1424;
  color: rgba(255,255,255,.7);
  padding: 2rem 0;
  text-align: center;
  font-size: .9rem;
}
.site-footer p { color: inherit; margin: .25rem 0; }
.site-footer a { color: var(--tim-yellow); }