/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Base */
body {
  font-family: "Space Grotesk", sans-serif;
  color: rgb(212, 255, 0);
  background: #000;
  overflow-x: hidden;
}

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

a:hover {
  opacity: 0.8;
}

/* Backdrop slideshow */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
}

.backdrop-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.37);
  z-index: 1;
}

.backdrop-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1s ease;
}

.backdrop-img.active {
  opacity: 1;
}

/* Layout */
.container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 10rem;
  text-align: center;
  transition: transform 0.45s cubic-bezier(0.24, 1, 0.29, 1),
              opacity 0.35s ease;
}

/* Slide panel (contact form) */
.panel {
  position: fixed;
  inset: 0;
  z-index: 3;
  transform: translateX(100%);
  opacity: 0;
  pointer-events: none;
  overflow-y: auto;
}

.panel.slide-in {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

#home.slide-out {
  transform: translateX(-30%);
  opacity: 0;
  pointer-events: none;
}

/* Mail icon */
.mail-icon {
  display: inline-block;
  transition: opacity 0.2s;
  cursor: pointer;
}

.mail-icon:hover {
  opacity: 0.7;
}

/* Typography */
h1 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
}

small {
  font-size: 0.85rem;
  display: block;
}

.arrows {
  letter-spacing: 0.15em;
  font-size: 0.75rem;
  display: inline-block;
  margin-bottom: 0.3rem;
}

/* Contact form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
  max-width: 400px;
  margin-top: 2rem;
  text-align: left;
}

.contact-form label {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.6rem 0.8rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
  color: rgb(212, 255, 0);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(212, 255, 0, 0.3);
  border-radius: 4px;
  outline: none;
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgb(212, 255, 0);
}

.contact-form button {
  padding: 0.7rem 1.5rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: #000;
  background: rgb(212, 255, 0);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: opacity 0.2s;
  margin-top: 0.5rem;
}

.contact-form button:hover {
  opacity: 0.85;
}

.form-confirmation {
  display: none;
  font-size: 1.2rem;
  margin-top: 2rem;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.form-confirmation.visible {
  display: block;
  opacity: 1;
}

.back-link {
  display: inline-block;
  margin-top: 2rem;
  font-size: 0.9rem;
  opacity: 0.7;
}

.back-link:hover {
  opacity: 1;
}

/* Mobile */
@media (max-width: 768px) {
  .container {
    padding: 1.5rem;
  }

  h1 {
    font-size: 2rem;
  }

  small {
    font-size: 0.75rem;
  }
}