/* PROBLEMS SECTION */
.problem {
  background: #f9fafb;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0px 20px 16px;
}

.problem-section {
  max-width: 1100px;
  width: 100%;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
  animation: fadeUp 0.6s ease both;
}

.section-header h2 {
  font-size: 48px;
  color: #111827;
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-header p {
  font-size: 22px;
  color: #6b7280;
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.65;
}

/* Carousel */
.carousel-wrapper {
  overflow: hidden;
}

.carousel-track {
  display: flex;
  gap: 24px;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

/* Cards */
.card {
  flex: 0 0 calc((100% - 48px) / 3);
  border-radius: 24px;
  padding: 32px 28px 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.11);
}

.card--blue {
  background: linear-gradient(
     40deg,
    #9db2ff 0%,
    #d7e0ff 40%,
    #f6f8ff 70%,
    #ffffff 100%
  );
}
.card--pink {
  background: linear-gradient(
    40deg,
  #fb7185 0%,
    #fecdd3 40%,
    #fff1f3 70%,
    #ffffff 100%
  );
}
.card--purple {
  background: linear-gradient(
  40deg,
    #a78bfa 0%,
    #ddd6fe 40%,
    #f5f3ff 70%,
    #ffffff 100%
  );
}
.card--teal {
  background: linear-gradient(
    to top right,
    #5eead4 0%,
    #99f6e4 40%,
    #f0fdfb 100%
  );
}
.card--amber {
  background: linear-gradient(
    to top right,
    #fbbf24 0%,
    #fde68a 40%,
    #fffbeb 100%
  );
}
.card--rose {
  background: linear-gradient(
    to top right,
    #fb7185 0%,
    #fecaca 40%,
    #fff1f2 100%
  );
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.card--blue .card-icon {
  background: #4f6ef7;
}
.card--pink .card-icon {
  background: #f24f7a;
}
.card--purple .card-icon {
  background: #7c4dff;
}
.card--teal .card-icon {
  background: #0d9488;
}
.card--amber .card-icon {
  background: #d97706;
}
.card--rose .card-icon {
  background: #e11d48;
}

.card-icon svg {
  width: 26px;
  height: 26px;
  fill: white;
}

.card-title {
  font-weight: 600;
  font-size: 22px;
  color: #111827;
  margin-bottom: 12px;
  line-height: 1.35;
}

.card-desc {
  font-size: 16px;
  color: #4b5563;
  line-height: 1.7;
  margin-bottom: 24px;
  flex: 1;
}

.card-visual {
  position: relative;
  border-radius: 16px 16px 0 0;
  overflow: hidden;
  height: 200px;
}

.card-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.tag {
  position: absolute;
  background: white;
  border-radius: 999px;
  padding: 7px 14px 7px 10px;
  font-size: 13px;
  font-weight: 500;
  color: #111827;
  display: flex;
  align-items: center;
  gap: 7px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
  white-space: nowrap;
}

.tag-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.card--blue .tag-dot {
  background: #4f6ef7;
}
.card--pink .tag-dot {
  background: #f24f7a;
}
.card--purple .tag-dot {
  background: #7c4dff;
}
.card--teal .tag-dot {
  background: #0d9488;
}
.card--amber .tag-dot {
  background: #d97706;
}
.card--rose .tag-dot {
  background: #e11d48;
}

.tag-tl {
  top: 12px;
  left: 12px;
}
.tag-br {
  bottom: 12px;
  right: 12px;
}

/* Dots */
.dots {
  display: flex;
  justify-content: center;
  gap: 7px;
  margin-top: 24px;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #d1d5db;
  cursor: pointer;
  transition:
    background 0.3s,
    transform 0.3s,
    width 0.3s;
}

.dot.active {
  background: #4f6ef7;
  width: 22px;
  border-radius: 4px;
}

/* Nav */
.nav-arrows {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

.nav-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid #e5e7eb;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    background 0.2s,
    border-color 0.2s,
    transform 0.15s;
}

.nav-btn:hover {
  background: #4f6ef7;
  border-color: #4f6ef7;
  transform: scale(1.08);
}

.nav-btn:hover svg {
  stroke: white;
}
.nav-btn:active {
  transform: scale(0.94);
}

.nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none !important;
}

.nav-btn svg {
  width: 16px;
  height: 16px;
  stroke: #6b7280;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 0.2s;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 700px) {
  .card {
    flex: 0 0 100%;
  }
  .card-title {
    font-size: 18px;
  }
  .section-header h2 {
    font-size: 24px;
  }
  .section-header p {
    font-size: 16px;
  }
}