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

body {
  font-family: Arial, sans-serif;
  color: #111;
  background-color: #ffffff;
}

a { color: inherit; text-decoration: none; }

/* ===== HORNÍ POLoprůhledný STICKY STRIP ===== */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(60, 60, 60, 0.75);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  z-index: 1000;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 16px;
  color: #ffffff;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.top-bar-logo {
  height: 36px;
  width: auto;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 13px;
  color: #ffffff;
}

.top-bar-right a { opacity: 0.9; }
.top-bar-right a:hover { opacity: 1; }

.btn-register {
  padding: 6px 18px;
  border-radius: 16px;
  background: #27a6ff;
  color: #ffffff;
  font-weight: bold;
}

/* ===== HERO: ČB BACKGROUND + BAREVNÝ PRUH ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  overflow: hidden;
  margin-top: 60px; /* aby hero nezačínal pod sticky lištou */
}

/* společná základna pro obě vrstvy */
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../img/bg/5.jpg'); /* tvůj hero obrázek */
  background-size: cover;
  background-position: center;
}

/* spodní vrstva – celá fotka černobílá */
.hero-bg.bw {
  filter: grayscale(1);
}

/* horní vrstva – barevná pouze v šikmém pruhu */
.hero-bg.color-stripe {
  filter: none;
  clip-path: polygon(
    25% 0%,
    55% 0%,
    45% 100%,
    15% 100%
  );
  /* úhly a šířku pruhu si můžeš doladit změnou těchto bodů */
}

/* text na fotce */
.hero-inner {
  position: relative;
  z-index: 10;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 120px 7% 90px;
  color: #ffffff;
}

.hero-line-top {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 18px;
}

.hero-title {
  font-size: 28px;
  line-height: 1.4;
  max-width: 520px;
  font-weight: 600;
  margin-bottom: 40px;
}

.hero-info {
  font-size: 15px;
  line-height: 1.7;
  max-width: 520px;
}

.hero-date {
  margin-top: 14px;
  font-weight: 600;
}

/* ===== PODKLAD POD HERO (ABOUT + TOPICS) ===== */
.content {
  background: #eef3ff;
  padding: 60px 7% 60px;
}

.content-row {
  display: flex;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto 40px;
  align-items: flex-start;
}

.content-col { flex: 1; }

.content-title {
  font-size: 26px;
  margin-bottom: 22px;
  font-weight: 600;
  color: #182039;
}

.content-text {
  font-size: 14px;
  line-height: 1.7;
  color: #333;
}

.content-list {
  font-size: 14px;
  line-height: 1.7;
  color: #333;
  padding-left: 18px;
}

/* ===== OBRÁZKOVÝ STRIP POD TEXTEM ===== */
.photo-strip {
  max-width: 1200px;
  margin: 0 auto 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.photo-strip img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

/* ===== ORGANIZER + CONTACT BLOK ===== */
.info-bottom {
  background: #ffffff;
  padding: 30px 7% 40px;
}

.info-row {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 60px;
  font-size: 13px;
  color: #333;
}

.info-col { flex: 1; }

.info-title {
  font-weight: 600;
  margin-bottom: 8px;
}

/* ===== PATIČKA – POUZE COPYRIGHT ===== */
.footer {
  background: #111111;
  color: #aaaaaa;
  padding: 14px 7%;
  font-size: 12px;
}

.footer-bottom {
  text-align: center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
  .top-bar { padding: 0 16px; }
  .top-bar-right { gap: 14px; font-size: 12px; }
  .hero-inner { padding: 120px 24px 60px; }
  .hero-title { font-size: 22px; max-width: 420px; }
  .content-row { flex-direction: column; }
  .photo-strip { grid-template-columns: 1fr; }
  .info-row { flex-direction: column; }
}

@media (max-width: 600px) {
  .top-bar { height: 54px; padding: 0 10px; }
  .top-bar-left { font-size: 11px; gap: 8px; }
  .top-bar-logo { height: 28px; }
  .top-bar-right { display: none; }
}