/* ============================================================
   Lab Manajemen Energi ITB — Main CSS
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:      #1a56db;
  --primary-dark: #1344b8;
  --primary-light:#e8f0fe;
  --success:      #057a55;
  --success-bg:   #def7ec;
  --warning:      #92400e;
  --warning-bg:   #fef3c7;
  --danger:       #c81e1e;
  --danger-bg:    #fde8e8;
  --info:         #1e429f;
  --info-bg:      #e1effe;

  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  --sidebar-w: 220px;
  --radius:    8px;
  --radius-lg: 12px;
  --shadow:    0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);
}

html { font-size: 16px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 18px; border-radius: var(--radius);
  font-size: .875rem; font-weight: 500; cursor: pointer;
  border: 1.5px solid transparent; transition: all .15s;
  text-decoration: none; white-space: nowrap;
}
.btn-primary  { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); text-decoration: none; color:#fff; }
.btn-outline  { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); text-decoration:none; }
.btn-ghost    { background: transparent; color: var(--gray-600); border-color: var(--gray-300); }
.btn-ghost:hover { background: var(--gray-100); text-decoration:none; }
.btn-sm { padding: 6px 12px; font-size: .8125rem; }
.btn-lg { padding: 12px 28px; font-size: 1rem; }

/* ── Alerts ──────────────────────────────────────────────── */
.alert {
  padding: 12px 16px; border-radius: var(--radius);
  margin-bottom: 16px; font-size: .875rem; border-left: 4px solid;
}
.alert-success { background: var(--success-bg); color: var(--success); border-color: var(--success); }
.alert-danger  { background: var(--danger-bg);  color: var(--danger);  border-color: var(--danger); }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-color: var(--warning); }
.alert-info    { background: var(--info-bg);    color: var(--info);    border-color: var(--info); }

/* ── Status badges ───────────────────────────────────────── */
.status-badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .4px;
}
.status-badge.status-lg { font-size: .875rem; padding: 6px 16px; }
.status-pending     { background: var(--warning-bg); color: var(--warning); }
.status-disetujui   { background: var(--info-bg);    color: var(--info); }
.status-dipinjam    { background: #fef3c7; color: #92400e; }
.status-dikembalikan{ background: var(--success-bg); color: var(--success); }
.status-ditolak     { background: var(--danger-bg);  color: var(--danger); }

/* ── Tables ──────────────────────────────────────────────── */
.detail-table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.detail-table th {
  width: 38%; text-align: left; padding: 8px 12px 8px 0;
  color: var(--gray-500); font-weight: 500;
  border-bottom: 1px solid var(--gray-100); vertical-align: top;
}
.detail-table td {
  padding: 8px 0; color: var(--gray-800);
  border-bottom: 1px solid var(--gray-100); word-break: break-word;
}
.muted { color: var(--gray-500); }
.req { color: var(--danger); }

/* ── Forms ───────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; margin-bottom: 6px;
  font-size: .875rem; font-weight: 500; color: var(--gray-700);
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 9px 12px; border: 1.5px solid var(--gray-300);
  border-radius: var(--radius); font-size: .875rem; font-family: inherit;
  transition: border-color .15s, box-shadow .15s; background: #fff; color: var(--gray-900);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,86,219,.12);
}
.form-group textarea { resize: vertical; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
.form-grid .full { grid-column: 1 / -1; }

/* ── File Upload ─────────────────────────────────────────── */
.file-upload { position: relative; border: 2px dashed var(--gray-300);
  border-radius: var(--radius); transition: border-color .15s; background: var(--gray-50); }
.file-upload:hover { border-color: var(--primary); }
.file-upload input[type=file] {
  position: absolute; inset: 0; width: 100%; height: 100%;
  opacity: 0; cursor: pointer; z-index: 2;
}
.file-upload-ui {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; padding: 28px 16px; gap: 4px; pointer-events: none;
}
.file-icon  { font-size: 28px; }
.file-text  { font-size: .875rem; font-weight: 500; color: var(--gray-700); }
.file-hint  { font-size: .75rem; color: var(--gray-400); }
.file-preview { padding: 8px 12px; font-size: .8125rem; color: var(--primary); display: none; }

/* ── Checkbox ────────────────────────────────────────────── */
.checkbox-label {
  display: flex; gap: 12px; align-items: flex-start; cursor: pointer; font-size: .875rem;
}
.checkbox-label input { width: 16px; height: 16px; margin-top: 2px; flex-shrink: 0; cursor: pointer; }
.disclaimer-box { background: var(--primary-light); padding: 16px; border-radius: var(--radius); }
.form-actions  { display: flex; justify-content: flex-end; gap: 12px; margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--gray-200); }

