/* =============================================
   TEKET — Consultoria de IA
   styles.css — Design v2 (Apple-inspired, human, bold)
   ============================================= */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #ffffff;
  --bg-soft:    #f5f5f7;
  --bg-dark:    #0a0a0f;
  --bg-dark-2:  #111118;
  --accent:     #1d3f8a;
  --accent-h:   #162f6a;
  --accent-warm:#ff4d00;
  --text:       #1d1d1f;
  --text-soft:  #6e6e73;
  --text-inv:   #f5f5f7;
  --text-inv-s: #ababba;
  --border:     #d2d2d7;
  --border-dark:#2a2a35;
  --radius:     16px;
  --radius-sm:  10px;
  --max-w:      1100px;
  --t:          0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, 'SF Pro Display', 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* --- Layout --- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

section { padding: 112px 0; }

/* --- Typography --- */
h1, h2, h3 { line-height: 1.1; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.8rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { font-size: 1.25rem; font-weight: 600; }

.label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.label-dark { color: var(--accent-warm); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--t);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 24px rgba(91, 92, 230, 0.3);
}
.btn-primary:hover {
  background: var(--accent-h);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(91, 92, 230, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-dark {
  background: #fff;
  color: var(--text);
}
.btn-dark:hover {
  background: var(--bg-soft);
  transform: translateY(-2px);
}

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: var(--t);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 96px;
  width: auto;
  display: block;
  mix-blend-mode: multiply;
}

.logo-img--footer {
  height: 32px;
  filter: brightness(0) invert(1);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 0 100px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--border);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-soft);
  margin-bottom: 40px;
}

.hero-eyebrow-dot {
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  animation: blink 2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-content { max-width: 760px; }

.hero h1 {
  color: var(--text);
  margin-bottom: 28px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent), var(--accent-warm));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--text-soft);
  max-width: 580px;
  margin-bottom: 48px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 24px;
}

.hero-trust {
  font-size: 0.82rem;
  color: var(--text-soft);
}

.hero-trust strong { color: var(--text); }

/* =============================================
   SERVICES
   ============================================= */
.services {
  background: var(--bg-soft);
}

.services-header {
  max-width: 600px;
  margin-bottom: 64px;
}

.services-header h2 { margin-bottom: 16px; }
.services-header p { color: var(--text-soft); font-size: 1.1rem; }

.services-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  transition: var(--t);
  cursor: default;
}

.service-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 40px rgba(91, 92, 230, 0.1);
  transform: translateY(-4px);
}

/* Layout das cards: 2 grandes + 3 pequenas */
.service-card:nth-child(1),
.service-card:nth-child(2) { grid-column: span 6; }
.service-card:nth-child(3),
.service-card:nth-child(4),
.service-card:nth-child(5) { grid-column: span 4; }

.service-num {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 24px;
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--text);
}

.service-card p {
  color: var(--text-soft);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* =============================================
   HOW IT WORKS — seção escura
   ============================================= */
.how-it-works {
  background: var(--bg-dark);
  color: var(--text-inv);
}

.how-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: end;
  margin-bottom: 80px;
}

.how-header h2 { color: var(--text-inv); }

.how-header-right p {
  color: var(--text-inv-s);
  font-size: 1.05rem;
  line-height: 1.7;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.step {
  background: var(--bg-dark-2);
  border-radius: var(--radius);
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
  transition: var(--t);
}

.step:hover { background: #161620; }

.step::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-warm));
  opacity: 0;
  transition: var(--t);
}

.step:hover::before { opacity: 1; }

.step-num {
  font-size: 3.5rem;
  font-weight: 800;
  color: #2a2a3a;
  line-height: 1;
  margin-bottom: 32px;
  letter-spacing: -0.04em;
}

.step h3 {
  font-size: 1.2rem;
  color: var(--text-inv);
  margin-bottom: 12px;
}

.step p {
  color: var(--text-inv-s);
  font-size: 0.95rem;
  line-height: 1.65;
}

.how-cta {
  margin-top: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.how-cta-note {
  font-size: 0.85rem;
  color: var(--text-inv-s);
}

/* =============================================
   ABOUT
   ============================================= */
.about {
  background: var(--bg);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 96px;
  align-items: center;
}

.about-text-block .label { display: block; }
.about-text-block h2 { margin-bottom: 32px; }

.about-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-body p {
  color: var(--text-soft);
  font-size: 1.05rem;
  line-height: 1.75;
}

.about-body p strong { color: var(--text); }

.about-visual-block {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about-stat {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  transition: var(--t);
}

.about-stat:hover { border-color: var(--accent); }

.about-stat-value {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 8px;
}

.about-stat-label {
  font-size: 0.9rem;
  color: var(--text-soft);
}

.about-highlight {
  background: var(--bg-dark);
  border-radius: var(--radius);
  padding: 36px;
  color: var(--text-inv);
}

.about-highlight p {
  font-size: 1.1rem;
  line-height: 1.65;
  color: var(--text-inv-s);
}

.about-highlight strong { color: var(--text-inv); }

/* =============================================
   CONTACT
   ============================================= */
.contact {
  background: var(--bg-soft);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-info h2 { margin-bottom: 20px; }

.contact-info-sub {
  color: var(--text-soft);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 48px;
}

.contact-perks {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg);
}

.perk {
  padding: 24px 28px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.perk:last-child { border-bottom: none; }

.perk strong {
  font-size: 0.95rem;
  color: var(--text);
}

.perk span {
  font-size: 0.85rem;
  color: var(--text-soft);
}

/* Form */
.form-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--bg-soft);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--t);
  outline: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  background: var(--bg);
  box-shadow: 0 0 0 4px rgba(91, 92, 230, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 110px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--border);
}

.form-submit {
  width: 100%;
  padding: 17px;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  border-radius: 100px;
}

.form-microcopy {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-soft);
  margin-top: 14px;
}

/* Form states */
.form-success {
  display: none;
  text-align: center;
  padding: 48px 24px;
}

.form-success.visible { display: block; }

.form-success-mark {
  width: 64px; height: 64px;
  background: #e8f8f0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 1.6rem;
}

.form-success h3 {
  font-size: 1.3rem;
  color: var(--text);
  margin-bottom: 10px;
}

.form-success p {
  color: var(--text-soft);
  font-size: 0.95rem;
}

.field-error {
  font-size: 0.78rem;
  color: #d32f2f;
  margin-top: 5px;
  display: none;
}
.field-error.visible { display: block; }
.form-group input.invalid,
.form-group textarea.invalid {
  border-color: #d32f2f;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--bg-dark);
  color: var(--text-inv);
  padding: 48px 0;
  border-top: 1px solid var(--border-dark);
}

.footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer .logo-img--footer { filter: brightness(0) invert(1); }
.footer-copy { font-size: 0.85rem; color: var(--text-inv-s); }

/* =============================================
   ANIMATIONS
   ============================================= */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 960px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .service-card:nth-child(n) { grid-column: span 1; }

  .how-header { grid-template-columns: 1fr; gap: 24px; }
  .steps { grid-template-columns: 1fr; gap: 2px; }

  .about-inner { grid-template-columns: 1fr; gap: 56px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 640px) {
  section { padding: 80px 0; }
  .container { padding: 0 20px; }

  .services-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }

  .form-card { padding: 28px 24px; }

  .footer .container { flex-direction: column; text-align: center; }
}