@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');
:root {
  --red-dark: #991b1b;
  --red: #dc2626;
  --red-light: #f87171;
  --gray-light: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-800: #1f2937;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Inter', sans-serif;
  background: #fff;
  color: #1a1a1a;
  line-height: 1.6;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
  position: relative;
}
a::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: currentColor;
  bottom: -4px;
  left: 0;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}
a:hover::after {
  transform: scaleX(1);
}
img {
  max-width: 100%;
  display: block;
}
header {
  background: var(--red-dark);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0,0,0,0.10);
}
nav {
  display: flex;
  gap: 1rem;
}
nav a {
  color: #fff;
  font-weight: 600;
  transition: color 0.2s;
}
nav a:hover {
  color: var(--red-light);
}
.hero {
  background: linear-gradient(120deg, var(--red), var(--red-dark));
  color: #fff;
  padding: 4rem 1rem;
  text-align: center;
}
.container {
  max-width: 600px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  background: #fff;
  border-radius: 1rem;
  box-shadow: 0 2px 16px rgba(0,0,0,0.04);
}
footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.95rem;
  color: #6b7280;
  border-top: 1px solid var(--gray-200);
  margin-top: 3rem;
}
.animate {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s, transform 0.6s;
}
.animate.visible {
  opacity: 1;
  transform: translateY(0);
}
input[type=email], input[type=password] {
  font-family: inherit;
  font-size: 1rem;
  margin-bottom: 1rem;
}
button {
  cursor: pointer;
}