/* ===== RESET & BASE ===== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
:root {
  --primary: #1a237e; --primary-light: #3f51b5; --primary-dark: #0d1452;
  --bg: #f0f2f5; --surface: #fff; --text: #1a1a2e; --text-secondary: #5f6368;
  --border: #dadce0; --success: #2e7d32; --warning: #e65100; --danger: #c62828;
  --sidebar-w: 250px; --header-h: 60px; --radius: 10px; --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
body { font-family: var(--font); background: var(--bg); color: var(--text); height: 100vh; overflow: hidden; }
input, select, textarea, button { font-family: inherit; }
a { text-decoration: none; color: inherit; }

/* ===== SCREENS ===== */
.screen { display: none; width: 100%; height: 100vh; }
.screen.active { display: flex; }

/* ===== LOGIN ===== */
#login-screen { align-items:center; justify-content:center; position:relative; }
.login-bg { position:absolute; inset:0; background:linear-gradient(135deg,#1a237e 0%,#283593 50%,#3949ab 100%); }
.login-card { position:relative; background:var(--surface); border-radius:16px; padding:40px; width:400px; max-width:90vw; box-shadow:0 20px 60px rgba(0,0,0,0.3); }
.login-logo { text-align:center; margin-bottom:30px; }
.login-logo h1 { font-size:24px; color:var(--primary); margin-top:12px; }
.login-subtitle { font-size:13px; color:var(--text-secondary); margin-top:4px; }
.login-form { display:flex; flex-direction:column; gap:16px; }
.login-form .field { display:flex; flex-direction:column; gap:4px; }
.login-form label { font-size:13px; font-weight:500; color:var(--text-secondary); }
.login-form input { padding:12px 14px; border:1px solid var(--border); border-radius:8px; font-size:14px; transition:border-color .2s; }
.login-form input:focus { outline:none; border-color:var(--primary); box-shadow:0 0 0 3px rgba(26,35,126,0.1); }
.login-error { color:var(--danger); font-size:13px; text-align:center; min-height:20px; }

/* ===== BUTTONS ===== */
.btn { padding:10px 20px; border:none; border-radius:8px; font-size:14px; font-weight:500; cursor:pointer; transition:all .2s; display:inline-flex; align-items:center; gap:6px; justify-content:center; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-light); }
.btn-block { width:100%; padding:12px; font-size:15px; }
.btn-sm { padding:6px 12px; font-size:12px; }
.btn-outline { background:transparent; border:1px solid var(--border); color:var(--text); }
.btn-outline:hover { background:#f5f5f5; }
.btn-icon { width:36px; height:36px; padding:0; border-radius:50%; background:transparent; border:1px solid var(--border); cursor:pointer; display:flex; align-items:center; justify-content:center; font-size:16px; }
.btn-icon:hover { background:#f0f0f0; }

/* ===== APP LAYOUT ===== */
#app-screen { flex-direction:row; }

/* ===== SIDEBAR ===== */
.sidebar { width:var(--sidebar-w); background:var(--primary); color:#fff; display:flex; flex-direction:column; flex-shrink:0; }
.sidebar-header { display:flex; align-items:center; gap:10px; padding:16px 18px; border-bottom:1px solid rgba(255,255,255,0.1); }
.sidebar-title { font-size:16px; font-weight:600; }
.sidebar-nav { flex:1; padding:12px 0; display:flex; flex-direction:column; gap:2px; }
.nav-item { display:flex; align-items:center; gap:10px; padding:10px 18px; font-size:13px; color:rgba(255,255,255,0.7); transition:all .2s; cursor:pointer; border:none; background:none; text-align:left; width:100%; }
.nav-item:hover { background:rgba(255,255,255,0.1); color:#fff; }
.nav-item.active { background:rgba(255,255,255,0.15); color:#fff; font-weight:500; border-right:3px solid #fff; }
.nav-icon { font-size:18px; width:24px; text-align:center; }
.sidebar-footer { border-top:1px solid rgba(255,255,255,0.1); padding:12px 16px; }
.sidebar-user { display:flex; align-items:center; gap:10px; margin-bottom:8px; }
.user-avatar { width:36px; height:36px; border-radius:50%; background:var(--primary-light); display:flex; align-items:center; justify-content:center; font-size:14px; font-weight:600; }
.user-name { font-size:13px; font-weight:500; }
.user-role { font-size:11px; opacity:.7; }
.logout { padding:8px 16px; font-size:12px; color:rgba(255,255,255,0.6); }

