/* =====================================================================
   Estúdio de Estudo — estilos partilhados
   Cores escolhidas com base em investigação sobre leitura e atenção:
   fundo creme (nunca branco puro, que encandeia), texto quase-preto
   (nunca preto puro), verde-azulado como cor principal (calmante).
   ===================================================================== */

:root{
  /* Esquema CREME (por omissão) */
  --bg:#FAF7F1;
  --bg-alt:#F1EBDF;
  --surface:#FFFFFF;
  --surface-2:#F5EFE3;   /* superfície de leitura — cartões de estudo */
  --ink:#2E2B26;
  --ink-soft:#6B6459;
  --line:#E4DCC9;

  --teal:#3D7068;
  --teal-soft:#DCEAE6;
  --amber:#E0932E;        /* decorativo */
  --amber-strong:#996117; /* texto/botões — passa contraste AA */
  --coral:#D9765A;
  --sage:#7A9C7E;
  --danger:#C4634B;

  --shadow: 0 2px 10px rgba(46,43,38,0.06), 0 1px 2px rgba(46,43,38,0.05);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;

  --font-body:'Atkinson Hyperlegible','Segoe UI',Tahoma,sans-serif;
  --font-head:'Quicksand','Trebuchet MS',sans-serif;
}

:root[data-scheme="azul"]{
  --bg:#EFF4F7; --bg-alt:#E4ECF1; --surface-2:#E8F0F4; --line:#D2E1E8;
}
:root[data-scheme="verde"]{
  --bg:#F0F6EE; --bg-alt:#E6EFE3; --surface-2:#EAF2E7; --line:#D6E6D1;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#1E1C18; --bg-alt:#26231D; --surface:#2A2722; --surface-2:#332E27;
    --ink:#F1ECE0; --ink-soft:#B8AF9E; --line:#3C382F;
    --teal:#6FB3A8; --teal-soft:#2A3B37;
    --amber:#EFA847; --amber-strong:#A56818;
    --coral:#E38A6E; --sage:#93B896; --danger:#E38A6E;
    --shadow: 0 2px 10px rgba(0,0,0,0.35);
  }
  :root[data-scheme="azul"]{ --bg:#181D20; --bg-alt:#1F262A; --surface:#232A2E; --surface-2:#242E32; --line:#2E3A3F; }
  :root[data-scheme="verde"]{ --bg:#191E17; --bg-alt:#20271D; --surface:#242B21; --surface-2:#252E20; --line:#2F3B28; }
}

/* ---------------------------------------------------------------- base */
*{box-sizing:border-box;}
html,body{margin:0; padding:0;}
html{ scroll-padding-top: env(safe-area-inset-top, 0px); }
body{
  background:var(--bg); color:var(--ink);
  font-family:var(--font-body); font-size:16.5px; line-height:1.55;
  -webkit-font-smoothing:antialiased;
  min-height:100vh; overscroll-behavior-y:none;
}
h1,h2,h3{font-family:var(--font-head); font-weight:700; margin:0; color:var(--ink);}
button{font-family:var(--font-body); cursor:pointer; color:var(--ink);}
input,select,textarea{font-family:var(--font-body); color:var(--ink);}
a{color:var(--teal);}
img{max-width:100%;}
:focus-visible{outline:3px solid var(--teal); outline-offset:2px;}
.hidden{display:none !important;}
.sr-only{position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0);}

/* -------------------------------------------------------------- botões */
.btn{
  border-radius:var(--radius-sm); border:1px solid transparent;
  padding:13px 18px; font-weight:700; font-family:var(--font-head); font-size:15.5px;
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  text-decoration:none;
}
.btn:active:not(:disabled){transform:scale(0.98);}
.btn:disabled{opacity:.45; cursor:default;}
.btn-primary{background:var(--teal); color:#fff;}
.btn-secondary{background:var(--surface); color:var(--ink); border-color:var(--line);}
.btn-ghost{background:transparent; color:var(--teal);}
.btn-danger{background:var(--surface); color:var(--danger); border-color:var(--line);}
.btn-block{width:100%;}
.btn-sm{padding:8px 12px; font-size:13.5px; border-radius:8px;}

.icon-btn{
  width:44px; height:44px; border-radius:50%;
  border:1px solid var(--line); background:var(--surface); color:var(--ink);
  display:inline-flex; align-items:center; justify-content:center; font-size:18px;
  flex-shrink:0;
}
.icon-btn:active{transform:scale(0.94);}

/* --------------------------------------------------------------- chips */
.chip-row{display:flex; flex-wrap:wrap; gap:9px;}
.chip{
  padding:11px 15px; border-radius:13px;
  background:var(--surface); border:1px solid var(--line); color:var(--ink);
  font-size:15px; font-weight:600;
  display:inline-flex; align-items:center; gap:8px;
}
.chip.selected{background:var(--teal); color:#fff; border-color:var(--teal);}
.chip .dot{width:10px; height:10px; border-radius:50%; flex-shrink:0;}

/* -------------------------------------------------------------- cartão */
.card{
  background:var(--surface); border:1px solid var(--line);
  border-radius:var(--radius-lg); padding:20px; box-shadow:var(--shadow);
}

