/*
  Portal Prof. Paulo Fernando Kuss
  Estilos globais extraídos do index.html original.
  Identidade visual preservada para permitir evolução modular do site.
*/
:root {
      --ifc-green: #00843d;
      --ifc-dark: #004225;
      --mint: #8fffd2;
      --blue: #1d5f8f;
      --bg: #06140f;
      --text: #f7fff9;
      --muted: #c8d9d1;
      --card: rgba(255,255,255,.11);
      --card2: rgba(255,255,255,.075);
      --stroke: rgba(255,255,255,.18);
      --shadow: 0 24px 70px rgba(0,0,0,.33);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 18% 12%, rgba(143,255,210,.22), transparent 28%),
        radial-gradient(circle at 82% 8%, rgba(29,95,143,.36), transparent 34%),
        radial-gradient(circle at 60% 90%, rgba(0,132,61,.35), transparent 36%),
        linear-gradient(135deg, #03110c 0%, #062118 42%, #07192b 100%);
      min-height: 100vh;
      overflow-x: hidden;
    }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size: 46px 46px;
      mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.25));
      pointer-events: none;
      z-index: -2;
    }
    body::after {
      content: "";
      position: fixed;
      inset: 0;
      background:
        linear-gradient(115deg, transparent 0 34%, rgba(143,255,210,.08) 35%, transparent 36% 100%),
        linear-gradient(64deg, transparent 0 58%, rgba(255,255,255,.05) 59%, transparent 60% 100%);
      pointer-events: none;
      z-index: -1;
    }
    a { color: inherit; text-decoration: none; }
    .wrap { width: min(1160px, calc(100% - 36px)); margin: 0 auto; }
    header {
      position: sticky;
      top: 0;
      z-index: 20;
      backdrop-filter: blur(18px);
      background: rgba(3, 17, 12, .72);
      border-bottom: 1px solid rgba(255,255,255,.11);
    }
    nav { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; gap: 18px; }
    .brand { display: flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: -.02em; }
    .brand-mark {
      width: 38px; height: 38px; border-radius: 14px;
      display: grid; place-items: center;
      background: linear-gradient(135deg, var(--ifc-green), var(--mint));
      color: #02130c; box-shadow: 0 12px 35px rgba(0,132,61,.35);
    }
    .navlinks { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
    .navlinks a { padding: 10px 12px; color: var(--muted); font-weight: 650; font-size: 14px; border-radius: 999px; }
    .navlinks a:hover { background: rgba(255,255,255,.1); color: #fff; }
    .hero {
      min-height: 80vh;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 46px;
      align-items: center;
      padding: 72px 0 44px;
    }
    .tag {
      display: inline-flex; align-items: center; gap: 10px;
      border: 1px solid rgba(143,255,210,.35);
      background: rgba(143,255,210,.09);
      padding: 9px 13px;
      border-radius: 999px;
      color: #dffff1;
      font-weight: 700;
      font-size: 14px;
    }
    h1 {
      font-size: clamp(40px, 6vw, 76px);
      line-height: .95;
      margin: 22px 0 18px;
      letter-spacing: -.07em;
    }
    .gradient-text {
      background: linear-gradient(90deg, #fff, #baffe3 50%, #a7d8ff);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .lead { font-size: clamp(18px, 2.2vw, 23px); color: var(--muted); line-height: 1.55; max-width: 680px; }
    .actions { display: flex; gap: 13px; flex-wrap: wrap; margin-top: 30px; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 9px;
      min-height: 50px;
      padding: 0 18px;
      border-radius: 16px;
      font-weight: 800;
      border: 1px solid var(--stroke);
      background: rgba(255,255,255,.09);
      box-shadow: 0 14px 35px rgba(0,0,0,.18);
      transition: transform .2s ease, background .2s ease, border-color .2s ease;
    }
    .btn:hover { transform: translateY(-2px); background: rgba(255,255,255,.15); border-color: rgba(143,255,210,.45); }
