/* Base & Global Styles (Mirrors style.css) */
@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400..800;1,400..800&display=swap');

:root {
    --font-size-base: 12px;
    --line-height-base: 1.6;
    --line-height-heading: 1.15;
    --letter-spacing-heading: -0.022em;
    --letter-spacing-base: 0.1em;
    --letter-spacing-capitals: 0.4em;
    --font-size-h1: 2.027rem;
    --font-size-h2: 1.802rem;
    --font-size-small: 0.889rem;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
}

html {
    font-family: 'EB Garamond', serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
    line-height: var(--line-height-base);
    font-size: var(--font-size-base);
    letter-spacing: var(--letter-spacing-base);
    color: black;
    margin: 0;
    padding: 0;
}

body {
    margin: 0;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

h1 {
    font-size: var(--font-size-h1);
    font-weight: 700;
    line-height: var(--line-height-heading);
    letter-spacing: var(--letter-spacing-capitals);
    text-transform: uppercase;
    margin: 0 0 var(--spacing-md) 0;
}

form {
    text-align: center;
    max-width: 100%;
}

/* Passphrase Input Fields */
.passphrase-container {
    display: flex;
    gap: 1rem; /* Gap between groups */
    justify-content: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.passphrase-group {
    display: flex;
    gap: 4px; /* Default gap for individual digits on mobile */
}

.passphrase-digit {
    width: 1.2em;
    height: 1.5em;
    font-family: 'EB Garamond', serif;
    font-size: var(--font-size-h2);
    text-align: center;
    border: none;
    border-bottom: 1px solid black;
    background: transparent;
    text-transform: uppercase;
    outline: none;
    padding: 0;
    border-radius: 0;
}

.passphrase-digit:focus {
    border-bottom-width: 2px;
}

/* Form Actions */
button {
    font-family: 'EB Garamond', serif;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-capitals);
    border: 1px solid black;
    background-color: white;
    color: black;
    margin: 0;
    padding: var(--spacing-xs) var(--spacing-sm);
    outline: none;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}

button:hover {
    background-color: black;
    color: white;
}

.error-message {
    color: red;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-small);
}

/* Responsive Adjustments */
@media (min-width: 768px) {
    .passphrase-container {
        gap: 2rem; /* Larger gap between groups for desktop */
    }

    .passphrase-group {
        gap: 8px; /* Larger gap between individual digits for desktop */
    }
}