@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap");

:root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --background-color: #ffffff;
  --text-color: #333333;
  --button-hover-color: #2980b9;
}

.dark {
  --primary-color: #3498db;
  --secondary-color: #34495e;
  --background-color: #1a1a1a;
  --text-color: #ffffff;
  --button-hover-color: #2980b9;
}

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

body {
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  background-color: var(--background-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

.container {
  width: 80%;
  max-width: 1200px;
  margin: auto;
  overflow: hidden;
  padding: 0 20px;
}

header {
  background: var(--secondary-color);
  color: #ffffff;
  padding: 1rem 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
}

header .highlight {
  color: var(--primary-color);
  font-weight: bold;
}

#mode-toggle {
  background: none;
  border: none;
  color: #ffffff;
  cursor: pointer;
  font-size: 1.5rem;
}

#mode-toggle svg {
  width: 24px;
  height: 24px;
}

#showcase {
  background-image: url("https://source.unsplash.com/random/1920x1080/?abstract");
  background-size: cover;
  background-position: center;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 20px;
}

#showcase h1 {
  font-size: 4rem;
  margin-bottom: 0.5rem;
  color: #ffffff;
}

#showcase p {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  color: #ffffff;
}

button {
  display: inline-block;
  padding: 0.8rem 2rem;
  background: var(--primary-color);
  color: #ffffff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.3s;
}

button:hover {
  background: var(--button-hover-color);
}

#contact {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1001;
}

#contact .container {
  background: var(--background-color);
  padding: 2rem;
  border-radius: 10px;
  max-width: 500px;
  width: 90%;
}

#contact h2 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 5px;
  background-color: var(--background-color);
  color: var(--text-color);
}

.form-group textarea {
  height: 150px;
}

#form-result {
  margin-top: 1rem;
  padding: 0.5rem;
  border-radius: 5px;
  text-align: center;
}

#back-btn {
  display: block;
  width: 100%;
  margin-top: 1rem;
  background-color: #95a5a6;
}

#back-btn:hover {
  background-color: #7f8c8d;
}

.hidden {
  display: none;
}

@media (max-width: 768px) {
  #showcase h1 {
    font-size: 3rem;
  }

  #showcase p {
    font-size: 1.2rem;
  }

  .container {
    width: 90%;
  }
}