:root{
  --bg-1:#ffffff;
  --card:#ffffff;
  --accent-1:#6c5ce7;
  --accent-2:#00d2ff;
  --muted:#6b7280;
  --success:#10b981;
  --warning:#f59e0b;
  --danger:#ef4444;
  --glass: rgba(255,255,255,0.06);
  --radius:14px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background: linear-gradient(180deg,#071024 0%, #0b1220 100%);
  color: #0b1220;
  -webkit-font-smoothing:antialiased;
  padding:12px;
  display:flex;
  justify-content:center;
  align-items:flex-start;
  font-size:15px;
  line-height:1.35;
}
.app {
  width:100%;
  max-width:760px;
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(255,255,255,0.94));
  border-radius:18px;
  overflow:hidden;
  box-shadow: 0 12px 40px rgba(2,6,23,0.6);
  margin-bottom:24px;
}

/* bagian header */
.header {
  padding: 16px 16px;
  background: linear-gradient(270deg, var(--accent-1), var(--accent-2), #ff7eb3, #6c5ce7);
  background-size: 600% 600%;
  animation: gradientShift 12s ease infinite;
  color: white;
  display: flex;
  gap: 12px;
  align-items: center;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.brand {
  display:flex;
  gap:12px;
  align-items:center;
  flex:1;
}
.logo{
  width:50px;height:50px;border-radius:10px;
  background:linear-gradient(135deg,#ffffff55,transparent);
  display:flex;align-items:center;justify-content:center;font-weight:700;
  box-shadow: 0 6px 18px rgba(0,0,0,0.18);
}
.title{font-weight:700;font-size:1.05rem}
.subtitle{font-size:0.85rem;opacity:0.95}
.header-actions{display:flex;gap:8px}

/* konten utama */
.main{padding:14px}

/* tab navigasi */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.tab{
  flex:1 1 48%;
  padding:10px 12px;
  background:transparent;border-radius:10px;border:1px solid rgba(11,17,34,0.04);
  font-weight:600;text-align:center;color:var(--muted);
  cursor:pointer;user-select:none;
}
.tab.active{background:linear-gradient(90deg,var(--accent-1),var(--accent-2));color:white;box-shadow:0 6px 18px rgba(108,92,231,0.18)}
@media(min-width:720px){ .tab{flex:1 1 24%} }

/* statistik */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.stat{
  background:var(--card);padding:12px;border-radius:10px;text-align:center;box-shadow:0 6px 18px rgba(2,6,23,0.06);
}
.stat .n{font-weight:800;font-size:1.15rem;color:var(--accent-1)}
.stat .label{font-size:12px;color:var(--muted)}

/* pencarian */
.search{display:flex;gap:8px;margin-bottom:12px}
.search input{
  flex:1;padding:10px 12px;border-radius:10px;border:1px solid rgba(11,17,34,0.06);
  background:transparent;font-size:14px;
}

/* daftar barang */
.list{display:grid;gap:10px}
.card{
  display:flex;flex-direction:column;padding:12px;border-radius:12px;background:linear-gradient(180deg,#fff,#fbfdff);
  border:1px solid rgba(11,17,34,0.04);
}
.card .top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.badge{padding:6px 10px;border-radius:999px;font-weight:700;font-size:12px}
.badge.available{background:linear-gradient(90deg,var(--success),#34d399);color:white}
.badge.borrowed{background:linear-gradient(90deg,var(--warning),#f97316);color:#1f2937}
.card h3{margin:8px 0 6px;font-size:1rem}
.meta{color:var(--muted);font-size:13px}

/* tombol dan aksi */
.actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.btn{
  padding:10px 12px;border-radius:10px;border:0;font-weight:700;font-size:13px;cursor:pointer;
  display:inline-flex;gap:8px;align-items:center;justify-content:center;
}
.btn.ghost{background:transparent;border:1px solid rgba(11,17,34,0.06);color:var(--muted)}
.btn.primary{background:linear-gradient(90deg,var(--accent-1),var(--accent-2));color:white}
.btn.danger{background:linear-gradient(90deg,#fb7185,#ef4444);color:white}
.btn.full{flex:1}