/* ===== MAIN CONTENT ===== */
.main-content { flex:1; display:flex; flex-direction:column; overflow:hidden; }
.page-header { display:flex; align-items:center; justify-content:space-between; padding:16px 28px; background:var(--surface); border-bottom:1px solid var(--border); flex-shrink:0; }
.page-header h2 { font-size:20px; font-weight:600; }
.header-date { font-size:13px; color:var(--text-secondary); }
.page-body { flex:1; padding:24px 28px; overflow-y:auto; }

/* ===== CARDS ===== */
.card { background:var(--surface); border-radius:var(--radius); padding:20px; box-shadow:var(--shadow); }
.card-title { font-size:14px; font-weight:600; color:var(--text-secondary); margin-bottom:12px; text-transform:uppercase; letter-spacing:.5px; }

/* ===== STATS GRID ===== */
.stats-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(200px, 1fr)); gap:16px; margin-bottom:24px; }
.stat-card { background:var(--surface); border-radius:var(--radius); padding:20px; box-shadow:var(--shadow); display:flex; align-items:center; gap:16px; }
.stat-icon { width:48px; height:48px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:24px; flex-shrink:0; }
.stat-icon.blue { background:#e8eaf6; } .stat-icon.green { background:#e8f5e9; } .stat-icon.orange { background:#fff3e0; } .stat-icon.purple { background:#f3e5f5; }
.stat-info h3 { font-size:28px; font-weight:700; line-height:1; }
.stat-info p { font-size:13px; color:var(--text-secondary); margin-top:4px; }

/* ===== TABLE ===== */
.table-wrap { overflow-x:auto; }
table { width:100%; border-collapse:collapse; font-size:13px; }
th { text-align:left; padding:10px 12px; color:var(--text-secondary); font-weight:500; font-size:12px; text-transform:uppercase; letter-spacing:.5px; border-bottom:2px solid var(--border); }
td { padding:10px 12px; border-bottom:1px solid var(--border); }
tr:hover td { background:#f8f9fa; }
.badge { display:inline-block; padding:2px 8px; border-radius:12px; font-size:11px; font-weight:500; }
.badge-a { background:#e3f2fd; color:#1565c0; }
.badge-b { background:#fff3e0; color:#e65100; }

/* ===== FORM ===== */
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-grid .full { grid-column:1/-1; }
.form-group { display:flex; flex-direction:column; gap:4px; }
.form-group label { font-size:12px; font-weight:500; color:var(--text-secondary); }
.form-group input, .form-group select, .form-group textarea { padding:10px 12px; border:1px solid var(--border); border-radius:8px; font-size:14px; transition:border-color .2s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline:none; border-color:var(--primary); box-shadow:0 0 0 3px rgba(26,35,126,0.1); }
.form-group textarea { resize:vertical; min-height:70px; }
.form-actions { display:flex; gap:12px; justify-content:flex-end; margin-top:20px; }

