:root {
  --bg: #09090b;
  --card-bg: #18181b;     
  --card-hover: #27272a;  
  --accent: #10b981;      
  --accent-hover: #059669;
  --highlight: #0ea5e9;   
  --text: #f8fafc;
  --text-muted: #a1a1aa;
  --border: rgba(255, 255, 255, 0.08); 
  --success: #10b981;
  --danger: #f43f5e;      
  --warning: #f59e0b;
  --recovery: #8b5cf6;    
  --aerobic: #10b981;    
  --glycolytic: #f59e0b; 
  --atppc: #f43f5e;      
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Inter', system-ui, sans-serif; }
body { background: var(--bg); color: var(--text); padding: 16px; line-height: 1.5; font-size: 15px; }
.container { max-width: 1100px; margin: 0 auto; }

.view { display: none; opacity: 0; transition: opacity 0.3s ease; }
.view.active { display: block; opacity: 1; animation: fadeIn 0.3s ease forwards; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }

header { margin-bottom: 24px; border-bottom: 1px solid var(--border); padding-bottom: 16px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
h1 { font-size: 1.7rem; font-weight: 800; color: #fff; letter-spacing: -0.5px; margin-bottom: 4px; }
h2 { font-size: 1.3rem; margin-bottom: 16px; color: #fff; font-weight: 700; letter-spacing: -0.5px; }

.status-badge { font-size: 0.75rem; padding: 6px 14px; border-radius: 50px; display: inline-block; font-weight: 700; text-transform: uppercase; border: 1px solid rgba(255,255,255,0.1); margin-bottom: 16px;}

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 20px; border-radius: 50px; border: none; background-color: var(--accent); color: white; font-weight: 600; cursor: pointer; transition: all 0.2s ease; font-size: 0.9rem; text-decoration: none; box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2); }
.btn:hover { background-color: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3); }
.btn-wsp { background-color: #25D366; box-shadow: 0 4px 12px rgba(37, 211, 102, 0.2); }
.btn-wsp:hover { background-color: #1da851; }
.btn-success { background-color: var(--success); }
.btn-secondary { background-color: #27272a; box-shadow: none; color: #fff; border: 1px solid var(--border); }
.btn-secondary:hover { background-color: #3f3f46; }
.btn-danger { background-color: transparent; color: var(--danger); border: 1px solid rgba(244, 63, 94, 0.3); padding: 6px 12px; font-size: 0.8rem; box-shadow: none; }
.btn-warning { background-color: var(--warning); color: #000; box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2); }
.btn-info { background-color: var(--highlight); color: white; }
.btn-recovery { background-color: var(--recovery); color: white; }
.btn-icon { background: #27272a; border: 1px solid var(--border); color: #fff; cursor: pointer; padding: 6px 14px; border-radius: 50px; transition: 0.2s; }
.btn-icon:hover { background: var(--highlight); border-color: var(--highlight); }

.panel { background: var(--card-bg); border: 1px solid var(--border); border-radius: 20px; padding: 24px; margin-bottom: 24px; box-shadow: 0 10px 30px rgba(0,0,0,0.4); }
.form-group { margin-bottom: 16px; position: relative; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 12px; }
label { display: block; font-size: 0.75rem; font-weight: 700; margin-bottom: 6px; color: var(--text-muted); text-transform: uppercase; }
input, select, textarea { width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--border); background: var(--bg); color: #fff; font-size: 0.95rem; font-family: 'Inter', sans-serif;}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--highlight); box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15); }
.cb-label { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; background: var(--bg); padding: 10px 14px; border-radius: 12px; border: 1px solid var(--border); }
.cb-label input { width: auto; margin: 0; accent-color: var(--recovery); }

.home-hero { text-align: center; padding: 60px 20px; background: linear-gradient(145deg, var(--card-bg) 0%, var(--bg) 100%); border-radius: 24px; border: 1px solid var(--border); margin-top: 20px; }
.home-hero h1 { font-size: 3rem; color: #fff; font-weight: 800; letter-spacing: -1px; }
.roles-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; max-width: 700px; margin: 0 auto; }
.role-card { background: var(--bg); border: 1px solid var(--border); border-radius: 20px; padding: 36px 20px; text-align: center; cursor: pointer; transition: 0.3s; }
.role-card:hover { border-color: var(--highlight); transform: translateY(-6px); }

