:root {
  --bg: #0f1117;
  --bg2: #161b27;
  --bg3: #1e2535;
  --border: #2a3349;
  --accent: #4f8ef7;
  --accent2: #7c3aed;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --text: #e2e8f0;
  --text2: #94a3b8;
  --text3: #64748b;
  --radius: 10px;
  --sidebar-w: 220px;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.screen { display: none; }
.screen.active { display: flex; }

/* ========== LOGIN ========== */
#login-screen, #register-screen {
  min-height: 100vh;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 20% 50%, #1a1f35 0%, var(--bg) 60%);
}

.login-container {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 25px 50px rgba(0,0,0,0.5);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.logo-icon {
  font-size: 40px;
  color: var(--accent);
  margin-bottom: 8px;
}

.login-logo h1 { font-size: 24px; font-weight: 700; }
.login-logo h1 span { color: var(--accent); }
.login-logo p { color: var(--text2); font-size: 13px; margin-top: 4px; }

.login-form .form-group { margin-bottom: 16px; }
.login-form label { display: block; font-size: 13px; color: var(--text2); margin-bottom: 6px; }
.login-form input {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.2s;
}
.login-form input:focus { outline: none; border-color: var(--accent); }

.login-footer { text-align: center; margin-top: 20px; }
.login-footer a { color: var(--accent); font-size: 13px; text-decoration: none; }
.login-footer a:hover { text-decoration: underline; }

/* ========== BUTTONS ========== */
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
}
.btn-primary:hover { opacity: 0.9; }
.btn-primary:active { transform: scale(0.98); }
.btn-full { width: 100%; padding: 12px; font-size: 15px; margin-top: 8px; }

.btn-secondary {
  background: var(--bg3);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 16px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-secondary:hover { background: var(--border); }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
}
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-icon {
  background: transparent;
  border: none;
  color: var(--text2);
  cursor: pointer;
  font-size: 16px;
  padding: 4px 8px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.btn-icon:hover { color: var(--text); background: var(--border); }

/* ========== MAIN APP ========== */
#main-app {
  min-height: 100vh;
  flex-direction: row;
}

/* SIDEBAR */
#sidebar {
  width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  z-index: 100;
}

.sidebar-logo {
  padding: 20px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
}
.sidebar-logo .logo-icon { font-size: 22px; color: var(--accent); }

.nav-menu { flex: 1; padding: 12px 8px; overflow-y: auto; }

.nav-section-title {
  font-size: 10px;
  text-transform: uppercase;
  color: var(--text3);
  letter-spacing: 1px;
  padding: 8px 8px 4px;
  margin-top: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text2);
  transition: all 0.15s;
  margin-bottom: 2px;
}
.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: rgba(79,142,247,0.15); color: var(--accent); }
.nav-item .nav-icon { width: 18px; text-align: center; font-size: 16px; }

.sidebar-bottom {
  padding: 12px;
  border-top: 1px solid var(--border);
}

.user-info {
  padding: 8px 10px;
  margin-bottom: 8px;
  background: var(--bg3);
  border-radius: 8px;
  font-size: 12px;
}
.user-info .user-name { font-weight: 600; color: var(--text); }
.user-info .user-role { color: var(--text3); margin-top: 2px; }

.btn-logout {
  width: 100%;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text2);
  border-radius: 8px;
  padding: 8px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-logout:hover { border-color: var(--danger); color: var(--danger); }

/* CONTENT */
#content {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 24px;
  min-height: 100vh;
  overflow-y: auto;
}

/* ========== PAGE COMPONENTS ========== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.page-header h2 { font-size: 20px; font-weight: 600; }
.page-header p { color: var(--text2); font-size: 13px; margin-top: 2px; }

/* CARDS */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.stat-card .stat-label { font-size: 12px; color: var(--text2); margin-bottom: 6px; }
.stat-card .stat-value { font-size: 26px; font-weight: 700; color: var(--text); }
.stat-card .stat-sub { font-size: 11px; color: var(--text3); margin-top: 2px; }
.stat-card.accent { border-color: rgba(79,142,247,0.3); }
.stat-card.accent .stat-value { color: var(--accent); }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.warning .stat-value { color: var(--warning); }

