@font-face {
  font-family: 'Petita Light';
  src: url('fonts/petita-light.woff2') format('woff2');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

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

:root {
  --bg-primary: #000000;
  --bg-secondary: rgba(28, 28, 30, 0.72);
  --bg-tertiary: rgba(44, 44, 46, 0.65);
  --bg-elevated: rgba(44, 44, 46, 0.8);
  --text-primary: rgba(255, 255, 255, 0.92);
  --text-secondary: rgba(255, 255, 255, 0.55);
  --text-tertiary: rgba(255, 255, 255, 0.35);
  --separator: rgba(255, 255, 255, 0.08);
  --accent: #0a84ff;
  --accent-hover: #409cff;
  --fill: rgba(120, 120, 128, 0.36);
  --fill-hover: rgba(120, 120, 128, 0.50);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-system: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

html {
  height: 100%;
}

body {
  height: 100%;
  font-family: var(--font-system);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Login page ── */
body.login-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-container {
  width: 100%;
  max-width: 360px;
  text-align: center;
}

.logo {
  font-family: 'Petita Light', serif;
  font-weight: 300;
  font-size: 2.4rem;
  letter-spacing: 0.06em;
  margin-bottom: 3rem;
  line-height: 1.2;
  color: #fff;
}

.login-card {
  background: var(--bg-secondary);
  backdrop-filter: blur(40px) saturate(150%);
  -webkit-backdrop-filter: blur(40px) saturate(150%);
  border: 1px solid var(--separator);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
}

.form-group {
  margin-bottom: 0.75rem;
}

.form-group input {
  width: 100%;
  padding: 0.7rem 0.85rem;
  font-size: 0.9375rem;
  font-family: var(--font-system);
  color: var(--text-primary);
  background: var(--fill);
  border: none;
  border-radius: var(--radius-sm);
  outline: none;
  transition: background 0.15s ease, box-shadow 0.15s ease;
  letter-spacing: -0.01em;
}

.form-group input::placeholder {
  color: var(--text-tertiary);
  font-size: 0.9375rem;
  text-transform: none;
  letter-spacing: -0.01em;
}

.form-group input:focus {
  background: var(--fill-hover);
  box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.3);
}

.submit-btn {
  width: 100%;
  padding: 0.7rem 1rem;
  font-size: 0.9375rem;
  font-family: var(--font-system);
  font-weight: 500;
  letter-spacing: -0.01em;
  text-transform: none;
  color: #fff;
  background-color: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.15s ease;
  margin-top: 0.5rem;
}

.submit-btn:hover {
  background-color: var(--accent-hover);
}

.submit-btn:active {
  opacity: 0.8;
}

.divider {
  margin: 1.75rem 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--separator);
}

.divider span {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  text-transform: none;
  letter-spacing: -0.01em;
}

.footer-link {
  display: inline-block;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
  letter-spacing: -0.01em;
}

.footer-link:hover {
  color: var(--accent-hover);
}

.error-msg {
  font-size: 0.8125rem;
  color: #ff453a;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

@media (max-width: 480px) {
  body.login-page {
    padding: 1.5rem;
  }

  .logo {
    font-size: 1.8rem;
    margin-bottom: 2.5rem;
  }

  .login-card {
    padding: 1.5rem 1.25rem;
  }
}