/* GIAO DIỆN SOFT BRUTALISM & NAMESPACED - LCM & GCD CALCULATOR */
.lcmgcd-container {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    max-width: 900px; margin: 20px auto;
    border: 3px solid #111111; border-radius: 12px;
    box-shadow: 6px 6px 0px #111111; padding: 30px;
    background: #ffffff; color: #111111; box-sizing: border-box;
}

.lcmgcd-container * { box-sizing: border-box; }

.lcmgcd-title {
    font-family: 'Montserrat', sans-serif; font-size: 2rem; text-align: center;
    text-transform: uppercase; margin-top: 0; margin-bottom: 10px; font-weight: 900;
}

.lcmgcd-desc { text-align: center; color: #444; font-weight: 600; margin-bottom: 30px; line-height: 1.5; }

.lcmgcd-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; margin-bottom: 30px; }

/* Cột Nhập liệu */
.lcmgcd-input-panel {
    background-color: #f9f9f9; border: 3px solid #111; border-radius: 10px;
    padding: 25px; box-shadow: 4px 4px 0px #111; display: flex; flex-direction: column;
}

.lcmgcd-label { display: block; font-weight: 800; font-size: 1.05rem; margin-bottom: 10px; }

.lcmgcd-input-wrap { display: flex; gap: 10px; }
.lcmgcd-input {
    flex: 1; padding: 15px; font-size: 1.2rem; font-weight: 800;
    font-family: 'Courier New', Courier, monospace; border: 3px solid #111;
    border-radius: 8px; outline: none; background-color: #fff; box-shadow: inset 2px 2px 0px rgba(0,0,0,0.05);
}
.lcmgcd-input:focus { border-color: #2d7bb5; background-color: #e6f7ff; }

.lcmgcd-btn-clear {
    background-color: #eceae4; border: 3px solid #111; border-radius: 8px;
    padding: 0 15px; font-size: 1.2rem; cursor: pointer; box-shadow: 2px 2px 0px #111;
    transition: transform 0.1s; display: flex; align-items: center; justify-content: center;
}
.lcmgcd-btn-clear:active { transform: translate(2px, 2px); box-shadow: 0px 0px 0px #111; }

.lcmgcd-hint { display: block; margin-top: 10px; color: #666; font-size: 0.9rem; font-weight: 600; }

.lcmgcd-actions { display: flex; flex-direction: column; gap: 12px; margin-top: 25px; }

.lcmgcd-btn {
    width: 100%; font-family: 'Montserrat', sans-serif; font-weight: 900; font-size: 1.05rem;
    padding: 15px; border: 3px solid #111; border-radius: 8px; cursor: pointer;
    box-shadow: 4px 4px 0px #111; transition: transform 0.1s; text-transform: uppercase; color: #111;
}
.lcmgcd-btn:active { transform: translate(4px, 4px); box-shadow: 0px 0px 0px #111; }

.lcmgcd-btn-ucln { background-color: #ffb7b2; } /* Đỏ nhạt */
.lcmgcd-btn-bcnn { background-color: #b5ead7; } /* Xanh nhạt */
.lcmgcd-btn-prime { background-color: #fdfd96; } /* Vàng */

/* Cột Kết quả */
.lcmgcd-result-panel { display: flex; flex-direction: column; }
.lcmgcd-panel-heading {
    margin: 0 0 15px 0; font-family: 'Montserrat', sans-serif; font-size: 1.2rem;
    border-bottom: 3px dashed #111; padding-bottom: 10px;
}

.lcmgcd-result-box {
    flex: 1; background-color: #fff; border: 3px solid #111; border-radius: 10px;
    padding: 25px; box-shadow: 4px 4px 0px #111; display: flex; flex-direction: column;
}

.lcmgcd-empty { font-weight: 600; color: #888; font-style: italic; text-align: center; margin-top: 20px; }

.lcmgcd-result-title { font-size: 1rem; font-weight: 800; color: #555; margin-bottom: 10px; }
.lcmgcd-result-value {
    font-family: 'Montserrat', monospace; font-size: 1.6rem; font-weight: 900;
    color: #111; word-break: break-all; margin-bottom: 25px; background: #f4f4f4; padding: 15px; border-radius: 8px; border: 2px dashed #ccc;
}
.lcmgcd-prime-row { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #ddd; padding: 10px 0; }
.lcmgcd-prime-row:last-child { border-bottom: none; }
.lcmgcd-prime-num { font-size: 1.2rem; font-weight: 800; color: #555; }
.lcmgcd-prime-factors { font-size: 1.4rem; color: #e05a47; font-weight: 900; }

.lcmgcd-btn-copy {
    background-color: #e6f7ff; border: 3px solid #111; border-radius: 6px;
    padding: 12px; font-weight: 900; font-size: 1rem; cursor: pointer;
    box-shadow: 3px 3px 0px #111; transition: transform 0.1s; font-family: 'Montserrat', sans-serif;
    margin-top: auto;
}
.lcmgcd-btn-copy:active { transform: translate(3px, 3px); box-shadow: 0px 0px 0px #111; }

.lcmgcd-error {
    margin-top: 15px; background-color: #ffe6e6; color: #e05a47; border: 2px dashed #e05a47;
    border-radius: 8px; padding: 12px; font-weight: 700; font-size: 0.95rem; display: none; text-align: center;
}

/* Notes */
.lcmgcd-notes { background-color: #e2f0cb; border: 3px dashed #111; border-radius: 8px; padding: 20px; }
.lcmgcd-notes h4 { margin: 0 0 10px 0; font-family: 'Montserrat', sans-serif; font-size: 1.1rem; }
.lcmgcd-notes ul { margin: 0; padding-left: 20px; font-size: 0.95rem; line-height: 1.6; }

/* Toast */
#lcmgcdToast {
    visibility: hidden; min-width: 200px; background-color: #111111; color: #ffffff;
    text-align: center; border-radius: 8px; padding: 12px; position: fixed;
    z-index: 9999; bottom: 30px; left: 50%; transform: translateX(-50%);
    font-weight: bold; opacity: 0; transition: opacity 0.3s, bottom 0.3s;
}
#lcmgcdToast.show { visibility: visible; opacity: 1; bottom: 50px; }

@media (max-width: 800px) {
    .lcmgcd-layout { grid-template-columns: 1fr; }
}