/* 
   OVZ UJEP Website Design System
   Created: June 2026
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Brand Palette */
  --color-primary: #005c8a;
  --color-primary-dark: #003e5e;
  --color-primary-light: #eaf4f9;
  --color-accent: #00a3e0;
  --color-accent-hover: #0087ba;
  
  /* Neutral Palette */
  --color-bg-main: #f8fafc;
  --color-bg-card: #ffffff;
  --color-bg-muted: #f1f5f9;
  --color-text-dark: #0f172a;
  --color-text-muted: #475569;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;

  /* Status Palette */
  --color-success: #10b981;
  --color-success-bg: #ecfdf5;
  --color-warning: #f59e0b;
  --color-warning-bg: #fffbeb;
  --color-info: #3b82f6;
  --color-info-bg: #eff6ff;

  /* Typography */
  --font-headings: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Shadows & Radius */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-main);
  color: var(--color-text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.25;
}

h1 {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

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

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

/* Layout Elements */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Navigation */
header.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  display: flex;
  align-items: center;
  box-shadow: var(--shadow-sm);
}

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

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  font-family: var(--font-headings);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1.1;
  display: flex;
  flex-direction: column;
}

.logo-subtext {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

nav.main-nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

nav.main-nav a {
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

nav.main-nav a:hover,
nav.main-nav li.active a {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background-color: var(--color-primary-dark);
  margin: 5px 0;
  transition: var(--transition-normal);
}

/* Page Layout */
main {
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height) - 260px);
  padding: 3rem 0;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, #032b40 100%);
  color: white;
  padding: 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  margin-top: calc(-3rem);
  margin-bottom: 3rem;
  box-shadow: var(--shadow-lg);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 80% 20%, rgba(0, 163, 224, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.hero h1 {
  color: white;
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.25rem;
  max-width: 700px;
  margin: 0 auto 2.5rem auto;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem auto;
}

.section-header h2 {
  font-size: 2.25rem;
  color: var(--color-primary-dark);
  position: relative;
  display: inline-block;
  padding-bottom: 0.75rem;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
}

.section-header p {
  font-size: 1.1rem;
  margin-top: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

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

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: white;
  color: white;
}

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

.btn-dark:hover {
  background-color: var(--color-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-bg-muted);
  color: var(--color-text-dark);
}

.btn-secondary:hover {
  background-color: var(--color-border);
  color: var(--color-text-dark);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

/* Card Grids */
.grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 3rem;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Cards */
.card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

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

.card-icon {
  width: 54px;
  height: 54px;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
  font-size: 1.5rem;
}

.card h3 {
  margin-bottom: 0.75rem;
  color: var(--color-primary-dark);
}

.card p {
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-action {
  margin-top: auto;
}

/* Search and Filter Area */
.search-filter-area {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.search-box {
  position: relative;
  width: 100%;
}

.search-box input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.75rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-main);
  color: var(--color-text-dark);
  transition: all var(--transition-fast);
}

.search-box input:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: white;
  box-shadow: 0 0 0 3px rgba(0, 163, 224, 0.15);
}

.search-box svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
}

.filter-tab {
  padding: 0.5rem 1.25rem;
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  background-color: var(--color-bg-muted);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.filter-tab:hover {
  background-color: var(--color-border);
  color: var(--color-text-dark);
}

.filter-tab.active {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* FAQ Accordion */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 3rem;
}

.accordion-item {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.accordion-item:hover {
  border-color: var(--color-accent);
}

.accordion-header {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  user-select: none;
  transition: background-color var(--transition-fast);
}

.accordion-header:hover {
  background-color: var(--color-primary-light);
}

.accordion-header h3 {
  font-size: 1.1rem;
  margin-bottom: 0;
  color: var(--color-primary-dark);
  font-weight: 600;
  line-height: 1.4;
}

.accordion-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.accordion-icon svg {
  width: 20px;
  height: 20px;
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  background-color: white;
}

.accordion-content-inner {
  padding: 1.5rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.accordion-item.active {
  border-color: var(--color-primary);
}

.accordion-item.active .accordion-content {
  max-height: 1000px; /* high value to expand */
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

/* Alert Boxes / Notifications */
.alert {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  border-left: 5px solid;
  display: flex;
  gap: 1rem;
}

.alert-icon {
  flex-shrink: 0;
  font-size: 1.25rem;
}

.alert-success {
  background-color: var(--color-success-bg);
  border-color: var(--color-success);
  color: #065f46;
}

