/* ===== VARIABLES ===== */
:root {
  --bg: #f0f4f8;
  --surface: #ffffff;
  --border: #dce3ec;
  --text: #1e293b;
  --muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

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

/* ===== BASE ===== */
body {
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 48px 20px 64px;
}

/* ===== HEADER ===== */
header {
  text-align: center;
  margin-bottom: 48px;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

header p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 1rem;
}

/* ===== GRILLE DES OUTILS ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  width: 100%;
  max-width: 720px;
}

/* ===== CARTE ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 24px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.card-icon {
  font-size: 2rem;
  line-height: 1;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.5;
}

.card-link {
  margin-top: auto;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

/* ===== FOOTER ===== */
footer {
  margin-top: 64px;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 480px) {
  body {
    padding: 28px 16px 48px;
  }

  header {
    margin-bottom: 32px;
  }

  header h1 {
    font-size: 1.5rem;
  }

  .tools-grid {
    gap: 16px;
  }

  .card {
    padding: 20px 18px;
  }
}