/* ==========================================================================
   IT-SKALKA.CZ - Moderní Portfolio IT Specialisty
   Optimalizováno pro rychlost, moderní vzhled, čisté UTF-8 a nulové nároky
   ========================================================================== */

:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: #161f33;
  --bg-card-hover: #1e2942;
  --bg-glass: rgba(22, 31, 51, 0.75);
  --border-color: #263352;
  --border-highlight: #3b82f6;
  
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  
  --accent-blue: #38bdf8;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-indigo: #6366f1;
  --accent-amber: #f59e0b;
  --accent-gradient: linear-gradient(135deg, #38bdf8 0%, #6366f1 50%, #10b981 100%);
  --hero-glow: radial-gradient(circle at 50% 30%, rgba(56, 189, 248, 0.15) 0%, rgba(11, 15, 25, 0) 70%);

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.2);
}

/* --- Světlý režim (Light mode) --- */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --border-color: #e2e8f0;
  --border-highlight: #0284c7;
  
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  
  --accent-blue: #0284c7;
  --accent-cyan: #0891b2;
  --accent-emerald: #059669;
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.07);
  --hero-glow: radial-gradient(circle at 50% 30%, rgba(2, 132, 199, 0.08) 0%, rgba(248, 250, 252, 0) 70%);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  background-image: var(--hero-glow);
  background-attachment: fixed;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

a:hover {
  color: var(--accent-cyan);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigace --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 74px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: var(--transition);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.brand-logo .logo-badge {
  background: var(--accent-gradient);
  color: #ffffff;
  padding: 4px 9px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-blue);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.theme-toggle {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  transition: var(--transition);
}

.theme-toggle:hover {
  border-color: var(--accent-blue);
  transform: rotate(15deg);
}

.btn-contact-nav {
  background: var(--accent-gradient);
  color: #ffffff !important;
  padding: 9px 20px;
  border-radius: var(--border-radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.3);
  transition: var(--transition);
}

.btn-contact-nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.45);
  text-decoration: none;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.8rem;
  cursor: pointer;
}

/* --- Hero Sekce --- */
.hero {
  padding: 140px 0 80px 0;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent-blue);
  border-radius: 30px;
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -1px;
  max-width: 950px;
  margin: 0 auto 24px auto;
}

.hero-title span.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 820px;
  margin: 0 auto 36px auto;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  padding: 14px 32px;
  border-radius: var(--border-radius-sm);
  font-weight: 700;
  font-size: 1.05rem;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-glow);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(56, 189, 248, 0.4);
  color: #ffffff;
  text-decoration: none;
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 14px 28px;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: 1.05rem;
  border: 1px solid var(--border-color);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--accent-blue);
  background: var(--bg-card-hover);
  color: var(--text-primary);
  text-decoration: none;
  transform: translateY(-2px);
}

/* Rychlé statistiky / pilíře */
.hero-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 24px;
  text-align: left;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.pillar-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-blue);
}

.pillar-card:nth-child(2)::before { background: var(--accent-emerald); }
.pillar-card:nth-child(3)::before { background: var(--accent-indigo); }
.pillar-card:nth-child(4)::before { background: var(--accent-amber); }

.pillar-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
  border-color: var(--border-highlight);
}

.pillar-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.pillar-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

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

/* --- Sekce Obecně --- */
.section {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 55px auto;
}

.section-tag {
  color: var(--accent-blue);
  font-weight: 800;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* --- Filozofie & Komplexní přístup --- */
.about-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
  margin-bottom: 40px;
}

.about-box p {
  font-size: 1.15rem;
  line-height: 1.75;
  margin-bottom: 20px;
}

.about-box p:last-child {
  margin-bottom: 0;
}

.lifecycle-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
  justify-content: center;
}

.lifecycle-step {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 8px 18px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.lifecycle-step span {
  color: var(--accent-emerald);
}

/* --- Diagram Řetězce Infrastruktury --- */
.flow-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 36px;
  margin: 40px 0;
  text-align: center;
}

