@import url("https://fonts.googleapis.com/css2?family=DM+Sans:opsz,wght@9..40,500;9..40,700&display=swap");

:root {
  /* Colors */
  --color-black: hsl(253, 69%, 8%);
  --color-white: hsl(0, 0%, 100%);
  --color-gray-light: hsl(0, 0%, 80%);
  --color-gray: hsl(0, 0%, 50%);
  --color-surface: hsl(0, 0%, 97%);
  --color-surface-elevated: hsl(0, 0%, 100%);
  --color-accent: hsl(214, 100%, 60%);
  --color-accent-dark: hsl(214, 100%, 50%);

  /* Typography */
  --ff-sans: "DM Sans", sans-serif;
  --font-size-1: 1rem;
  --font-size-title: 2rem;
  --font-weight-700: 700;
  --font-weight-500: 500;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-s: 1rem;
  --space-l: 2rem;
  --space-xl: 3rem;

  /* Border Radius */
  --radius-m: 0.75rem;
  --radius-l: 1.5rem;

  /* Shadows */
  --shadow-elevated: 0 1.5rem 3rem hsla(253, 69%, 8%, 0.15);
  --shadow-hover: 0 2rem 4rem hsla(253, 69%, 8%, 0.2);
}

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

html,
body {
  height: 100%;
}

body {
  font-family: var(--ff-sans);
  background: linear-gradient(
    135deg,
    var(--color-surface) 0%,
    var(--color-surface-elevated) 100%
  );
  color: var(--color-black);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-l);
}

.container {
  width: 100%;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* Header */
.header {
  text-align: center;
  margin-bottom: var(--space-l);
}

.title {
  font-size: 3.5rem;
  font-weight: var(--font-weight-700);
  color: var(--color-black);
  margin-bottom: var(--space-s);
  background: linear-gradient(
    135deg,
    var(--color-accent) 0%,
    var(--color-accent-dark) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 1.3rem;
  color: var(--color-gray);
  font-weight: var(--font-weight-500);
}

/* Main */
.main {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* Description */
.description {
  text-align: center;
  padding: var(--space-xl);
  background: var(--color-surface-elevated);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-elevated);
}

.description h2 {
  font-size: 1.5rem;
  color: var(--color-black);
  margin-bottom: var(--space-s);
}

.description p {
  font-size: 1.05rem;
  color: var(--color-gray);
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto;
}

/* Links Section */
.links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-l);
}

/* Cards */
.card {
  text-decoration: none;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-l);
  padding: var(--space-xl);
  box-shadow: var(--shadow-elevated);
  transition: all 0.3s ease;
  border: 2px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-accent);
}

.card-content {
  text-align: center;
  width: 100%;
}

.card h3 {
  font-size: 1.5rem;
  color: var(--color-black);
  margin-bottom: var(--space-xs);
}

.card p {
  color: var(--color-gray);
  margin-bottom: var(--space-l);
  font-size: 0.95rem;
}

.arrow {
  display: inline-block;
  font-size: 1.5rem;
  color: var(--color-accent);
  transition: transform 0.3s ease;
}

.card:hover .arrow {
  transform: translateX(4px);
}

.card-app {
  background: linear-gradient(
    135deg,
    rgba(50, 130, 255, 0.05) 0%,
    rgba(50, 130, 255, 0.02) 100%
  );
}

.card-app:hover {
  border-color: var(--color-accent);
}

.card-admin {
  background: linear-gradient(
    135deg,
    rgba(100, 100, 200, 0.05) 0%,
    rgba(100, 100, 200, 0.02) 100%
  );
}

.card-admin:hover {
  border-color: var(--color-accent);
}

/* Footer */
.footer {
  text-align: center;
  padding: var(--space-l);
  color: var(--color-gray);
  font-size: 0.9rem;
  border-top: 1px solid var(--color-gray-light);
}

/* Responsive */
@media (max-width: 768px) {
  body {
    padding: var(--space-s);
  }

  .title {
    font-size: 2.5rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  .links {
    grid-template-columns: 1fr;
  }

  .header {
    margin-bottom: var(--space-s);
  }

  .container {
    gap: var(--space-l);
  }
}

@media (max-width: 480px) {
  .title {
    font-size: 2rem;
  }

  .description {
    padding: var(--space-l);
  }

  .card {
    padding: var(--space-l);
  }
}