:root {
  --bg-gradient-start: #e6f0ff;
  --bg-gradient-end: #ffffff;
  --card-bg: rgba(245, 250, 255, 0.85);
  --card-border: rgba(0, 115, 230, 0.15);
  --text-primary: #0a2540;
  --text-secondary: #2d4b6e;
  --btn-text: #ffffff;
  --shadow-color: rgba(0, 115, 230, 0.2);
  --footer-text: #4a5f7a;
  --skeleton-base: #b8d5ff;
  --skeleton-highlight: #d9e9ff;
  --primary: #0073e6;
  --primary-dark: #005bb5;
  --accent: #6f4ef0;
  --accent-dark: #5a3cc0;
  --teal: #20c0b0;
  --gradient-main: linear-gradient(135deg, #0073e6, #4a90e2, #20c0b0);
  --gradient-hover: linear-gradient(135deg, #005bb5, #3a7bd5, #18a090);
  --price-color: #0073e6;
  --price-usd-color: #0b8b5c;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  background: linear-gradient(145deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
  font-family: 'Roboto', sans-serif;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
  color: var(--text-primary);
  position: relative;
  min-height: 100vh;
  transition: background 0.3s ease;
}

.container, footer, .navbar {
  position: relative;
  z-index: 1;
}

.navbar {
  background: var(--card-bg) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px var(--shadow-color);
  border-bottom: 1px solid var(--card-border);
}

.brand-name {
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn-primary-custom {
  background: var(--gradient-main);
  border: none;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  color: var(--btn-text) !important;
  position: relative;
  overflow: hidden;
  font-weight: 500;
}

.btn-primary-custom::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}

.btn-primary-custom:hover {
  background: var(--gradient-hover);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 25px var(--shadow-color);
}

.btn-primary-custom:hover::before {
  left: 100%;
}

.btn-outline-primary {
  color: var(--primary);
  border: 2px solid var(--primary);
  background: transparent;
  transition: all 0.3s ease;
  font-weight: 500;
}

.btn-outline-primary:hover {
  background: var(--gradient-main);
  color: var(--btn-text) !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--shadow-color);
  border-color: transparent;
}

.btn-outline-secondary {
  color: var(--text-secondary);
  border: 2px solid var(--text-secondary);
  background: transparent;
  transition: all 0.3s ease;
  font-weight: 500;
}

.btn-outline-secondary:hover {
  background: var(--text-secondary);
  color: white !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--shadow-color);
}

.card {
  border: none;
  border-radius: 1.5rem;
  box-shadow: 0 15px 35px -10px var(--shadow-color);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  color: var(--text-primary);
  border: 1px solid var(--card-border);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.5s ease;
  z-index: 1;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 30px 45px -15px var(--shadow-color);
}

.card:hover::before {
  left: 100%;
}

.card i {
  transition: transform 0.3s ease;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card:hover i {
  transform: scale(1.2) rotate(5deg);
}

.hero-section {
  padding: 3rem 0 4rem;
  animation: fadeInUp 1s ease;
}

.text-primary-custom {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-section .lead {
  color: var(--text-secondary);
}

.placeholder {
  background-color: var(--skeleton-base) !important;
  opacity: 0.6;
  border-radius: 0.375rem;
}

.placeholder-wave .placeholder {
  animation: placeholder-shimmer 1.5s linear infinite;
  background: linear-gradient(90deg, var(--skeleton-base) 0%, var(--skeleton-highlight) 50%, var(--skeleton-base) 100%);
  background-size: 200% 100%;
}

@keyframes placeholder-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

#skeleton-wrapper, #content-wrapper {
  transition: opacity 0.5s ease;
}

.carousel-inner {
  height: 400px;
  border-radius: 1.5rem;
  background-color: var(--skeleton-base);
  box-shadow: 0 20px 40px -10px var(--shadow-color);
  overflow: hidden;
}

