:root {
  --primary: #00b4d8;
  --primary-dark: #0077b6;
  --primary-light: #90e0ef;
  --accent: #06d6a0;
  --accent2: #f4a261;
  --danger: #e63946;
  --warning: #ffd166;
  --bg-dark: #0a0e1a;
  --bg-card: #111827;
  --bg-card2: #1a2332;
  --bg-sidebar: #0d1526;
  --border: rgba(0,180,216,0.15);
  --text-primary: #e8f4f8;
  --text-secondary: #8ca8bc;
  --text-muted: #4a6278;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html,body{height:100%;font-family:'Inter',sans-serif;background:var(--bg-dark);color:var(--text-primary);overflow:hidden;}
body{display:flex;}

/* ===== SIDEBAR ===== */
.sidebar{width:240px;background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;transition:width 0.3s ease;flex-shrink:0;z-index:100;position:relative;}
.sidebar.collapsed{width:68px;}
.sidebar-header{padding:20px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;}
.logo{display:flex;align-items:center;gap:10px;overflow:hidden;}
.logo-icon{font-size:28px;flex-shrink:0;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;}
.logo-text{display:flex;flex-direction:column;white-space:nowrap;}
.logo-name{font-size:14px;font-weight:700;color:var(--primary);}
.logo-sub{font-size:11px;color:var(--text-secondary);}
.sidebar.collapsed .logo-text,.sidebar.collapsed .nav-label,.sidebar.collapsed .sidebar-footer,.sidebar.collapsed .logo-sub{display:none;}
.sidebar-toggle{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:18px;padding:4px;}
.sidebar-nav{flex:1;padding:12px 8px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;}
.nav-item{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:var(--radius-sm);color:var(--text-secondary);text-decoration:none;transition:var(--transition);font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;}
.nav-item:hover{background:rgba(0,180,216,0.1);color:var(--primary);}
.nav-item.active{background:linear-gradient(135deg,rgba(0,180,216,0.2),rgba(6,214,160,0.1));color:var(--primary);border:1px solid rgba(0,180,216,0.25);}
.nav-icon{font-size:18px;flex-shrink:0;}
.sidebar-footer{padding:16px;border-top:1px solid var(--border);}
.clinic-status{font-size:12px;color:var(--accent);}

/* ===== MAIN ===== */
.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden;}
.topbar{height:64px;background:var(--bg-card);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;flex-shrink:0;}
.topbar-left{display:flex;align-items:center;gap:16px;}
.menu-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:20px;padding:4px;}
.page-title{font-size:20px;font-weight:700;color:var(--text-primary);}
.topbar-right{display:flex;align-items:center;gap:16px;}
.date-display{font-size:13px;color:var(--text-secondary);}
.page-container{flex:1;overflow-y:auto;padding:24px;}
.page{display:none;}
.page.active{display:block;}

/* ===== BUTTONS ===== */
.btn{padding:9px 18px;border-radius:var(--radius-sm);border:none;cursor:pointer;font-size:13px;font-weight:600;transition:var(--transition);display:inline-flex;align-items:center;gap:6px;}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;}
.btn-primary:hover{opacity:0.9;transform:translateY(-1px);}
.btn-accent{background:linear-gradient(135deg,var(--accent),#04b885);color:#fff;}
.btn-accent:hover{opacity:0.9;transform:translateY(-1px);}
.btn-danger{background:linear-gradient(135deg,var(--danger),#c1121f);color:#fff;}
.btn-danger:hover{opacity:0.9;}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text-secondary);}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);}
.btn-warning{background:linear-gradient(135deg,var(--warning),#ffb347);color:#1a1a1a;}
.btn-sm{padding:6px 12px;font-size:12px;}
.btn-xs{padding:4px 8px;font-size:11px;}

/* ===== CARDS ===== */
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:var(--transition);}
.card:hover{border-color:rgba(0,180,216,0.3);}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.card-title{font-size:15px;font-weight:600;color:var(--text-primary);}
.card-subtitle{font-size:12px;color:var(--text-secondary);}

/* ===== STAT CARDS ===== */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px;}
.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:relative;overflow:hidden;transition:var(--transition);}
.stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient,linear-gradient(90deg,var(--primary),var(--accent)));}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);}
.stat-icon{font-size:32px;margin-bottom:8px;}
.stat-value{font-size:28px;font-weight:800;color:var(--text-primary);}
.stat-label{font-size:12px;color:var(--text-secondary);margin-top:4px;}
.stat-change{font-size:11px;margin-top:6px;padding:2px 8px;border-radius:20px;display:inline-block;}
.stat-change.up{background:rgba(6,214,160,0.15);color:var(--accent);}
.stat-change.down{background:rgba(230,57,70,0.15);color:var(--danger);}

/* ===== GRID LAYOUTS ===== */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.grid-auto{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;}

/* ===== FORMS ===== */
.form-group{margin-bottom:16px;}
.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px;}
.form-control{width:100%;padding:10px 14px;background:var(--bg-dark);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:14px;font-family:inherit;transition:var(--transition);}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,180,216,0.1);}
.form-control::placeholder{color:var(--text-muted);}
select.form-control option{background:var(--bg-card);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.form-row-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;}
textarea.form-control{resize:vertical;min-height:80px;}

/* ===== TABLES ===== */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border);}
table{width:100%;border-collapse:collapse;}
thead tr{background:var(--bg-card2);}
th{padding:12px 16px;text-align:left;font-size:12px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.5px;border-bottom:1px solid var(--border);}
td{padding:12px 16px;font-size:13px;border-bottom:1px solid rgba(255,255,255,0.04);}
tr:last-child td{border-bottom:none;}
tr:hover td{background:rgba(0,180,216,0.04);}