.flow-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.flow-chain {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.flow-node {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 10px 16px;
  border-radius: var(--border-radius-sm);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-primary);
  transition: var(--transition);
}

.flow-node:hover {
  border-color: var(--accent-blue);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.2);
}

.flow-arrow {
  color: var(--accent-blue);
  font-weight: 800;
  font-size: 1.1rem;
}

/* --- Interaktivní Filtrování Dovedností --- */
.filter-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px 20px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-blue);
  color: #0b0f19;
  border-color: var(--accent-blue);
  font-weight: 700;
}

/* --- Karty Služeb a Technologií --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 28px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 30px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.skill-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-highlight);
  box-shadow: 0 16px 35px -10px rgba(0, 0, 0, 0.6);
}

.skill-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.skill-card-icon {
  width: 52px;
  height: 52px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  flex-shrink: 0;
}

.skill-card-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
}

.skill-card-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.skill-tag {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--accent-blue);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
}

.skill-items-list {
  list-style: none;
  margin-bottom: 18px;
}

.skill-items-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 7px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.skill-items-list li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent-emerald);
  font-weight: bold;
}

/* Callout bloky uvnitř karet */
.skill-callout {
  background: rgba(56, 189, 248, 0.08);
  border-left: 3px solid var(--accent-blue);
  padding: 12px 14px;
  border-radius: 0 6px 6px 0;
  font-size: 0.88rem;
  margin: 14px 0;
}

.skill-callout.amber {
  background: rgba(245, 158, 11, 0.08);
  border-left-color: var(--accent-amber);
}

.skill-callout.emerald {
  background: rgba(16, 185, 129, 0.08);
  border-left-color: var(--accent-emerald);
}

/* --- Troubleshooting & Řešení problémů --- */
.troubleshoot-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
}

.troubleshoot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.troubleshoot-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 14px 18px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.troubleshoot-item span.icon {
  color: var(--accent-emerald);
  font-size: 1.1rem;
}

/* --- Ukázky webů & Reference (Portfolio) --- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 28px;
}

.portfolio-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.portfolio-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-blue);
  box-shadow: 0 18px 38px -10px rgba(56, 189, 248, 0.28);
}

.portfolio-mockup {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.mockup-dot.red { background: #ef4444; }
.mockup-dot.yellow { background: #f59e0b; }
.mockup-dot.green { background: #10b981; }

.mockup-url {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 0.82rem;
  color: var(--accent-blue);
  font-family: var(--font-mono);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.portfolio-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.portfolio-badge {
  display: inline-block;
  align-self: flex-start;
  padding: 4px 12px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent-blue);
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.portfolio-badge.emerald {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.25);
  color: var(--accent-emerald);
}

.portfolio-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.portfolio-subtitle {
  font-size: 0.95rem;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: 16px;
}

.portfolio-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.portfolio-features {
  list-style: none;
  margin-bottom: 22px;
}

.portfolio-features li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.portfolio-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-emerald);
  font-weight: bold;
}

.portfolio-footer {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.btn-portfolio-link {
  background: var(--accent-gradient);
  color: #ffffff !important;
  padding: 9px 18px;
  border-radius: var(--border-radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.25);
}

.btn-portfolio-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(56, 189, 248, 0.4);
  text-decoration: none;
}

/* --- Kontaktní Sekce --- */
.contact-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 36px;
  box-shadow: var(--shadow-card);
}

.contact-info-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.contact-info-desc {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.contact-channel {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.channel-icon {
  width: 48px;
  height: 48px;
  background: rgba(56, 189, 248, 0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--accent-blue);
  flex-shrink: 0;
}

.channel-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
}

.channel-value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.copy-email-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  margin-left: 10px;
  transition: var(--transition);
}

.copy-email-btn:hover {
  background: var(--accent-blue);
  color: #0b0f19;
}

/* Formulář */
.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 36px;
  box-shadow: var(--shadow-card);
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

textarea.form-control {
  resize: vertical;
  min-height: 130px;
}

.form-status {
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: var(--border-radius-sm);
  display: none;
  font-size: 0.95rem;
  line-height: 1.5;
}

