:root {
  --radius: 8px;
  --bg-dark: rgba(0,0,0,0.65);
  --form-bg: rgba(23,23,23,0.8);
  --transition: .25s ease;
  --shadow: 0 30px 60px -10px rgba(0,0,0,.5);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Poppins', system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
  color: #f5f5f5;
  min-height: 100vh;
  background: black;
}

.bg-wrapper {
  position: relative;
  width: 100%;
  min-height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.bg-wrapper {
  background: 
    linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.85) 70%),
    url(assets/images/SignIn_bg.jpg) center/cover no-repeat fixed;
}

.overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.site-header {
  padding: 20px 30px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  z-index: 2;
}

.logo {
  width: 120px;
  display: block;
  filter: drop-shadow(0 4px 16px rgba(255,0,0,0.4));
  cursor: pointer;
}

.form-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 20px;
  z-index: 2;
}

.card {
  background: var(--form-bg);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.05);
  padding: 2.2rem 2rem 1.8rem;
  border-radius: 12px;
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow);
  position: relative;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.card:hover {
  box-shadow: 0 0 25px rgba(229, 9, 20, 0.7), 0 0 40px rgba(229, 9, 20, 0.4);
  transform: translateY(-5px);
  transform: scale(1.02);
}

.card h1 {
  margin: 0 0 1rem;
  font-family: 'Martel Sans', serif;
  font-weight: 800;
  font-size: 2.25rem;
  letter-spacing: 0.5px;
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #ccc;
}

.field input {
  padding: 14px 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 6px;
  font-size: 1rem;
  color: #fff;
  outline: none;
  transition: var(--transition);
}

.field input:focus {
  border-color: #e50914;
  box-shadow: 0 0 0 3px rgba(229,9,20,0.3);
}

.primary-btn {
  margin-top: 4px;
  padding: 14px;
  background: #e50914;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  cursor: pointer;
  border-radius: 6px;
  width: 100%;
  letter-spacing: 0.5px;
  transition: filter .2s ease;
}

.primary-btn:hover {
  filter: brightness(1.08);
}

.primary-btn:active {
  transform: translateY(1px);
}

.switch {
  font-size: 0.9rem;
  margin: 0;
  text-align: center;
}

.switch a {
  color: #fff;
  text-decoration: underline;
}

.switch a:hover {
  color: #e50914;
}

.legal {
  text-align: center;
  font-size: 0.65rem;
  padding: 12px 16px;
  color: #999;
  font-family: system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
}

.legal a {
  color: #999;
  text-decoration: underline;
}

@media (max-width: 720px) {
  .card {
    padding: 1.8rem 1.5rem;
  }

  .card h1 {
    font-size: 1.85rem;
    text-align: center;
  }
}