:root {
  --color-klein-blue: #002FA7;
  --color-klein-blue-soft: #E8ECF9;
  --color-bg: #F5F5F3;
  --color-surface: #FFFFFF;
  --color-text: #2B2B2E;
  --color-text-muted: #6B6B70;
  --color-border-dashed: rgba(0, 47, 167, 0.35);

  --font-display: 'Playfair Display', 'Noto Serif SC', Georgia, serif;
  --font-body: Georgia, 'Noto Serif SC', serif;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;

  --radius-md: 12px;
  --radius-lg: 20px;

  --transition-fast: 0.4s ease-in-out;
  --transition-slow: 0.8s ease-in-out;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0 0 var(--space-2);
}

p {
  margin: 0 0 var(--space-2);
}

a {
  color: var(--color-klein-blue);
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.emphasis {
  color: var(--color-klein-blue);
  font-weight: 700;
}

.placeholder-img {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2);
  background: linear-gradient(135deg, var(--color-klein-blue-soft), var(--color-surface));
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 0.85rem;
  border-radius: var(--radius-md);
  min-height: 240px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.button {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-klein-blue);
  border-radius: 999px;
  color: var(--color-klein-blue);
  margin: var(--space-3) 0;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.button--primary:hover {
  background: var(--color-klein-blue);
  color: #fff;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: var(--space-2) 0 var(--space-4);
}

.tag {
  border: 1px dashed var(--color-border-dashed);
  color: var(--color-klein-blue);
  border-radius: 999px;
  padding: 4px 14px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

@keyframes breathe {
  from { transform: translate(-50%, -50%) scale(0.95); opacity: 0.85; }
  to { transform: translate(-50%, -50%) scale(1.05); opacity: 1; }
}