/* TABLE */
.table-wrapper { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
thead th {
  text-align: left;
  padding: 10px 14px;
  color: var(--text2);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.1s;
}
tbody tr:hover { background: rgba(255,255,255,0.02); }
tbody td { padding: 10px 14px; color: var(--text); vertical-align: middle; }
tbody tr:last-child { border-bottom: none; }

/* STATUS BADGES */
.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 500;
}
.badge-pending { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-confirmed { background: rgba(79,142,247,0.15); color: var(--accent); }
.badge-printing { background: rgba(124,58,237,0.15); color: #a78bfa; }
.badge-done { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-delivered { background: rgba(34,197,94,0.1); color: #4ade80; }
.badge-cancelled { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-official { background: rgba(34,197,94,0.1); color: var(--success); }
.badge-unofficial { background: rgba(100,116,139,0.2); color: var(--text3); }

/* FORMS */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-grid.cols-1 { grid-template-columns: 1fr; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 13px; color: var(--text2); }
.form-group input, .form-group select, .form-group textarea {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group select option { background: var(--bg3); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-group .input-prefix {
  display: flex;
  align-items: center;
  gap: 0;
}
.form-group .input-prefix span {
  background: var(--border);
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-right: none;
  border-radius: 8px 0 0 8px;
  color: var(--text2);
  font-size: 13px;
}
.form-group .input-prefix input {
  border-radius: 0 8px 8px 0;
}

/* CALCULATOR RESULT */
.calc-result {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-top: 16px;
}
.calc-result .calc-line {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text2);
  margin-bottom: 6px;
}
.calc-result .calc-total {
  display: flex;
  justify-content: space-between;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

/* MODAL */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  backdrop-filter: blur(4px);
}
.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 60px rgba(0,0,0,0.5);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.modal-header h3 { font-size: 17px; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text2); font-size: 20px; cursor: pointer; }
.modal-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 24px;
}

/* TABS */
.tabs { display: flex; gap: 4px; margin-bottom: 20px; background: var(--bg2); padding: 4px; border-radius: 10px; border: 1px solid var(--border); width: fit-content; }
.tab-btn { padding: 7px 16px; border-radius: 7px; border: none; background: transparent; color: var(--text2); font-size: 13px; cursor: pointer; transition: all 0.15s; }
.tab-btn.active { background: var(--accent); color: #fff; font-weight: 500; }

/* SWITCH */
.toggle-switch { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.toggle-switch input { display: none; }
.toggle-track {
  width: 40px; height: 22px; background: var(--border); border-radius: 11px;
  position: relative; transition: background 0.2s;
}
.toggle-track::after {
  content: ''; position: absolute; top: 3px; left: 3px;
  width: 16px; height: 16px; background: #fff; border-radius: 50%;
  transition: left 0.2s;
}
.toggle-switch input:checked + .toggle-track { background: var(--accent); }
.toggle-switch input:checked + .toggle-track::after { left: 21px; }

/* ALERTS */
.error-msg { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); color: var(--danger); padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-top: 8px; }
.success-msg { background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.3); color: var(--success); padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-top: 8px; }
.hidden { display: none !important; }

/* EMPTY STATE */
.empty-state { text-align: center; padding: 48px 20px; color: var(--text3); }
.empty-state .empty-icon { font-size: 40px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* LOADING */
.spinner { display: inline-block; width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ACTIONS BAR */
.actions-bar { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.actions-bar .search-input {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  color: var(--text);
  font-size: 13px;
  width: 220px;
}
.actions-bar .search-input:focus { outline: none; border-color: var(--accent); }

/* ORDER DETAIL */
.order-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.detail-section { background: var(--bg3); border-radius: 8px; padding: 16px; }
.detail-section h4 { font-size: 12px; text-transform: uppercase; color: var(--text3); letter-spacing: 0.5px; margin-bottom: 12px; }
.detail-row { display: flex; justify-content: space-between; margin-bottom: 6px; font-size: 13px; }
.detail-row .label { color: var(--text2); }
.detail-row .value { color: var(--text); font-weight: 500; }

/* RESPONSIVE */
@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }
  #sidebar { transform: translateX(-220px); width: 220px; transition: transform 0.3s; }
  #sidebar.open { transform: translateX(0); }
  #content { margin-left: 0; padding: 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .order-detail-grid { grid-template-columns: 1fr; }
}