body {
  background-color: #080b14;
  font-family: 'DM Sans', sans-serif;
  color: #e8eaf2;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 2rem;
}

.tec-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 860px;
}

.back-btn {
  align-self: flex-start;
  color: #8890a8;
  font-size: 0.9rem;
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color 0.2s;
}

.back-btn:hover {
  color: #e8eaf2;
}

.tec-header {
  text-align: center;
  margin-bottom: 3rem;
}

.tec-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #fff 0%, #8890a8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tec-subtitle {
  color: #8890a8;
  font-size: 1.05rem;
  margin-top: 0.5rem;
  font-weight: 300;
}

/* Seções por categoria */
.tec-section {
  width: 100%;
  margin-bottom: 2rem;
}

.tec-section__label {
  font-size: 0.78rem;
  font-weight: 500;
  color: #8890a8;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.tec-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}

/* Card de tecnologia individual */
.tec-card {
  background: #0d1528;
  border: 1px solid #1e3060;
  border-radius: 14px;
  padding: 1.2rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
  text-align: center;
}

.tec-card:hover {
  transform: translateY(-4px);
}

/* Cores de hover por acento */
.tec-card--blue:hover  { border-color: #4a8fff; box-shadow: 0 0 28px #4a8fff22; }
.tec-card--orange:hover { border-color: #ff8c38; box-shadow: 0 0 28px #ff8c3822; }
.tec-card--purple:hover { border-color: #9b59ff; box-shadow: 0 0 28px #9b59ff22; }
.tec-card--green:hover  { border-color: #3fffa2; box-shadow: 0 0 28px #3fffa222; }

.tec-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tec-card__icon svg {
  width: 22px;
  height: 22px;
}

.tec-card__icon--blue   { background: #1a2d5a; }
.tec-card__icon--orange { background: #2a1500; }
.tec-card__icon--purple { background: #1f1040; }
.tec-card__icon--green  { background: #0d2e1e; }

.tec-card__name {
  font-family: 'Syne', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
}

.tec-card__level {
  font-size: 0.75rem;
  color: #8890a8;
  font-weight: 400;
}

@media (max-width: 600px) {
  body { padding: 1.25rem; }
  .tec-grid { grid-template-columns: repeat(2, 1fr); }
}