:root {
    color-scheme: light dark;
    font-family: Arial, Helvetica, sans-serif;
    --background: #101820;
    --panel: rgba(255, 255, 255, 0.08);
    --border: rgba(255, 255, 255, 0.2);
    --text: #ffffff;
    --muted: rgba(255, 255, 255, 0.72);
    --accent: #f4c542;
    --accent-text: #101820;
    --danger: #ff6b6b;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--background);
    color: var(--text);
}

.auth-card {
    width: min(92vw, 560px);
    margin: 8vh auto;
    padding: 32px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
}

h1 {
    margin: 0 0 12px;
    font-size: clamp(2rem, 6vw, 3.25rem);
    line-height: 1.05;
}

p {
    margin: 0 0 22px;
    color: var(--muted);
    line-height: 1.55;
}

.error {
    padding: 12px;
    border-radius: 6px;
    background: rgba(255, 107, 107, 0.15);
    color: var(--danger);
}

form {
    display: grid;
    gap: 16px;
}

label {
    display: grid;
    gap: 8px;
    font-weight: 700;
}

input {
    width: 100%;
    min-height: 44px;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0 12px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    font: inherit;
}

button,
.button-link,
a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border-radius: 6px;
    padding: 0 18px;
    font: inherit;
    font-weight: 700;
    text-decoration: none;
}

button,
.button-link {
    border: 0;
    background: var(--accent);
    color: var(--accent-text);
    cursor: pointer;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}

a {
    border: 1px solid var(--border);
    color: var(--text);
}