:root {
  --light-bg: #f8f9fa;
  --dark-bg: #1a1a1a;
  --text-color-light: #2c3e50;
  --text-color-dark: #ecf0f1;
  --highlight-color: #3498db;
  --button-bg-light: rgba(236, 240, 241, 0.1);
  --button-bg-dark: rgba(52, 152, 219, 0.1);
  --button-border-light: rgba(236, 240, 241, 0.3);
  --button-border-dark: rgba(52, 152, 219, 0.3);
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: var(--dark-bg);
  color: var(--text-color-dark);
  transition: all 0.5s ease;
  position: relative;
  overflow: hidden;
}

body.light-mode-active {
  background: var(--light-bg);
  color: var(--text-color-light);
}

body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    45deg,
    rgba(52, 152, 219, 0.05),
    rgba(52, 152, 219, 0)
  );
  z-index: -1;
}

.container {
  text-align: center;
  padding: 2rem;
  position: relative;
}

.title-container {
  position: relative;
  display: inline-block;
  margin-bottom: 2rem;
}

h1 {
  font-size: 3.5em;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.highlight {
  display: inline-block;
  background: linear-gradient(360deg, var(--highlight-color), #fecd0b);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: textFloat 3s ease-in-out infinite;
}

.highlight::before {
  content: attr(data-text);
  position: absolute;
  left: 0;
  top: 0;
  z-index: -1;
  background: linear-gradient(120deg, var(--highlight-color), #2980b9);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.3;
  filter: blur(8px);
  animation: textGlow 3s ease-in-out infinite;
}

@keyframes textFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

@keyframes textGlow {
  0%,
  100% {
    opacity: 0.3;
    filter: blur(8px);
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    filter: blur(16px);
    transform: scale(1.05);
  }
}

.dark-mode {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 12px 24px;
  background: var(--button-bg-dark);
  color: var(--text-color-dark);
  border: 1px solid var(--button-border-dark);
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
  backdrop-filter: blur(5px);
}

.dark-mode:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

body.light-mode-active .dark-mode {
  background: var(--button-bg-light);
  color: var(--text-color-light);
  border-color: var(--button-border-light);
}

.message {
  font-size: 1.5em;
  margin: 1.5rem 0;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.contact-link {
  color: var(--highlight-color);
  text-decoration: none;
  position: relative;
  transition: all 0.3s ease;
}

.contact-link::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 1px;
  bottom: -2px;
  left: 0;
  background: var(--highlight-color);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.contact-link:hover::after {
  transform: scaleX(1);
}

.separator {
  width: 60%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--text-color-dark),
    transparent
  );
  margin: 2rem auto;
  opacity: 0.2;
}

body.light-mode-active .separator {
  background: linear-gradient(
    90deg,
    transparent,
    var(--text-color-light),
    transparent
  );
}

.footer-container {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(5px);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  font-size: 0.85rem;
  color: var(--text-color-dark);
  transition: all 0.3s ease;
}

body.light-mode-active .footer-container {
  background: rgba(255, 255, 255, 0.1);
  border-top-color: rgba(255, 255, 255, 0.1);
  color: var(--text-color-light);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-link {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: var(--highlight-color);
}

.footer-separator {
  color: rgba(255, 255, 255, 0.3);
}

body.light-mode-active .footer-separator {
  color: rgba(0, 0, 0, 0.3);
}