/* ===== CHAT ===== */
.chat-container { display:flex; gap:16px; height:calc(100vh - var(--header-h) - 48px - 48px); }
.chat-sidebar { width:220px; flex-shrink:0; background:var(--surface); border-radius:var(--radius); box-shadow:var(--shadow); display:flex; flex-direction:column; overflow:hidden; }
.chat-sidebar-header { padding:12px 14px; border-bottom:1px solid var(--border); font-size:13px; font-weight:600; display:flex; justify-content:space-between; align-items:center; }
.chat-sessions { flex:1; overflow-y:auto; }
.chat-session-item { padding:10px 14px; font-size:12px; cursor:pointer; border-bottom:1px solid var(--border); transition:background .2s; }
.chat-session-item:hover { background:#f8f9fa; }
.chat-session-item .btn-session-del { background:none; border:none; cursor:pointer; font-size:11px; color:var(--text-secondary); padding:2px 4px; border-radius:4px; opacity:0; transition:all .2s; flex-shrink:0; }
.chat-session-item:hover .btn-session-del { opacity:1; }
.chat-session-item .btn-session-del:hover { background:#ffebee; color:var(--danger); }
.chat-session-item.active { background:#e8eaf6; }
.chat-session-item .session-title { font-weight:500; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.chat-session-item .session-date { font-size:11px; color:var(--text-secondary); margin-top:2px; }
.chat-main { flex:1; display:flex; flex-direction:column; background:var(--surface); border-radius:var(--radius); box-shadow:var(--shadow); overflow:hidden; }
.chat-messages { flex:1; overflow-y:auto; padding:20px; display:flex; flex-direction:column; gap:16px; }
.chat-msg { display:flex; gap:10px; max-width:80%; }
.chat-msg.user { align-self:flex-end; flex-direction:row-reverse; }
.chat-msg.bot { align-self:flex-start; }
.chat-msg .avatar { width:32px; height:32px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:14px; flex-shrink:0; }
.chat-msg.user .avatar { background:#e8eaf6; }
.chat-msg.bot .avatar { background:#fff3e0; }
.chat-msg .bubble { padding:12px 16px; border-radius:12px; font-size:13px; line-height:1.5; }
.chat-msg.user .bubble { background:var(--primary); color:#fff; border-bottom-right-radius:4px; }
.chat-msg.bot .bubble { background:#f0f2f5; border-bottom-left-radius:4px; }
.chat-msg.bot .bubble p { margin-bottom:6px; }
.chat-msg.bot .bubble p:last-child { margin-bottom:0; }
.chat-input-area { display:flex; gap:8px; padding:16px; border-top:1px solid var(--border); }
.chat-input-area input { flex:1; padding:12px 16px; border:1px solid var(--border); border-radius:24px; font-size:14px; }
.chat-input-area input:focus { outline:none; border-color:var(--primary); }
.chat-input-area button { width:44px; height:44px; border-radius:50%; border:none; background:var(--primary); color:#fff; cursor:pointer; font-size:18px; transition:background .2s; display:flex; align-items:center; justify-content:center; }
.chat-input-area button:hover { background:var(--primary-light); }
.chat-input-area button:disabled { background:#ccc; cursor:not-allowed; }
.thinking { display:flex; align-items:center; gap:8px; padding:12px 16px; background:#f0f2f5; border-radius:12px; font-size:13px; color:var(--text-secondary); align-self:flex-start; max-width:200px; }
.thinking-dots { display:flex; gap:3px; }
.thinking-dots span { width:6px; height:6px; border-radius:50%; background:#999; animation:bounce 1.4s infinite; }
.thinking-dots span:nth-child(2) { animation-delay:.2s; }
.thinking-dots span:nth-child(3) { animation-delay:.4s; }
@keyframes bounce { 0%,80%,100% { transform:scale(0); } 40% { transform:scale(1); } }

/* ===== PACIENTES LIST ===== */
.pacientes-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:16px; gap:12px; flex-wrap:wrap; }
.pacientes-header input { padding:8px 14px; border:1px solid var(--border); border-radius:8px; font-size:13px; flex:1; max-width:300px; }
.pacientes-header input:focus { outline:none; border-color:var(--primary); }

/* ===== INGESTA ===== */
.ingesta-drop { border:2px dashed var(--border); border-radius:var(--radius); padding:60px 20px; text-align:center; cursor:pointer; transition:all .3s; margin-bottom:20px; }
.ingesta-drop:hover, .ingesta-drop.dragover { border-color:var(--primary); background:#e8eaf6; }
.ingesta-drop-icon { font-size:48px; margin-bottom:12px; }
.ingesta-drop p { color:var(--text-secondary); }
.ingesta-progress { margin-top:20px; }
.progress-bar { height:8px; background:#e0e0e0; border-radius:4px; overflow:hidden; margin-bottom:16px; }
.progress-fill { height:100%; background:linear-gradient(90deg,var(--primary),var(--primary-light)); border-radius:4px; transition:width .5s ease; }
.ingesta-steps { display:flex; flex-direction:column; gap:8px; }
.ingesta-step { display:flex; align-items:center; gap:10px; padding:8px 12px; border-radius:6px; font-size:13px; }
.ingesta-step.done { background:#e8f5e9; color:var(--success); }
.ingesta-step.active { background:#e8eaf6; color:var(--primary); font-weight:500; }
.ingesta-step.pending { color:var(--text-secondary); }
.step-icon { font-size:16px; width:20px; text-align:center; }

/* ===== TOAST ===== */
.toast { position:fixed; bottom:30px; right:30px; background:#333; color:#fff; padding:14px 24px; border-radius:8px; font-size:13px; z-index:9999; opacity:0; transform:translateY(20px); transition:all .3s; pointer-events:none; }
.toast.show { opacity:1; transform:translateY(0); }
.toast.success { background:var(--success); }
.toast.error { background:var(--danger); }

/* ===== RESPONSIVE ===== */
@media (max-width:768px) {
  .sidebar { width:60px; }
  .sidebar-title, .nav-item span:not(.nav-icon), .sidebar-user .user-name, .sidebar-user .user-role, .logout span { display:none; }
  .sidebar-nav { padding:8px 0; }
  .nav-item { padding:10px; justify-content:center; }
  .sidebar-footer { padding:8px; }
  .sidebar-user { justify-content:center; }
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  .chat-container { flex-direction:column; }
  .chat-sidebar { width:100%; max-height:150px; }
  .form-grid { grid-template-columns:1fr; }
}