/* =========================
   iSEMED • Loader styles
   ========================= */

/* Paleta e tokens */
:root{
  --primary:        #000099;
  --primary-600:    #0012b8;
  --primary-400:    #3d5afe;
  --primary-50:     #eef2ff;

  --text:           #1b1f3b;
  --text-muted:     #6b7280;

  --bg:             #ffffff;

  --radius:         14px;
  --shadow-md:      0 10px 30px rgba(16,24,40,.08);
  --shadow-lg:      0 20px 60px rgba(16,24,40,.12);

  --ease:           cubic-bezier(.25,.8,.25,1);
}

/* Reset essencial */
*{ box-sizing:border-box }
html,body{ height:100% }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color:var(--text);
  background: var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow:hidden; /* evita scroll enquanto carrega */
}

/* =========================
   OVERLAY (fundo animado)
   ========================= */
.loader-overlay{
  position:fixed; inset:0; z-index:9999;
  display:grid; place-items:center;
  background: var(--bg);
  /* camada animada de cor */
  isolation:isolate; /* garante blending correto */
}
.loader-overlay::before{
  content:"";
  position:absolute; inset:-10%;
  z-index:-1;
  /* mosaico de gradientes suaves (sem preto) */
  background:
    radial-gradient(800px 600px at 12% 10%, rgba(0,17,153,.10), transparent 60%),
    radial-gradient(700px 500px at 85% 88%, rgba(61,90,254,.12), transparent 55%),
    radial-gradient(900px 700px at 35% 80%, rgba(0,153,255,.10), transparent 55%),
    linear-gradient(180deg, #ffffff 0%, #f9fbff 100%);
  /* animações sutis */
  filter: hue-rotate(0deg) saturate(1.02);
  animation:
    hue 18s linear infinite,
    floaty 14s ease-in-out infinite alternate;
  opacity:.9;
  border-radius: 6vmax;
}
.loader-overlay.hidden{
  opacity:0; visibility:hidden;
  transition: opacity .45s var(--ease), visibility .45s var(--ease);
}

/* =========================
   CONTEÚDO
   ========================= */
.logo-container{
  text-align:center;
  margin-bottom: 14px;
  animation: fadeIn .6s var(--ease) both;
}
.logo-container h1{
  margin:0;
  font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem);
  font-weight: 800;
  letter-spacing:-.02em;
  color: var(--primary);
  text-shadow: 0 1px 0 rgba(255,255,255,.8);
}
.logo-container p{
  margin:.35rem 0 0 0;
  color: var(--text-muted);
  font-weight:600;
  letter-spacing:.01em;
}

/* CARTÃO (opcional: dá destaque sem “caixa” pesada) */
.loader-card{
  background: rgba(255,255,255,.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border:1px solid rgba(0,0,0,.06);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 22px 22px 18px;
  animation: rise .7s var(--ease) .05s both;
}

/* =========================
   SPINNER (conic-gradient)
   ========================= */
.spinner-container{ display:flex; justify-content:center; margin: 6px 0 12px; }

.spinner{
  --size: 66px;
  inline-size: var(--size);
  block-size: var(--size);
  border-radius:50%;
  background:
    radial-gradient(farthest-side, #0000 58%, rgba(0,0,0,.06) 60%, #0000 62%) center/100% 100% no-repeat,
    conic-gradient(from 0turn, var(--primary-400), var(--primary), var(--primary-400));
  mask: radial-gradient(farthest-side, #0000 calc(100% - 10px), #000 0);
  -webkit-mask: radial-gradient(farthest-side, #0000 calc(100% - 10px), #000 0);
  animation: spin 1s linear infinite;
  box-shadow: 0 0 0 6px rgba(255,255,255,.7) inset;
  position:relative;
}
.spinner::after{
  content:"";
  position:absolute; inset:10px;
  border-radius:50%;
  background: linear-gradient(180deg, #fff 0%, #fafcff 100%);
  box-shadow: inset 0 8px 16px rgba(16,24,40,.06);
}

/* =========================
   TEXTO DE STATUS
   ========================= */
.loading-text{
  text-align:center;
  font-weight:700;
  color: var(--text);
  min-height: 1.5rem;
  letter-spacing:.01em;
  animation: fadeIn .5s var(--ease) .1s both;
}

