*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #000000;
    --surface: #161616;
    --border: #2a2a2a;
    --text: #ffffff;
    --muted: #ffffff;
    --accent: #4a29c2;
    --danger: #ff4f4f;
    font-size: 140%;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'IBM Plex Mono', monospace;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    width: 100%;
    max-width: 560px;
    padding: 2rem;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent);
}

h1 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    color: var(--text);
}

.subtitle {
    font-size: 0.65rem;
    color: var(--muted);
    margin-bottom: 2rem;
    letter-spacing: 0.04em;
}

label {
    display: block;
    font-size: 0.65rem;
    color: var(--muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.field {
    margin-bottom: 1.25rem;
}

.date-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.5rem;
}

.date-row .sub-label {
    display: block;
    font-size: 0.55rem;
    color: var(--muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 0.3rem;
}

input {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.85rem;
    padding: 0.6rem 0.75rem;
    outline: none;
    transition: border-color 0.15s;
    appearance: none;
    -webkit-appearance: none;
}

input::placeholder {
    color: #3a3a3a;
}

input:focus {
    border-color: var(--accent);
}

.optional-tag {
    font-size: 0.55rem;
    color: #444;
    margin-left: 0.4rem;
    letter-spacing: 0;
    text-transform: none;
    font-style: italic;
}

button {
    width: 100%;
    background: var(--accent);
    color: #ffffff;
    border: none;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.75rem;
    cursor: pointer;
    transition: opacity 0.15s;
    margin-top: 0.5rem;
}

button:hover {
    opacity: 0.85;
}

.results {
    margin-top: 1.5rem;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    display: none;
    animation: fa 1s ease;
}

@keyframes fa {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

.results.visible {
    display: block;
}

.stat {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.stat:last-of-type {
    border-bottom: none;
}

.stat-label {
    font-size: 0.65rem;
    color: var(--muted);
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
}

.roast {
    margin-top: 1.25rem;
    background: #1a1a1a;
    border-left: 3px solid var(--danger);
    padding: 0.75rem 1rem;
    font-size: 0.72rem;
    color: #bbb;
    line-height: 1.6;
    font-style: italic;
}

.error {
    font-size: 0.7rem;
    color: var(--danger);
    margin-top: 0.5rem;
    display: none;
}

.error.visible {
    display: block;
}

.credits {
    margin-top: 1.5rem;
    font-size: 0.6rem;
    color: var(--muted);
    letter-spacing: 0.05em;
}

.credits a {
    color: var(--muted);
    text-decoration: none;
}

.credits a:hover {
    color: var(--text);
}