:root{
  /* ---------- Paleta STRANE Express (Azul + Cobre) ---------- */
  /* Azuis (fundo e textos) */
  --navy-900:#081a24;
  --navy-800:#0b2230;
  --navy-700:#0f2d3a;   /* base do texto escuro */
  --navy-600:#0e2a38;   /* fundo mais profundo */
  --navy-500:#15384a;
  --navy-300:#2c4c60;   /* bordas/realces frios */

  /* Cobres (destaques e CTAs) */
  --copper-800:#824f38; /* muito escuro */
  --copper-700:#9c6446; /* hover/press forte */
  --copper-600:#b87356; /* primário */
  --copper-550:#c58161; /* mid */
  --copper-500:#d69b73; /* claro (ícones/linhas) */
  --copper-400:#e3ad84; /* realce claro */
  --copper-300:#f1c08f; /* sutil (hover leve) */

  /* Gradiente institucional: COBRE metálico (invertido) */
  --brand-gradient: linear-gradient(-45deg,
     #824f38 0%,
     #b87356 22%,
     #e3ad84 48%,
     #b87356 74%,
     #9c6446 100%
  );

  /* Sheen metálico (realce especular sutil) */
  --metal-sheen-alpha: 0.14; /* ↑ para aumentar o brilho */
  --metal-sheen:
    linear-gradient(115deg,
      rgba(255,255,255,0) 0%,
      rgba(255,255,255,var(--metal-sheen-alpha)) 12%,
      rgba(255,255,255,0) 24%,
      rgba(255,255,255,var(--metal-sheen-alpha)) 38%,
      rgba(255,255,255,0) 52%);

  /* ---------- Tokens de interface ---------- */
  --bg-color: var(--navy-600);        /* azul escuro no fundo da página */
  --bg-round-a: var(--copper-700);    /* cobre na onda */
  --bg-round-b: var(--copper-500);

  --panel-color:#ffffff;
  --title:#ffffff;

  /* Campos */
  --bg-input:#e6ecf1;                 /* cinza-azulado suave */
  --input-icon: var(--copper-600);
  --input:#0f2d3a;
  --input-hover:#203b49;

  /* Botões */
  --btn-text:#ffffff;
  --btn-solid: var(--copper-600);     /* fallback sólido */
  --btn-solid-hover: var(--copper-700);
  --btn-gradient:
    linear-gradient(135deg,#9c6446 0%,#b87356 40%,#e3ad84 100%);

  /* Social / pequenos */
  --social-text:#dbe3e9;
  --social-icon: var(--copper-500);
  --icon-color:#ffffff;

  /* Links e avisos */
  --check-text:#dfe7ec;
  --check-hover:#ffffff;
  --check-link: var(--copper-400);
  --pass-color:#ffffff;
  --key-color:#000000;
  --pass-hover-color: var(--copper-400);

  /* Teclado / detalhes */
  --keyboard-color:#eef3f6;
  --key-letter:#203b49;

  /* Efeitos */
  --ring: 0 0 0 3px rgba(184,115,86,.28);
  --shadow: 0 10px 28px rgba(8,26,36,.28);
  --border-soft: 1px solid rgba(44,76,96,.38);
}

*{
  padding:0;margin:0;box-sizing:border-box;
  font-family:"Poppins",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif
}

/* -------- Estrutura -------- */
.container{
  position:relative;width:100%;min-height:100vh;
  background-color:var(--bg-color);overflow:hidden;
  color:#eaf1f5;
}

/* Onda/halo com COBRE metálico sobreposto de sheen */
.container:before{
  content:"";position:absolute;width:2000px;height:2000px;border-radius:50%;
  background-image: var(--brand-gradient), var(--metal-sheen);
  background-blend-mode: screen, normal;
  top:-10%;right:48%;transform:translateY(-50%);
  z-index:6;transition:1.8s ease-in-out;
}

