*{box-sizing:border-box}
:root{
 --navy:#172033;--navy2:#202b44;--ink:#1f2937;--muted:#6b7280;--bg:#f5f7fa;
 --card:#fff;--accent:#5865f2;--accent2:#747cff;--green:#20a779;--line:#e4e8ef;
 --danger:#e55757;--amber:#f0a43a;
 font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif
}
body{margin:0;min-height:100vh;background:#f4f6fa;color:var(--ink)}
button,input,select{font:inherit}button{cursor:pointer}
.shell{min-height:100vh;display:grid;grid-template-columns:minmax(360px,.82fr) minmax(540px,1.18fr)}
.hero{padding:6vw;background:var(--navy);color:white;display:flex;flex-direction:column;justify-content:center;min-height:100vh;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:rgba(88,101,242,.17);right:-250px;bottom:-210px}
.brand-mark{width:58px;height:58px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),#8b5cf6);font-weight:900;margin-bottom:26px;box-shadow:0 18px 50px rgba(0,0,0,.2)}
.eyebrow{font-size:.76rem;font-weight:850;letter-spacing:.14em;color:#8ea0bd;margin:0 0 10px}
.hero h1{font-size:clamp(2.8rem,4.8vw,5.4rem);line-height:.98;margin:0;letter-spacing:-.055em;max-width:800px}
.hero-copy{max-width:650px;color:#c7d0de;font-size:1.08rem;line-height:1.7;margin:28px 0 34px}
.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;z-index:1}
.choice-card{border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);color:white;border-radius:20px;padding:17px;display:flex;gap:13px;text-align:left;align-items:center;transition:.2s}
.choice-card:hover{transform:translateY(-2px);background:rgba(255,255,255,.1)}
.choice-icon{font-size:1.65rem}.choice-card strong{display:block;margin-bottom:4px}.choice-card small{color:#aebbd0;line-height:1.3}
.flow-note{display:flex;gap:9px;flex-wrap:wrap;align-items:center;color:#8796ac;font-size:.82rem;margin-top:28px;z-index:1}.flow-note b{opacity:.5}
.panel{min-height:100vh;padding:5vw;display:flex;flex-direction:column;justify-content:center;background:linear-gradient(135deg,#fff,#f4f6fa)}
.panel-view{display:none;max-width:570px;width:100%;margin:0 auto}.panel-view.active{display:block}.panel-view.wide-view{max-width:820px}
.panel h2{font-size:2.15rem;letter-spacing:-.04em;margin:0 0 12px}.panel h3{letter-spacing:-.025em}.panel p{color:var(--muted);line-height:1.55}
.status-pill{display:inline-flex;background:#edf0ff;color:var(--accent);border-radius:999px;padding:7px 12px;font-size:.77rem;font-weight:800}
.back-btn{border:0;background:transparent;color:var(--muted);padding:0;margin-bottom:28px}
.tabs{display:flex;background:#eef1f6;border-radius:14px;padding:5px;margin:24px 0}.tab{flex:1;border:0;background:transparent;padding:11px;border-radius:10px;font-weight:750;color:var(--muted)}.tab.active{background:white;color:var(--ink);box-shadow:0 3px 12px rgba(23,32,51,.07)}
.form{display:none}.form.active{display:block}
label{display:block;font-weight:730;font-size:.9rem;margin-bottom:15px}
input,select{width:100%;margin-top:7px;border:1px solid #dce2eb;background:white;border-radius:13px;padding:13px 14px;outline:none}
input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(88,101,242,.1)}
.primary-btn,.secondary-btn,.ghost-btn,.danger-btn{border:0;border-radius:13px;font-weight:800}
.primary-btn{width:100%;padding:14px 17px;color:white;background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 10px 28px rgba(88,101,242,.18)}
.primary-btn.compact{width:auto;padding:12px 15px}.secondary-btn{padding:11px 14px;background:#edf0ff;color:var(--accent)}.ghost-btn{padding:10px 13px;background:#eef1f6;color:var(--ink)}
.form-note{font-size:.82rem}
.dashboard-top,.setup-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px}
.family-intro,.home-card,.student-card,.code-box,.read-only-note{border:1px solid var(--line);background:white;border-radius:18px;padding:18px;margin-bottom:14px}
.family-intro{display:flex;justify-content:space-between;align-items:center;gap:18px}.family-intro p{margin:5px 0 0}
.code-box{display:flex;justify-content:space-between;align-items:center;gap:16px;border-color:#cfd5ff;background:#f6f7ff}.code-box strong{font-size:1.65rem;letter-spacing:.08em;color:var(--accent);display:block;margin:5px 0}.code-box small{display:block;color:var(--muted)}
.hidden{display:none!important}.student-list{display:grid;gap:12px}.student-card{margin:0;display:flex;justify-content:space-between;align-items:center;gap:15px}.student-meta strong{display:block}.student-meta small{color:var(--muted)}.student-actions{display:flex;gap:8px;flex-wrap:wrap}
