:root {
   color-scheme: light dark;
   --bg: #ffffff;
   --fg: #000000;
   --muted: #888;
   --card: #f5f5f5;
   --border: #000;
}

@media (prefers-color-scheme: dark) {
   :root {
      --bg: #000000;
      --fg: #ffffff;
      --muted: #aaa;
      --card: #111;
      --border: #fff;
   }
}

* {
   box-sizing: border-box;
}
html,
body {
   height: 100%;
}
body {
   margin: 0;
   padding: 0;
   background: var(--bg);
   color: var(--fg);
   font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

a {
   color: inherit;
   text-decoration: underline;
}
button,
input {
   font: inherit;
}
button {
   background: var(--fg);
   color: var(--bg);
   border: 2px solid var(--border);
   padding: 0.6rem 1rem;
   cursor: pointer;
}
button:hover {
   filter: invert(100%);
}
label {
   display: block;
   margin-bottom: 0.75rem;
}
input {
   width: 100%;
   padding: 0.6rem 0.8rem;
   border: 2px solid var(--border);
   background: transparent;
   color: inherit;
}

.card {
   max-width: 480px;
   margin: 6vh auto;
   background: var(--card);
   border: 2px solid var(--border);
   padding: 1.25rem 1.5rem;
   border-radius: 16px;
   box-shadow: 0 8px 0 0 var(--border);
}

h1,
h2 {
   margin-top: 0;
}

.error {
   color: var(--fg);
   border-left: 4px solid var(--fg);
   padding-left: 0.5rem;
   margin-top: 0.5rem;
}
.toast {
   position: fixed;
   left: 50%;
   transform: translateX(-50%);
   bottom: 1rem;
   background: var(--fg);
   color: var(--bg);
   padding: 0.5rem 0.75rem;
   border: 2px solid var(--border);
   opacity: 0;
   transition: opacity 0.2s ease;
}
.toast.show {
   opacity: 1;
}

.install-banner {
   position: fixed;
   right: 1rem;
   bottom: 1rem;
   background: var(--bg);
   color: var(--fg);
   border: 2px dashed var(--border);
   padding: 0.5rem 0.75rem;
}

.profile-pic {
   width: 96px;
   height: 96px;
   border-radius: 50%;
   border: 2px solid var(--border);
   object-fit: cover;
}

.modal {
   position: fixed;
   inset: 0;
   background: rgba(0, 0, 0, 0.6);
   display: grid;
   place-items: center;
}
.modal.hidden {
   display: none;
}
.modal form {
   background: var(--bg);
   color: var(--fg);
   border: 2px solid var(--border);
   padding: 1rem;
   width: min(420px, 92vw);
   border-radius: 12px;
}
html.show-focus :focus {
   outline: 3px dashed var(--fg);
   outline-offset: 2px;
}