.patients-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; margin-top: 16px; }
.patient-card { background: var(--bg); border: 1px solid var(--border); border-left: 4px solid var(--highlight); border-radius: 16px; padding: 20px; display: flex; flex-direction: column; justify-content: space-between; transition:0.2s;}
.patient-card:hover { border-color: rgba(14, 165, 233, 0.5); transform: translateY(-2px); }

.action-bar { display: flex; gap: 10px; background: var(--card-bg); padding: 12px; border-radius: 16px; border: 1px solid var(--border); margin-bottom: 20px; flex-wrap: wrap; }
.patient-select-box { background: var(--bg); border: 1px solid var(--border); border-left: 4px solid var(--highlight); border-radius: 16px; padding: 16px 20px; margin-bottom: 20px; }
.grid { display: grid; grid-template-columns: 1fr 1.8fr; gap: 24px; }
@media (max-width: 850px) { .grid { grid-template-columns: 1fr; } }

.autocomplete-list { position: absolute; top: 100%; left: 0; right: 0; background: var(--card-bg); border: 1px solid var(--highlight); border-radius: 12px; z-index: 99; max-height: 180px; overflow-y: auto; }
.autocomplete-item { padding: 12px 16px; cursor: pointer; font-size: 0.9rem; border-bottom: 1px solid var(--border); color: #fff;}
.autocomplete-item:hover { background: var(--highlight); }

.exercise-card { background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 20px; margin-bottom: 16px; transition: 0.2s; }
.tag { display: inline-block; font-size: 0.65rem; text-transform: uppercase; background: rgba(14, 165, 233, 0.15); color: var(--highlight); padding: 4px 10px; border-radius: 50px; font-weight: 700; border: 1px solid rgba(14, 165, 233, 0.3); margin-bottom:10px;}
.tag-cardio { background: rgba(244, 63, 94, 0.15); color: var(--danger); border-color: rgba(244, 63, 94, 0.3); }
.tag-recovery { background: rgba(139, 92, 246, 0.15); color: var(--recovery); border-color: rgba(139, 92, 246, 0.3); }

.metrics-grid-kine { display: grid; grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); gap: 10px; background: var(--card-bg); padding: 12px; border-radius: 12px; margin: 12px 0; border: 1px solid var(--border); }
.metric-label-kine { font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase; display: block; margin-bottom:2px;}
.metric-val-kine { font-weight: 700; color: #fff; font-size: 1rem; }

.calendar-container { background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 16px; margin-bottom: 16px; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; text-align: center; margin-top: 14px; }
.calendar-day-head { font-size: 0.7rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; }
.calendar-day { background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px; min-height: 56px; padding: 6px; font-size: 0.85rem; font-weight: 600; cursor: pointer; display: flex; flex-direction: column; align-items: center; transition: all 0.2s ease;}
.calendar-day.today { border-color: var(--highlight); background: rgba(14, 165, 233, 0.1); }
.calendar-day:hover { border-color: var(--highlight); transform: translateY(-2px); box-shadow: 0 4px 10px rgba(14, 165, 233, 0.2);}
.day-badge { font-size: 0.6rem; border-radius: 50px; padding: 2px 6px; font-weight: 800; margin-top: 4px; }
.day-badge.done { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.day-badge.pending { background: rgba(255,255,255,0.1); color: #fff; }
.day-badge.pain { background: rgba(244, 63, 94, 0.2); color: var(--danger); }

.history-card { background: var(--bg); border: 1px solid var(--border); border-left: 4px solid var(--accent); padding: 16px; border-radius: 12px; margin-bottom: 12px; transition: border-color 0.4s ease; }
.history-details { display: none; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
.history-details.open { display: block; animation: fadeIn 0.4s ease; }
.global-history-header { cursor:pointer; display:flex; justify-content:space-between; align-items:center; transition: 0.2s; border-radius: 12px; padding: 8px; margin-left: -8px; margin-right: -8px;}
.global-history-header:hover { background: var(--card-hover); }

