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

:root {
  --bg:       #0a0d14;
  --surface:  #111620;
  --card:     #161c28;
  --border:   #1e2840;
  --accent:   #00e5c3;
  --danger:   #ff4d6d;
  --warn:     #ffb830;
  --ok:       #00e5c3;
  --text:     #e4eaf5;
  --muted:    #5a6a8a;
  --font-head: 'Syne', sans-serif;
  --font-mono: 'DM Mono', monospace;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── LOGIN ── */
#login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 60% 40%, #0d1a2e 0%, var(--bg) 70%);
}

.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 44px 40px;
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}

.login-logo {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  text-align: center;
}
.login-logo span { color: var(--accent); }

.login-subtitle {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: -10px;
}

.login-error {
  color: var(--danger);
  font-size: 12px;
  text-align: center;
  min-height: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field label {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.field input {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}
.field input:focus { border-color: var(--accent); }
.field input::placeholder { color: var(--muted); }

.login-btn {
  background: var(--accent);
  color: #0a0d14;
  border: none;
  border-radius: 8px;
  padding: 13px;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  letter-spacing: 0.04em;
  margin-top: 4px;
}
.login-btn:hover   { opacity: 0.88; }
.login-btn:active  { transform: scale(0.98); }

.login-hint {
  font-size: 11px;
  color: var(--muted);
  text-align: center;
  line-height: 1.6;
}
.login-hint strong { color: var(--accent); }

/* ── HEADER ── */
header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.logo {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
}
.logo span { color: var(--accent); }

.status-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  color: var(--accent);
  background: rgba(0,229,195,0.08);
  border: 1px solid rgba(0,229,195,0.2);
  border-radius: 20px;
  padding: 4px 12px;
  letter-spacing: 0.05em;
}

.pulse-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

.header-time {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.user-info {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--muted);
}

.logout-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s;
}
.logout-btn:hover { border-color: var(--danger); color: var(--danger); }

/* ── LAYOUT ── */
.layout {
  display: flex;
  height: calc(100vh - 57px);
  overflow: hidden;
}

/* ── SIDEBAR ── */
.sidebar {
  width: 210px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar-title {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 20px 18px 10px;
}

#patient-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 10px 16px;
}

#patient-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
  border: 1px solid transparent;
}
#patient-list li:hover { background: var(--card); }
#patient-list li.active {
  background: rgba(0,229,195,0.07);
  border-color: rgba(0,229,195,0.2);
}

.p-avatar {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 11px;
  color: var(--accent);
  flex-shrink: 0;
}
#patient-list li.active .p-avatar {
  background: rgba(0,229,195,0.12);
  border-color: rgba(0,229,195,0.3);
}

.p-info { overflow: hidden; }
.p-name {
  font-size: 12px;
  font-family: var(--font-head);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.p-ward {
  font-size: 10px;
  color: var(--muted);
  margin-top: 1px;
}

.p-risk {
  margin-left: auto;
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.p-risk.ok     { background: var(--ok); }
.p-risk.warn   { background: var(--warn); }
.p-risk.danger { background: var(--danger); animation: pulse 1s infinite; }

/* ── MAIN ── */
main {
  flex: 1;
  overflow-y: auto;
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.patient-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 20px;
}
.patient-info { display: flex; align-items: center; gap: 14px; }
.avatar {
  width: 44px; height: 44px;
  background: rgba(0,229,195,0.12);
  border: 1px solid rgba(0,229,195,0.3);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  color: var(--accent);
}
.patient-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
}
.patient-meta { font-size: 11px; color: var(--muted); margin-top: 2px; }

.risk-badge {
  font-size: 12px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--ok);
  color: var(--ok);
  background: rgba(0,229,195,0.08);
  transition: all 0.4s;
}
.risk-badge.warn   { border-color: var(--warn); color: var(--warn); background: rgba(255,184,48,0.1); }
.risk-badge.danger { border-color: var(--danger); color: var(--danger); background: rgba(255,77,109,0.1); }

/* ── VITALS ── */
.vitals-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.vital-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s;
}
.vital-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0.5;
  transition: opacity 0.3s;
}
.vital-card.alert { border-color: var(--danger); }
.vital-card.alert::before { background: var(--danger); opacity: 1; }

.vital-label {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.vital-value {
  font-family: var(--font-head);
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
  margin: 6px 0 0;
  color: var(--text);
  transition: color 0.3s;
}
.vital-card.alert .vital-value { color: var(--danger); }
.vital-unit { font-size: 10px; color: var(--muted); }
canvas { margin-top: 8px; width: 100% !important; }
.vital-range { font-size: 10px; color: var(--muted); margin-top: 4px; }

/* ── LOWER ── */
.lower-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 14px;
}

.ecg-panel, .alerts-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.panel-header {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
#ecg-canvas { width: 100% !important; display: block; }

.alerts-panel {
  max-height: 200px;
  display: flex;
  flex-direction: column;
}
#alert-list {
  list-style: none;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
#alert-list::-webkit-scrollbar { width: 3px; }
#alert-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

#alert-list li {
  font-size: 10px;
  padding: 7px 9px;
  border-radius: 5px;
  border-left: 3px solid;
  animation: slideIn 0.3s ease;
}
@keyframes slideIn {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}
#alert-list li.ok     { border-color: var(--ok);     background: rgba(0,229,195,0.05);   color: var(--ok); }
#alert-list li.warn   { border-color: var(--warn);   background: rgba(255,184,48,0.05);  color: var(--warn); }
#alert-list li.danger { border-color: var(--danger); background: rgba(255,77,109,0.05);  color: var(--danger); }

/* ── CONTROLS ── */
.controls { display: flex; gap: 10px; }
button {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 9px 20px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.04em;
}
button:hover  { border-color: var(--accent); color: var(--accent); background: rgba(0,229,195,0.06); }
button:active { transform: scale(0.97); }

/* ── RESPONSIVE ── */
@media (max-width: 1000px) {
  .vitals-grid { grid-template-columns: repeat(2,1fr); }
  .lower-grid  { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .sidebar { width: 60px; }
  .sidebar-title, .p-info, .p-risk { display: none; }
  .p-avatar { width: 36px; height: 36px; }
  #patient-list li { justify-content: center; }
  main { padding: 14px; }
  .vitals-grid { grid-template-columns: 1fr 1fr; }
}