:root { color-scheme: dark; }

html, body {
    height: 100%;
    margin: 0;
    background: #000;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    color: #d8ffd8;
}

.app {
    height: 100%;
    display: grid;
    place-items: center;
    padding: 24px;
    box-sizing: border-box;
}

.card {
    width: min(860px, 100%);
    display: grid;
    gap: 14px;
    border: 1px solid rgba(0,255,0,0.18);
    background: rgba(0,255,0,0.04);
    padding: 20px;
    box-shadow: 0 0 28px rgba(0,255,0,0.08);
}

.center { text-align: center; }

.title {
    letter-spacing: 2px;
    color: #7CFF7C;
    opacity: 0.95;
}

.riddle {
    color: #fff;
    line-height: 1.4;
}

.error {
    color: #ffb0b0;
}

.form { display: grid; gap: 10px; }
.label { opacity: 0.85; }

.input {
    height: 42px;
    border: 1px solid rgba(0,255,0,0.25);
    background: rgba(0,255,0,0.06);
    color: #d8ffd8;
    padding: 0 12px;
    outline: none;
}

.input:focus { border-color: rgba(0,255,0,0.7); }

.btn {
    height: 42px;
    border: 1px solid rgba(0,255,0,0.35);
    background: rgba(0,255,0,0.10);
    color: #d8ffd8;
    cursor: pointer;
}

.btn:hover { border-color: rgba(0,255,0,0.7); }

.btn-ghost {
    background: transparent;
    opacity: 0.9;
}

.answer {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 8px 0 6px;
}

.letter {
    width: 38px;
    height: 46px;
    border: 1px solid rgba(0,255,0,0.25);
    background: rgba(0,255,0,0.06);
    color: #d8ffd8;
    text-align: center;
    font-size: 20px;
    outline: none;
}

.letter:focus { border-color: rgba(0,255,0,0.8); }

.letter[disabled] {
    opacity: 0.95;
    background: rgba(255,255,255,0.06);
}

.hint {
    opacity: 0.8;
    font-size: 13px;
}

.row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.timer {
    font-size: 40px;
    letter-spacing: 2px;
    color: #fff;
}

.final {
    margin-top: 12px;
    font-size: 22px;
    color: #7CFF7C;
}

.riddle-img{
    max-width: 100%;
    height: auto;
    border: 1px solid rgba(0,255,0,0.25);
    background: rgba(0,255,0,0.03);
    box-shadow: 0 0 22px rgba(0,255,0,0.08);
    border-radius: 10px;
    padding: 6px;
}