/* =========================================
   ThyssenKrupp Inspired Design System
   ========================================= */

:root {
  /* Corporate Colors */
  --tk-blue: #00A0F0;
  --tk-dark-blue: #003A8F;
  --tk-light-blue: #E6F4FB;

  /* Neutral Colors */
  --color-bg: #f5f7fa;
  --color-white: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;

  /* Semantic */
  --color-success: #2e7d32;
  --color-warning: #ff9800;
  --color-danger: #d32f2f;

  /* Layout */
  --radius: 10px;
  --shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  --transition: all 0.2s ease;

  /* Typography */
  --font-main: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}


/* =========================================
   Reset / Base
   ========================================= */

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

body {
  margin: 0;
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}


/* =========================================
   Layout
   ========================================= */

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem;
}


/* =========================================
   Header
   ========================================= */

header {
  background: var(--tk-blue);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
}

header img {
  max-width: 150px;
  height: auto;
  object-fit: contain;
}

header .title {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}


/* =========================================
   Typography
   ========================================= */

h1 {
  text-align: center;
  margin: 2rem 0;
  color: var(--tk-dark-blue);
  font-weight: 600;
}

h2 {
  margin-bottom: 1rem;
  color: var(--tk-dark-blue);
}

p {
  color: var(--color-muted);
}


/* =========================================
   Card Layout
   ========================================= */

.grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.card {
  background: var(--color-white);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;

  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.card ul {
  padding-left: 1.2rem;
  margin-bottom: 1.5rem;
}

.card li {
  margin-bottom: 0.5rem;
}


/* =========================================
   Buttons
   ========================================= */

.btn {
  display: inline-block;
  text-align: center;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  border: none;

  transition: var(--transition);
}

.btn-primary {
  background: var(--tk-blue);
  color: white;
}

.btn-primary:hover {
  background: #008cd1;
}

.btn-secondary {
  background: #e5e7eb;
  color: #333;
}

.btn-secondary:hover {
  background: #d1d5db;
}


/* =========================================
   Badge (z. B. SSL)
   ========================================= */

.badge {
  display: inline-block;
  margin-left: 8px;
  font-size: 0.75rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--color-success);
  color: white;
}


/* =========================================
   Links
   ========================================= */

a {
  color: var(--tk-blue);
  text-decoration: none;
  font-weight: 500;
}

a:hover {
  text-decoration: underline;
}


/* =========================================
   Footer
   ========================================= */

footer {
  margin: 3rem 0 1rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-muted);
}


/* =========================================
   Responsive Enhancements
   ========================================= */

@media (max-width: 600px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  header .title {
    font-size: 1.2rem;
  }

  header img {
    max-width: 120px;
  }
}