:root{
  --teal:#0f766e;
  --orange:#f59e0b;
  --gray-100:#f3f4f6;
  --gray-200:#e5e7eb;
  --gray-400:#9ca3af;
  --dark:#111827;
}

*{
  box-sizing:border-box;
}

body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--gray-100);
  color:var(--dark);
}

/* ================= TOPBAR ================= */
.topbar{
  background:var(--teal);
  color:#fff;
  font-size:13px;
}

.topbar .wrap{
  max-width:1120px;
  margin:0 auto;
  padding:10px 16px;
  display:flex;
  gap:16px;
  justify-content:space-between;
  flex-wrap:wrap;
}

.topbar .left{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
}

/* ================= NAVBAR ================= */
.navbar{
  background:#d1d5db;
  border-bottom:1px solid var(--gray-200);
}

.navbar .wrap{
  max-width:1120px;
  margin:0 auto;
  padding:14px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}

.brand{
  font-weight:900;
  color:var(--teal);
  font-size:18px;
}

/* ================= AUTH (LOGIN / REGISTER) ================= */
.auth-wrap{
  min-height:calc(100vh - 102px);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:40px 16px;
}

.auth-card{
  width:520px;
  max-width:100%;
  background:#fff;
  border:1px solid var(--gray-200);
  border-radius:18px;
  box-shadow:0 18px 40px rgba(0,0,0,.12);
  overflow:hidden;
}

.auth-head{
  background:var(--teal);
  padding:20px 22px;
  color:#fff;
}

.auth-head h1{
  margin:0;
  font-size:22px;
  font-weight:900;
}

.auth-head p{
  margin:6px 0 0;
  font-size:13px;
  opacity:.9;
}

.auth-body{
  padding:20px;
}

.auth-form{
  display:flex;
  flex-direction:column;
  gap:14px;
}

.label{
  display:block;
  font-size:13px;
  font-weight:800;
  color:#374151;
  margin-bottom:6px;
}

.input{
  width:100%;
  padding:12px;
  border:1px solid var(--gray-200);
  border-radius:12px;
  outline:none;
  font-size:14px;
}

.input:focus{
  border-color:var(--teal);
  box-shadow:0 0 0 3px rgba(15,118,110,.14);
}

.auth-footer{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  margin-top:6px;
}

.btn{
  padding:10px 16px;
  border-radius:999px;
  border:1px solid transparent;
  font-weight:900;
  cursor:pointer;
  text-decoration:none;
  display:inline-block;
}

.btn-primary{
  background:var(--orange);
  color:#fff;
}

.btn-primary:hover{
  opacity:.92;
}

.auth-link{
  color:var(--teal);
  font-weight:800;
  text-decoration:none;
}

.auth-link:hover{
  text-decoration:underline;
}

.auth-error{
  font-size:12px;
  color:#dc2626;
  margin-top:4px;
}

/* =========================
   MOBILE RESPONSIVE
========================= */

@media (max-width:768px){

  body{
    overflow-x:hidden;
  }

  /* ================= TOPBAR ================= */

  .topbar{
    padding:0;
  }

  .topbar .wrap{

    flex-direction:column;

    align-items:center;

    justify-content:center;

    text-align:center;

    gap:6px;

    padding:8px 12px;

    font-size:11px;

  }

  .topbar .left{

    justify-content:center;

    gap:6px;

  }

  /* ================= NAVBAR ================= */

  .navbar .wrap{

  display:flex;

  flex-direction:row;

  align-items:center;

  justify-content:flex-start;

  padding:10px 14px;
  }

  .brand{

  width:auto;

  text-align:left;

  font-size:20px;

  font-weight:900;

  color:#0f766e;

  margin:0;
  }

  /* ================= LOGIN WRAP ================= */

  .auth-wrap{

    width:100%;

    min-height:100vh;

    display:flex;

    justify-content:center;

    align-items:flex-start;

    padding-top:80px;

    padding-left:16px;

    padding-right:16px;

  }

  /* ================= CARD ================= */

  .auth-card{

    width:100%;

    max-width:100%;

    background:#fff;

    border-radius:24px;

    overflow:hidden;

    border:1px solid var(--gray-200);

    box-shadow:
      0 10px 28px rgba(0,0,0,.08);

  }

  /* ================= HEADER ================= */

  .auth-head{

    padding:22px 20px;

  }

  .auth-head h1{

    font-size:24px;

    line-height:1.2;

    margin:0;

  }

  .auth-head p{

    margin-top:8px;

    font-size:13px;

    line-height:1.5;

  }

  /* ================= BODY ================= */

  .auth-body{

    padding:22px 20px;

  }

  .auth-form{

    display:flex;

    flex-direction:column;

    gap:16px;

  }

  .label{

    font-size:13px;

    margin-bottom:6px;

  }

  /* ================= INPUT ================= */

  .input{

    width:100%;

    height:52px;

    padding:0 16px;

    border-radius:14px;

    font-size:15px;

  }

  /* ================= BUTTON ================= */

  .auth-footer{

    margin-top:10px;

    display:flex;

    flex-direction:column;

    gap:12px;

  }

  .btn{

    width:100%;

    height:52px;

    border-radius:14px;

    font-size:15px;

    font-weight:800;

    display:flex;

    align-items:center;

    justify-content:center;

  }

  .auth-link{

    text-align:center;

    display:block;

    font-size:14px;

  }

}