/* ── Navbar (user) ───────────────────────────────────────── */
.navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px; height: 60px; background: #fff;
  border-bottom: 1px solid var(--gray-200); box-shadow: var(--shadow);
  position: sticky; top: 0; z-index: 100;
}
.navbar-brand {
  display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit;
}
.brand-icon  { font-size: 24px; }
.brand-name  { display: block; font-weight: 700; font-size: 1rem; color: var(--gray-900); }
.brand-sub   { display: block; font-size: .75rem; color: var(--gray-500); }
.navbar-links { display: flex; gap: 24px; }
.navbar-links a { font-size: .875rem; color: var(--gray-600); font-weight: 500; }
.navbar-links a:hover { color: var(--primary); text-decoration: none; }

/* ── Hero (landing) ──────────────────────────────────────── */
.hero { max-width: 960px; margin: 60px auto 0; padding: 0 24px; }
.hero-content { text-align: center; margin-bottom: 60px; }
.hero-content h1 {
  font-size: 2.5rem; font-weight: 800; color: var(--gray-900);
  line-height: 1.15; margin-bottom: 16px;
}
.hero-sub { font-size: 1rem; color: var(--gray-500); margin-bottom: 32px; line-height: 1.6; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.info-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.info-card {
  background: #fff; border-radius: var(--radius-lg); padding: 28px 24px;
  box-shadow: var(--shadow); text-align: center;
}
.info-icon { font-size: 32px; margin-bottom: 12px; }
.info-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; }
.info-card p { font-size: .875rem; color: var(--gray-500); line-height: 1.5; }
.footer { text-align: center; padding: 40px; color: var(--gray-400); font-size: .8125rem; }

/* ── Form wrapper (user forms) ───────────────────────────── */
.form-wrapper { max-width: 760px; margin: 32px auto; padding: 0 16px 60px; }
.form-card {
  background: #fff; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md); padding: 36px;
}
.form-header { margin-bottom: 28px; }
.form-header h2 { font-size: 1.375rem; font-weight: 700; margin-bottom: 4px; }
.form-header p { font-size: .875rem; color: var(--gray-500); }
.form-section { margin-bottom: 28px; padding-bottom: 28px; border-bottom: 1px solid var(--gray-100); }
.form-section:last-of-type { border-bottom: none; }
.section-title {
  font-size: .9375rem; font-weight: 600; color: var(--gray-700);
  margin-bottom: 16px; display: flex; align-items: center; gap: 8px;
}
.section-title::before {
  content: ''; display: inline-block; width: 3px; height: 16px;
  background: var(--primary); border-radius: 2px;
}

/* ── Success card ────────────────────────────────────────── */
.center-wrap { display: flex; justify-content: center; align-items: center; min-height: calc(100vh - 60px); padding: 24px; }
.success-card {
  background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  padding: 48px 40px; text-align: center; max-width: 480px; width: 100%;
}
.success-icon { font-size: 52px; margin-bottom: 20px; }
.success-card h2 { font-size: 1.375rem; font-weight: 700; margin-bottom: 8px; }
.success-card p { color: var(--gray-500); margin-bottom: 24px; }
.nomor-box {
  background: var(--primary-light); border-radius: var(--radius); padding: 18px 20px;
  display: flex; flex-direction: column; align-items: center; gap: 8px; margin-bottom: 12px;
}
.nomor-label { font-size: .75rem; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
.nomor-value { font-size: 1.375rem; font-weight: 800; letter-spacing: 2px; color: var(--gray-900); }
.btn-copy {
  background: var(--primary); color: #fff; border: none; border-radius: 6px;
  padding: 5px 14px; font-size: .8125rem; cursor: pointer; font-weight: 500;
}
.nomor-note { font-size: .8125rem; color: var(--warning); margin-bottom: 24px; }
.success-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── Cek Status ──────────────────────────────────────────── */
.status-result { margin-top: 8px; }

/* ── Info banner ─────────────────────────────────────────── */
.info-banner {
  background: var(--info-bg); color: var(--info); padding: 12px 16px;
  border-radius: var(--radius); font-size: .875rem; margin-bottom: 20px;
  border-left: 4px solid var(--primary);
}

