/* ── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --green: #059669; --green-light: #ecfdf5;
  --blue: #2563eb; --blue-light: #eff6ff;
  --red: #dc2626; --red-light: #fef2f2;
  --amber: #d97706; --amber-light: #fffbeb;
  --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: 220px;
  --radius: 12px;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gray-50); color: var(--gray-900); font-size: 14px;
  line-height: 1.5;
}

/* ── Login Screen ──────────────────────────────────────────── */
.login-screen {
  position: fixed; inset: 0; background: var(--gray-900);
  display: flex; align-items: center; justify-content: center; z-index: 1000;
}
.login-card {
  background: #fff; border-radius: 20px; padding: 48px 40px 40px;
  width: 100%; max-width: 400px; text-align: center;
  box-shadow: 0 25px 60px rgba(0,0,0,.5);
}
.login-logo { margin-bottom: 32px; }
.login-logo h1 { font-size: 22px; font-weight: 800; margin-top: 12px; color: var(--gray-900); }
.login-logo p { font-size: 13px; color: var(--gray-400); margin-top: 4px; }
.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-form .form-group { text-align: left; }
.login-form .form-group label { font-size: 12px; color: var(--gray-500); font-weight: 600; margin-bottom: 4px; display: block; }
.password-input-wrap input {
  width: 100%; padding: 10px 14px; border: 1px solid var(--gray-200); border-radius: 10px;
  font-size: 14px; outline: none; transition: border-color .15s;
}
.password-input-wrap input:focus { border-color: var(--green); }
.login-btn { width: 100%; justify-content: center; padding: 10px; font-size: 14px; border-radius: 10px; }
.login-error { font-size: 12px; color: var(--red); min-height: 18px; }

/* ── Layout ───────────────────────────────────────────────── */
#app { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar); background: var(--gray-900); color: #fff;
  display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; z-index: 10;
}
.main-content { margin-left: var(--sidebar); flex: 1; display: flex; flex-direction: column; }

/* ── Sidebar ──────────────────────────────────────────────── */
.sidebar-header { padding: 20px; border-bottom: 1px solid rgba(255,255,255,.08); }
.logo { display: flex; align-items: center; gap: 10px; color: #34d399; font-weight: 700; font-size: 17px; }
.sidebar-nav { flex: 1; padding: 12px; display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px;
  color: var(--gray-400); text-decoration: none; font-size: 13px; font-weight: 500; transition: all .15s;
}
.nav-item:hover { background: rgba(255,255,255,.06); color: #fff; }
.nav-item.active { background: #059669; color: #fff; }
.sidebar-footer { padding: 16px 20px; border-top: 1px solid rgba(255,255,255,.08); }
.status-indicator { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--gray-400); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; }
.status-dot.online { background: #34d399; box-shadow: 0 0 6px #34d39988; }
.status-dot.offline { background: var(--gray-500); }

/* ── Topbar ───────────────────────────────────────────────── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 28px; background: #fff; border-bottom: 1px solid var(--gray-200);
}
.topbar h1 { font-size: 18px; font-weight: 700; }
.charger-count { font-size: 12px; color: var(--gray-400); }

/* ── Content ──────────────────────────────────────────────── */
.content-body { flex: 1; padding: 24px 28px; overflow-y: auto; }
.page { display: none; }
.page.active { display: block; }

/* ── Stats ────────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 28px; }
.stat-card {
  background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 4px;
}
.stat-label { font-size: 12px; color: var(--gray-400); font-weight: 500; text-transform: uppercase; letter-spacing: .5px; }
.stat-value { font-size: 28px; font-weight: 700; }
.text-green { color: var(--green); }
.text-blue  { color: var(--blue); }
.text-red   { color: var(--red); }
.text-amber { color: var(--amber); }

/* ── Sections ─────────────────────────────────────────────── */
.section-title { font-size: 13px; font-weight: 600; color: var(--gray-700); margin-bottom: 12px; }

/* ── Table ────────────────────────────────────────────────── */
.table-container {
  background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); overflow-x: auto;
}
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th {
  text-align: left; padding: 12px 16px; font-size: 11px; font-weight: 600; color: var(--gray-400);
  text-transform: uppercase; letter-spacing: .5px; border-bottom: 1px solid var(--gray-100);
  white-space: nowrap;
}
.table td { padding: 12px 16px; border-bottom: 1px solid var(--gray-50); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--gray-50); }
.empty-state { padding: 48px 16px; text-align: center; color: var(--gray-400); font-size: 13px; }

/* ── Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 100px;
  font-size: 11px; font-weight: 600;
}
.badge-idle     { background: var(--gray-100); color: var(--gray-600); }
.badge-charging { background: var(--blue-light); color: var(--blue); }
.badge-fault    { background: var(--red-light); color: var(--red); }
.badge-online   { background: var(--green-light); color: var(--green); }
.badge-offline  { background: var(--gray-100); color: var(--gray-500); }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 8px;
  font-size: 12px; font-weight: 600; border: none; cursor: pointer; transition: all .15s; white-space: nowrap;
}
.btn-sm { padding: 4px 10px; font-size: 11px; }
.btn-green  { background: var(--green); color: #fff; }
.btn-green:hover  { background: #047857; }
.btn-blue   { background: var(--blue); color: #fff; }
.btn-blue:hover   { background: #1d4ed8; }
.btn-red    { background: var(--red); color: #fff; }
.btn-red:hover    { background: #b91c1c; }
.btn-amber   { background: var(--amber); color: #fff; }
.btn-amber:hover   { background: #b45309; }
.btn-outline { background: transparent; border: 1px solid var(--gray-200); color: var(--gray-600); }
.btn-outline:hover { background: var(--gray-50); }
.btn:disabled { opacity: .4; cursor: not-allowed; }

/* ── Drawer (Slide-in) ────────────────────────────────────── */
.drawer-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 100;
  display: flex; justify-content: flex-end;
}
.drawer {
  background: #fff; width: 100%; max-width: 720px; height: 100vh;
  display: flex; flex-direction: column; box-shadow: -8px 0 30px rgba(0,0,0,.15);
  animation: slideIn .25s ease-out;
}
@keyframes slideIn { from { transform: translateX(100%); } to { transform: translateX(0); } }
.drawer-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px; border-bottom: 1px solid var(--gray-100); flex-shrink: 0;
}
.drawer-header h2 { font-size: 16px; font-weight: 700; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--gray-400); padding: 4px; border-radius: 6px; }
.modal-close:hover { color: var(--gray-700); background: var(--gray-100); }

.drawer-tabs {
  display: flex; gap: 0; padding: 0 24px; border-bottom: 1px solid var(--gray-100);
  overflow-x: auto; flex-shrink: 0;
}
.drawer-tab {
  padding: 12px 16px; font-size: 12px; font-weight: 600; color: var(--gray-400);
  cursor: pointer; border-bottom: 2px solid transparent; white-space: nowrap; transition: all .15s;
}
.drawer-tab:hover { color: var(--gray-700); }
.drawer-tab.active { color: var(--green); border-bottom-color: var(--green); }

.drawer-body { padding: 24px; overflow-y: auto; flex: 1; }

/* ── Config Form ──────────────────────────────────────────── */
.config-section { margin-bottom: 24px; }
.config-section:last-child { margin-bottom: 0; }
.config-section-title {
  font-size: 11px; font-weight: 700; color: var(--gray-400); text-transform: uppercase;
  letter-spacing: .8px; margin-bottom: 12px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 10px; }
.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group label { font-size: 12px; color: var(--gray-500); font-weight: 500; }
.form-group input, .form-group select, .form-group textarea {
  padding: 8px 12px; border: 1px solid var(--gray-200); border-radius: 8px;
  font-size: 13px; outline: none; transition: border-color .15s; font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--green); }
.form-group input[type="number"] { font-family: monospace; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }

/* ── Charger Detail Info ──────────────────────────────────── */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.detail-card {
  background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: 10px; padding: 16px;
}
.detail-card h3 { font-size: 11px; color: var(--gray-400); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 8px; }
.detail-value { font-size: 20px; font-weight: 700; }

/* ── Progress bar (OTA) ───────────────────────────────────── */
.progress-bar {
  width: 100%; height: 8px; background: var(--gray-100); border-radius: 100px; overflow: hidden; margin: 8px 0;
}
.progress-fill { height: 100%; background: var(--green); border-radius: 100px; transition: width .3s; }

/* ── Helper ────────────────────────────────────────────────── */
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full { width: 100%; }
.text-xs { font-size: 11px; }
.text-sm { font-size: 12px; }
.text-muted { color: var(--gray-400); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --sidebar: 60px; }
  .sidebar-header { padding: 14px; }
  .logo-text, .nav-item span, .sidebar-footer .status-label { display: none; }
  .nav-item { justify-content: center; padding: 10px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .topbar { padding: 12px 16px; }
  .content-body { padding: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .drawer { max-width: 100vw; }
}