* { margin: 0; padding: 0; box-sizing: border-box; }

body{
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  min-height: 100vh;
  color: #111;
}

/* dark overlay */
body::before{
  content:"";
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 0;
}

header{
  position: relative;
  z-index: 2;
  display:flex;
  justify-content: space-between;
  align-items:center;
  padding: 24px 56px;
}

.logo{ display:flex; align-items:center; height:2rem; }
.logo-container{ display:flex; align-items:center; }
.waka{ margin-left:10px; }
.logo-text{ font-weight: bold; }

.nav-actions button{
  border-radius: 14px;
  padding: 10px 18px;
  font-size: 14px;
  border: none;
  cursor: pointer;
  margin-left: 10px;
}
.login-btn{ background:#fff; color:#000; }
.signup-btn{ background:#000; color:#fff; }

.left-nav{ display:flex; align-items:center; }

main{
  position: relative;
  z-index: 2;
  min-height: calc(100vh - 260px);
  display:flex;
  align-items:center;
  justify-content:center;
}

.card{
  width: min(820px, 92vw);
  background:#fff;
  border-radius: 18px;
  padding: 36px 32px;
  margin: 20px 0 40px;
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
}

.back a{
  font-size: 14px;
  color: #6b7280;
  margin-bottom: 22px;
  cursor:pointer;
  text-decoration:none;
}

.brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap: 6px;
  margin-bottom: 26px;
}
.brand h1{ font-size: 22px; font-weight: 700; }
.brand p{
  font-size: 14px;
  color:#6b7280;
  text-align:center;
  line-height:1.5;
}

.field{ margin-bottom: 16px; }
.field label{
  display:block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
}

.input{
  display:flex;
  align-items:center;
  gap: 10px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 12px 14px;
}
.input input{
  border:none;
  outline:none;
  width:100%;
  font-size: 14px;
}

/* 2-column rows */
.field-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}
.field-grid .field{ margin-bottom: 0; }

@media (max-width: 720px){
  .field-grid{ grid-template-columns: 1fr; gap: 12px; }
}

.submit{
  width:100%;
  margin-top: 10px;
  background:#000;
  color:#fff;
  border:none;
  padding: 14px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 500;
  cursor:pointer;
}
.submit:disabled{
  opacity: .65;
  cursor: not-allowed;
}

.alt{
  margin-top: 18px;
  font-size: 14px;
  text-align:center;
}
.alt a{
  color:#a855f7;
  text-decoration:none;
  font-weight:500;
}

/* Alerts + field errors */
.form-alert{
  border: 1px solid #fecaca;
  background: #fff1f2;
  color: #991b1b;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 13px;
  margin: 0 0 14px;
}

.field-error{
  margin-top: 6px;
  font-size: 12px;
  color: #b91c1c;
  min-height: 16px;
}

.field-hint{
  margin-top: 6px;
  font-size: 12px;
  color: #6b7280;
}

/* invalid/valid */
.field.is-invalid .input{
  border-color: rgba(239, 68, 68, 0.65);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}
.field.is-valid .input{
  border-color: rgba(34, 197, 94, 0.45);
}

/* password meter */
.pw-meter{
  margin-top: 10px;
  height: 8px;
  border-radius: 999px;
  background: #e5e7eb;
  overflow:hidden;
}
.pw-meter-bar{
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: #9ca3af;
  transition: width .2s ease, background-color .2s ease;
}
.pw-meter-text{
  margin-top: 8px;
  font-size: 12px;
  color: #6b7280;
}

footer{
  background:#000;
  color:#f9fafb;
  padding: 56px 24px 32px;
}
.footer-inner{ max-width: 1200px; margin: 0 auto; }
.footer-top{
  display:grid;
  grid-template-columns: minmax(0, 2.1fr) repeat(3, minmax(0, 1.1fr));
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(55,65,81,.7);
}
.footer-logo-row{ display:flex; flex-direction:column; gap: 14px; }
.footer-logo{ display:flex; align-items:center; gap: 10px; }
.footer-logo-text{ font-size: 20px; font-weight: 600; }
.footer-logo-text span{ font-weight: 400; }
.footer-desc{
  font-size: 13px;
  color: rgba(249,250,251,.85);
  max-width: 280px;
}
.footer-social{ margin-top: 8px; }
.footer-social a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(249,250,251,.6);
  font-size: 16px;
}
.footer-col-title{ font-size: 14px; font-weight: 600; margin-bottom: 10px; }
.footer-links{
  list-style:none;
  font-size: 13px;
  display:flex;
  flex-direction:column;
  gap: 6px;
}
.footer-links a{ color: rgba(249,250,251,.86); }
.footer-bottom{
  padding-top: 18px;
  font-size: 12px;
  color: rgba(156,163,175,.9);
  text-align:center;
}

@media (max-width: 900px){
  .footer-top{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 790px){
  .nav-li{ display:none; }
}
@media (max-width: 600px){
  header{ padding: 20px; }
  .card{ width: 92%; }
  .footer-top{ grid-template-columns: 1fr; }
}

.terms{
  margin: 8px 0 6px;
}

.terms-row{
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: #374151;
  line-height: 1.35;
  user-select: none;
}

.terms-row input[type="checkbox"]{
  width: 16px;
  height: 16px;
  margin-top: 2px;
  accent-color: #000;
}

.terms-row a{
  color: #a855f7;
  text-decoration: none;
  font-weight: 500;
}

.terms-row a:hover{
  text-decoration: underline;
}