:root {
    --black: #000000;
    --white: #ffffff;
    --gray: #e5e5e5;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    background-color: var(--white);
    color: var(--black);
    margin: 0;
    padding: 40px 20px;
    line-height: 1.5;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

h1, h2, h3, h4 {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    margin-top: 0;
}

.description {
    font-size: 1.05rem;
    color: #333;
    max-width: 800px;
    margin-top: 15px;
    line-height: 1.6;
}

.header {
    border-bottom: 2px solid var(--black);
    padding-bottom: 25px;
    margin-bottom: 40px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    font-weight: 600;
}

input {
    width: 100%;
    max-width: 400px;
    padding: 12px;
    border: 1px solid var(--black);
    background: var(--white);
    color: var(--black);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    box-sizing: border-box;
}

input:focus {
    box-shadow: 4px 4px 0px var(--black);
}

button {
    background-color: var(--black);
    color: var(--white);
    border: 1px solid var(--black);
    padding: 12px 24px;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
}

button:hover:not(:disabled) {
    background-color: var(--white);
    color: var(--black);
    box-shadow: 4px 4px 0px var(--black);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

button.outline {
    background-color: var(--white);
    color: var(--black);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.card {
    border: 1px solid var(--black);
    padding: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--white);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card:hover {
    background: var(--black);
    color: var(--white);
}

.card:hover .meta { color: var(--gray); }
.card:hover .badge { border-color: var(--white); }

.card-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.meta {
    font-size: 0.85rem;
    color: #555;
    margin: 4px 0;
}

.badge {
    display: inline-block;
    border: 1px solid var(--black);
    padding: 4px 8px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 15px;
}

.hidden { display: none !important; }

.option-item {
    border: 1px solid var(--black);
    padding: 20px;
    margin-bottom: 20px;
}

.original-tag {
    background: var(--black);
    color: var(--white);
    padding: 2px 8px;
    font-size: 0.7rem;
    text-transform: uppercase;
    margin-left: 10px;
    vertical-align: middle;
}

.back-nav {
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}