/* =========================================================
   Guia Med — sistema de design
   Paleta: fundo clínico claro, tinta naval, acento vital (verde-azulado)
   e um contraponto âmbar para "atenção/destaque".
   Tipografia: serifa editorial no display, sans neutra no corpo,
   monoespaçada nos metadados (imita leitura de monitor/traçado).
   ========================================================= */

:root{
  --bg: #F3F6F5;
  --surface: #FFFFFF;
  --ink: #0F2A3B;
  --ink-soft: #4C6373;
  --line: #DCE5E3;
  --vital: #1F7A67;      /* verde-azulado — "sinal vital" */
  --vital-dark: #155345;
  --amber: #D98C2B;      /* acento de destaque/alerta */
  --amber-soft: #FBEBD2;

  --font-display: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --radius: 10px;
  --shadow: 0 1px 2px rgba(15,42,59,.06), 0 8px 24px rgba(15,42,59,.06);
  --ease: .2s ease;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration:none; }
button{ font-family: inherit; cursor:pointer; }
:focus-visible{ outline: 2px solid var(--vital); outline-offset: 2px; }

.container{ max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* ---------- ECG signature divider ---------- */
.ecg-divider{
  width:100%; height:30px; margin: 0 0 10px;
  color: var(--vital);
  display:block;
}
.ecg-divider path{
  fill:none; stroke:currentColor; stroke-width:2.9;
  stroke-linecap:round; stroke-linejoin:round;
  stroke-dasharray: 520; stroke-dashoffset: 520;
  animation: draw 1.4s ease forwards;
  filter: drop-shadow(0 0 0 rgba(31,122,103,.15));
}
@keyframes draw{ to{ stroke-dashoffset:0; } }
@media (prefers-reduced-motion: reduce){
  .ecg-divider path{ animation:none; stroke-dashoffset:0; }
}

/* ---------- Header ---------- */
.site-header{
  position: sticky; top:0; z-index: 50;
  background: rgba(243,246,245,.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  display:flex; align-items:center; gap:24px;
  padding: 14px 20px;
}
.logo{
  font-family: var(--font-display);
  font-size: 1.35rem; font-weight: 600;
  color: var(--vital-dark);
  white-space: nowrap;
}
.logo span{ color: var(--amber); }

.nav-links{
  display:flex; gap:20px; list-style:none;
  margin:0; padding:0; flex:1;
}
.nav-links a{
  font-size:.92rem; color: var(--ink-soft);
  padding: 6px 2px; border-bottom: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}
.nav-links a:hover{ color: var(--vital-dark); border-color: var(--vital); }

.search-box{
  display:flex; align-items:center; gap:6px;
  background: var(--surface); border:1px solid var(--line);
  border-radius: 999px; padding: 6px 14px;
  min-width: 220px;
  transition: border-color var(--ease), box-shadow var(--ease), transform var(--ease);
}
.search-box:focus-within{
  border-color: var(--vital);
  box-shadow: 0 0 0 4px rgba(31,122,103,.10);
  transform: translateY(-1px);
}
.search-box input{
  border:none; outline:none; background:transparent;
  font-family: inherit; font-size:.9rem; color: var(--ink); width:100%;
}

.icon-btn{
  background:transparent; border:1px solid var(--line);
  border-radius: 999px; width:36px; height:36px;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem; color: var(--ink-soft);
  transition: background var(--ease), color var(--ease);
}
.icon-btn:hover{ background: var(--amber-soft); color: var(--vital-dark); }

.menu-toggle{ display:none; }

/* ---------- Hero ---------- */
.hero{
  padding: 64px 20px 48px;
  text-align:center;
}
.hero-eyebrow{
  font-family: var(--font-mono); font-size:.78rem; letter-spacing:.08em;
  text-transform: uppercase; color: var(--vital-dark);
  display:inline-flex; align-items:center; gap:8px;
  background: var(--amber-soft); padding:4px 12px; border-radius: 999px;
}
.hero h1{
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height:1.1; margin: 18px 0 12px;
  max-width: 720px; margin-inline:auto;
}
.hero p{
  color: var(--ink-soft); font-size:1.05rem;
  max-width: 560px; margin: 0 auto 28px;
}
.btn{
  display:inline-block; border:none; border-radius: 8px;
  padding: 12px 24px; font-weight:600; font-size:.95rem;
  transition: transform var(--ease), box-shadow var(--ease);
}
.btn-primary{ background: var(--vital); color:#fff; }
.btn-primary:hover{ transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-ghost{ background:transparent; border:1px solid var(--line); color: var(--ink); }
.btn-ghost:hover{ border-color: var(--vital); }

