/* Bisotun design tokens. 'Bisotun Sans' is the project's OFL font (see NOTICE). */
@font-face { font-family: 'Bisotun Sans'; font-weight: 400; font-display: swap; src: url('fonts/bisotun-sans-400.woff2') format('woff2'); }
@font-face { font-family: 'Bisotun Sans'; font-weight: 500; font-display: swap; src: url('fonts/bisotun-sans-500.woff2') format('woff2'); }
@font-face { font-family: 'Bisotun Sans'; font-weight: 600; font-display: swap; src: url('fonts/bisotun-sans-600.woff2') format('woff2'); }
@font-face { font-family: 'Bisotun Sans'; font-weight: 700; font-display: swap; src: url('fonts/bisotun-sans-700.woff2') format('woff2'); }

:root {
  --primary: #0F5C63;
  --on-primary: #FFFFFF;
  --secondary: #C8A46A;
  --accent: #238C84;
  --ink: #14212B;
  --ink-muted: #4A5A66;
  --surface: #F6F4EF;
  --surface-alt: #ECE7DC;
  --card: #FFFFFF;
  --border: #D9D2C3;
  --link: #0F5C63;
  --error: #B3261E;
  --warning: #935700;
  --success: #1B703F;
  --radius: 12px;
  --card-radius: 16px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #4FB3AA;
    --on-primary: #062A2D;
    --secondary: #D9BC8A;
    --accent: #5CC6BC;
    --ink: #E8ECEF;
    --ink-muted: #A9B6BF;
    --surface: #10181E;
    --surface-alt: #18232B;
    --card: #1C2830;
    --border: #2C3A44;
    --link: #7FD1C8;
    --error: #F2B8B5;
    --warning: #FFB960;
    --success: #7DD99B;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: 'Bisotun Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

a { color: var(--link); }

form#email-form {
  display: flex;
  flex-direction: column;
  min-block-size: 100vh;
  max-inline-size: 40rem;
  margin-inline: auto;
  background: var(--card);
  border-inline: 1px solid var(--border);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-block: 0.75rem;
  padding-inline: 1.25rem;
  background: var(--card);
  color: var(--ink);
  border-block-end: 3px solid var(--secondary);
}

.brand { display: block; line-height: 0; }
.brand img { display: block; height: 36px; width: auto; }

.langs { display: flex; gap: 0.75rem; }
.langs a { color: var(--link); text-decoration: none; opacity: 0.85; }
.langs a[aria-current="page"] { opacity: 1; font-weight: 600; text-decoration: underline; }

main {
  flex: 1;
  padding-block: 1.5rem;
  padding-inline: 1.25rem;
}

h1 { font-size: 1.5rem; font-weight: 700; margin-block: 0 1rem; }

label, .label { display: block; font-weight: 600; margin-block: 1.25rem 0.5rem; }

input[type=email] {
  inline-size: 100%;
  padding-block: 0.75rem;
  padding-inline: 1rem;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: start;
}
input[type=email]:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.input-confirm {
  padding-block: 0.75rem;
  padding-inline: 1rem;
  background: var(--surface-alt);
  border-radius: var(--radius);
  overflow-wrap: anywhere;
}

ol { padding-inline-start: 1.5rem; }

.alert {
  margin-block-end: 1rem;
  padding-block: 0.75rem;
  padding-inline: 1rem;
  border-radius: var(--radius);
  border-inline-start: 4px solid var(--accent);
  background: var(--surface-alt);
  overflow-wrap: anywhere;
}
.alert-success { border-inline-start-color: var(--success); }
.alert-info { border-inline-start-color: var(--accent); }
.alert-warning { border-inline-start-color: var(--warning); }
.alert-danger { border-inline-start-color: var(--error); color: var(--error); }

footer {
  padding-block: 1rem;
  padding-inline: 1.25rem;
  border-block-start: 1px solid var(--border);
}

.actions { display: flex; justify-content: space-between; gap: 1rem; }

button {
  font: inherit;
  font-weight: 600;
  padding-block: 0.7rem;
  padding-inline: 1.5rem;
  border-radius: var(--radius);
  cursor: pointer;
}
.button-primary {
  margin-inline-start: auto;
  background: var(--primary);
  color: var(--on-primary);
  border: 1px solid var(--primary);
}
.button-secondary {
  background: transparent;
  color: var(--link);
  border: 1px solid var(--border);
}
button:disabled { opacity: 0.6; cursor: default; }

.hidden { display: none !important; }

@media (max-width: 40rem) {
  form#email-form { border-inline: 0; }
}