/*───────────────────────────────[ Variables ]───────────────────────────────*/
:root {
  --bg-color-1: #000;
  --bg-color-2: hsl(240, 25%, 15%);
  --glow: rgba(255, 255, 255, 0.04);
  --glow-accent: 0 0 6px hsl(240,40%,80%);
  --panel-bg: linear-gradient(
    rgba(255, 255, 255, 0.03),
    rgba(255, 255, 255, 0.05)
  );
  --panel-border: rgba(255, 255, 255, 0.2);
  --text-color-1: #fff;
  --text-color-2: #ccc;
  --text-color-3: #777;
  --text-color-4: #000;
}

/*──────────────────────────────[ Reset & Base ]─────────────────────────────*/
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100dvh;
  overflow: hidden;
  padding-bottom: env(safe-area-inset-bottom);
  overscroll-behavior-y: none;
}

body {
  position: relative;
  overflow: hidden;
  font-family: 'Outfit', system-ui, sans-serif;
  color: var(--text-color-1);
  background: linear-gradient(135deg, var(--bg-color-1), var(--bg-color-2));
}

body::before,body::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  padding-bottom: env(safe-area-inset-bottom);
}
body::before {
  background:
  radial-gradient(circle at 30% 30%, var(--glow), transparent 50%),
  radial-gradient(circle at 70% 80%, var(--glow), transparent 60%);
}
body::after {
  background: url("overlay.png");
  opacity: 0.2;
}

/*─────────────────────────────────[ Layout ]────────────────────────────────*/
main {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  transform: translateY(-100vh);
  transition: transform 0.6s ease-out;
}
html:not([data-loading]) main {
  transform: translateY(0);
}

footer {
  position: fixed;
  bottom: 1rem;
  font-weight: 200;
  text-align: center;
  width: 100%;
  color: var(--text-color-2);
  opacity: 0;
  transition: opacity 0.4s ease-in-out 0.2s;
  z-index: 2;
}
html:not([data-loading]) footer {
  opacity: 1
}

/*───────────────────────────────[ Glass Panel ]─────────────────────────────*/
.glass-panel {
  display: flex;
  flex-direction: column;
  gap: clamp(1rem, 4vw, 2rem);
  width: 100%;
  max-width: 480px;
  padding: clamp(1.5rem, 6vw, 3rem);
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  text-align: center;
  box-shadow: 0 10px 40px rgba(0,0,0,0.4);
  transition: box-shadow 0.3s;
}

.glass-panel > * {
  opacity: 0;
  transition: opacity 0.4s ease-in-out 0.2s;
}
html:not([data-loading]) .glass-panel > * {
  opacity: 1;
}

h1 {
  font-size: clamp(2rem, 6vw, 2.75rem);
  font-weight: 400;
}

/* Body content */
p.description {
  font-size: clamp(1rem, 3vw, 1.1rem);
  color: var(--text-color-2);
  font-weight: 300;
}

.disclaimer {
  font-size: clamp(0.75rem, 2.5vw, 0.85rem);
  color: var(--text-color-3);
  font-weight: 200;
}

/*───────────────────────────────[ Form Elements ]───────────────────────────*/
form#waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

form#waitlist-form [disabled] {
  opacity: 0.5;
  cursor: initial;
}

input[type="email"],
button {
  font-size: clamp(0.9rem, 2.5vw, 1rem);
  font-family: 'Outfit', system-ui, sans-serif;
}

input[type="email"] {
  width: 100%;
  padding: clamp(0.5rem, 2vw, 0.75rem) clamp(1rem, 3vw, 1.25rem);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 20px;
  background: rgba(255,255,255,0.06);
  color: var(--text-color-1);
  outline: none;
  transition: box-shadow 0.15s ease-in-out;
}

input[type="email"]::placeholder {
  color: var(--text-color-3);
}

input[type="email"]:focus {
  box-shadow: var(--glow-accent);
}

button {
  padding: clamp(0.5rem, 2vw, 0.75rem) clamp(1rem, 4vw, 1.5rem);
  border: none;
  border-radius: 20px;
  background: white;
  color: var(--text-color-4);
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  display: flex;
  align-items: center;
}

button:hover {
  box-shadow: var(--glow-accent);
  transform: scale(1.03);
}

button>.spinner {
  background: url('spinner.svg');
  width: 1rem;
  height: 1rem;
  background-size: contain;
  display: inline-block;
  margin-left: 1rem;
}

/*─────────────────────────────────[ Canvas ]────────────────────────────────*/
#curve-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
}

/*──────────────────────────────────[ Toast ]────────────────────────────────*/
@keyframes grow-in {
  from { scale: 0.8; }
  to { scale: 1; }
}

.toast {
  position: fixed;
  left: 50%;
  top: 1em;
  translate: -50% 0;
  padding: 1em 1.5em;
  background: var(--text-color-1);
  color: var(--text-color-4);
  z-index: 5;
  text-align: center;
  border-radius: 0.5em;
  border-left: 0.5em solid;
  box-shadow: 0 10px 40px rgba(0,0,0,0.4);
  transition: translate 1s linear;
  animation: grow-in 0.06s ease-out;
}
.toast[data-expire] {
  translate: -50% -50vh;
}


/*─────────────────────────────[ Responsive Tweaks ]─────────────────────────*/
@media (max-width: 600px) {
  main {
    padding: 1rem;
  }
  html:not([data-loading]) main {
    margin-top: -4vh;
  }
}

@media (max-width: 360px) {
  h1 {
    font-size: 2rem;
  }
  input[type="email"],
  button {
    padding: 0.5rem 1rem;
  }
}