* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background: #0d0d0d;
}

.panel {
  display: flex;
  min-height: 100vh;
  overflow: hidden;
}

/* LEFT PANEL */

.left-panel {
  width: 35%;
  background: #1a1a1a;
  color: white;
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid #00d4ff;
  box-shadow: 2px 0 15px rgba(0, 212, 255, 0.5);
}

.header {
  margin-bottom: 20px;
}

.title-with-logo {
  display: flex;
  align-items: center;
  gap: 15px;
}

.title-with-logo img {
  width: 50px;
  height: 50px;
  object-fit: contain;
  filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.6));
}

.left-panel h1 {
  font-size: 16px;
  opacity: 0.7;
  margin-bottom: 5px;
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.left-panel h2 {
  font-size: 42px;
  font-weight: bold;
  margin: 0;
  background: linear-gradient(135deg, #00d4ff, #0099ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 15px rgba(0, 212, 255, 0.6));
}

.left-panel h3 {
  color: #00d4ff;
  margin-top: 5px;
  font-size: 16px;
  font-weight: normal;
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.promo {
  flex: 0;
  display: flex;
  align-items: center;
  margin: 30px 0;
}

.promo p {
  font-size: 19px;
  line-height: 1.8;
  color: #ffffff;
  text-align: justify;
  font-weight: 500;
  text-shadow: 0 0 8px rgba(0, 212, 255, 0.4);
}

.catalog-btn {
  background: transparent;
  padding: 20px 40px;
  text-align: center;
  border-radius: 8px;
  transition: 0.3s;
  border: 2px solid #00d4ff;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.6), inset 0 0 20px rgba(0, 212, 255, 0.1);
  cursor: pointer;
  text-decoration: none;
  display: block;
}

.catalog-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.8), inset 0 0 30px rgba(0, 212, 255, 0.2);
}

.catalog-btn h4 {
  font-size: 24px;
  color: #ffffff;
  text-shadow: 0 0 15px rgba(255, 255, 255, 0.8);
  letter-spacing: 3px;
  margin: 0;
}

/* RIGHT PANEL */

.right-panel {
  width: 65%;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0d0d0d 0%, #1a1a1a 50%, #0d0d0d 100%);
}

#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 1;
}

.main-title {
  position: relative;
  z-index: 2;
  font-size: 80px;
  color: #ffffff;
  font-weight: 700;
  text-align: center;
  font-family: sans-serif;
  text-shadow: 0 0 30px rgba(255, 255, 255, 1),
               0 0 60px rgba(255, 255, 255, 0.8),
               0 0 90px rgba(255, 255, 255, 0.6);
}

/* ===== FONDO AZUL ===== */

.background{
  position:fixed;
  inset:0;
  z-index:-2;

  background:
    radial-gradient(circle at 20% 30%, #06343a 0%, transparent 45%),
    radial-gradient(circle at 80% 70%, #0b5960 0%, transparent 50%),
    radial-gradient(circle at 60% 20%, #04282d 0%, transparent 60%),
    #021417;
}

/* efecto liquido */
.background::before,
.background::after{
  content:"";
  position:absolute;
  width:160%;
  height:160%;
  top:-30%;
  left:-30%;
  filter:blur(90px);
}

.background::before{
  background:
    radial-gradient(circle,#0b6a73 10%,transparent 60%),
    radial-gradient(circle,#084f56 20%,transparent 65%),
    radial-gradient(circle,#0a7f88 15%,transparent 60%);
  animation: liquid1 20s linear infinite;
}

.background::after{
  background:
    radial-gradient(circle,#063f46 20%,transparent 60%),
    radial-gradient(circle,#0c5f66 15%,transparent 65%);
  animation: liquid2 28s linear infinite;
}

/* PARTICLES */
#particles-js{
  position:absolute;
  width:100%;
  height:100%;
  top:0;
  left:0;
  z-index:1;
}

/* animaciones */
@keyframes liquid1{
  0%{transform:translate(0,0) rotate(0)}
  50%{transform:translate(6%,8%) rotate(180deg)}
  100%{transform:translate(0,0) rotate(360deg)}
}

@keyframes liquid2{
  0%{transform:translate(0,0) scale(1)}
  50%{transform:translate(-5%,5%) scale(1.1)}
  100%{transform:translate(0,0) scale(1)}
}

/* RESPONSIVE */

/* Tablets */
@media (max-width: 1024px) {
  .left-panel {
    width: 40%;
    padding: 25px;
  }

  .right-panel {
    width: 60%;
  }

  .left-panel h2 {
    font-size: 32px;
  }

  .promo p {
    font-size: 16px;
    line-height: 1.6;
  }

  .catalog-btn h4 {
    font-size: 18px;
  }

  .main-title {
    font-size: 56px;
  }
}

/* Móviles */
@media (max-width: 768px) {
  .panel {
    flex-direction: column;
  }

  .left-panel, .right-panel {
    width: 100%;
  }

  .left-panel {
    padding: 25px 20px;
    min-height: auto;
    justify-content: flex-start;
    gap: 20px;
  }

  .right-panel {
    min-height: 45vh;
  }

  .header {
    margin-bottom: 15px;
  }

  .left-panel h1 {
    font-size: 13px;
  }

  .left-panel h2 {
    font-size: 28px;
  }

  .left-panel h3 {
    font-size: 13px;
  }

  .title-with-logo img {
    width: 35px;
    height: 35px;
  }

  .promo {
    margin: 15px 0;
  }

  .promo p {
    font-size: 14px;
    line-height: 1.5;
  }

  .catalog-btn {
    padding: 12px 25px;
  }

  .catalog-btn h4 {
    font-size: 16px;
    letter-spacing: 1px;
  }

  .main-title {
    font-size: 40px;
  }
}

@media (max-width: 480px) {
  .left-panel {
    padding: 20px 15px;
    gap: 15px;
  }

  .left-panel h2 {
    font-size: 24px;
  }

  .promo p {
    font-size: 13px;
    line-height: 1.4;
  }

  .catalog-btn {
    padding: 10px 20px;
  }

  .catalog-btn h4 {
    font-size: 14px;
  }

  .main-title {
    font-size: 32px;
  }
}