/* ===========================
   HK Konferencia 2026 – Clean Redesign
   =========================== */

:root {
  --color-primary: #A78C7B;
  --color-primary-dark: #8a7062;
  --color-primary-light: #c4ad9f;
  --color-dark: #2c2c2c;
  --color-text: #444;
  --color-text-light: #666;
  --color-bg-white: #ffffff;
  --color-bg-light: #f7f5f3;
  --color-border: #e8e4e0;
  --nav-height: 80px;
  --container-width: 1140px;
  --radius: 12px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: 'Poppins', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* Safety: never let nav images blow up */
nav img { max-width: 24px; max-height: 24px; }

/* Container */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.text-center { text-align: center; }
.muted { color: var(--color-text-light); font-size: 0.9rem; }

/* ===========================
   Navigation
   =========================== */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
  transition: var(--transition);
}

.nav-scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--color-dark);
  flex-shrink: 0;
}

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

.nav-contact-bar {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-contact-bar li a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-light);
  transition: color var(--transition);
  white-space: nowrap;
}

.nav-contact-bar li a:hover { color: var(--color-primary); }

.nav-contact-bar svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.nav-contact-bar span {
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links li a {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  padding: 8px 12px;
  border-radius: 6px;
  transition: var(--transition);
}

.nav-links li a:hover {
  color: var(--color-primary);
  background: rgba(167,140,123,0.08);
}

.nav-cta {
  background: var(--color-primary) !important;
  color: #fff !important;
  padding: 10px 20px !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
  white-space: nowrap;
  transition: background var(--transition) !important;
}

.nav-cta:hover {
  background: var(--color-primary-dark) !important;
}

/* Burger */
.burger {
  display: none;
  cursor: pointer;
  z-index: 10;
}

.burger div {
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  margin: 5px 0;
  transition: all 0.3s ease;
  border-radius: 2px;
}

.toggle .line1 { transform: rotate(-45deg) translate(-5px, 6px); }
.toggle .line2 { opacity: 0; }
.toggle .line3 { transform: rotate(45deg) translate(-5px, -6px); }

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 28px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: 0.3px;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(167,140,123,0.4);
}

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

.btn-white:hover {
  background: #f5f5f5;
  transform: translateY(-1px);
}

.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-block { width: 100%; }

/* ===========================
   Hero
   =========================== */
.hero {
  position: relative;
  aspect-ratio: 1536 / 1024;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  padding: 0 24px;
  max-width: 720px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}

.hero-date {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0.9;
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 16px;
  color: #fff;
}

.hero-subtitle {
  font-size: clamp(18px, 3vw, 24px);
  font-weight: 300;
  font-style: italic;
  opacity: 0.9;
  margin-bottom: 8px;
}

.hero-location {
  font-size: 15px;
  opacity: 0.85;
  margin-bottom: 32px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-color: #f3e3dc;
  background-image: url('../images/housekeeping4.png');
  background-size: 100% 100%;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(30,25,20,0.45) 0%,
    rgba(30,25,20,0.7) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  padding: 0 24px;
  max-width: 720px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}

.hero-date {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0.9;
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 16px;
  color: #fff;
}

.hero-subtitle {
  font-size: clamp(18px, 3vw, 24px);
  font-weight: 300;
  font-style: italic;
  opacity: 0.9;
  margin-bottom: 8px;
}

.hero-location {
  font-size: 15px;
  opacity: 0.85;
  margin-bottom: 32px;
}


/* ===========================
   Sections
   =========================== */
.section {
  padding: 80px 0;
}

.section-white { background: var(--color-bg-white); }
.section-light { background: var(--color-bg-light); }

.section-accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
}

.section-heading {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  text-align: center;
  color: var(--color-dark);
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-heading-light { color: #fff; }

.section-sub {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 40px;
  color: var(--color-text-light);
  font-size: 15px;
  line-height: 1.7;
}

.section-sub-light {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 40px;
  color: rgba(255,255,255,0.85);
  font-size: 15px;
}

.separator {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: 40px 0;
}

.separator-dark {
  background: var(--color-border);
}

/* ===========================
   Event Grid
   =========================== */
.event-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.event-item {
  text-align: center;
  padding: 32px 20px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.event-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.event-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.event-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.event-item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===========================
   Registration Form
   =========================== */
.reg-form-wrapper {
  max-width: 640px;
  margin: 0 auto;
  background: var(--color-bg-white);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: 'Poppins', sans-serif;
  font-size: 15px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #fff;
  color: var(--color-dark);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(167,140,123,0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #aaa;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: #fff;
  background: rgba(255,255,255,0.18);
}

.form-group textarea { resize: vertical; }

/* ===========================
   Exhibitors
   =========================== */
.exhibitor-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.exhibitor-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.exhibitor-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.exhibitor-header {
  margin-bottom: 12px;
}

.exhibitor-header h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.exhibitor-tag {
  display: inline-block;
  background: rgba(167,140,123,0.12);
  color: var(--color-primary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 0.3px;
}