/* form */
.form{display:grid;gap:10px}
.input, .select, .file{
  padding:12px;border-radius:10px;border:1px solid rgba(11,17,34,0.06);background:transparent;font-size:14px;
}
.file{display:flex;align-items:center;gap:8px}

/* pratinjau foto */
.preview{position:relative;border-radius:10px;overflow:hidden;margin-top:6px}
.preview img{width:100%;height:auto;display:block}

/* teks kecil */
.note{font-size:12px;color:var(--muted)}
.hr{height:1px;background:linear-gradient(90deg,transparent,#eee,transparent);margin:10px 0;border-radius:2px;padding:0}

/* bagian footer */
.footer{padding:12px;background:linear-gradient(180deg,rgba(11,17,34,0.02),transparent);display:flex;gap:8px;flex-wrap:wrap}
.small{font-size:12px;color:var(--muted)}

/* aksesibilitas focus */
.tab:focus,.btn:focus,input:focus,select:focus{outline: 3px solid rgba(99,102,241,0.14);outline-offset:2px}

/* responsif */
@media(max-width:420px){
  .tab{flex-basis:100%}
}

.btn.active {
  background: linear-gradient(90deg,var(--accent-1),var(--accent-2));
  color: white;
  box-shadow: 0 6px 18px rgba(108,92,231,0.18);
}

.card.available {
  background: linear-gradient(180deg,#fff,#fbfdff);
}

.card.borrowed {
  background: linear-gradient(180deg, #fff7ed, #fde68a); /* oranye lembut */
}

.view {
  opacity: 1;
  transition: opacity 0.35s ease;
}
.view.fade-in {
  opacity: 0;
  animation: fadeIn 0.35s forwards;
}
@keyframes fadeIn {
  to { opacity: 1; }
}

/* container unggah foto */
.photo-upload-container {
    position: relative;
    border: 2px dashed #ddd;
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}
.photo-upload-container:hover {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.05);
}
.photo-upload-container input[type="file"] {
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
    z-index: 2;
}
.upload-placeholder {
    color: #666;
}
.upload-icon {
    font-size: 2.5rem;
    margin-bottom: 5px;
}
.photo-upload-container.has-image .upload-placeholder {
    display: none;
}
.photo-preview img {
    width: 100%;
    height: auto;
    max-height: 200px;
    object-fit: cover;
    border-radius: 8px;
}
.btn-remove-photo {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(220, 53, 69, 0.9);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s ease;
    z-index: 3;
}
.btn-remove-photo:hover {
    background: #dc3545;
    transform: scale(1.05);
}

/* input bulan lebih lebar untuk Riwayat */
.wide-month {
  flex: 1;
  min-width: 220px;
  padding: 12px;
  font-size: 15px;
  border-radius: 12px;
  border: 1px solid rgba(11,17,34,0.08);
}

/* Tombol Ekspor PDF Hijau */
.btn.export-pdf {
  flex: 1;
  background: linear-gradient(90deg, var(--success), #34d399);
  color: white;
  font-weight: 800;
  border-radius: 14px;
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.35);
  font-size: 14px;
  padding: 12px 16px;
  text-align: center;
}
.btn.export-pdf:active {
  transform: scale(0.96);
}

/* Tombol horizontal responsif */
.horizontal-actions {
  display: flex;
  gap: 10px;
  width: 100%;
}

.horizontal-actions .btn {
  flex: 1;
  min-width: 0;
  text-align: center;
  font-size: 15px;
  padding: 14px 0;
  border-radius: 12px;
}

/* Tombol Ekspor (Hijau), Impor (Biru) */
.btn.export {
  background: linear-gradient(90deg, var(--success), #34d399);
  color: white;
  font-weight: 700;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.25);
}

.btn.import {
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
  color: white;
  font-weight: 700;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.25);
}

/* Tombol Tandai dikembalikan di dashboard */
.btn.borrowed-return {
  background: linear-gradient(90deg, var(--warning), #f97316);
  color: white;
  font-weight: 700;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(249, 115, 22, 0.25);
}