/* Reset / osnovno */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  text-align: center;
}

body, html {
  width: 100%;
  height: 100%;
  font-family: Arial, sans-serif;
  overflow-x: hidden;
}

/* POČETNI EKRAN */
#start-screen {
  background: black;
  width: 100vw;
  height: 100vh;
  position: fixed;
  top: 0; left: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 999;
  color: white;
}

#rope {
  width: 10px;
  height: 150px;
  background: repeating-linear-gradient(
    45deg,
    #d1c7a1 0px,
    #d1c7a1 4px,
    #b9ad87 4px,
    #b9ad87 8px
  );
  border-radius: 10px;
  animation: sway 2s infinite ease-in-out;
  transform-origin: top;
  touch-action: none;
}

@keyframes sway {
  0% { transform: rotate(4deg); }
  50% { transform: rotate(-4deg); }
  100% { transform: rotate(4deg); }
}

.pull-text {
  margin-top: 14px;
  font-size: 20px;
  user-select: none;
}

/* GLAVNI SADRŽAJ + POZADINA */
#main-content {
  display: none;
  width: 100vw;
  min-height: 100vh;
  padding-top: 5vh;
  text-align: center;
  position: relative;
  color: #fff;
  background: url('https://images.unsplash.com/photo-1513721032312-6a50a3f4e52d?auto=format&fit=crop&w=1080&q=80') center/cover no-repeat;
}

/* Tamni overlay preko pozadine da tekst i envelope vide se lepo */
#main-content::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 1;
}

#main-content > * {
  position: relative;
  z-index: 2;
}

/* Naslov */
#main-content h1 {
  margin-top: 2vh;
  font-size: 6vw;
}

/* ENVELOPE + PISMO */
.envelope {
  width: 75vw;
  max-width: 320px;
  margin: 40px auto;
  perspective: 800px;
  cursor: pointer;
}

.envelope .body {
  width: 100%;
  background: #f8f3e6;
  border: 2px solid #c0b8a0;
  border-radius: 0 0 6px 6px;
  position: relative;
  overflow: hidden;
  padding: 16px;
}

.envelope .flap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background: #e3c29d;
  border: 2px solid #c0b8a0;
  border-bottom: none;
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
  transform-origin: top;
  transition: transform 0.6s ease;
}

.envelope .letter {
  background: white;
  color: #333;
  width: 100%;
  padding: 12px;
  border-radius: 4px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  word-wrap: break-word;
  font-size: 4vw;
  line-height: 1.4;
}

.envelope.open .flap {
  transform: rotateX(-180deg);
}

.envelope.open .letter {
  opacity: 1;
  transform: translateY(0);
}
/* GLAVNI SADRŽAJ + POZADINA */
#main-content {
  display: none;
  width: 100vw;
  min-height: 100vh;
  padding-top: 5vh;
  text-align: center;
  position: relative;
  color: #fff;
  /* Fallback boja + siguran direktan link */
  background-color: #ffccd5;
  background-image: url('https://previews.123rf.com/images/gitusik/gitusik1901/gitusik190100867/115494100-abstract-watercolor-red-pink-heart-background-concept-love-valentine-day-greeting-card.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* Tamni overlay preko pozadine da tekst i envelope vide se lepo */
#main-content::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.3); /* smanjio opacity sa 0.5 na 0.3 da slika bolje vidi */
  z-index: 1;
}