* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Inter, sans-serif;
}

body {
  background: #ffffff;
  color: #111;
}

/* =====================
   HEADER
===================== */
.header {
  display: flex;
  justify-content: space-between;
  padding: 20px 80px;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: bold;
}

.logo span {
  color: #2563eb;
}

nav a {
  margin-right: 20px;
  text-decoration: none;
  color: #333;
}

.cta {
  padding: 10px 20px;
  background: #2563eb;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

/* =====================
   HERO
===================== */
.hero {
  display: flex;
  padding: 80px;
  align-items: center;
  gap: 40px;
}

.hero-text {
  max-width: 500px;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  margin-bottom: 30px;
  color: #444;
}

.primary {
  background: #2563eb;
  color: white;
  padding: 14px 24px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.secondary {
  background: transparent;
  border: 1px solid #2563eb;
  color: #2563eb;
  padding: 14px 24px;
  margin-left: 10px;
  border-radius: 6px;
  cursor: pointer;
}

/* =====================
   FEATURES
===================== */
.features {
  padding: 80px;
  text-align: center;
}

.features h2 {
  font-size: 36px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}

/* Feature card base */
.feature {
  position: relative;
  min-height: 280px;
  padding: 30px;
  border-radius: 12px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: white;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

/* Dark overlay */
.feature::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
}

/* Text above overlay */
.feature h3,
.feature p {
  position: relative;
  z-index: 1;
}

.feature h3 {
  font-size: 22px;
  margin-bottom: 10px;
}

.feature p {
  font-size: 16px;
  line-height: 1.4;
}

/* Background images */
.features-grid .feature:nth-child(1) {
  background-image: url("assets/feature-ptt.jpg");
}

.features-grid .feature:nth-child(2) {
  background-image: url("assets/feature-channels.jpg");
}

.features-grid .feature:nth-child(3) {
  background-image: url("assets/feature-history.jpg");
}

/* =====================
   USE CASES
===================== */
.usecases {
  padding: 80px;
  text-align: center;
}

.usecases h2 {
  font-size: 36px;
}

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.usecases-grid div {
  padding: 30px;
  border: 1px solid #eee;
  border-radius: 10px;
  font-weight: 500;
}

/* =====================
   CTA FINAL
===================== */
.cta-final {
  background: #2563eb;
  color: white;
  text-align: center;
  padding: 80px;
}

.cta-final h2 {
  font-size: 36px;
  margin-bottom: 20px;
}

/* =====================
   FOOTER
===================== */
.footer {
  padding: 30px;
  text-align: center;
  background: #f9f9f9;
  color: #555;
}

/* =====================
   RESPONSIVE
===================== */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    text-align: center;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .usecases-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* =====================
   USE CASES WITH IMAGES
===================== */

.usecases-grid div {
  position: relative;
  min-height: 220px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: white;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 20px;
  border-radius: 12px;
  overflow: hidden;
  font-size: 18px;
}

/* Dark overlay */
.usecases-grid div::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

/* Text above overlay */
.usecases-grid div {
  z-index: 1;
}

.usecases-grid div span,
.usecases-grid div {
  position: relative;
  z-index: 1;
}

/* Background images per item */
.usecases-grid div:nth-child(1) {
  background-image: url("assets/usecase-security.jpg");
}

.usecases-grid div:nth-child(2) {
  background-image: url("assets/usecase-logistics.jpg");
}

.usecases-grid div:nth-child(3) {
  background-image: url("assets/usecase-transportation.jpg");
}

.usecases-grid div:nth-child(4) {
  background-image: url("assets/usecase-emergency.jpg");
}

/* =====================
   PRICING
===================== */
.pricing {
  padding: 100px 80px;
  text-align: center;
  background: #f9fafb;
}

.pricing h2 {
  font-size: 36px;
  margin-bottom: 10px;
}

.pricing-subtitle {
  color: #555;
  margin-bottom: 50px;
}

.pricing-table {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.pricing-card {
  background: white;
  border-radius: 14px;
  padding: 40px 30px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.pricing-card h3 {
  font-size: 22px;
  margin-bottom: 10px;
}

.price {
  font-size: 36px;
  font-weight: bold;
  margin: 20px 0;
}

.price span {
  font-size: 16px;
  font-weight: normal;
  color: #666;
}

.pricing-card ul {
  list-style: none;
  margin: 30px 0;
  padding: 0;
}

.pricing-card ul li {
  margin-bottom: 12px;
  color: #444;
}

.pricing-card button {
  margin-top: 20px;
}

/* Highlighted plan */
.pricing-card.featured {
  border: 2px solid #2563eb;
  transform: scale(1.05);
}

/* Responsive */
@media (max-width: 1024px) {
  .pricing-table {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: none;
  }
}