/* ===========================================
   WEBSITE KATALOG LAPTOP - RU JINU
   CSS UTAMA - GAYA TIKTOK SHOP MODERN
   Dibuat dengan HTML & CSS Murni - Tanpa JavaScript
   =========================================== */

/* ===========================================
   RESET & BASE STYLES
   Mengatur ulang style default browser dan variabel warna
   =========================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

/* Variabel warna untuk konsistensi desain */
:root {
  --primary-blue: #0077ff; /* Biru utama brand */
  --primary-dark: #121212; /* Warna gelap untuk teks */
  --whatsapp-green: #01ce4c; /* Hijau WhatsApp */
  --light-gray: #f5f5f5; /* Abu-abu terang untuk background */
  --medium-gray: #e0e0e0; /* Abu-abu medium untuk border */
  --dark-gray: #333333; /* Abu-abu gelap untuk teks sekunder */
  --white: #ffffff; /* Putih */
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.1); /* Shadow normal */
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.15); /* Shadow saat hover */
  --transition: all 0.3s ease; /* Transisi halus */
}

/* Scroll halus untuk navigasi antar section */
html {
  scroll-behavior: smooth;
}

/* Style dasar body */
body {
  background-color: var(--white);
  color: var(--dark-gray);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Container untuk membatasi lebar konten */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===========================================
   HEADER & NAVIGATION
   Menu navigasi dan logo
   =========================================== */
/* ===========================================
   HEADER & NAVIGATION STYLING
   Header dengan navigasi dropdown yang elegan
   =========================================== */
header {
  background: linear-gradient(
    180deg,
    var(--white) 0%,
    rgba(255, 255, 255, 0.98) 100%
  );
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--medium-gray);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  min-height: 70px;
}

/* Style logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  transition: var(--transition);
}

.logo:hover h1 {
  color: #0055cc;
}

.logo h1 {
  color: var(--primary-blue);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin: 0;
}

.logo span {
  color: var(--dark-gray);
  font-weight: 700;
}

/* Menu navigasi */
.nav-links {
  display: flex;
  gap: 35px;
  list-style: none;
  align-items: center;
}

.nav-links li {
  position: relative;
}

.nav-links a {
  text-decoration: none;
  color: var(--dark-gray);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 0;
  position: relative;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a:hover {
  color: var(--primary-blue);
}

/* Style untuk menu aktif */
.nav-links a.active {
  color: var(--primary-blue);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-blue) 0%, #0055cc 100%);
  border-radius: 2px;
}

/* Dropdown styling */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  cursor: pointer;
}

.dropdown-toggle i {
  font-size: 0.8rem;
  transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-toggle i {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--white);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding: 10px 0;
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  margin-top: 10px;
  border: 1px solid var(--medium-gray);
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 12px 20px;
  color: var(--dark-gray);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  font-size: 0.9rem;
}

.dropdown-menu a:first-child {
  border-radius: 10px 10px 0 0;
}

.dropdown-menu a:last-child {
  border-radius: 0 0 10px 10px;
}

.dropdown-menu a:hover {
  background-color: var(--light-gray);
  color: var(--primary-blue);
  padding-left: 24px;
}

/* ===========================================
   MAIN CONTENT AREA
   Area konten utama semua halaman
   =========================================== */
main {
  flex: 1;
  padding: 40px 0;
}

/* Judul halaman */
.page-title {
  text-align: center;
  margin-bottom: 40px;
}

.page-title h1 {
  font-size: 2.5rem;
  color: var(--primary-dark);
  margin-bottom: 10px;
}

.page-title p {
  color: #666;
  font-size: 1.1rem;
}

/* ===========================================
   HERO SECTION
   Bagian hero/jumbotron di halaman beranda
   =========================================== */
.hero {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #0055cc 100%);
  color: var(--white);
  padding: 80px 0;
  border-radius: 20px;
  margin-bottom: 60px;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  opacity: 0.9;
}

/* Tombol Call-to-Action */
.cta-button {
  display: inline-block;
  background-color: var(--white);
  color: var(--primary-blue);
  padding: 15px 35px;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 50px;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

/* ===========================================
   FEATURES SECTION
   Bagian fitur/keunggulan toko
   =========================================== */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.feature-card {
  background-color: var(--white);
  padding: 30px;
  border-radius: 15px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: var(--primary-blue);
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--primary-dark);
}

/* ===========================================
   PRODUCTS SECTION
   Grid produk untuk halaman katalog
   =========================================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

/* Card produk */
.product-card {
  background-color: var(--white);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

/* Gambar produk */
.product-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 2px solid var(--medium-gray);
}

/* Informasi produk */
.product-info {
  padding: 20px;
}

.product-fo {
  width: 100%;
  text-align: center;
}

/* Badge kategori */
.product-category {
  display: inline-block;
  background-color: var(--light-gray);
  color: var(--primary-blue);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 10px;
}