.form-status.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.35);
}

.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.35);
}

/* --- Patička --- */
.site-footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-domain {
  font-weight: 700;
  color: var(--text-primary);
}

/* Scroll to top */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--accent-gradient);
  color: #ffffff;
  border: none;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.35);
  transition: var(--transition);
  z-index: 999;
}

.scroll-top:hover {
  transform: translateY(-4px);
}

.scroll-top.visible {
  display: flex;
}

/* --- Responzivita --- */
@media screen and (max-width: 992px) {
  .hero-title {
    font-size: 2.5rem;
  }
  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media screen and (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  }
  .nav-links.open {
    display: flex;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-subtitle {
    font-size: 1.1rem;
  }
  .skills-grid {
    grid-template-columns: 1fr;
  }
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

/* --- Cookie Banner & Modal --- */
.cookie-banner {
  position: fixed;
  bottom: 24px;
  right: 24px;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
  padding: 24px;
  z-index: 99999;
  transform: translateY(120%);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.35s ease, visibility 0.35s;
}

.cookie-banner.show {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.cookie-banner-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.cookie-banner-icon {
  font-size: 22px;
  line-height: 1;
}

.cookie-banner-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.cookie-banner-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 18px;
}

.cookie-banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Tlačítka pro cookies */
.cookie-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  font-family: inherit;
}

.cookie-btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  border: none;
  box-shadow: 0 2px 8px rgba(56, 189, 248, 0.25);
}

.cookie-btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
  color: #ffffff;
}

.cookie-btn-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.cookie-btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-highlight);
  color: var(--text-primary);
}

.cookie-btn-outline {
  background-color: transparent;
  color: var(--text-muted);
  border-color: var(--border-color);
}

.cookie-btn-outline:hover {
  color: var(--text-primary);
  border-color: var(--border-highlight);
}

/* Patička link pro cookies */
.cookie-footer-link {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-family: inherit;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  text-decoration: underline;
  transition: var(--transition);
}

.cookie-footer-link:hover {
  color: var(--accent-blue);
}

/* Modal pro nastavení cookies */
.cookie-modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100000;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.cookie-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.cookie-modal-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  max-width: 520px;
  width: 100%;
  padding: 28px;
  box-shadow: var(--shadow-card);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.cookie-modal-overlay.active .cookie-modal-box {
  transform: scale(1);
}

.cookie-modal-close {
  position: absolute;
  top: 16px;
  right: 18px;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
}

.cookie-modal-close:hover {
  color: var(--text-primary);
  background-color: var(--bg-card-hover);
}

.cookie-modal-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  padding-right: 30px;
}

.cookie-modal-lead {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.5;
}

.cookie-category {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 14px 16px;
  margin-bottom: 12px;
}

.cookie-category-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.cookie-category-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.cookie-category-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0;
}

.cookie-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
}

.cookie-badge.required {
  background-color: rgba(56, 189, 248, 0.15);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

/* Toggle Switch */
.cookie-toggle {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  cursor: pointer;
}

.cookie-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.cookie-toggle-slider {
  position: absolute;
  inset: 0;
  background-color: var(--border-color);
  border-radius: 24px;
  transition: 0.25s;
}

.cookie-toggle-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: #ffffff;
  border-radius: 50%;
  transition: 0.25s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.cookie-toggle input:checked + .cookie-toggle-slider {
  background: var(--accent-gradient);
}

.cookie-toggle input:checked + .cookie-toggle-slider:before {
  transform: translateX(20px);
}

.cookie-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

@media screen and (max-width: 600px) {
  .cookie-banner {
    bottom: 12px;
    right: 12px;
    left: 12px;
    max-width: none;
    padding: 18px;
  }
  
  .cookie-banner-actions {
    flex-direction: column;
  }
  
  .cookie-banner-actions .cookie-btn {
    width: 100%;
  }

  .cookie-modal-actions {
    flex-direction: column-reverse;
  }

  .cookie-modal-actions .cookie-btn {
    width: 100%;
  }
}