.read-only-note{background:#f8f9fb;color:#5c6676;font-size:.9rem}
.subject-entry{display:grid;grid-template-columns:1fr auto;gap:9px;align-items:end}.subject-entry input{margin:0}.chips{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 22px}.chip{border:0;background:#eef1ff;color:#4049bb;border-radius:999px;padding:8px 11px;font-weight:700;font-size:.85rem}.chip span{opacity:.55;margin-left:6px}
.setup-step{display:none}.setup-step.active{display:block}.schedule-days{display:grid;gap:14px}.day-card{background:white;border:1px solid var(--line);border-radius:17px;padding:15px}.day-card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.day-card h4{margin:0}.class-row{display:grid;grid-template-columns:minmax(180px,1.45fr) minmax(105px,.72fr) minmax(105px,.72fr) auto;gap:12px;align-items:end;margin:12px 0;padding-top:2px}.class-row select{margin:0;padding:11px 12px}.time-field{margin:0;font-size:.72rem;color:var(--muted);font-weight:800}.time-field span{display:block;margin:0 0 6px 2px}.time-field select{color:var(--ink);font-weight:650}.remove-row{width:38px;height:38px;border:0;border-radius:10px;background:#fff0f0;color:#a83232;font-weight:900}.add-class{border:0;background:transparent;color:var(--accent);font-weight:800;padding:6px 0}.setup-actions{display:flex;justify-content:space-between;align-items:center;margin-top:18px;gap:10px}
.student-home-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:14px}.home-card{margin:0}.home-card.main-card{grid-row:span 2;background:linear-gradient(135deg,#fff,#f6f7ff)}.tiny-label{font-size:.7rem;font-weight:850;letter-spacing:.12em;color:#8c99aa}.home-card h3{font-size:1.5rem;margin:8px 0 8px}.home-card strong{font-size:1.25rem}
.message-box{max-width:820px;width:100%;margin:16px auto 0;border-radius:12px;padding:0;font-size:.9rem}.message-box.show{padding:12px 14px;background:#eef1f6}.message-box.error{background:#fff0f0;color:#9f3030}.message-box.success{background:#ecfbf5;color:#126c4e}
@media(max-width:1000px){.shell{grid-template-columns:1fr}.hero{min-height:auto;padding:44px 24px 34px}.hero h1{font-size:3rem}.panel{min-height:auto;padding:38px 22px 60px}.choice-grid{max-width:650px}}
@media(max-width:650px){.choice-grid{grid-template-columns:1fr}.family-intro,.code-box,.student-card,.dashboard-top,.setup-head{align-items:stretch;flex-direction:column}.student-actions{width:100%}.student-actions button{flex:1}.subject-entry{grid-template-columns:1fr}.class-row{grid-template-columns:1fr 1fr auto;gap:9px}.class-row>.row-subject{grid-column:1/-1}.time-field select{width:100%}.student-home-grid{grid-template-columns:1fr}.home-card.main-card{grid-row:auto}.setup-actions{flex-direction:column-reverse}.setup-actions button{width:100%}}

/* v0.4 — selector de horario propio, independiente del navegador */
.time-picker{position:relative;min-width:118px}
.time-picker-btn{
  width:100%;min-height:46px;border:1px solid #dce2eb;background:#fff;border-radius:12px;
  padding:7px 10px;text-align:left;display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto;
  column-gap:8px;align-items:center;color:var(--ink)
}
.time-picker-btn span{grid-column:1;font-size:.68rem;color:var(--muted);font-weight:750;line-height:1}
.time-picker-btn strong{grid-column:1;font-size:.95rem;margin-top:3px}
.time-picker-btn b{grid-column:2;grid-row:1/3;font-size:1.1rem;color:#7c8798}
.time-picker.open .time-picker-btn{border-color:var(--accent);box-shadow:0 0 0 4px rgba(88,101,242,.1)}
.time-picker-menu{
  display:none;position:absolute;z-index:50;top:calc(100% + 6px);left:0;width:100%;max-height:220px;
  overflow-y:auto;background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px;
  box-shadow:0 14px 36px rgba(23,32,51,.16)
}
.time-picker.open .time-picker-menu{display:block}
.time-picker-menu button{
  width:100%;border:0;background:#fff;border-radius:8px;padding:9px 8px;text-align:center;color:var(--ink);font-weight:700
}
.time-picker-menu button:hover{background:#eef1ff;color:var(--accent)}
.class-row{grid-template-columns:minmax(170px,1.45fr) minmax(118px,.8fr) minmax(118px,.8fr) 40px;gap:10px}
.start-slot,.end-slot{min-width:0}
@media(max-width:650px){
  .class-row{grid-template-columns:1fr 1fr}
  .class-row .row-subject{grid-column:1/-1}
  .remove-row{grid-column:2;justify-self:end}
}