/* ── Admin Layout ────────────────────────────────────────── */
.admin-layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: var(--sidebar-w); background: var(--gray-900); color: #fff;
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
  flex-shrink: 0;
}
.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 16px; border-bottom: 1px solid rgba(255,255,255,.1);
}
.sidebar-logo .brand-name { color: #fff; font-size: .9375rem; }
.sidebar-logo .brand-sub  { color: rgba(255,255,255,.5); font-size: .7rem; }
.sidebar-nav { flex: 1; padding: 12px 0; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px; font-size: .875rem; color: rgba(255,255,255,.7);
  text-decoration: none; transition: all .15s; position: relative;
}
.nav-item:hover, .nav-item.active {
  background: rgba(255,255,255,.08); color: #fff; text-decoration: none;
}
.nav-item.active { border-left: 3px solid var(--primary); padding-left: 13px; }
.nav-icon { font-size: 16px; width: 20px; text-align: center; }
.nav-badge {
  margin-left: auto; background: var(--danger); color: #fff;
  font-size: .7rem; font-weight: 700; padding: 1px 7px; border-radius: 10px;
}
.sidebar-footer {
  padding: 16px; border-top: 1px solid rgba(255,255,255,.1);
  display: flex; flex-direction: column; gap: 8px;
}
.admin-nama { font-size: .8125rem; color: rgba(255,255,255,.6); }
.btn-logout {
  font-size: .8125rem; color: rgba(255,255,255,.5); text-align: left;
}
.btn-logout:hover { color: #fff; text-decoration: none; }

/* Admin Main */
.admin-main { flex: 1; padding: 28px 32px; overflow-x: auto; }
.admin-topbar {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px;
}
.topbar-left { display: flex; align-items: center; gap: 16px; }
.page-title { font-size: 1.375rem; font-weight: 700; color: var(--gray-900); }
.back-btn { font-size: .875rem; color: var(--gray-500); }
.back-btn:hover { color: var(--primary); }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: 12px; margin-bottom: 24px; }
.stat-card {
  background: #fff; border-radius: var(--radius); padding: 16px;
  box-shadow: var(--shadow); text-decoration: none; display: flex;
  flex-direction: column; align-items: center; border: 1.5px solid transparent; transition: all .15s;
}
.stat-card:hover { border-color: var(--primary); transform: translateY(-1px); text-decoration:none; }
.stat-num   { font-size: 1.75rem; font-weight: 800; color: var(--gray-900); line-height: 1; }
.stat-label { font-size: .75rem; color: var(--gray-500); margin-top: 4px; font-weight: 500; }
.stat-pending   .stat-num { color: var(--warning); }
.stat-disetujui .stat-num { color: var(--info); }
.stat-dipinjam  .stat-num { color: #92400e; }
.stat-kembali   .stat-num { color: var(--success); }
.stat-ditolak   .stat-num { color: var(--danger); }

/* Toolbar */
.table-toolbar {
  display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap;
}
.search-form { display: flex; gap: 8px; flex: 1; flex-wrap: wrap; }
.search-input {
  flex: 1; min-width: 200px; padding: 8px 12px; border: 1.5px solid var(--gray-300);
  border-radius: var(--radius); font-size: .875rem; font-family: inherit;
}
.search-input:focus { outline: none; border-color: var(--primary); }
.filter-select {
  padding: 8px 12px; border: 1.5px solid var(--gray-300);
  border-radius: var(--radius); font-size: .875rem; background: #fff; cursor: pointer;
  font-family: inherit;
}
.table-count { font-size: .8125rem; color: var(--gray-500); white-space: nowrap; }

/* Data Table */
.table-wrap { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; }
.data-table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.data-table thead { background: var(--gray-50); }
.data-table th {
  padding: 12px 16px; text-align: left; font-size: .8125rem;
  font-weight: 600; color: var(--gray-600); text-transform: uppercase;
  letter-spacing: .3px; border-bottom: 1px solid var(--gray-200);
}
.data-table td { padding: 13px 16px; border-bottom: 1px solid var(--gray-100); vertical-align: middle; }
.data-table tbody tr:hover { background: var(--gray-50); }
.data-table tbody tr:last-child td { border-bottom: none; }
.nomor-code {
  font-family: 'SF Mono', 'Fira Code', monospace; font-size: .8125rem;
  background: var(--gray-100); padding: 3px 8px; border-radius: 4px; color: var(--gray-700);
}
.alat-cell { max-width: 200px; color: var(--gray-600); }
.date-cell { white-space: nowrap; color: var(--gray-600); font-size: .8125rem; }
.empty-row { text-align: center; padding: 40px; color: var(--gray-400); }
.badge { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: .75rem; font-weight: 600; }
.badge-strata { background: var(--primary-light); color: var(--primary); }

