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

:root {
  --blue-dark:   #0d47a1;
  --blue-mid:    #1565c0;
  --blue-light:  #1976d2;
  --blue-pale:   #e3f2fd;
  --green:       #43a047;
  --green-dark:  #388e3c;
  --black-bar:   #212121;
  --text-main:   #212121;
  --text-muted:  #666;
  --border:      #ddd;
  --bg:          #f0f4f8;
  --white:       #ffffff;
  --orange:      #ffa726;
  --red:         #e53935;
  --shadow:      0 2px 8px rgba(0,0,0,0.10);
}

html, body {
  height: 100%;
  font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  font-size: 13px;
  background: var(--bg);
  color: var(--text-main);
}

.screen { display: none; flex-direction: column; height: 100vh; }
.screen.active { display: flex; }

.top-bar {
  background: var(--blue-dark);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.logo-circle {
  width: 46px; height: 46px; border-radius: 50%;
  background: white; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.logo-circle i { font-size: 24px; color: var(--blue-dark); }
.top-title { color: white; font-size: 14px; font-weight: 600; line-height: 1.35; }
.top-title small { display: block; font-size: 10px; font-weight: 400; opacity: 0.75; }
.top-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.top-right span { color: rgba(255,255,255,0.85); font-size: 12px; }
.top-right i { color: white; font-size: 20px; cursor: pointer; opacity: 0.85; }
.top-right i:hover { opacity: 1; }

.nav-bar {
  background: var(--blue-mid);
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid var(--blue-dark);
  flex-shrink: 0;
  overflow-x: auto;
}
.nav-bar::-webkit-scrollbar { height: 3px; }
.nav-bar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.3); }
.nav-item {
  color: rgba(255,255,255,0.7);
  font-size: 12px;
  padding: 9px 15px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color 0.15s;
  user-select: none;
}
.nav-item:hover { color: white; }
.nav-item.active { color: white; border-bottom-color: var(--green); font-weight: 600; }

.content { flex: 1; padding: 16px 20px; overflow-y: auto; }

.bottom-bar {
  background: var(--blue-mid);
  padding: 6px 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.bottom-bar span { color: rgba(255,255,255,0.6); font-size: 10px; }

#loginScreen { background: var(--blue-dark); }
#loginScreen .content {
  background: var(--blue-pale);
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  background: var(--white);
  border-radius: 8px;
  padding: 36px 40px;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.login-card h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--blue-mid);
  text-align: center;
  border-bottom: 2px solid var(--blue-mid);
  padding-bottom: 12px;
  margin-bottom: 24px;
}
.auth-tabs {
  display: flex;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--blue-pale);
}
.auth-tab {
  flex: 1;
  text-align: center;
  padding: 8px 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.15s, border-color 0.15s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  user-select: none;
}
.auth-tab:hover { color: var(--blue-mid); }
.auth-tab.active { color: var(--blue-mid); border-bottom-color: var(--blue-mid); }
.auth-form { display: none; }
.auth-form.active { display: block; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 11px; color: var(--text-muted); margin-bottom: 4px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.4px; }
.field input {
  width: 100%; height: 38px;
  border: 1px solid #bbb; border-radius: 4px;
  padding: 0 12px; font-size: 13px; color: var(--text-main);
  background: #fafafa; outline: none; transition: border-color 0.15s;
}
.field input:focus { border-color: var(--blue-mid); background: white; box-shadow: 0 0 0 3px rgba(21,101,192,0.12); }
.login-btn {
  width: 100%; height: 40px;
  background: var(--blue-mid); color: white;
  border: none; border-radius: 4px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.5px;
  cursor: pointer; margin-top: 8px; transition: background 0.15s;
}
.login-btn:hover { background: var(--blue-dark); }
.login-btn:active { transform: scale(0.985); }
.login-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.alert {
  font-size: 12px; border-radius: 4px; padding: 9px 12px;
  margin-bottom: 14px; display: none;
}
.alert-error { color: #b71c1c; background: #ffebee; border: 1px solid #ef9a9a; }
.alert-success { color: #1b5e20; background: #e8f5e9; border: 1px solid #a5d6a7; }
.login-footer { text-align: center; margin-top: 16px; font-size: 11px; color: #999; }

.page-header {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.page-title { font-size: 15px; font-weight: 600; color: var(--blue-mid); }
.page-sub { font-size: 11px; color: var(--text-muted); }