/* Nama produk */
.product-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary-dark);
}

/* Harga produk */
.product-price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 15px;
}

/* Spesifikasi produk */
.product-specs {
  list-style: none;
  margin-bottom: 20px;
  font-size: 0.9rem;
  color: #666;
}

.product-specs li {
  margin-bottom: 5px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.product-specs li i {
  color: var(--primary-blue);
}

/* Tombol WhatsApp untuk produk */
.whatsapp-button {
  display: block;
  width: 100%;
  background-color: var(--whatsapp-green);
  color: var(--white);
  text-align: center;
  padding: 12px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  transition: var(--transition);
}

.whatsapp-button:hover {
  background-color: #128c7e;
}

/* ===========================================
   CATEGORY FILTER
   Filter kategori di halaman katalog
   =========================================== */

/* Hidden checkbox untuk toggle */
.category-toggle-checkbox {
  display: none;
}

/* Wrapper untuk kategori */
.category-filter-wrapper {
  margin-bottom: 50px;
}

/* Tombol toggle kategori */
.category-toggle-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, #0055cc 100%);
  color: var(--white);
  padding: 12px 28px;
  border-radius: 25px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(0, 119, 255, 0.25);
  border: none;
  margin-bottom: 15px;
}

.category-toggle-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 119, 255, 0.35);
}

.toggle-icon {
  font-size: 0.9rem;
  transition: transform 0.3s ease;
}

/* State ketika checkbox dicheck (menu terbuka) */
.category-toggle-checkbox:checked ~ .category-filter {
  display: flex;
  animation: slideDown 0.3s ease-out;
}

.category-toggle-checkbox:checked ~ .category-toggle-button .toggle-icon {
  transform: rotate(180deg);
}

/* Style kategori filter (tersembunyi secara default) */
.category-filter {
  display: none;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px;
  background-color: var(--light-gray);
  border-radius: 15px;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.category-link {
  background-color: var(--white);
  color: var(--dark-gray);
  padding: 12px 24px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  border: 2px solid transparent;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.category-link i {
  font-size: 1.1rem;
}

.category-link:hover {
  background-color: var(--white);
  color: var(--primary-blue);
  border-color: var(--primary-blue);
  box-shadow: 0 4px 12px rgba(0, 119, 255, 0.2);
  transform: translateY(-2px);
}

.category-link.active {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #0055cc 100%);
  color: var(--white);
  border-color: var(--primary-blue);
  box-shadow: 0 6px 20px rgba(0, 119, 255, 0.3);
  font-weight: 700;
}

/* ===========================================
   ABOUT PAGE STYLES
   Style khusus halaman tentang
   =========================================== */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-section {
  background-color: var(--white);
  padding: 40px;
  border-radius: 15px;
  box-shadow: var(--shadow);
  margin-bottom: 40px;
}

.about-section h2 {
  color: var(--primary-blue);
  margin-bottom: 20px;
  font-size: 1.8rem;
}

.about-section h3 {
  color: var(--dark-gray);
  margin-top: 25px;
  margin-bottom: 15px;
  font-size: 1.3rem;
}

.about-section ul {
  list-style-position: inside;
  margin-left: 20px;
}

.about-section li {
  margin-bottom: 10px;
}

/* ===========================================
   CONTACT PAGE STYLES
   Style khusus halaman kontak
   =========================================== */

/* Layout utama kontak */
.contact-simple {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  max-width: 800px;
  margin: 0 auto;
}

/* Box informasi kontak */
.contact-info-simple {
  background-color: var(--white);
  padding: 40px;
  border-radius: 15px;
  box-shadow: var(--shadow);
}

.contact-info-simple h2 {
  color: var(--primary-blue);
  margin-bottom: 30px;
  font-size: 1.8rem;
  text-align: center;
}

/* Daftar detail kontak */
.contact-details-simple {
  list-style: none;
}

.contact-details-simple li {
  margin-bottom: 25px;
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

/* Ikon kontak */
.contact-icon-simple {
  font-size: 1.2rem;
  color: var(--white);
  width: 40px;
  height: 40px;
  background-color: var(--primary-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Box WhatsApp CTA */
.whatsapp-cta-simple {
  background: linear-gradient(135deg, var(--whatsapp-green) 0%, #128c7e 100%);
  color: var(--white);
  padding: 40px;
  border-radius: 15px;
  text-align: center;
}

.whatsapp-cta-simple h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.whatsapp-cta-simple p {
  margin-bottom: 25px;
  font-size: 1.1rem;
}

/* Tombol WhatsApp */
.whatsapp-button-simple {
  background-color: var(--white);
  color: var(--whatsapp-green);
  padding: 15px 35px;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 50px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.whatsapp-button-simple:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-hover);
}