    .primary { color: #02130c; background: linear-gradient(135deg, #aaffd9, #00c466); border: 0; }
    .socials { display:flex; flex-wrap:wrap; gap:10px; margin-top: 24px; }
    .socials a {
      padding: 9px 12px;
      border: 1px solid var(--stroke);
      border-radius: 999px;
      background: rgba(255,255,255,.07);
      color: #e8fff5;
      font-size: 14px;
      font-weight: 700;
    }
    .photo-card {
      position: relative;
      padding: 18px;
      border: 1px solid var(--stroke);
      background: linear-gradient(180deg, rgba(255,255,255,.17), rgba(255,255,255,.07));
      border-radius: 38px;
      box-shadow: var(--shadow);
      backdrop-filter: blur(22px);
    }
    .photo-card::before {
      content: "";
      position: absolute;
      inset: -2px;
      border-radius: 40px;
      background: linear-gradient(135deg, rgba(143,255,210,.65), transparent 35%, rgba(96,177,255,.5));
      z-index: -1;
      opacity: .75;
    }
    .portrait { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; border-radius: 30px; }
    .floating {
      position: absolute; left: -18px; bottom: 28px;
      background: rgba(2, 19, 12, .72);
      border: 1px solid rgba(143,255,210,.28);
      backdrop-filter: blur(14px);
      border-radius: 20px;
      padding: 14px 16px;
      box-shadow: 0 18px 50px rgba(0,0,0,.28);
      max-width: 270px;
    }
    .floating strong { display:block; color:#baffe3; margin-bottom:4px; }
    section { padding: 60px 0; }
    .section-title { font-size: clamp(30px, 4vw, 48px); letter-spacing: -.045em; margin: 0 0 14px; }
    .section-sub { color: var(--muted); font-size: 18px; line-height: 1.55; max-width: 820px; margin: 0 0 26px; }
    .grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .card {
      background: var(--card);
      border: 1px solid var(--stroke);
      border-radius: 24px;
      padding: 24px;
      backdrop-filter: blur(18px);
      box-shadow: 0 18px 48px rgba(0,0,0,.2);
    }
    .card h3 { margin: 10px 0 8px; font-size: 22px; letter-spacing: -.025em; }
    .card p { margin: 0; color: var(--muted); line-height: 1.55; }
    .icon { font-size: 34px; }
    .stats { display:grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .stat { padding: 22px; border-radius: 24px; border: 1px solid var(--stroke); background: var(--card2); }
    .stat strong { display:block; font-size: 34px; color:#baffe3; letter-spacing:-.05em; }
    .portal {
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      align-items: stretch;
    }
    .login-box label { display:block; color:#dffdef; font-weight:750; margin: 13px 0 7px; }
    .login-box input {
      width:100%;
      padding: 14px 15px;
      border-radius: 14px;
      border: 1px solid rgba(255,255,255,.22);
      background: rgba(0,0,0,.22);
      color:#fff;
      outline: none;
    }
    .login-box input:focus { border-color: rgba(143,255,210,.7); box-shadow: 0 0 0 4px rgba(143,255,210,.12); }
    .error { display:none; margin-top:14px; color:#ffd0d0; background:rgba(255,0,0,.1); border:1px solid rgba(255,120,120,.3); padding:12px; border-radius:14px; font-weight:700; }
    footer { padding: 40px 0; color: var(--muted); border-top: 1px solid rgba(255,255,255,.11); }
    footer .foot { display:flex; justify-content:space-between; gap:20px; align-items:center; flex-wrap:wrap; }
    @media (max-width: 900px) {
      .hero, .portal { grid-template-columns: 1fr; }
      .grid { grid-template-columns: 1fr; }
      .stats { grid-template-columns: repeat(2, 1fr); }
      .floating { position: static; margin-top: 12px; max-width: none; }
      nav { align-items:flex-start; }
      .navlinks { display:none; }
    }
    @media (max-width: 520px) {
      .stats { grid-template-columns: 1fr; }
      .actions .btn { width: 100%; }
      .wrap { width: min(100% - 24px, 1160px); }
    }