/* =========================
   PROGRESSO (com “stripes” sutis)
   ========================= */
.progress-container{
  width: clamp(220px, 40vw, 360px);
  height: 8px;
  background: rgba(17,24,39,.06);
  border-radius: 999px;
  margin: 14px auto 0;
  overflow:hidden;
  box-shadow: inset 0 1px 3px rgba(16,24,40,.08);
}
.progress-bar{
  height:100%;
  width:0%;
  background: linear-gradient(90deg, var(--primary-400), var(--primary));
  position:relative;
  border-radius: 999px;
  transition: width .35s var(--ease);
}
.progress-bar::after{
  content:"";
  position:absolute; inset:0;
  background-image:
    linear-gradient(45deg, rgba(255,255,255,.35) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.35) 50%, rgba(255,255,255,.35) 75%, transparent 75%, transparent);
  background-size: 22px 22px;
  mix-blend-mode: soft-light;
  animation: stripes 1.2s linear infinite;
  border-radius: inherit;
}

/* =========================
   BOTÃO “Tentar novamente”
   ========================= */
.retry-button{
  appearance:none; border:0; cursor:pointer;
  margin: 16px auto 0;
  display:inline-flex; align-items:center; justify-content:center;
  padding: 12px 18px;
  border-radius: calc(var(--radius) - 2px);
  background: linear-gradient(180deg, var(--primary-400), var(--primary));
  color:#fff; font-weight:700;
  box-shadow: var(--shadow-lg);
  transition: transform .2s var(--ease), filter .2s var(--ease);
}
.retry-button:hover{ transform: translateY(-2px); filter: brightness(1.04); }
.retry-button:active{ transform: translateY(0); }

/* =========================
   INSTALAR PWA (banner suave)
   ========================= */
.install-banner{
  position:fixed; left:50%; bottom:18px; transform: translateX(-50%) translateY(24px);
  background:#fff; color:var(--text);
  border:1px solid rgba(0,0,0,.08);
  border-radius: var(--radius);
  padding: 12px 14px;
  display:flex; gap:10px; align-items:center;
  box-shadow: var(--shadow-lg);
  opacity:0; visibility:hidden;
  transition: opacity .35s var(--ease), transform .35s var(--ease), visibility .35s var(--ease);
  z-index:10000;
}
.install-banner.show{ opacity:1; visibility:visible; transform: translateX(-50%) translateY(0); }
.install-banner p{ margin:0; font-weight:600; color:var(--text); }
.install-banner #btn-install{
  appearance:none; border:0; cursor:pointer;
  background: linear-gradient(180deg, var(--primary-400), var(--primary));
  color:#fff; padding:8px 12px; border-radius:10px; font-weight:700;
}
.install-banner #btn-install:hover{ filter:brightness(1.05) }
.install-banner #btn-close{
  appearance:none; border:0; background:transparent; cursor:pointer;
  color: var(--text-muted); font-size:20px; line-height:1; padding:2px 6px;
}
.install-banner #btn-close:hover{ color: var(--primary-400) }

/* =========================
   RESPONSIVO
   ========================= */
@media (max-width: 768px){
  .progress-container{ width: clamp(200px, 70vw, 320px); height:7px; }
  .spinner{ --size:58px }
}
@media (max-width: 480px){
  .progress-container{ width: clamp(180px, 76vw, 300px); height:6px; }
  .spinner{ --size:50px }
}

/* =========================
   Modo Escuro do SO (sem preto)
   ========================= */
@media (prefers-color-scheme: dark){
  :root{
    --bg: #f8fafc;          /* mantemos claro para evitar “preto” */
    --text: #111827;
    --text-muted:#6b7280;
  }
  .loader-overlay::before{
    opacity:.85;
  }
  .spinner::after{
    background: linear-gradient(180deg, #fff 0%, #f5f7ff 100%);
  }
}

/* =========================
   Acessibilidade / menos movimento
   ========================= */
@media (prefers-reduced-motion: reduce){
  .loader-overlay::before{ animation:none }
  .spinner{ animation: none }
  .progress-bar::after{ animation: none }
}

/* =========================
   Animações
   ========================= */
@keyframes spin { to { transform: rotate(1turn) } }
@keyframes stripes { to { background-position: 22px 0 } }
@keyframes hue { to { filter: hue-rotate(360deg) saturate(1.02) } }
@keyframes floaty {
  0%   { transform: translate3d(0,0,0) }
  100% { transform: translate3d(0,-12px,0) }
}
@keyframes fadeIn{
  from{ opacity:0; transform: translateY(6px) }
  to  { opacity:1; transform: translateY(0) }
}
@keyframes rise{
  from{ opacity:0; transform: translateY(16px) scale(.98) }
  to  { opacity:1; transform: translateY(0)   scale(1) }
}