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

body {
    font-family: system-ui, -apple-system, sans-serif;
    max-width: 480px;
    margin: 0 auto;
    padding: 80px 20px;
    background: #0a0a0a;
    color: #e5e5e5;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Staggered entrance */
@keyframes enter {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

h1, .field, button[type="submit"] {
    animation: enter 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

h1 { animation-delay: 0ms; }
.field:nth-child(1) { animation-delay: 60ms; }
.field:nth-child(2) { animation-delay: 120ms; }
button[type="submit"] { animation-delay: 180ms; }

h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    letter-spacing: -0.5px;
}

h1::after {
    content: '';
    display: block;
    width: 2rem;
    height: 3px;
    background: #d4c896;
    margin-top: 0.75rem;
    margin-bottom: 2rem;
    border-radius: 2px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

label {
    font-size: 0.75rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

input[type="file"] {
    font-family: inherit;
    font-size: 0.85rem;
    color: #e5e5e5;
    background: #111;
    border: 1px solid #222;
    border-radius: 6px;
    padding: 0.6rem 0.75rem;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

input[type="file"]:hover {
    border-color: #444;
    background: #151515;
}

input[type="file"]:focus-visible {
    outline: none;
    border-color: #d4c896;
}

.field-hint {
    font-size: 0.7rem;
    color: #555;
    letter-spacing: 0.3px;
}

input[type="file"]::file-selector-button {
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 500;
    color: #e5e5e5;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 4px;
    padding: 0.35rem 0.75rem;
    margin-right: 0.75rem;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

input[type="file"]::file-selector-button:hover {
    background: #222;
    border-color: #444;
}

button[type="submit"] {
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    color: #0a0a0a;
    background: #d4c896;
    border: none;
    border-radius: 6px;
    padding: 0.75rem 1.25rem;
    margin-top: 0.5rem;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s, opacity 0.2s;
}

button[type="submit"]:hover {
    background: #e0d4a8;
}

button[type="submit"]:active {
    background: #c4b886;
    transform: scale(0.98);
}

button[type="submit"]:disabled {
    background: #1a1a1a;
    color: #555;
    cursor: not-allowed;
    transform: none;
}

button[type="submit"]:focus-visible {
    outline: 2px solid #d4c896;
    outline-offset: 2px;
}

/* Scoring spinner */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

button[type="submit"]:disabled {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Result entrance */
@keyframes reveal {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-box {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-top: 2rem;
    padding: 1.25rem 1.5rem;
    background: #111;
    border: 1px solid #1a1a1a;
    border-radius: 8px;
    animation: reveal 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.result-label {
    font-size: 0.7rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.result-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: #d4c896;
    letter-spacing: -1px;
    font-variant-numeric: tabular-nums;
}

.error-box {
    margin-top: 1.25rem;
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
    color: #c99;
    background: rgba(200, 150, 150, 0.08);
    border: 1px solid rgba(200, 150, 150, 0.2);
    border-radius: 6px;
    animation: reveal 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hidden {
    display: none;
}