.forms-container{position:absolute;width:100%;height:90%;top:0;left:0}

.signin-signup{
  position:absolute;top:50%;left:75%;transform:translate(-50%,-50%);
  width:40%;display:grid;grid-template-columns:1fr;z-index:5;
  transition:1s .7s ease-in-out;
}

form{
  display:flex;align-items:center;justify-content:center;flex-direction:column;
  padding:0 2rem;overflow:hidden;grid-column:1/2;grid-row:1/2;
  transition:.2s .7s ease-in-out;
}
form.sign-in-form{z-index:2}
form.sign-up-form{z-index:1;opacity:0}

.form-logo{height:100px}

.title{
  font-size:1.8rem;color:var(--title);margin-bottom:10px;letter-spacing:.2px
}

/* -------- Campos -------- */
.input-field{
  width:85%;height:45px;background-color:var(--bg-input);margin:8px 0;border-radius:45px;
  display:grid;grid-template-columns:15% 70% 15%;padding:0 .4rem;
  border:var(--border-soft);
  transition: box-shadow .15s ease, border-color .15s ease, background-color .15s ease;
}
.input-field:focus-within{
  background-color:#f7fbfe;border-color:rgba(184,115,86,.6);box-shadow:var(--ring);
}
.input-field i{
  text-align:center;line-height:45px;color:var(--input-icon);font-size:1.1rem;
}
.input-field input{
  background:none;outline:none;border:none;line-height:1;font-weight:500;font-size:1rem;color:var(--input);
}
.input-field input::placeholder{color:var(--input-hover);font-weight:400}
.input-field select{
  background:none;outline:none;border:none;line-height:1;font-weight:500;font-size:1rem;color:var(--input);
  -webkit-appearance:none;-moz-appearance:none;appearance:none;
}
.input-field select::placeholder{color:var(--input-hover);font-weight:400}
.input-field select+i,.input-field input+i{display:none}

/* -------- Botões -------- */
.btn{
  width:130px;height:45px;border:none;outline:none;border-radius:45px;cursor:pointer;
  color:var(--btn-text);text-transform:uppercase;font-weight:600;margin:10px 0;
  transition: background .25s ease, transform .06s ease, filter .2s ease;
  box-shadow: var(--shadow);
  background: var(--btn-solid);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn:focus-visible{outline:3px solid rgba(229,185,150,.65);outline-offset:2px}

/* Variante em degradê cobre (recomendado para CTA principal) */
.btn--gradient{
  background-image: var(--btn-gradient), var(--metal-sheen);
  background-blend-mode: screen, normal;
}
.btn--gradient:hover{
  filter:saturate(1.05) contrast(1.02);
}

/* -------- Links -------- */
.pass{margin:8px 0;color:var(--pass-color)}
.pass:hover{color:var(--pass-hover-color);text-decoration:underline}

/* -------- Social -------- */
.social-media{display:flex;justify-content:center}
.icon-mode{
  height:32px;width:32px;border:1px solid var(--icon-color);margin:10px 5px;
  display:flex;justify-content:center;align-items:center;text-decoration:none;
  color:var(--icon-color);font-size:1rem;border-radius:50%;transition:.3s;
  background:rgba(255,255,255,.06);
}
.icon-mode:hover{color:var(--social-icon);border-color:var(--social-icon)}
.text-mode{padding:.5rem 0;font-size:.8rem;font-style:italic;color:var(--social-text)}

/* -------- Painéis -------- */
.panels-container{position:absolute;width:100%;height:100%;top:0;left:0;display:grid;grid-template-columns:repeat(2,1fr)}
.panel{display:flex;flex-direction:column;align-items:flex-end;justify-content:space-around;text-align:center;z-index:7}
.left-panel{pointer-events:all;padding:0 17% 10rem 12%}
.right-panel{pointer-events:none;padding:0 17% 10rem 12%}
.panel .content{color:var(--panel-color);transition:.9s .6s ease-in-out}
.panel h3{font-weight:600;line-height:1;font-size:1.5rem}
.panel p{font-size:.95rem;padding:.7rem 0}

.btn.transparent{
  margin:0;background:none;border:2px solid rgba(255,255,255,.92);
  width:130px;height:41px;font-weight:600;font-size:.8rem;color:#fff;
}

