/* ==========================================
   jiriklos.com - Core Design System
   ========================================== */

:root {
  --bg: #1c1c24;
  --surface: #24242f;
  --border: #2e2e3e;
  --accent: #00ff87;
  --accent2: #0099ff;
  --text: #e8e8f0;
  --muted: #6a6a88;
  --font-display: 'Forum', serif;
  --font-mono: 'Lato', sans-serif;
  --nav-height: 70px;
  --container-width: 1100px;
  --radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
  background-color: var(--bg) !important;
}

body {
  background-color: var(--bg) !important;
  color: var(--text);
  font-family: var(--font-mono); /* Lato jako výchozí font */
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display); /* Forum */
  font-weight: 400; /* Forum ma jen 400 */
  line-height: 1.1;
  letter-spacing: 0em;
}

.mono {
  font-family: var(--font-mono); /* Lato */
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.8rem;
}

/* Layout */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 6rem 0;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(28, 28, 36, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.nav-logo {
  font-family: var(--font-display); /* Forum */
  font-weight: 400;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
  font-family: var(--font-mono); /* Lato */
  font-weight: 400;
}

.nav-links a:hover {
  color: var(--accent);
}

/* Nav Toggle (Hamburger) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 1100;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text);
  transition: var(--transition);
}

/* Hamburger Animace */
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    height: calc(100vh - var(--nav-height));
    background: rgba(28, 28, 36, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-top: 1px solid var(--border);
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.5rem;
    font-family: var(--font-display);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  border-radius: var(--radius);
  font-family: var(--font-mono); /* Lato */
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 255, 135, 0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--surface);
  border-color: var(--accent);
}

/* App Grid */
.app-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(1, 1fr);
  margin-top: 3rem;
}

@media (min-width: 640px) {
  .app-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .app-grid { grid-template-columns: repeat(3, 1fr); }
}

/* App Cards */
.app-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.app-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}

.app-card-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #121216;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}

.app-card-content {
  padding: 1.5rem;
}

.app-card-title {
  font-family: var(--font-display); /* Forum */
  font-weight: 400;
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.app-card-excerpt {
  font-family: var(--font-mono); /* Lato */
  font-weight: 300;
  color: var(--muted);
  font-size: 0.9rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, var(--surface) 25%, var(--border) 50%, var(--surface) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Footer */
footer {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

/* Utility */
.text-accent { color: var(--accent); }
.mt-1 { margin-top: 1rem; }
.mb-1 { margin-bottom: 1rem; }

/*==========================================
   Styles Extracted from index.html
   ==========================================*/

    /* Offset pro fixed navbar */
    body { padding-top: var(--nav-height); }

    /* Hero */
    .hero {
      min-height: calc(100vh - var(--nav-height));
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
      padding: 6rem 0 4rem;
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      background:
        radial-gradient(ellipse 60% 60% at 70% 50%, rgba(0, 255, 135, 0.06) 0%, transparent 70%),
        radial-gradient(ellipse 50% 50% at 20% 80%, rgba(0, 153, 255, 0.06) 0%, transparent 70%);
      pointer-events: none;
    }

    .hero-tag {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--accent);
      letter-spacing: 0.25em;
      text-transform: uppercase;
      margin-bottom: 1.5rem;
    }

    .hero h1 {
      font-size: clamp(2.5rem, 6vw, 5rem);
      font-weight: 900;
      line-height: 1.05;
      margin-bottom: 1.5rem;
      max-width: 700px;
    }

    .hero h1 em {
      font-style: normal;
      color: var(--accent);
    }

    .hero-sub {
      color: var(--muted);
      font-size: 1.15rem;
      max-width: 520px;
      margin-bottom: 2.5rem;
      line-height: 1.7;
    }

    /* Sekce nadpisy */
    .section-tag {
      font-family: var(--font-mono);
      font-size: 0.72rem;
      color: var(--accent);
      letter-spacing: 0.25em;
      text-transform: uppercase;
      margin-bottom: 0.75rem;
    }

    .section-title {
      font-size: clamp(1.8rem, 4vw, 2.8rem);
      font-weight: 800;
      margin-bottom: 1rem;
    }

    .section-lead {
      color: var(--muted);
      max-width: 600px;
      font-size: 1.05rem;
      line-height: 1.7;
    }

    /* Sekce #o-portalu */
    #o-portalu {
      border-top: 1px solid var(--border);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 3rem;
      margin-top: 3rem;
    }

    @media (min-width: 768px) {
      .about-grid { grid-template-columns: 1fr 1fr; }
    }

    .about-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 2rem;
    }

    .about-card-icon {
      font-size: 1.5rem;
      margin-bottom: 1rem;
    }

    .about-card h3 {
      font-size: 1.2rem;
      margin-bottom: 0.75rem;
    }

    .about-card p {
      color: var(--muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    /* Sekce #apps */
    #apps {
      border-top: 1px solid var(--border);
    }

    .apps-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      flex-wrap: wrap;
      gap: 1rem;
    }

    .error-state {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 3rem;
      text-align: center;
      color: var(--muted);
      margin-top: 3rem;
    }

    .error-state span {
      display: block;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: #ff7070;
      letter-spacing: 0.15em;
      margin-bottom: 0.75rem;
    }

    /* App card link obal */
    .app-card-link {
      display: block;
      text-decoration: none;
      color: inherit;
    }

    .app-card-img-placeholder {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: var(--border);
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-mono);
      font-size: 0.7rem;
      color: var(--muted);
    }

    /* Skeleton karty */
    .skeleton-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
    }

    .skeleton-img {
      width: 100%;
      aspect-ratio: 16 / 9;
    }

    .skeleton-content {
      padding: 1.5rem;
    }

    .skeleton-line {
      border-radius: 4px;
      margin-bottom: 0.75rem;
    }

    /* Sekce #kontakt */
    #kontakt {
      border-top: 1px solid var(--border);
    }

    .contact-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 3rem;
      text-align: center;
      max-width: 560px;
      margin: 3rem auto 0;
    }

    .contact-card p {
      color: var(--muted);
      margin-bottom: 1.5rem;
      line-height: 1.7;
    }

    .contact-card a.email-link {
      font-family: var(--font-mono);
      font-size: 0.9rem;
      color: var(--accent);
      letter-spacing: 0.05em;
    }

    .contact-card a.email-link:hover {
      text-decoration: underline;
    }