.exhibitor-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 16px;
}

.exhibitor-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition);
}

.exhibitor-link:hover { color: var(--color-primary-dark); }

.exhibitor-more {
  text-align: center;
  padding: 24px;
  background: var(--color-bg-white);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
}

.exhibitor-more p {
  font-size: 14px;
  line-height: 1.7;
}

/* ===========================
   Google Form Embed
   =========================== */
.gform-embed {
  max-width: 980px;
  margin: 0 auto;
}

.gform-embed iframe {
  width: 100%;
  border: 0;
  height: 920px;
  border-radius: var(--radius);
}

.form-note {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 16px;
}

/* ===========================
   Organizers
   =========================== */
.organizer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.organizer-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}

.organizer-card:hover {
  box-shadow: var(--shadow-md);
}

.organizer-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.organizer-year {
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  padding: 16px 0 8px;
  color: var(--color-dark);
}

.organizer-cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  padding: 12px 16px 20px;
}

.organizer-col {
  background: var(--color-bg-light);
  border-radius: 8px;
  padding: 12px;
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
  color: var(--color-text);
}

/* ===========================
   Gallery Carousel
   =========================== */
.image-carousel {
  margin: 0 auto;
  width: 100%;
  max-height: 320px;
  overflow: hidden;
}

.image-carousel.slick-initialized {
  max-height: none;
  overflow: visible;
}

.image-carousel > div {
  padding: 8px;
}

.image-carousel img {
  width: 100%;
  display: block;
  object-fit: cover;
  border-radius: 8px;
  height: 280px;
}

.slick-prev:before,
.slick-next:before {
  color: var(--color-primary) !important;
  font-size: 24px !important;
}

.slick-dots li button:before {
  color: var(--color-primary) !important;
}

/* ===========================
   Beszámoló
   =========================== */
.beszamolo-intro p {
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 1rem;
}

.beszamolo-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-dark);
  margin: 2rem 0 0.75rem;
}

.beszamolo-body p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

.beszamolo-body ul {
  margin: 0.5rem 0 1.5rem 1.5rem;
  list-style: disc;
}

.beszamolo-body li {
  margin-bottom: 0.4rem;
  font-size: 15px;
}

/* ===========================
   Map
   =========================== */
.map-section {
  height: 50vh;
  min-height: 360px;
}

.map-wrapper {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.map-wrapper iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ===========================
   Footer
   =========================== */
footer {
  background: #f7f5f3;
  color: var(--color-text);
  padding: 60px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 16px;
}

.footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.footer-col li { font-size: 14px; color: var(--color-text-light); }
.footer-col a { color: var(--color-text-light); transition: color var(--transition); }
.footer-col a:hover { color: var(--color-primary); }

.footer-sponsors-title {
  text-align: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 24px;
}

.logos-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 24px;
  margin-bottom: 40px;
}

.supporter-logo {
  height: 48px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  transition: transform var(--transition);
}

.supporter-logo:hover { transform: scale(1.08); }

.footer-bottom-bar {
  border-top: 1px solid var(--color-border);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom-bar p {
  font-size: 13px;
  color: var(--color-text-light);
}

/* ===========================
   Floating CTA (mobile only)
   =========================== */
.floating-cta {
  display: none;
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 14px;
  padding: 14px 32px;
  border-radius: 50px;
  box-shadow: 0 4px 20px rgba(167,140,123,0.5);
  z-index: 900;
  transition: var(--transition);
}

.floating-cta:hover {
  background: var(--color-primary-dark);
  transform: translateX(-50%) translateY(-2px);
}

/* ===========================
   Fade-in animation
   =========================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes navLinkFade {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ===========================
   Responsive
   =========================== */
@media screen and (max-width: 1024px) {
  .event-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-contact-bar span { display: none; }
}

@media screen and (max-width: 900px) {
  .gform-embed iframe { height: 1120px; }

  .organizer-grid { grid-template-columns: 1fr; }

  .footer-top {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 24px;
  }

  .footer-col ul { align-items: center; }
}

@media screen and (max-width: 768px) {
  :root { --nav-height: 70px; }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transform: translateX(100%);
    transition: transform 0.4s ease;
    z-index: 999;
  }

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

  .nav-links li {
    opacity: 0;
  }

  .nav-links li a {
    font-size: 18px;
    padding: 12px 24px;
  }

  .nav-cta {
    margin-top: 12px;
    font-size: 16px !important;
    padding: 14px 32px !important;
  }

  .burger { display: block; }

  .nav-contact-bar { display: none; }

  .event-grid { grid-template-columns: 1fr; gap: 16px; }

  .exhibitor-grid { grid-template-columns: 1fr; }

  .form-row { grid-template-columns: 1fr; gap: 0; }

  .reg-form-wrapper { padding: 24px 20px; }

  .organizer-cols { grid-template-columns: 1fr; }

  .image-carousel img { height: 220px; }

  .floating-cta { display: flex; }

  .section { padding: 60px 0; }

  .gform-embed iframe { height: 1320px; }
}

@media screen and (max-width: 480px) {
  .section-heading { font-size: 22px; }
  .image-carousel img { height: 180px; }
}