/* ------------------------------
   Base Layout
--------------------------------*/
:root {
  --bg: #0d0d0d;
  --card-bg: #111;
  --text: #e6e6e6;
  --muted: #888;
  --primary: #2d7dff;
  --primary-hover: #4a8fff;
  --secondary: #333;
  --secondary-hover: #444;

  --radius: 10px;
  --transition: 0.2s ease;

  --fade-up: fadeUp 0.6s ease forwards;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

/* ------------------------------
   Card
--------------------------------*/
.card {
  background: var(--card-bg);
  padding: 3rem 3.5rem;
  border-radius: var(--radius);
  text-align: center;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 0 40px rgba(0,0,0,0.4);
  opacity: 0;
  animation: var(--fade-up);
}

/* ------------------------------
   Lock Icon (pure CSS)
--------------------------------*/
.icon-lock {
  width: 42px;
  height: 50px;
  margin: 0 auto 1.5rem;
  border: 3px solid var(--text);
  border-radius: 6px;
  position: relative;
  opacity: 0;
  animation: var(--fade-up);
  animation-delay: 0.1s;
}

.icon-lock::before {
  content: "";
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 22px;
  border: 3px solid var(--text);
  border-bottom: none;
  border-radius: 14px 14px 0 0;
}

/* ------------------------------
   Typography
--------------------------------*/
h1 {
  font-weight: 500;
  margin-bottom: 1rem;
  opacity: 0;
  animation: var(--fade-up);
  animation-delay: 0.2s;
}

.tagline {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 2rem;
  opacity: 0;
  animation: var(--fade-up);
  animation-delay: 0.3s;
}

/* ------------------------------
   Buttons
--------------------------------*/
.btn-row {
  margin-bottom: 2rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  margin: 0.4rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 1.05rem;
  color: white;
  transition: background var(--transition), transform var(--transition);
  opacity: 0;
  animation: var(--fade-up);
}

.btn.primary {
  background: var(--primary);
  animation-delay: 0.4s;
}

.btn.primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}

.btn.secondary {
  background: var(--secondary);
  animation-delay: 0.5s;
}

.btn.secondary:hover {
  background: var(--secondary-hover);
  transform: translateY(-2px);
}

/* ------------------------------
   Footer
--------------------------------*/
.footer {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
  opacity: 0;
  animation: var(--fade-up);
  animation-delay: 0.6s;
}