:root {
  --utama: #2563eb;
  --gelap: #1e293b;
  --terang: #f8fafc;
  --abu: #e2e8f0;
  --sukses: #10b981;
  --peringatan: #f59e0b;
  --bahaya: #ef4444;
  --bayangan: 0 4px 20px rgba(0,0,0,0.08);
  --radius: 16px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Roboto, sans-serif;
}

body {
  background: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 100%);
  min-height: 100vh;
  color: var(--gelap);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

/* NAVBAR */
.navbar {
  background: white;
  padding: 0.9rem 1.5rem;
  box-shadow: var(--bayangan);
  position: sticky;
  top: 0;
  z-index: 999;
}

.navbar .logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--utama);
}

.nav-menu {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.8rem;
}

.nav-menu a {
  padding: 0.6rem 1rem;
  border-radius: 10px;
  font-weight: 500;
  transition: all 0.25s;
  display: block;
}

.nav-menu a.aktif, .nav-menu a:hover {
  background: var(--utama);
  color: white;
}

/* KONTEN */
.konten {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

h2 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--gelap);
  border-bottom: 3px solid var(--utama);
  display: inline-block;
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.25rem;
  margin: 1.5rem 0 1rem;
}

/* FORM & KOTAK */
.kotak-login, .form-pembayaran, .kartu-laporan {
  background: white;
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--bayangan);
  max-width: 450px;
  margin: 2rem auto;
}

.form-grup {
  margin-bottom: 1.2rem;
}

.form-grup label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #475569;
}

.form-grup input, .form-grup select, .form-grup textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 2px solid var(--abu);
  border-radius: 12px;
  font-size: 1rem;
  transition: border-color 0.25s;
}

.form-grup input:focus, .form-grup select:focus, .form-grup textarea:focus {
  outline: none;
  border-color: var(--utama);
}

/* TOMBOL */
.btn {
  background: var(--utama);
  color: white;
  border: none;
  padding: 0.9rem 1.2rem;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(37,99,235,0.3);
}

.btn-kecil {
  padding: 0.5rem 0.8rem;
  font-size: 0.9rem;
}

.btn-bahaya {
  background: var(--bahaya);
}

.btn-sukses {
  background: var(--sukses);
}

.tab-btn {
  background: #e2e8f0;
  color: #475569;
}

.tab-btn.aktif {
  background: var(--utama);
  color: white;
}

/* GRID PRODUK */
.grid-produk {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.kartu-produk {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--bayangan);
  transition: transform 0.3s;
}

.kartu-produk:hover {
  transform: translateY(-5px);
}

.kartu-produk img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: #e2e8f0;
}

.kartu-produk h3 {
  padding: 0 1rem;
  margin: 1rem 0 0.5rem;
}

.kartu-produk p {
  padding: 0 1rem;
  color: #64748b;
}

.kartu-produk .harga {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--utama);
  margin: 0.5rem 0;
}

.kartu-produk .btn {
  margin: 1rem;
  width: calc(100% - 2rem);
}

/* LAPORAN */
.grid-laporan {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.kartu-laporan {
  max-width: 100%;
  margin: 0;
  text-align: center;
}

.angka {
  font-size: 2rem;
  font-weight: 700;
  color: var(--utama);
  margin-top: 0.5rem;
}

/* KOTAK PESANAN */
.kotak-pesanan {
  background: white;
  padding: 1.2rem;
  border-radius: var(--radius);
  box-shadow: var(--bayangan);
  margin-bottom: 1rem;
}

/* RESPONSIVE HP */
@media (max-width: 480px) {
  .konten { padding: 1rem; }
  .kotak-login, .form-pembayaran { padding: 1.5rem; margin: 1rem; }
  .grid-produk { grid-template-columns: 1fr; }
  .nav-menu { justify-content: center; }
}