.image{width:90%;margin-top:10px;transition:1.1s .4s ease-in-out}
.right-panel .content,.right-panel .image{transform:translateX(800px)}

.container.sign-up-mode:before{transform:translate(100%,-50%);right:52%}
.container.sign-up-mode .left-panel .image,
.container.sign-up-mode .left-panel .content{transform:translateX(-800px)}
.container.sign-up-mode .right-panel .content,
.container.sign-up-mode .right-panel .image{transform:translateX(0)}
.container.sign-up-mode .left-panel{pointer-events:none}
.container.sign-up-mode .right-panel{pointer-events:all}
.container.sign-up-mode .signin-signup{left:25%}
.container.sign-up-mode form.sign-in-form{z-index:1;opacity:0}
.container.sign-up-mode form.sign-up-form{z-index:2;opacity:1}

/* -------- Responsivo -------- */
@media (max-width:870px){
  .container{min-height:800px;height:100vh}
  .container::before{
    width:1500px;height:1500px;left:30%;bottom:68%;
    transform:translateX(-50%);right:initial;top:initial;transition:2s ease-in-out
  }
  .signin-signup{width:100%;left:50%;top:95%;transform:translate(-50%,-100%);transition:1s .8s ease-in-out}
  .panels-container{grid-template-columns:1fr;grid-template-rows:1fr 2fr 1fr}
  .panel{flex-direction:row;justify-content:space-around;align-items:center;padding:2.5rem 8%}
  .panel .content{padding-right:15%;transition:.9s .8s ease-in-out}
  .panel h3{font-size:1.2rem}
  .panel p{font-size:.7rem;padding:.5rem 0}
  .btn.transparent{width:110px;height:35px;font-size:.7rem}
  .image{display:none}
  .left-panel{grid-row:1/2}
  .right-panel{grid-row:3/4}
  .right-panel .content,.right-panel .image{transform:translateY(300px)}
  .container.sign-up-mode:before{transform:translate(-50%,100%);bottom:32%;right:initial}
  .container.sign-up-mode .left-panel .image,
  .container.sign-up-mode .left-panel .content{transform:translateY(-300px)}
  .container.sign-up-mode .signin-signup{top:5%;transform:translate(-50%,0);left:50%}
}
@media (max-width:570px){
  form{padding:0 1.5rem}
  .panel .content{padding:.5rem 1rem}
  .panel p{opacity:0}
  .container:before{bottom:75%;left:50%}
  .container.sign-up-mode:before{bottom:24%;left:50%}
}
@media (max-width:385px){
  .field-icon{float:right;margin-left:260px;margin-top:-55px;position:relative;z-index:1}
}
@media (max-width:350px){
  .field-icon{float:right;margin-left:200px;margin-top:-55px;position:relative;z-index:1}
}


/* utilitário para links limpos */
a, a:focus, a:hover {
  text-decoration: none;
  border-bottom: none;
}

/* -------- Header e rodapé -------- */
header{
  display:flex;justify-content:space-between;align-items:center;
  background:transparent;padding:10px 20px;position:fixed;top:0;width:100%;z-index:8
}
.logo{color:var(--title);font-weight:700;font-size:1.5rem;letter-spacing:.3px}
.menu{list-style:none;display:flex;margin:0;padding:0}
.menu li{margin:0 15px}
.menu a{text-decoration:none;color:var(--title);font-weight:600}
.menu a:hover{color:var(--copper-300)}

.login-button{
  background: var(--btn-gradient), var(--metal-sheen);
  background-blend-mode: screen, normal;
  color:var(--btn-text);border:none;padding:10px 20px;border-radius:24px;
  box-shadow: var(--shadow);
}

.footer{
  background-color:var(--bg-color);color:var(--title);padding:20px 0;text-align:center;font-size:.9rem;
  border-top:1px solid rgba(255,255,255,.14)
}
.footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap}
.footer .container .row{width:100%}
.footer .container .credits{margin-top:10px}
.footer .container .links{margin-top:10px}
.footer .container .links a{color:var(--title);text-decoration:none;margin:0 10px}
.footer .container .links a:hover{text-decoration:underline}