.carousel-item {
  height: 100%;
}

.carousel-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 5s ease;
}

.carousel-item.active img {
  animation: zoomEffect 5s ease;
}

@keyframes zoomEffect {
  0% { transform: scale(1); }
  100% { transform: scale(1.1); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeInUp 0.8s ease backwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }
.card:nth-child(5) { animation-delay: 0.5s; }
.card:nth-child(6) { animation-delay: 0.6s; }

.skeleton-carousel {
  height: 400px;
  border-radius: 1.5rem;
  box-shadow: 0 20px 40px -10px var(--shadow-color);
}

footer {
  background: var(--card-bg);
  color: var(--footer-text);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--card-border);
}

footer a {
  transition: all 0.3s ease;
  display: inline-block;
  color: var(--footer-text) !important;
}

footer a:hover {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transform: translateX(5px);
}

footer .fs-4 {
  transition: all 0.3s ease;
  color: var(--footer-text);
}

footer .fs-4:hover {
  transform: translateY(-5px) scale(1.2);
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav .nav-link {
  position: relative;
  transition: all 0.3s ease;
  cursor: pointer;
  color: var(--text-primary) !important;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after {
  width: 80%;
}

.navbar-nav .nav-link:hover {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav .nav-link.active {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 500;
}

.navbar-nav .nav-link.active::after {
  width: 80%;
  background: var(--gradient-main);
}

section[id], footer[id] {
  scroll-margin-top: 80px;
}

@media (max-width: 768px) {
  .carousel-inner {
    height: 250px;
  }
  .skeleton-carousel {
    height: 250px;
  }
}

@media (max-width: 576px) {
  .container {
    padding-left: 12px;
    padding-right: 12px;
  }
  .display-4 {
    font-size: 2.2rem;
  }
  .hero-section {
    padding: 2rem 0 2rem;
    text-align: center;
  }
  .btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    width: 100%;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
  }
  .navbar-brand {
    font-size: 1.5rem !important;
  }
  .card {
    margin-bottom: 1rem;
    padding: 1.25rem;
  }
  .card .btn {
    width: 100%;
  }
  section[id], footer[id] {
    scroll-margin-top: 70px;
  }
  .card i.fs-1 {
    font-size: 2.2rem !important;
  }
  .card p {
    font-size: 0.85rem;
  }
  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }
  .card h4, .card h3 {
    font-size: 1.2rem;
  }
  .navbar-brand {
    font-size: 1.3rem !important;
  }
  section.py-5 {
    padding-top: 2rem !important;
    padding-bottom: 2rem !important;
  }
  footer a {
    font-size: 0.85rem;
  }
  .row.g-4 {
    --bs-gutter-y: 1rem;
  }
  .hero-section .display-4 {
    font-size: 1.8rem;
  }
  .hero-section .lead {
    font-size: 1rem;
  }
}

.bi-code-slash {
  animation: float 3s ease-in-out infinite;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0px); }
}

.shadow-soft {
  box-shadow: 0 10px 40px -15px var(--shadow-color);
}

.shadow-hover {
  transition: box-shadow 0.3s ease;
}

.shadow-hover:hover {
  box-shadow: 0 20px 50px -15px var(--shadow-color);
}

.placeholder-wave {
  position: relative;
  overflow: hidden;
}

#content-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.footer {
  margin-top: auto;
}

.navbar.sticky-top {
  position: sticky;
  top: 0;
  z-index: 1020;
}

.main-title,
h1.display-4 {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  text-shadow: none;
}

.server-category-title {
  font-size: 1.75rem;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-top: 2rem;
  margin-bottom: 1.5rem;
}

.price-rp {
  color: var(--price-color);
  font-weight: 700;
  font-size: 1.3rem;
}

.price-usd {
  color: var(--price-usd-color);
  font-weight: 700;
  font-size: 1.3rem;
}

.server-specs {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.spec-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  text-align: left;
  font-size: 0.9rem;
}

.spec-item i {
  font-size: 1.2rem;
  color: var(--primary);
  min-width: 1.5rem;
}

.card .server-specs {
  display: flex;
  flex-direction: column;
  align-items: stretch;
}