/* ---------- Layout: feed + aside ---------- */
.main-grid{
  display:grid; grid-template-columns: 1fr 320px; gap: 32px;
  align-items:start;
  padding: 8px 20px 60px;
  max-width: 1100px; margin: 0 auto;
}
.feed-header{
  display:flex; align-items:baseline; justify-content:space-between;
  margin-bottom: 16px;
}
.feed-header h2{ font-family: var(--font-display); font-size:1.5rem; margin:0; }
.tag-filters{ display:flex; flex-wrap:wrap; gap:8px; margin: 4px 0 22px; }
.tag-chip{
  font-family: var(--font-mono); font-size:.75rem;
  border:1px solid var(--line); border-radius: 999px;
  padding: 5px 12px; background: var(--surface); color: var(--ink-soft);
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}
.tag-chip:hover, .tag-chip.active{
  background: var(--vital); color:#fff; border-color: var(--vital);
}

/* ---------- Feed item ---------- */
.feed-list{ display:flex; flex-direction:column; gap:16px; list-style:none; padding:0; margin:0; }
.feed-item{
  background: var(--surface); border:1px solid var(--line);
  border-left: 4px solid var(--vital);
  border-radius: var(--radius); padding: 18px 22px;
  box-shadow: var(--shadow);
  transition: transform var(--ease), box-shadow var(--ease);
}
.feed-item:hover{ transform: translateY(-2px); }
.feed-item.visto{ border-left-color: var(--line); opacity:.82; }

.feed-meta{
  display:flex; align-items:center; gap:10px; flex-wrap:wrap;
  font-family: var(--font-mono); font-size:.75rem; color: var(--ink-soft);
  margin-bottom:8px;
}
.feed-meta .tipo{ color: var(--amber); font-weight:700; }
.status-dot{ width:7px; height:7px; border-radius:50%; background: var(--amber); display:inline-block; }
.status-dot.visto{ background: var(--line); }

.feed-item h3{ font-family: var(--font-display); font-size:1.25rem; margin: 0 0 4px; }
.feed-item .subtitulo{ color: var(--ink-soft); font-size:.92rem; margin: 0 0 10px; }

.topicos-list{
  margin: 0 0 14px; padding-left: 18px; color: var(--ink-soft); font-size:.88rem;
}
.topicos-list li{ margin-bottom:2px; }
.topicos-list li::marker{ color: var(--vital); }

.feed-footer{ display:flex; align-items:center; justify-content:space-between; }
.duracao{ font-family: var(--font-mono); font-size:.78rem; color: var(--ink-soft); }
.ler-btn{
  font-size:.85rem; font-weight:600; color: var(--vital-dark);
  border:1px solid var(--vital); border-radius: 8px; padding:8px 16px;
  transition: background var(--ease), color var(--ease);
}
.ler-btn:hover{ background: var(--vital); color:#fff; }

.empty-state{
  background: rgba(31,122,103,.04);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 20px 18px;
  color: var(--ink-soft);
  font-size: .95rem;
  text-align: center;
  list-style: none;
}
.empty-state small{
  display: block;
  margin-top: 6px;
  color: var(--ink-soft);
  opacity: .8;
}

.load-more{
  display:block; margin: 24px auto 0; text-align:center;
  font-family: var(--font-mono); font-size:.85rem; color: var(--vital-dark);
  border:1px dashed var(--vital); border-radius: 999px; padding:10px 20px;
  background: transparent;
}
.load-more:hover{ background: var(--vital); color:#fff; border-style:solid; }

/* ---------- Aside ---------- */
.aside-card{
  background: var(--surface); border:1px solid var(--line);
  border-radius: var(--radius); padding: 20px; margin-bottom: 18px;
  box-shadow: var(--shadow);
}
.aside-card h4{
  font-family: var(--font-mono); font-size:.75rem; text-transform:uppercase;
  letter-spacing:.06em; color: var(--vital-dark); margin: 0 0 10px;
}
.aside-card p{ font-size:.9rem; color: var(--ink-soft); margin: 0 0 14px; }
.destaque-item{
  display:flex; gap:10px; padding: 10px 0; border-top:1px solid var(--line);
  font-size:.88rem;
}
.destaque-item:first-of-type{ border-top:none; }
.destaque-num{ font-family: var(--font-mono); color: var(--amber); font-weight:700; }