.stats-row { display: flex; gap: 10px; margin-bottom: 14px; }
.stat-card {
  flex: 1; background: var(--white);
  border-radius: 6px; border: 1px solid var(--border);
  padding: 10px 14px;
}
.stat-card .num { font-size: 24px; font-weight: 700; }
.stat-card .lbl { font-size: 10px; color: var(--text-muted); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.4px; }

.toolbar { display: flex; gap: 8px; margin-bottom: 12px; }
.toolbar input {
  flex: 1; height: 34px; border: 1px solid var(--border);
  border-radius: 4px; padding: 0 12px; font-size: 12px; outline: none;
}
.toolbar input:focus { border-color: var(--blue-mid); }
.btn {
  height: 34px; padding: 0 14px; border-radius: 4px;
  font-size: 12px; font-weight: 600; cursor: pointer; border: none;
  display: inline-flex; align-items: center; gap: 5px; white-space: nowrap;
  transition: background 0.15s, transform 0.1s;
}
.btn:active { transform: scale(0.97); }
.btn-blue { background: var(--blue-mid); color: white; }
.btn-blue:hover { background: var(--blue-dark); }
.btn-green { background: var(--green); color: white; }
.btn-green:hover { background: var(--green-dark); }
.btn-outline { background: white; color: var(--blue-mid); border: 1px solid var(--blue-mid); }
.btn-outline:hover { background: var(--blue-pale); }
.btn-purple {
  background: #7c3aed;
  color: white;
  border: none;
  border-radius: 6px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-purple:hover { background: #6d28d9; }

.table-wrap {
  background: var(--white);
  border-radius: 6px;
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow);
}
table { width: 100%; border-collapse: collapse; table-layout: fixed; }
thead { background: var(--blue-mid); }
thead th {
  color: white; font-size: 11px; font-weight: 600;
  padding: 10px 10px; text-align: left;
  border-right: 1px solid rgba(255,255,255,0.15);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  text-transform: uppercase; letter-spacing: 0.3px;
}
thead th:last-child { border-right: none; }
tbody tr { border-bottom: 1px solid #f0f0f0; cursor: pointer; transition: background 0.1s; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--blue-pale); }
tbody tr.selected { background: #bbdefb; }
td { padding: 9px 10px; color: var(--text-main); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11px; font-weight: 600; padding: 2px 8px;
  border-radius: 12px; white-space: nowrap;
}
.badge-dot { width: 7px; height: 7px; border-radius: 50%; }
.badge.waiting  { background: #fff3e0; color: #e65100; }
.badge.ready    { background: #e8f5e9; color: #1b5e20; }
.badge.complete { background: #e3f2fd; color: #0d47a1; }
.badge.cancelled{ background: #ffebee; color: #b71c1c; }
.dot-waiting  { background: #ffa726; }
.dot-ready    { background: #43a047; }
.dot-complete { background: #1565c0; }
.dot-cancelled{ background: #e53935; }

.action-btn {
  background: none; border: none; cursor: pointer;
  color: var(--blue-mid); font-size: 16px; padding: 3px 5px;
  border-radius: 3px; transition: background 0.1s;
}
.action-btn:hover { background: var(--blue-pale); }

.patient-layout { display: flex; gap: 14px; }
.patient-col { flex: 1; display: flex; flex-direction: column; gap: 12px; }
.info-card {
  background: var(--white); border-radius: 6px;
  border: 1px solid var(--border); overflow: hidden; box-shadow: var(--shadow);
}
.info-card-header {
  background: var(--blue-mid); color: white;
  padding: 8px 14px; font-size: 12px; font-weight: 600;
  display: flex; align-items: center; gap: 8px;
  text-transform: uppercase; letter-spacing: 0.4px;
}
.info-card-body { padding: 14px; }
.info-row { display: flex; margin-bottom: 8px; font-size: 12px; }
.info-row:last-child { margin-bottom: 0; }
.info-label { color: var(--text-muted); width: 130px; flex-shrink: 0; font-size: 11px; text-transform: uppercase; letter-spacing: 0.3px; padding-top: 1px; }
.info-value { color: var(--text-main); font-weight: 500; }
.patient-photo {
  width: 80px; height: 80px; border-radius: 50%;
  background: var(--blue-pale); border: 3px solid var(--blue-mid);
  display: flex; align-items: center; justify-content: center;
  font-size: 36px; color: var(--blue-mid); margin: 0 auto 12px;
  overflow: hidden;
}

