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

:root {
  --cyan: #22d3ee;
  --purple: #a855f7;
  --bg: #0f172a;
  --card-bg: rgba(30, 41, 59, 0.4);
  --border: rgba(100, 116, 139, 0.3);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --tag-bg: rgba(51, 65, 85, 0.5);
}

html, body {
  height: 100%;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  min-height: 100vh;
  overflow: hidden;
}

/* Canvas pozadí */
#bg-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

/* Centrování stránky */
.page-wrapper {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

/* Glassmorphism karta */
.card {
  width: 100%;
  max-width: 480px;
  background: var(--card-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: scale(1.01);
  box-shadow: 0 25px 50px -12px rgba(34, 211, 238, 0.1);
}

/* Avatar */
.avatar-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.avatar-wrapper > div {
  position: relative;
}

.avatar-glow {
  position: absolute;
  inset: -4px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  border-radius: 50%;
  filter: blur(8px);
  opacity: 0.5;
  transition: opacity 0.5s ease;
}

.avatar-wrapper:hover .avatar-glow {
  opacity: 1;
}

.avatar {
  position: relative;
  width: 6rem;
  height: 6rem;
  background: var(--bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #334155;
  overflow: hidden;
}

.terminal-icon {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--cyan);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Textová část */
.text-section {
  text-align: center;
}

.heading {
  font-size: 2rem;
  font-weight: 700;
  font-family: 'Courier New', monospace;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 1rem;
  min-height: 2.5rem;
}

.cursor {
  color: var(--cyan);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.subtitle {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.muted {
  font-size: 0.85rem;
  color: #64748b;
  font-style: italic;
}

/* Tech stack tagy */
.tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 0;
}

.tag {
  padding: 0.25rem 0.75rem;
  background: var(--tag-bg);
  border: 1px solid #475569;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-family: 'Courier New', monospace;
  color: var(--cyan);
  cursor: default;
  transition: border-color 0.2s ease;
}

.tag:hover {
  border-color: var(--cyan);
}

/* Sociální sítě */
.socials {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  margin-top: 2rem;
}

.social-link {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: rgba(51, 65, 85, 0.3);
  border-radius: 0.75rem;
  color: var(--muted);
  text-decoration: none;
  transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

.social-link:hover {
  background: #475569;
  color: var(--cyan);
  transform: translateY(-4px);
}

.social-link svg {
  width: 1.4rem;
  height: 1.4rem;
}

/* Tooltip */
.tooltip {
  position: absolute;
  top: -2rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.2rem 0.5rem;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 0.3rem;
  font-size: 0.7rem;
  color: #fff;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.social-link:hover .tooltip {
  opacity: 1;
}

/* Footer */
.card-footer {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-text {
  font-size: 0.75rem;
  color: #475569;
  font-family: 'Courier New', monospace;
}

/* Odkaz na projekty */
.projects-link {
  display: inline-block;
  font-size: 0.82rem;
  font-family: 'Courier New', monospace;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
  letter-spacing: 0.03em;
}

.projects-link:hover {
  color: var(--cyan);
}

.projects-arrow {
  color: var(--cyan);
  transition: transform 0.2s ease;
  display: inline-block;
}

.projects-link:hover .projects-arrow {
  transform: translateX(4px);
}

/* ── STRÁNKA PROJEKTŮ ── */
body.projects-page {
  overflow-y: auto;
  min-height: 100vh;
}

.projects-page .page-wrapper {
  align-items: flex-start;
  padding: 2rem 1rem 3rem;
}

.projects-page .card {
  max-width: 720px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-family: 'Courier New', monospace;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 1.75rem;
  transition: color 0.2s;
}

.back-link:hover { color: var(--cyan); }

.projects-header {
  margin-bottom: 1.75rem;
}

.projects-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: 'Courier New', monospace;
  color: #fff;
  margin-bottom: 0.4rem;
}

.projects-header p {
  font-size: 0.85rem;
  color: var(--muted);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.project-card {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 1.25rem 1.4rem;
  transition: border-color 0.2s, transform 0.2s;
}

.project-card:hover {
  border-color: rgba(34, 211, 238, 0.35);
  transform: translateY(-2px);
}

.project-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
  gap: 0.75rem;
}

.project-name {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  font-family: 'Courier New', monospace;
}

.project-links {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.project-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.65rem;
  background: rgba(51, 65, 85, 0.4);
  border: 1px solid #475569;
  border-radius: 6px;
  font-size: 0.72rem;
  color: var(--muted);
  text-decoration: none;
  font-family: 'Courier New', monospace;
  transition: border-color 0.2s, color 0.2s;
}

.project-link-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.project-link-btn svg {
  width: 0.85rem;
  height: 0.85rem;
}

.project-desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 0.85rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* Obrázky projektu */
.project-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-images:empty {
  display: none;
}

.project-img {
  width: 100%;
  height: 130px;
  object-fit: cover;
  border-radius: 0.4rem;
  border: 1px solid var(--border);
  cursor: zoom-in;
  transition: opacity 0.2s, border-color 0.2s;
}

.project-img:hover {
  opacity: 0.85;
  border-color: rgba(34, 211, 238, 0.4);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.2s;
}

.lightbox.visible {
  opacity: 1;
}

.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
}