:root {
  color-scheme: light dark;
  --color-background: #061428;
  --color-background-light: #f2f6fb;
  --color-card: rgba(8, 30, 56, 0.9);
  --color-card-light: #ffffffee;
  --color-text: #f4f7ff;
  --color-text-light: #061428;
  --color-accent: #0a84ff;
  --color-accent-dark: #004b85;
  --color-muted: rgba(134, 160, 193, 0.65);
  --shadow-color: rgba(0, 43, 88, 0.45);
  --radius-lg: 26px;
  --radius-md: 14px;
  --max-width: 1024px;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at 10% 10%, rgba(10, 132, 255, 0.12), transparent 55%),
    radial-gradient(circle at 90% 15%, rgba(0, 75, 133, 0.18), transparent 60%),
    linear-gradient(140deg, #020b16 0%, #061428 45%, #0a1c35 100%);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem 1.5rem;
}

body.light {
  background: linear-gradient(160deg, #ffffff 0%, #f2f6fb 60%, #e2ecf9 100%);
  color: var(--color-text-light);
}

.container {
  width: 100%;
  max-width: var(--max-width);
}

.card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: 0 28px 48px -18px var(--shadow-color);
  padding: 3rem;
  backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.04);
  position: relative;
  overflow: hidden;
}

.card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(10, 132, 255, 0.12), transparent 60%);
  pointer-events: none;
}

body.light .card {
  background: var(--color-card-light);
  box-shadow: 0 24px 40px -18px rgba(0, 75, 133, 0.15);
  border: 1px solid rgba(6, 20, 40, 0.06);
}

h1 {
  font-size: 2.35rem;
  margin: 0;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.45rem;
  margin-bottom: 1rem;
}

p {
  line-height: 1.6;
  color: var(--color-muted);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(244, 247, 255, 0.7);
}

body.light p,
body.light .eyebrow {
  color: rgba(6, 20, 40, 0.65);
}

form {
  display: grid;
  gap: 1.1rem;
}

label {
  font-weight: 600;
  display: block;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

body.light label {
  color: var(--color-text-light);
}

input[type='email'],
input[type='password'],
input[type='text'] {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(122, 146, 176, 0.45);
  background: rgba(4, 18, 36, 0.65);
  color: inherit;
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

body.light input[type='email'],
body.light input[type='password'],
body.light input[type='text'] {
  background: rgba(255, 255, 255, 0.9);
}

input[type='email']:focus,
input[type='password']:focus,
input[type='text']:focus {
  outline: none;
  border-color: rgba(10, 132, 255, 0.6);
  box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.2);
}

button,
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(140deg, var(--color-accent), var(--color-accent-dark));
  border: none;
  color: white;
  font-weight: 600;
  padding: 0.9rem 1.35rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}

button:hover,
.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px -12px rgba(10, 132, 255, 0.55);
}

button.secondary,
.button.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: inherit;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

body.light button.secondary,
body.light .button.secondary {
  background: rgba(6, 20, 40, 0.04);
  border-color: rgba(6, 20, 40, 0.1);
  color: var(--color-text-light);
}

.alert {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 107, 107, 0.18);
  border: 1px solid rgba(255, 138, 138, 0.45);
  color: #ffd1d1;
  margin-bottom: 1rem;
}

body.light .alert {
  background: rgba(255, 135, 135, 0.14);
  border-color: rgba(219, 72, 72, 0.25);
  color: #a02020;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2.5rem;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand img {
  width: 64px;
  height: auto;
  filter: drop-shadow(0 12px 24px rgba(10, 132, 255, 0.25));
}

.brand .brand-copy {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.brand .brand-copy p {
  color: var(--color-text);
}

body.light .brand .brand-copy p {
  color: var(--color-text-light);
}

.brand small {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-muted);
}

body.light .brand small {
  color: rgba(6, 20, 40, 0.55);
}

.actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.75rem;
}

.app-card {
  background: rgba(4, 20, 38, 0.72);
  border-radius: 20px;
  padding: 1.9rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

body.light .app-card {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(6, 20, 40, 0.08);
}

.app-card h3 {
  margin: 0;
  font-size: 1.25rem;
}

.app-card p {
  flex: 1;
  margin: 0;
}

.app-card:hover {
  transform: translateY(-4px);
  border-color: rgba(10, 132, 255, 0.4);
  box-shadow: 0 18px 32px -18px rgba(10, 132, 255, 0.35);
}

.theme-toggle {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  opacity: 0.85;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.12);
}

body.light .theme-toggle {
  background: rgba(6, 20, 40, 0.05);
  border-color: rgba(6, 20, 40, 0.08);
}

.badge-strip {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  margin: 2.5rem 0 0;
}

.badge-strip img {
  height: 54px;
  width: auto;
  filter: drop-shadow(0 14px 28px rgba(0, 59, 105, 0.35));
}

.footer {
  text-align: center;
  margin-top: 2.5rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

small {
  opacity: 0.7;
}

@media (max-width: 600px) {
  .card {
    padding: 2rem;
  }

  h1 {
    font-size: 1.9rem;
  }

  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .brand {
    flex-direction: column;
    align-items: flex-start;
  }

  .brand img {
    width: 56px;
  }
}