/* ---------- Testimonials ---------- */
.testimonials{ padding: 20px 20px 60px; }
.testimonials .container{ max-width: 1100px; }
.testimonials h2{ font-family: var(--font-display); text-align:center; margin-bottom: 28px; }
.t-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap:18px; }
.t-card{
  background: var(--surface); border:1px solid var(--line); border-radius: var(--radius);
  padding:20px; box-shadow: var(--shadow);
}
.stars{ color: var(--amber); letter-spacing:2px; margin-bottom:8px; }
.t-card p{ color: var(--ink-soft); font-size:.92rem; margin: 0 0 12px; }
.t-name{ font-weight:600; font-size:.88rem; }
.t-course{ font-family: var(--font-mono); font-size:.75rem; color: var(--ink-soft); }

/* ---------- Footer ---------- */
.site-footer{
  border-top:1px solid var(--line); padding: 28px 20px;
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;
}
.site-footer nav{ display:flex; gap:18px; font-size:.85rem; color: var(--ink-soft); }
.site-footer nav a:hover{ color: var(--vital-dark); }
.copyright{ font-family: var(--font-mono); font-size:.78rem; color: var(--ink-soft); }

/* ---------- Article page ---------- */
.artigo-wrapper{ max-width: 800px; margin: 0 auto; padding: 40px 20px 80px; }
.voltar-link{
  display:inline-flex; align-items:center; gap:6px; font-size:.88rem;
  color: var(--vital-dark); margin-bottom: 22px;
}
.artigo-meta{
  font-family: var(--font-mono); font-size:.78rem; color: var(--ink-soft);
  display:flex; gap:14px; margin-bottom:10px;
}
.artigo-wrapper h1{
  font-family: var(--font-display); font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  margin: 0 0 20px;
}
.artigo-corpo{ font-size:1.08rem; line-height:1.8; }
.artigo-corpo p{ margin: 0 0 20px; }
.artigo-corpo strong{ color: var(--vital-dark); }
.ad-placeholder{
  background: #ECEFEE; border:1px dashed var(--line); border-radius: 8px;
  text-align:center; color: var(--ink-soft); font-family: var(--font-mono);
  font-size:.8rem; padding: 26px; margin: 28px 0;
}

/* ---------- Back to top ---------- */
.back-to-top{
  position: fixed; bottom: 24px; right: 24px;
  width: 44px; height:44px; border-radius:50%;
  background: var(--vital); color:#fff; border:none;
  box-shadow: var(--shadow); font-size:1.1rem;
  display:none; align-items:center; justify-content:center;
  transition: transform var(--ease);
  z-index: 60;
}
.back-to-top.show{ display:flex; }
.back-to-top:hover{ transform: translateY(-3px); }

/* ---------- Dark mode ---------- */
body.dark{
  --bg: #0E1B22;
  --surface: #142731;
  --ink: #EAF2F1;
  --ink-soft: #9FB4B9;
  --line: #223640;
  --vital: #3FB39C;
  --vital-dark: #7FD8C4;
  --amber: #E7A94C;
  --amber-soft: #2A2213;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px){
  .main-grid{ grid-template-columns: 1fr; }
  .t-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 720px){
  .nav-links{
    display:none; position:absolute; top:100%; left:0; right:0;
    background: var(--surface); flex-direction:column; padding:16px 20px;
    border-bottom:1px solid var(--line);
  }
  .nav-links.open{ display:flex; }
  .menu-toggle{
    display:flex; background:transparent; border:1px solid var(--line);
    border-radius:8px; width:38px; height:38px; align-items:center; justify-content:center;
  }
  .search-box{ display:none; }
}

/* =========================================================
   AUTENTICAÇÃO / ÁREA DO USUÁRIO
   ========================================================= */

.auth-area{ display:flex; align-items:center; gap:10px; }
.btn-sm{ padding: 8px 16px; font-size:.85rem; }