/* ====================================
   MODO ATLETA: DISEÑO PREMIUM Y ENFOQUE
   ==================================== */
.athlete-container { max-width: 500px; margin: 0 auto; }
.athlete-header { text-align: center; margin-bottom: 24px; background: var(--card-bg); padding: 24px; border-radius: 20px; border: 1px solid var(--border); }
.auth-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 24px; padding: 32px 24px; text-align: center; margin-bottom: 20px; }

/* Cronómetro Circular Flotante */
.premium-timer-wrapper { background: var(--card-bg); border: 1px solid var(--border); border-radius: 24px; padding: 32px 24px; text-align: center; margin-bottom: 24px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.sticky-timer-container { position: sticky; top: 10px; z-index: 100; box-shadow: 0 15px 35px rgba(0,0,0,0.8); border-color: var(--highlight); }
.timer-circle-container { position: relative; width: 160px; height: 160px; margin: 0 auto 20px auto; display: flex; align-items: center; justify-content: center; }
.progress-ring__circle { transition: stroke-dashoffset 1s linear; transform: rotate(-90deg); transform-origin: 50% 50%; }
.timer-display { position: absolute; font-size: 2.5rem; font-weight: 800; color: #fff; letter-spacing: -1px; text-shadow: 0 0 20px rgba(14, 165, 233, 0.4); }
.btn-timer { border-radius: 50px; padding: 8px 16px; font-size: 0.85rem; }

/* Estructura Tarjetas Modo Enfoque */
.athlete-card { background: linear-gradient(145deg, var(--card-bg) 0%, var(--bg) 100%); border: 1px solid var(--border); border-radius: 20px; margin-bottom: 20px; position: relative; overflow: hidden; box-shadow: 0 4px 20px rgba(0,0,0,0.3); transition: 0.3s; padding: 0; }
.athlete-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--highlight); transition: 0.3s;}
.athlete-card.done { border-color: rgba(16, 185, 129, 0.3); opacity: 0.8; }
.athlete-card.done::before { background: var(--success); }
.athlete-card.done h3 { text-decoration: line-through; color: var(--text-muted); }

.athlete-card-header { padding: 16px 20px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; background: transparent; transition: 0.2s; }
.athlete-card-header:active { background: rgba(255,255,255,0.05); }
.athlete-card-body { padding: 0 20px 20px 20px; display: none; border-top: 1px solid var(--border); }
.athlete-card.open .athlete-card-body { display: block; animation: fadeIn 0.3s ease; }

.card-toggle-icon { font-size: 1.2rem; transition: transform 0.3s ease; background: var(--card-hover); width: 35px; height: 35px; display: flex; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid var(--border); }
.athlete-card.open .card-toggle-icon { transform: rotate(180deg); background: var(--highlight); border-color: var(--highlight); color: #fff;}
.compact-metrics { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; font-weight: 600; }

.metrics-grid-athlete { display: grid; grid-template-columns: repeat(auto-fit, minmax(80px, 1fr)); gap: 8px; margin: 16px 0; }
.metric-box-athlete { background: #27272a; padding: 10px; border-radius: 12px; text-align: center; border: 1px solid rgba(255,255,255,0.05); }
.metric-label-athlete { font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase; display: block; margin-bottom:2px; font-weight: 700; letter-spacing: 0.5px;}
.metric-val-athlete { font-weight: 800; color: #fff; font-size: 1.1rem; }

/* Video Embed */
.video-wrapper { margin: 12px 0; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); box-shadow: 0 4px 15px rgba(0,0,0,0.3); background: #000; position: relative; padding-bottom: 56.25%; height: 0; }
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; }
.btn-video-link { width: 100%; margin-top: 12px; background: rgba(14, 165, 233, 0.1); border: 1px solid var(--highlight); color: var(--highlight); font-size: 0.9rem; padding: 12px; border-radius: 12px; font-weight: 700; text-align: center; display: block; text-decoration: none; transition: 0.2s;}
.btn-video-link:hover { background: var(--highlight); color: #fff; }