/* ===== BADGES ===== */
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;}
.badge-success{background:rgba(6,214,160,0.15);color:var(--accent);}
.badge-danger{background:rgba(230,57,70,0.15);color:var(--danger);}
.badge-warning{background:rgba(255,209,102,0.15);color:var(--warning);}
.badge-info{background:rgba(0,180,216,0.15);color:var(--primary);}
.badge-secondary{background:rgba(255,255,255,0.08);color:var(--text-secondary);}

/* ===== SEARCH BAR ===== */
.search-bar{display:flex;align-items:center;gap:12px;margin-bottom:20px;flex-wrap:wrap;}
.search-input-wrap{position:relative;flex:1;min-width:200px;}
.search-input-wrap input{width:100%;padding:10px 14px 10px 38px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:14px;}
.search-input-wrap input:focus{outline:none;border-color:var(--primary);}
.search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);}

/* ===== MODAL ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.7);backdrop-filter:blur(4px);z-index:1000;display:none;align-items:center;justify-content:center;padding:20px;}
.modal-overlay.active{display:flex;}
.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:600px;max-height:90vh;overflow-y:auto;animation:slideUp 0.3s ease;}
.modal-lg{max-width:800px;}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border);}
.modal-header h3{font-size:16px;font-weight:700;}
.modal-close{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:18px;transition:var(--transition);}
.modal-close:hover{color:var(--danger);}
.modal-body{padding:24px;}
.modal-footer{padding:16px 24px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:12px;}

/* ===== TOAST ===== */
.toast-container{position:fixed;bottom:24px;right:24px;z-index:2000;display:flex;flex-direction:column;gap:8px;}
.toast{padding:12px 20px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;animation:slideInRight 0.3s ease;display:flex;align-items:center;gap:10px;min-width:260px;box-shadow:var(--shadow);}
.toast-success{background:linear-gradient(135deg,rgba(6,214,160,0.9),rgba(4,184,133,0.9));color:#fff;}
.toast-error{background:linear-gradient(135deg,rgba(230,57,70,0.9),rgba(193,18,31,0.9));color:#fff;}
.toast-info{background:linear-gradient(135deg,rgba(0,180,216,0.9),rgba(0,119,182,0.9));color:#fff;}
.toast-warning{background:linear-gradient(135deg,rgba(255,209,102,0.9),rgba(255,179,71,0.9));color:#1a1a1a;}

/* ===== TABS ===== */
.tabs{display:flex;gap:4px;background:var(--bg-card2);padding:4px;border-radius:var(--radius-sm);margin-bottom:20px;width:fit-content;}
.tab-btn{padding:8px 20px;border-radius:6px;border:none;background:none;color:var(--text-secondary);cursor:pointer;font-size:13px;font-weight:500;transition:var(--transition);}
.tab-btn.active{background:var(--primary);color:#fff;}

/* ===== CHART CONTAINER ===== */
.chart-container{position:relative;height:260px;}

/* ===== PATIENT CARD ===== */
.patient-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;cursor:pointer;transition:var(--transition);}
.patient-card:hover{border-color:var(--primary);transform:translateY(-2px);}
.patient-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff;flex-shrink:0;}
.patient-info{flex:1;}
.patient-name{font-size:14px;font-weight:600;}
.patient-meta{font-size:12px;color:var(--text-secondary);}

/* ===== DRUG CARD ===== */
.drug-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;transition:var(--transition);}
.drug-card:hover{border-color:rgba(0,180,216,0.3);}
.drug-card.low-stock{border-color:rgba(230,57,70,0.4);}
.stock-bar{height:6px;background:var(--bg-dark);border-radius:3px;margin-top:8px;overflow:hidden;}
.stock-bar-fill{height:100%;border-radius:3px;transition:width 0.5s ease;}

/* ===== SECTION HEADER ===== */
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.section-title{font-size:18px;font-weight:700;}

/* ===== EMPTY STATE ===== */
.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted);}
.empty-state .emoji{font-size:48px;margin-bottom:12px;}
.empty-state p{font-size:14px;}

/* ===== QUICK ACTIONS ===== */
.quick-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px;}

/* ===== ANIMATIONS ===== */
@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideInRight{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.5}}
.fade-in{animation:fadeIn 0.4s ease;}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar{width:6px;height:6px;}
::-webkit-scrollbar-track{background:var(--bg-dark);}
::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:3px;}
::-webkit-scrollbar-thumb:hover{background:var(--primary);}

/* ===== DIVIDER ===== */
.divider{height:1px;background:var(--border);margin:16px 0;}

/* ===== INFO ROW ===== */
.info-row{display:flex;gap:8px;margin-bottom:10px;font-size:13px;}
.info-label{color:var(--text-secondary);min-width:140px;font-weight:500;}
.info-value{color:var(--text-primary);}

/* ===== TREATMENT TIMELINE ===== */
.timeline{position:relative;padding-left:24px;}
.timeline::before{content:'';position:absolute;left:8px;top:0;bottom:0;width:2px;background:var(--border);}
.timeline-item{position:relative;margin-bottom:16px;}
.timeline-dot{position:absolute;left:-20px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--primary);border:2px solid var(--bg-card);}
.timeline-content{background:var(--bg-card2);border-radius:var(--radius-sm);padding:12px;}
.timeline-date{font-size:11px;color:var(--text-muted);margin-bottom:4px;}
.timeline-text{font-size:13px;}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  .sidebar{position:fixed;left:-240px;height:100vh;transition:left 0.3s ease;}
  .sidebar.mobile-open{left:0;}
  .main-content{margin-left:0;}
  .grid-2,.grid-3{grid-template-columns:1fr;}
  .form-row,.form-row-3{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:1fr 1fr;}
}