.user-chip{
  display:flex; align-items:center; gap:10px;
  font-size:.85rem; white-space:nowrap;
}
.user-chip .user-avatar{
  width:30px; height:30px; border-radius:50%;
  background: var(--vital); color:#fff; display:flex;
  align-items:center; justify-content:center;
  font-family: var(--font-mono); font-weight:700; font-size:.8rem;
}
.user-chip .user-name{ color: var(--ink-soft); }
.user-chip a{ color: var(--vital-dark); font-weight:600; }
.user-chip a:hover{ text-decoration: underline; }
.user-chip button{
  background:transparent; border:1px solid var(--line); border-radius:8px;
  padding:6px 12px; font-size:.8rem; color: var(--ink-soft);
  transition: background var(--ease), color var(--ease);
}
.user-chip button:hover{ background: var(--amber-soft); color: var(--vital-dark); }

/* ---------- Página de autenticação (login/cadastro) ---------- */

.auth-wrapper{
  min-height: calc(100vh - 300px);
  display:flex; align-items:center; justify-content:center;
  padding: 60px 20px;
}
.auth-card{
  width:100%; max-width: 420px;
  background: var(--surface); border:1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 32px;
}
.auth-card h1{
  font-family: var(--font-display); font-size:1.6rem; margin: 0 0 6px;
  text-align:center;
}
.auth-subtitle{
  text-align:center; color: var(--ink-soft); font-size:.9rem; margin: 0 0 24px;
}
.auth-tabs{
  display:flex; border:1px solid var(--line); border-radius: 999px;
  padding: 4px; margin-bottom: 26px; background: var(--bg);
}
.auth-tab{
  flex:1; text-align:center; padding: 8px 0; border-radius: 999px;
  font-size:.88rem; font-weight:600; color: var(--ink-soft);
  background:transparent; border:none; transition: background var(--ease), color var(--ease);
}
.auth-tab.active{ background: var(--vital); color:#fff; }

.auth-form{ display:none; flex-direction:column; gap:16px; }
.auth-form.active{ display:flex; }

.form-group{ display:flex; flex-direction:column; gap:6px; }
.form-group label{ font-size:.82rem; font-weight:600; color: var(--ink); }
.form-group input,
.form-group select,
.form-group textarea{
  border:1px solid var(--line); border-radius: 8px; padding: 10px 12px;
  font-family: inherit; font-size:.92rem; background: var(--bg); color: var(--ink);
  transition: border-color var(--ease), box-shadow var(--ease);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
  border-color: var(--vital); box-shadow: 0 0 0 3px rgba(31,122,103,.12); outline:none;
}
.form-group textarea{ resize: vertical; min-height: 120px; }
.form-hint{ font-size:.76rem; color: var(--ink-soft); }
.form-error{
  font-size:.8rem; color:#B4402A; display:none; margin-top:2px;
}
.form-error.show{ display:block; }
.form-group.invalid input,
.form-group.invalid textarea{ border-color:#B4402A; }

.auth-form .btn{ width:100%; text-align:center; margin-top:6px; }
.auth-switch{
  text-align:center; font-size:.85rem; color: var(--ink-soft); margin-top: 18px;
}
.auth-switch button{ background:none; border:none; color: var(--vital-dark); font-weight:600; }

/* honeypot anti-spam: escondido de humanos, visível para bots */
.hp-field{ position:absolute; left:-9999px; opacity:0; height:0; overflow:hidden; }

/* ---------- Toast de notificação ---------- */

.toast-container{
  position: fixed; top: 20px; right: 20px; z-index: 100;
  display:flex; flex-direction:column; gap:10px;
}
.toast{
  background: var(--ink); color:#fff; padding: 12px 18px; border-radius: 8px;
  font-size:.85rem; box-shadow: var(--shadow);
  display:flex; align-items:center; gap:10px;
  animation: toast-in .25s ease;
  max-width: 320px;
}
.toast.erro{ background:#B4402A; }
.toast.sucesso{ background: var(--vital-dark); }
@keyframes toast-in{ from{ opacity:0; transform: translateY(-8px);} to{opacity:1; transform:translateY(0);} }

/* ---------- Página de perfil / área do aluno ---------- */

.perfil-header{
  display:flex; align-items:center; gap:18px; padding: 40px 20px 20px;
  max-width: 1100px; margin: 0 auto;
}
.perfil-avatar{
  width:64px; height:64px; border-radius:50%; background: var(--vital);
  color:#fff; display:flex; align-items:center; justify-content:center;
  font-family: var(--font-display); font-size:1.5rem; font-weight:700;
  flex-shrink:0;
}
.perfil-header h1{ font-family: var(--font-display); margin:0 0 4px; font-size:1.6rem; }
.perfil-header p{ margin:0; color: var(--ink-soft); font-size:.88rem; }