.check-btn { width: 100%; padding: 16px; margin-top: 16px; border-radius: 12px; font-weight: 800; border: none; cursor: pointer; font-size: 1.05rem; transition: 0.2s; text-transform: uppercase; letter-spacing: 1px;}
.check-btn.completed { background: rgba(16, 185, 129, 0.15); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.3); }
.check-btn.completed:hover { background: rgba(16, 185, 129, 0.25); }
.check-btn.pending { background: var(--accent); color: white; box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2); }
.check-btn.pending:hover { background: var(--accent-hover); transform: translateY(-2px); }

/* Listas y Menús */
.accordion-header { background: var(--card-bg); padding: 20px; font-weight: 700; cursor: pointer; display: flex; justify-content: space-between; border-radius:16px; }
.session-list-card { background: var(--card-bg); border-left: 4px solid var(--accent); padding: 20px; border-radius: 16px; margin-bottom: 12px; cursor: pointer; border-top: 1px solid var(--border); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); transition: all 0.3s ease; }
.session-list-card:hover { border-color: var(--highlight); transform: translateX(4px); box-shadow: -4px 10px 20px rgba(0,0,0,0.3); background: var(--card-hover); }
.session-icon { font-size: 1.5rem; background: var(--bg); padding: 10px; border-radius: 12px; border: 1px solid var(--border); }

/* Tabs Generales */
.tabs { display: flex; gap: 8px; margin-bottom: 20px; border-bottom: 1px solid var(--border); padding-bottom: 12px; flex-wrap: wrap; }
.tab-btn { background: transparent; color: var(--text-muted); border: none; padding: 10px 20px; border-radius: 50px; cursor: pointer; font-weight: 600; }
.tab-btn.active { background: var(--bg); color: #fff; border: 1px solid var(--border); }
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.3s ease; }
.main-tabs .tab-btn { font-size: 1.05rem; padding: 14px 28px; background: var(--card-bg); border: 1px solid var(--border); }
.main-tabs .tab-btn.active { background: var(--highlight); color: #fff; border-color: var(--highlight); box-shadow: 0 4px 15px rgba(14, 165, 233, 0.4); }

/* Elementos Extra */
.energy-bar-container { display: flex; height: 28px; border-radius: 50px; overflow: hidden; margin-top: 14px; background: var(--bg); border: 1px solid var(--border); }
.energy-bar-segment { display: flex; align-items: center; justify-content: center; font-size: 0.7rem; font-weight: 800; color: #fff; transition: width 0.8s; }
.badge-tonelaje { background: rgba(245, 158, 11, 0.1); color: var(--warning); border:1px solid rgba(245, 158, 11, 0.3); padding: 8px 16px; border-radius: 50px; font-weight: 800; }

.body-map-wrapper { background: var(--bg); border: 1px solid var(--border); border-radius: 16px; padding: 20px; margin: 16px 0; }
.body-svg { width: 100%; height: auto; display: block; }
.body-zone { fill: #27272a; stroke: #52525b; stroke-width: 2; cursor: pointer; }
.body-zone.selected { fill: var(--danger) !important; stroke: #fff !important; stroke-width: 3; filter: drop-shadow(0 0 8px rgba(244, 63, 94, 0.6)); }

#toastContainer { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 12px; pointer-events: none; }
.toast-alert { background: var(--card-bg); border-left: 6px solid var(--success); color: #fff; padding: 16px 20px; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.6); border-top: 1px solid var(--border); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); min-width: 280px; max-width: 350px; animation: slideInRight 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards; pointer-events: auto; }
@keyframes slideInRight { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

input[type=range] { -webkit-appearance: none; width: 100%; background: transparent; }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; height: 20px; width: 20px; border-radius: 50%; background: #fff; cursor: pointer; margin-top: -8px; box-shadow: 0 0 10px rgba(0,0,0,0.5); }
input[type=range]::-webkit-slider-runnable-track { width: 100%; height: 4px; cursor: pointer; background: var(--border); border-radius: 2px; }
.wellness-box { background: var(--card-bg); border: 1px solid var(--border); border-top: none; padding: 24px; border-radius: 0 0 16px 16px; margin-top: -8px; }
.wellness-item { margin-bottom: 16px; background: var(--bg); padding: 16px; border-radius: 12px; border: 1px solid var(--border); }