/* ===========================================
   FORM STYLES
   Style untuk form kontak
   =========================================== */
.contact-form-simple {
  background-color: var(--white);
  padding: 40px;
  border-radius: 15px;
  box-shadow: var(--shadow);
  margin-top: 40px;
}

.contact-form-simple h2 {
  color: var(--primary-blue);
  margin-bottom: 30px;
  font-size: 1.8rem;
  text-align: center;
}

/* Grup form */
.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--dark-gray);
}

/* Input form */
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid var(--medium-gray);
  border-radius: 8px;
  font-size: 1rem;
  transition: var(--transition);
}

/* Focus state untuk input */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 119, 255, 0.1);
}

/* Textarea khusus */
.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* Tombol submit */
.submit-button {
  background-color: var(--primary-blue);
  color: var(--white);
  border: none;
  padding: 15px 35px;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.submit-button:hover {
  background-color: #0055cc;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* ===========================================
   FOOTER
   Style untuk footer website
   =========================================== */
footer {
  background-color: var(--primary-dark);
  color: var(--white);
  padding: 40px 0;
  margin-top: 60px;
}

/* Layout footer */
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
}

.footer-section h3 {
  color: var(--primary-blue);
  margin-bottom: 20px;
  font-size: 1.3rem;
}

/* Link footer */
.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #ccc;
  text-decoration: none;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--white);
  padding-left: 5px;
}

/* Copyright */
.copyright {
  text-align: center;
  padding-top: 30px;
  margin-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #999;
}

/* ===========================================
   RESPONSIVE DESIGN
   Media queries untuk tampilan mobile
   =========================================== */

/* Hidden checkbox untuk toggle menu */
.nav-toggle {
  display: none;
}

/* Hamburger menu - tersembunyi di desktop */
.hamburger-menu {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 6px;
  padding: 8px;
}

.hamburger-menu span {
  width: 25px;
  height: 3px;
  background-color: var(--dark-gray);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* Tablet (maksimal 768px) */
@media (max-width: 768px) {
  /* Tampilkan hamburger menu */
  .hamburger-menu {
    display: flex;
  }

  nav {
    position: relative;
    flex-wrap: wrap;
  }

  /* Sembunyikan nav-links secara default */
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--white);
    flex-direction: column;
    gap: 0;
    padding: 20px 0;
    border-top: 1px solid var(--medium-gray);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  }

  /* Tampilkan nav-links ketika checkbox checked */
  .nav-toggle:checked ~ .nav-links {
    display: flex;
  }

  /* Animate hamburger menu */
  .nav-toggle:checked ~ .hamburger-menu span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
  }

  .nav-toggle:checked ~ .hamburger-menu span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle:checked ~ .hamburger-menu span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }

  /* Style nav links untuk mobile */
  .nav-links li {
    border-bottom: 1px solid var(--light-gray);
    padding: 0;
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .nav-links a {
    display: block;
    padding: 15px 20px;
    color: var(--dark-gray);
    font-size: 0.95rem;
  }

  .nav-links a:hover {
    background-color: var(--light-gray);
  }

  .nav-links a.active::after {
    display: none;
  }

  .nav-links a.active {
    background-color: rgba(0, 119, 255, 0.1);
  }

  /* Dropdown menu mobile */
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background-color: var(--light-gray);
    margin: 0;
    border: none;
    border-radius: 0;
    padding: 0;
    display: none;
  }

  .dropdown-toggle {
    width: 100%;
    justify-content: space-between;
  }

  /* Dropdown toggle animation */
  .dropdown-toggle i {
    transition: transform 0.3s ease;
  }

  .dropdown:hover .dropdown-menu {
    display: block;
  }

  .dropdown:hover .dropdown-toggle i {
    transform: rotate(180deg);
  }

  .dropdown-menu a {
    padding: 12px 20px 12px 40px;
    font-size: 0.9rem;
    border-radius: 0;
  }

  .dropdown-menu a:hover {
    background-color: var(--white);
    padding-left: 44px;
  }

  /* Ukuran font lebih kecil untuk mobile */
  .hero h2 {
    font-size: 2rem;
  }

  .page-title h1 {
    font-size: 2rem;
  }

  /* Padding lebih kecil untuk mobile */
  .about-section,
  .contact-info-simple,
  .contact-form-simple {
    padding: 25px;
  }

  .whatsapp-cta-simple {
    padding: 30px 20px;
  }

  .hero {
    padding: 50px 0;
  }
}

/* Mobile kecil (maksimal 480px) */
@media (max-width: 480px) {
  /* Menu navigasi vertikal */
  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .nav-links a {
    padding: 12px 20px;
    font-size: 0.9rem;
  }

  /* Ukuran font lebih kecil */
  .hero h2 {
    font-size: 1.8rem;
  }

  /* Grid menjadi 1 kolom */
  .features {
    grid-template-columns: 1fr;
  }

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

  .logo h1 {
    font-size: 1.6rem;
  }
}