/* Pagination */
.pagination { display: flex; gap: 4px; justify-content: center; margin-top: 20px; }
.page-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: var(--radius);
  font-size: .875rem; color: var(--gray-600); background: #fff;
  border: 1.5px solid var(--gray-200); text-decoration: none; transition: all .15s;
}
.page-btn:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.page-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* Login */
.login-page { background: var(--gray-100); }
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.login-card {
  background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  padding: 48px 40px; width: 100%; max-width: 400px;
}
.login-logo { font-size: 40px; text-align: center; margin-bottom: 12px; }
.login-card h2 { text-align: center; font-size: 1.375rem; font-weight: 700; margin-bottom: 4px; }
.login-sub { text-align: center; font-size: .8125rem; color: var(--gray-500); margin-bottom: 28px; }

/* Admin Detail */
.detail-layout { display: grid; grid-template-columns: 1fr 1.3fr; gap: 24px; align-items: start; }
.detail-card {
  background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow);
  padding: 20px 24px; margin-bottom: 16px;
}
.detail-card:last-child { margin-bottom: 0; }
.card-title { font-size: .9375rem; font-weight: 600; color: var(--gray-700); margin-bottom: 14px; }
.nomor-card { text-align: center; background: linear-gradient(135deg,#1a56db 0%,#1344b8 100%); color: #fff; }
.nomor-big  { font-size: 1.375rem; font-weight: 800; letter-spacing: 2px; margin-bottom: 4px; }
.nomor-sub  { font-size: .8125rem; opacity: .7; }
.nomor-date { font-size: .75rem; opacity: .6; margin-top: 6px; }
.card-kembali { border-left: 4px solid var(--success); }
.status-form { display: flex; gap: 8px; align-items: center; }
.badge-kondisi { padding: 3px 10px; border-radius: 20px; font-size: .75rem; font-weight: 600; }
.badge-baik        { background: var(--success-bg); color: var(--success); }
.badge-rusak_ringan{ background: var(--warning-bg); color: var(--warning); }
.badge-rusak_berat { background: var(--danger-bg);  color: var(--danger); }
.badge-hilang      { background: var(--gray-200);   color: var(--gray-700); }

/* Doc Viewer */
.doc-viewer-card { position: sticky; top: 20px; }
.doc-tabs { display: flex; gap: 4px; margin-bottom: 16px; flex-wrap: wrap; }
.doc-tab {
  padding: 7px 14px; border-radius: var(--radius); border: 1.5px solid var(--gray-200);
  font-size: .8125rem; font-weight: 500; cursor: pointer; background: #fff;
  color: var(--gray-600); transition: all .15s; font-family: inherit;
}
.doc-tab:hover  { border-color: var(--primary); color: var(--primary); }
.doc-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.doc-viewer.hidden { display: none; }
.doc-iframe { width: 100%; height: 540px; border: none; border-radius: var(--radius); background: var(--gray-100); }
.doc-img    { width: 100%; max-height: 540px; object-fit: contain; border-radius: var(--radius); border: 1px solid var(--gray-200); }
.doc-actions { margin-top: 10px; display: flex; gap: 8px; }
.doc-empty  { padding: 60px; text-align: center; color: var(--gray-400); font-size: .875rem; }

/* Notifikasi */
.notif-list { display: flex; flex-direction: column; gap: 10px; }
.notif-item { background: var(--gray-50); border-radius: var(--radius); padding: 10px 14px; font-size: .8125rem; }
.notif-tipe { font-weight: 600; color: var(--gray-700); margin-bottom: 4px; text-transform: capitalize; }
.notif-status { color: var(--gray-600); display: flex; align-items: center; gap: 6px; margin-top: 2px; }
.notif-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.notif-dot.sent   { background: var(--success); }
.notif-dot.unsent { background: var(--gray-300); }

/* Responsive */
@media (max-width: 1100px) {
  .detail-layout { grid-template-columns: 1fr; }
  .doc-viewer-card { position: static; }
  .stats-grid { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 768px) {
  .admin-layout { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; flex-direction: row; }
  .sidebar-nav { display: flex; padding: 0; overflow-x: auto; }
  .nav-item { white-space: nowrap; padding: 12px 14px; }
  .sidebar-footer { display: none; }
  .admin-main { padding: 16px; }
  .info-cards { grid-template-columns: 1fr; }
  .form-grid  { grid-template-columns: 1fr; }
  .form-grid .full { grid-column: 1; }
  .hero-content h1 { font-size: 1.75rem; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
}