.alert-warning {
  background-color: var(--color-warning-bg);
  border-color: var(--color-warning);
  color: #92400e;
}

.alert-info {
  background-color: var(--color-info-bg);
  border-color: var(--color-info);
  color: #1e40af;
}

/* Document Cards styling */
.doc-card {
  display: flex;
  align-items: center;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  transition: all var(--transition-normal);
  gap: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.doc-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.doc-badge {
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.doc-badge.pdf {
  background-color: #fef2f2;
  color: #ef4444;
}

.doc-badge.xlsx {
  background-color: #ecfdf5;
  color: #10b981;
}

.doc-badge.doc {
  background-color: #eff6ff;
  color: #3b82f6;
}

.doc-badge.video {
  background-color: #fff1f2;
  color: #f43f5e;
}

.doc-badge.link {
  background-color: #faf5ff;
  color: #a855f7;
}

.doc-info {
  flex-grow: 1;
}

.doc-title {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text-dark);
  margin-bottom: 0.25rem;
}

.doc-meta {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.doc-download-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: all var(--transition-fast);
}

.doc-card:hover .doc-download-btn {
  background-color: var(--color-primary);
  color: white;
}

/* Contacts grid styling */
.contact-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
}

.contact-avatar {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-full);
  margin: 0 auto 1.5rem auto;
  border: 4px solid var(--color-primary-light);
  overflow: hidden;
  background-color: var(--color-bg-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.contact-avatar svg {
  width: 50px;
  height: 50px;
}

.contact-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.contact-role {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.contact-details {
  list-style: none;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-details li {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
}

.contact-details svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

/* Quick Interactive Wizard for "Co mám dělat" */
.wizard-box {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 3rem;
}

.wizard-title {
  text-align: center;
  margin-bottom: 2rem;
}

.wizard-steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  position: relative;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.wizard-steps::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  width: 100%;
  height: 2px;
  background-color: var(--color-border);
  z-index: 1;
}

.wizard-step {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  z-index: 2;
  transition: all var(--transition-normal);
  color: var(--color-text-muted);
}

.wizard-step.active {
  border-color: var(--color-accent);
  background-color: var(--color-accent);
  color: white;
}

.wizard-step.completed {
  border-color: var(--color-success);
  background-color: var(--color-success);
  color: white;
}

.wizard-content-step {
  display: none;
  animation: fadeIn 0.4s ease;
}

.wizard-content-step.active {
  display: block;
}

.wizard-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.wizard-opt-card {
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.wizard-opt-card:hover {
  border-color: var(--color-accent);
  background-color: var(--color-primary-light);
}

.wizard-input-group {
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.wizard-input-group label {
  font-weight: 600;
  font-family: var(--font-headings);
}

.wizard-input-group input {
  padding: 0.85rem;
  font-size: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  width: 100%;
}

.wizard-input-group input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.wizard-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

.wizard-result-box {
  background-color: var(--color-success-bg);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-top: 1.5rem;
  color: #065f46;
}

/* Footer styling */
footer.site-footer {
  background-color: var(--color-primary-dark);
  color: white;
  padding: 4rem 0 2rem 0;
  border-top: 4px solid var(--color-accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h3 {
  color: white;
  margin-bottom: 1.25rem;
  font-size: 1.2rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-col h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: var(--color-accent);
}

.footer-col p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: white;
  padding-left: 0.25rem;
}

.footer-logo {
  max-width: 160px;
  height: auto;
  filter: brightness(0) invert(1); /* make logo white */
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

/* Utility Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

/* Responsiveness overrides */
@media (max-width: 980px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  
  nav.main-nav {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 280px;
    height: calc(100vh - var(--header-height));
    background-color: white;
    box-shadow: var(--shadow-lg);
    transition: left var(--transition-normal);
    padding: 2rem;
    border-right: 1px solid var(--color-border);
  }

  nav.main-nav.open {
    left: 0;
  }

  nav.main-nav ul {
    flex-direction: column;
    gap: 1rem;
  }

  nav.main-nav a {
    display: block;
    padding: 0.75rem 1rem;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero h1 {
    font-size: 2.25rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }

  .doc-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
  
  .doc-badge {
    align-self: flex-start;
  }

  .doc-download-btn {
    align-self: flex-end;
  }
}