:root {
  --bg: #0b1220;
  --panel: #111827;
  --panel-2: #1f2937;

  --text: #f9fafb;
  --muted: #9ca3af;

  --accent: #22c55e;
  --accent-2: #16a34a;

  --border: rgba(255,255,255,0.08);

  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top, #0f172a 0%, #0b1220 45%),
    var(--bg);

  color: var(--text);
}

.app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background: rgba(10, 12, 18, 0.8);
  border-right: 1px solid var(--border);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.sidebar h1 {
  margin: 0;
  font-size: 28px;
}

.sidebar p {
  margin: 8px 0 0;
  color: var(--muted);
}

.menu {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 30px;
}

.menu-btn,
.btn {
  border: none;
  border-radius: 14px;
  padding: 14px 16px;
  cursor: pointer;
  font-weight: 700;
  transition: 0.25s ease;
}

.menu-btn {
  background: var(--panel);
  color: var(--text);
  text-align: left;
}

.menu-btn:hover,
.menu-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.content {
  flex: 1;
  padding: 28px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  gap: 16px;
}

.topbar h2 {
  margin: 0 0 6px;
  font-size: 30px;
}

.topbar p,
.topbar-box {
  color: var(--muted);
}

.topbar-box {
  background: rgba(255,255,255,0.04);
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 22px;
}

.card,
.panel {
  background: rgba(22, 26, 34, 0.9);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.card {
  padding: 20px;
}

.card h3,
.panel h3 {
  margin: 0 0 12px;
  color: #fff;
}

.card p {
  margin: 0;
  font-size: 26px;
  font-weight: 700;
}

.panel {
  padding: 22px;
  margin-bottom: 20px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.form-grid input,
.form-grid select,
.form-grid textarea {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 14px;
  padding: 14px 16px;
  outline: none;
}

.form-grid textarea {
  min-height: 100px;
  resize: vertical;
  grid-column: span 2;
}

.form-grid .btn {
  grid-column: span 2;
}

.btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-secondary {
  background: #2a3040;
}

.list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.item {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

.item-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 12px;
}

.item small {
  color: var(--muted);
}

.item strong {
  display: block;
  margin-bottom: 4px;
}

@media (max-width: 980px) {

  .sidebar {
    position: fixed;
    top: 0;
    left: -280px;

    width: 260px;
    height: 100vh;

    z-index: 999;

    transition: .3s ease;
  }

  .sidebar.show {
    left: 0;
  }

  .content {
    width: 100%;
    padding: 18px;
  }

  .cards {
    grid-template-columns: repeat(2,1fr);
  }
}

@media (max-width: 640px) {
  .content {
    padding: 18px;
  }

  .topbar,
  .panel-head {
    flex-direction: column;
    align-items: flex-start;
  }

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

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

  .form-grid textarea,
  .form-grid .btn {
    grid-column: span 1;
  }
}

.sidebar {
  transition: all .3s ease;
}

.sidebar.collapsed {
  width: 80px;
  padding: 24px 12px;
}

.sidebar.collapsed h1,
.sidebar.collapsed p {
  display: none;
}

.sidebar.collapsed .menu-btn {
  text-align: center;
  padding: 14px 8px;
}

.sidebar-toggle {
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 12px;
  cursor: pointer;

  background: var(--panel);
  color: var(--text);

  font-size: 20px;
  flex-shrink: 0;
}

.sidebar-toggle:hover {
  background: var(--panel-2);
}

#overlay {
  position: fixed;
  inset: 0;

  background: rgba(0,0,0,.5);

  opacity: 0;
  visibility: hidden;

  transition: .3s ease;

  z-index: 998;
}

#overlay.show {
  opacity: 1;
  visibility: visible;
}

#toast{
  position:fixed;
  top:20px;
  right:20px;

  background:#22c55e;
  color:white;

  padding:14px 20px;

  border-radius:12px;

  opacity:0;
  transform:translateY(-20px);

  transition:.3s;

  z-index:9999;
}

#toast.show{
  opacity:1;
  transform:translateY(0);
}

.search-input{
  width:100%;
  margin:12px 0 18px;

  background:var(--panel-2);
  border:1px solid var(--border);

  color:var(--text);

  padding:14px 16px;
  border-radius:14px;

  outline:none;
}

.search-input:focus{
  border-color:var(--accent);
}

.history-filters{
  display:flex;
  gap:10px;
  margin-bottom:18px;
  flex-wrap:wrap;
}

.filter-btn{
  border:none;
  cursor:pointer;

  padding:10px 16px;

  border-radius:999px;

  background:var(--panel-2);
  color:var(--text);
}

.filter-btn.active{
  background:linear-gradient(
    135deg,
    var(--accent),
    var(--accent-2)
  );
}

.card:nth-child(1) {
  border-left: 4px solid #3b82f6;
}

.card:nth-child(2) {
  border-left: 4px solid #8b5cf6;
}

.card:nth-child(3) {
  border-left: 4px solid #22c55e;
}

.card:nth-child(4) {
  border-left: 4px solid #f59e0b;
}

.login-page{
  position:fixed;
  inset:0;

  display:flex;
  align-items:center;
  justify-content:center;

  background:#0b1220;
  z-index:99999;
}

.login-card{
  width:100%;
  max-width:380px;

  background:var(--panel);

  padding:30px;

  border-radius:20px;

  display:flex;
  flex-direction:column;
  gap:14px;
}

.login-card input{
  padding:14px;
  border-radius:12px;

  border:1px solid var(--border);

  background:var(--panel-2);

  color:white;
}

.login-card button{
  padding:14px;

  border:none;

  border-radius:12px;

  background:linear-gradient(
    135deg,
    var(--accent),
    var(--accent-2)
  );

  color:white;

  cursor:pointer;
}