/* V3 — fotografia oficial da home */
.hero img[src$="paulo-kuss.png"],
.hero-photo img[src$="paulo-kuss.png"],
.hero-media img[src$="paulo-kuss.png"],
img[src$="paulo-kuss.png"] {
  object-fit: cover;
  object-position: 50% 34%;
}

/* Mantém a fotografia íntegra no arquivo; o enquadramento é feito somente por CSS. */
@media (max-width: 900px) {
  .hero img[src$="paulo-kuss.png"],
  .hero-photo img[src$="paulo-kuss.png"],
  .hero-media img[src$="paulo-kuss.png"] {
    object-position: 50% 28%;
  }
}


/* V4 — áreas de atuação */
.section-head{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(300px,.75fr);
  gap:clamp(24px,5vw,70px);
  align-items:end;
  margin-bottom:34px;
}
.section-head h2{margin:12px 0 0;max-width:760px}
.section-head>p{margin:0;color:var(--muted);line-height:1.65;font-size:16px}

.expertise-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
}
.expertise-card{
  position:relative;
  overflow:hidden;
  min-height:320px;
  padding:27px;
  border:1px solid var(--stroke);
  border-radius:26px;
  background:var(--card2);
  box-shadow:0 14px 45px rgba(0,0,0,.13);
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.expertise-card:hover{
  transform:translateY(-3px);
  border-color:rgba(143,255,210,.34);
  background:rgba(255,255,255,.10);
}
.expertise-card.featured{
  background:
    linear-gradient(145deg,rgba(143,255,210,.09),rgba(255,255,255,.055));
  border-color:rgba(143,255,210,.23);
}
.expertise-index{
  position:absolute;
  right:20px;top:14px;
  font-size:52px;font-weight:950;letter-spacing:-.08em;
  color:rgba(143,255,210,.075);
}
.expertise-icon{
  width:50px;height:50px;display:grid;place-items:center;
  border-radius:15px;
  background:rgba(143,255,210,.11);
  border:1px solid rgba(143,255,210,.18);
  color:#baffe3;font-size:13px;font-weight:950;letter-spacing:.04em;
}
.expertise-card h3{
  max-width:500px;margin:20px 0 10px;
  font-size:clamp(22px,2.5vw,29px);letter-spacing:-.035em;
}
.expertise-card>p{
  max-width:650px;margin:0 0 20px;color:var(--muted);line-height:1.58;
}
.topic-chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}
.topic-chips span{
  padding:7px 9px;border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(0,0,0,.12);
  color:#dcebe4;font-size:11px;font-weight:750;
}

.invite-panel{
  margin-top:24px;padding:clamp(25px,4vw,40px);
  border:1px solid rgba(143,255,210,.24);
  border-radius:30px;
  background:
    radial-gradient(circle at 90% 10%,rgba(29,95,143,.23),transparent 36%),
    linear-gradient(145deg,rgba(0,132,61,.13),rgba(255,255,255,.06));
}
.invite-panel h3{
  margin:9px 0 8px;font-size:clamp(27px,4vw,39px);letter-spacing:-.04em
}
.invite-panel>div:first-child>p{max-width:760px;color:var(--muted);line-height:1.6}
.invite-topics{display:flex;flex-wrap:wrap;gap:8px;margin:25px 0}
.invite-topics span{
  padding:9px 12px;border-radius:999px;
  background:rgba(143,255,210,.08);
  border:1px solid rgba(143,255,210,.17);
  color:#e7fff4;font-size:13px;font-weight:750;
}
.invite-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

@media(max-width:900px){
  .section-head{grid-template-columns:1fr}
  .expertise-grid{grid-template-columns:1fr}
  .expertise-card{min-height:auto}
}
@media(max-width:520px){
  .expertise-card{padding:22px 18px;border-radius:22px}
  .expertise-index{font-size:43px}
  .invite-panel{border-radius:24px}
  .invite-actions .btn{width:100%;text-align:center}
}


/* V5 — identidade profissional: educador como eixo */
.about-section{
  padding:86px 0;
  border-block:1px solid rgba(255,255,255,.07);
  background:
    radial-gradient(circle at 15% 20%,rgba(0,132,61,.12),transparent 32%),
    rgba(0,0,0,.10);
}
.about-layout{
  display:grid;
  grid-template-columns:minmax(280px,.82fr) minmax(0,1.18fr);
  gap:clamp(36px,7vw,90px);
  align-items:start;
}
.about-role{
  margin:20px 0 8px;
  color:#9fffd7;
  font-size:12px;
  font-weight:950;
  letter-spacing:.15em;
}
.about-heading h2{
  margin:0;
  font-size:clamp(38px,5.2vw,64px);
  line-height:1.02;
  letter-spacing:-.055em;
}
.about-content{
  padding-top:38px;
}
.about-content>p{
  color:var(--muted);
  font-size:16px;
  line-height:1.72;
  margin:0 0 18px;
}
.about-content .about-lead{
  color:#f2fff8;
  font-size:clamp(19px,2vw,23px);
  line-height:1.58;
}
.about-content strong{color:#eafff4}
.about-pillars{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:10px;
  margin-top:30px;
}
.about-pillars>div{
  padding:16px 17px;
  border:1px solid rgba(143,255,210,.15);
  background:rgba(143,255,210,.055);
  border-radius:17px;
}
.about-pillars strong{
  display:block;
  color:#baffe3;
  font-size:15px;
}
.about-pillars span{
  display:block;
  color:var(--muted);
  font-size:12px;
  margin-top:3px;
}

@media(max-width:900px){
  .about-layout{grid-template-columns:1fr;gap:18px}
  .about-content{padding-top:0}
}
@media(max-width:520px){
  .about-section{padding:64px 0}
  .about-pillars{grid-template-columns:1fr 1fr}
  .about-pillars>div{padding:14px}
  .about-content .about-lead{font-size:18px}
}