.perfil-stats{
  display:grid; grid-template-columns: repeat(3,1fr); gap:14px;
  max-width: 1100px; margin: 0 auto; padding: 0 20px 20px;
}
.stat-card{
  background: var(--surface); border:1px solid var(--line); border-radius: var(--radius);
  padding: 18px; text-align:center; box-shadow: var(--shadow);
}
.stat-card .num{ font-family: var(--font-display); font-size:1.8rem; color: var(--vital-dark); }
.stat-card .label{ font-size:.78rem; color: var(--ink-soft); font-family: var(--font-mono); }

.perfil-section{ max-width: 1100px; margin: 0 auto; padding: 10px 20px 50px; }
.perfil-section h2{ font-family: var(--font-display); font-size:1.2rem; margin-bottom:14px; }
.perfil-lista{ display:flex; flex-direction:column; gap:10px; list-style:none; padding:0; margin: 0 0 30px; }
.perfil-item{
  display:flex; align-items:center; justify-content:space-between;
  background: var(--surface); border:1px solid var(--line); border-left:3px solid var(--vital);
  border-radius: 8px; padding: 12px 16px; font-size:.9rem;
}
.perfil-item .meta{ font-family: var(--font-mono); font-size:.75rem; color: var(--ink-soft); }
.perfil-vazio{
  color: var(--ink-soft); font-size:.88rem; font-style:italic;
  border: 1px dashed var(--line); border-radius: 8px; padding: 18px; text-align:center;
}

/* ---------- Botão de favoritar (coração) ---------- */

.fav-btn{
  background:transparent; border:1px solid var(--line); border-radius: 999px;
  width:34px; height:34px; display:flex; align-items:center; justify-content:center;
  font-size:1rem; color: var(--ink-soft);
  transition: color var(--ease), border-color var(--ease), transform var(--ease);
}
.fav-btn:hover{ transform: scale(1.08); border-color:#D14C4C; }
.fav-btn.active{ color:#D14C4C; border-color:#D14C4C; }
.feed-footer-row{ display:flex; align-items:center; gap:10px; }

/* ---------- Páginas de conteúdo (contato, sobre, privacidade) ---------- */

.page-header{ max-width: 800px; margin: 0 auto; padding: 50px 20px 10px; text-align:center; }
.page-header h1{ font-family: var(--font-display); font-size: clamp(1.8rem,3.5vw,2.4rem); margin:0 0 10px; }
.page-header p{ color: var(--ink-soft); }

.page-content{ max-width: 800px; margin: 0 auto; padding: 20px 20px 70px; }
.page-content h2{ font-family: var(--font-display); font-size:1.3rem; margin: 32px 0 12px; }
.page-content h2:first-child{ margin-top:0; }
.page-content p{ line-height:1.75; color: var(--ink); margin: 0 0 14px; }
.page-content ul{ line-height:1.75; color: var(--ink); padding-left: 20px; }
.page-content li{ margin-bottom:6px; }
.page-content .aviso{
  background: var(--amber-soft); border-left:3px solid var(--amber);
  border-radius: 8px; padding: 14px 18px; font-size:.9rem; margin: 20px 0;
}

.contato-grid{
  display:grid; grid-template-columns: 1fr 320px; gap: 32px;
  max-width: 1100px; margin: 0 auto; padding: 20px 20px 70px;
}
@media (max-width: 780px){ .contato-grid{ grid-template-columns: 1fr; } }
.contato-form{
  background: var(--surface); border:1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow); display:flex; flex-direction:column; gap:18px;
}
.char-counter{ font-size:.75rem; color: var(--ink-soft); text-align:right; font-family: var(--font-mono); }

.sobre-grid{
  display:grid; grid-template-columns: repeat(2,1fr); gap:18px; margin: 24px 0;
}
@media (max-width:700px){ .sobre-grid{ grid-template-columns:1fr; } }
.sobre-pessoa{
  background: var(--surface); border:1px solid var(--line); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow);
}
.sobre-pessoa .papel{
  font-family: var(--font-mono); font-size:.72rem; text-transform:uppercase;
  color: var(--amber); letter-spacing:.05em; margin-bottom: 6px; display:block;
}