.action-bar {
  background: var(--green); padding: 8px 14px;
  display: flex; gap: 8px; align-items: center; flex-shrink: 0;
}
.action-bar-black { background: var(--black-bar); }
.action-bar .btn-tab {
  background: rgba(255,255,255,0.18); color: white;
  border: 1px solid rgba(255,255,255,0.3); border-radius: 4px;
  height: 30px; padding: 0 12px; font-size: 11px; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  display: inline-flex; align-items: center; gap: 5px;
  transition: background 0.12s;
}
.action-bar .btn-tab:hover { background: rgba(255,255,255,0.3); }
.action-bar .btn-tab.active-tab { background: rgba(255,255,255,0.35); border-color: white; }

.section-tabs {
  background: var(--blue-dark); display: flex; align-items: center;
  padding: 6px 14px; gap: 4px; overflow-x: auto; flex-shrink: 0;
}
.sec-tab {
  color: rgba(255,255,255,0.7); font-size: 11px;
  padding: 6px 10px; border-radius: 4px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  white-space: nowrap; transition: background 0.12s; min-width: 60px;
}
.sec-tab i { font-size: 18px; }
.sec-tab:hover { background: rgba(255,255,255,0.12); color: white; }
.sec-tab.active { background: rgba(255,255,255,0.2); color: white; }

.med-table { width: 100%; border-collapse: collapse; }
.med-table th {
  background: var(--blue-dark); color: white;
  font-size: 11px; font-weight: 600; padding: 8px 10px; text-align: left;
  text-transform: uppercase; letter-spacing: 0.3px;
}
.med-table td { padding: 8px 10px; font-size: 12px; border-bottom: 1px solid #f0f0f0; }
.med-table tr:last-child td { border-bottom: none; }
.med-table tr:hover td { background: var(--blue-pale); }

.lab-form .field { margin-bottom: 12px; }
.lab-form label { display: block; font-size: 11px; color: var(--text-muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.3px; }
.lab-form input, .lab-form select, .lab-form textarea {
  width: 100%; height: 34px; border: 1px solid var(--border);
  border-radius: 4px; padding: 0 10px; font-size: 12px; outline: none;
}
.lab-form textarea { height: 80px; padding: 8px 10px; resize: vertical; }
.lab-form input:focus, .lab-form select:focus, .lab-form textarea:focus { border-color: var(--blue-mid); }

.note-area { width: 100%; height: 120px; border: 1px solid var(--border); border-radius: 4px; padding: 10px; font-size: 12px; resize: vertical; outline: none; font-family: inherit; }
.note-area:focus { border-color: var(--blue-mid); }

.problem-add-row { display: flex; gap: 8px; align-items: flex-end; margin-bottom: 16px; }
.problem-add-row .field { flex: 1; margin-bottom: 0; }
.problem-add-row select { width: 100%; height: 34px; border: 1px solid var(--border); border-radius: 4px; padding: 0 10px; font-size: 12px; outline: none; }
.problem-add-row select:focus { border-color: var(--blue-mid); }
.remove-btn { color: var(--red); cursor: pointer; border: none; background: none; font-size: 16px; padding: 3px 5px; border-radius: 3px; }
.remove-btn:hover { background: #ffebee; }
.order-subtabs { margin-left: auto; display: flex; gap: 4px; }
.order-subtabs .btn-tab { font-size: 10px; height: 26px; padding: 0 10px; }

.imaging-box {
  background: var(--black-bar); border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  height: 200px; color: rgba(255,255,255,0.4); font-size: 13px;
  flex-direction: column; gap: 8px; margin-bottom: 12px;
}
.imaging-box i { font-size: 48px; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }
.empty-state i { font-size: 40px; margin-bottom: 8px; display: block; opacity: 0.4; }

.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.45); z-index: 100;
  align-items: center; justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal {
  background: white; border-radius: 8px; padding: 28px 32px;
  width: 100%; max-width: 380px; box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.modal h3 { font-size: 15px; font-weight: 600; color: var(--blue-mid); margin-bottom: 16px; }
.modal-footer { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #ccc; border-radius: 3px; }

@media (max-width: 700px) {
  .stats-row { flex-wrap: wrap; }
  .stat-card { min-width: calc(50% - 5px); }
  .patient-layout { flex-direction: column; }
}