/* --------------------------------------------------------------- campos */
.field{display:flex; flex-direction:column; gap:6px; margin-bottom:14px;}
.field label{font-size:13.5px; font-weight:700; color:var(--ink-soft); font-family:var(--font-head);}
/* Todos os campos de texto seguem o tema. Listar por exclusão (em vez de
   enumerar cada tipo) evita que um tipo novo fique esquecido, como já
   aconteceu com o date e o time. */
.field input:not([type=checkbox]):not([type=radio]):not([type=range]):not([type=file]),
.field select,
.field textarea{
  border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:12px 13px; font-size:15.5px;
  background:var(--surface); color:var(--ink); font-family:var(--font-body);
  width:100%;
}
.field textarea{min-height:120px; resize:vertical; line-height:1.5;}
.field input[type=date], .field input[type=time]{ color-scheme:light; }
@media (prefers-color-scheme: dark){
  .field input[type=date], .field input[type=time]{ color-scheme:dark; }
}

.note{font-size:13px; color:var(--ink-soft); line-height:1.5;}
.error-text{font-size:13.5px; color:var(--danger);}

/* --------------------------------------------------------- barra/nível */
.bar-track{height:12px; border-radius:8px; background:var(--surface-2); overflow:hidden;}
.bar-fill{height:100%; background:linear-gradient(90deg, var(--teal), var(--sage)); border-radius:8px; transition:width .45s ease;}

/* -------------------------------------------------------------- tabela */
.table-scroll{overflow-x:auto; -webkit-overflow-scrolling:touch;}
table{width:100%; border-collapse:collapse;}
th{
  text-align:left; font-family:var(--font-head); font-size:12.5px;
  color:var(--ink-soft); padding:9px 10px; border-bottom:1px solid var(--line);
  white-space:nowrap;
}
td{padding:10px; border-bottom:1px solid var(--line); font-size:14.5px; vertical-align:top;}
tr:last-child td{border-bottom:none;}
.empty-row td{color:var(--ink-soft); font-style:italic;}

/* ------------------------------------------------- diálogos (próprios) */
/* Substituem alert/confirm/prompt do sistema, que não seguem o tema. */
.overlay{
  position:fixed; inset:0; z-index:60;
  background:rgba(20,18,15,0.55);
  display:flex; align-items:flex-end; justify-content:center;
  padding-top:env(safe-area-inset-top, 0px);
}
.overlay.hidden{display:none;}
.sheet{
  background:var(--bg); width:100%; max-width:540px;
  border-radius:22px 22px 0 0;
  padding:0 20px calc(22px + env(safe-area-inset-bottom));
  max-height:88vh; overflow-y:auto; -webkit-overflow-scrolling:touch;
  display:flex; flex-direction:column; gap:14px;
}
.sheet-head{
  position:sticky; top:0; z-index:2; background:var(--bg);
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:18px 0 12px; border-bottom:1px solid var(--line);
}
.sheet-head h2{font-size:19px;}
.sheet-actions{display:flex; gap:10px; margin-top:4px;}
.sheet-actions .btn{flex:1;}

/* ---------------------------------------------------------------- toast */
.toast{
  position:fixed; left:50%; transform:translateX(-50%);
  top:calc(16px + env(safe-area-inset-top, 0px));
  z-index:80; max-width:88%;
  background:var(--ink); color:var(--bg);
  padding:12px 20px; border-radius:14px;
  font-size:14.5px; font-weight:600; text-align:center;
  box-shadow:0 6px 18px rgba(0,0,0,0.25);
  opacity:0; pointer-events:none; transition:opacity .25s ease, transform .25s ease;
}
.toast.show{opacity:1; transform:translateX(-50%) translateY(4px);}

/* -------------------------------------------------------------- PC/desktop */
@media (min-width: 900px){
  .overlay{align-items:center; padding:24px;}
  .sheet{
    max-width:580px; border-radius:20px; max-height:84vh;
    padding:0 26px 26px; box-shadow:0 14px 44px rgba(0,0,0,0.28);
  }
  .sheet-head{padding:22px 0 14px;}
}

/* --------------------------------------------- movimento reduzido */
@media (prefers-reduced-motion: reduce){
  .bar-fill{transition:none;}
  *{animation-duration:.001ms !important; animation-iteration-count:1 !important;}
}

@keyframes confettiFall{ to{ transform:translateY(110vh) rotate(480deg); opacity:.15; } }

/* ---------------------------------------- seletor de data próprio */
.cal-topo{display:flex; align-items:center; justify-content:space-between; gap:10px;}
.cal-titulo{font-family:var(--font-head); font-weight:700; font-size:16px;}
.cal-grelha{display:grid; grid-template-columns:repeat(7,1fr); gap:5px;}
.cal-cab{
  text-align:center; font-size:11.5px; color:var(--ink-soft);
  font-family:var(--font-head); font-weight:700; padding:4px 0;
}
.cal-dia{
  aspect-ratio:1; border-radius:10px; border:1px solid transparent;
  background:var(--surface); color:var(--ink);
  font-size:14.5px; font-family:var(--font-body);
  display:flex; align-items:center; justify-content:center;
}
.cal-dia:hover:not(:disabled){border-color:var(--line);}
.cal-dia.hoje{border-color:var(--teal); font-weight:700;}
.cal-dia.escolhido{background:var(--teal); color:#fff; border-color:var(--teal); font-weight:700;}
.cal-dia:disabled{opacity:.28;}

/* ------------------------------------------ imagem dentro do cartão */
.img-cartao{
  max-width:100%; max-height:260px; border-radius:12px;
  background:var(--surface); border:1px solid var(--line);
  object-fit:contain;
}
@media (min-width: 900px){ .img-cartao{ max-height:320px; } }
.img-cartao.ampliada{
  position:fixed; inset:0; z-index:95; margin:auto;
  max-width:96vw; max-height:92vh; background:var(--bg);
  box-shadow:0 10px 40px rgba(0,0,0,.4); cursor:zoom-out;
}