/* Hai nút chuyển công cụ từ khóa — thường nằm trong box trắng, căn giữa */
.kw-tools-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    align-items: center;
    margin: 0;
}

.kw-tools-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 12px;
    border: 1px solid #cbd5e1;
    background: #ffffff;
    color: #0f172a;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.kw-tools-btn:hover {
    border-color: #94a3b8;
    background: #f8fafc;
    color: #0f172a;
}

.kw-tools-btn.active {
    color: #059669 !important;
    border-color: rgba(5, 150, 105, 0.75) !important;
    background: #ecfdf5 !important;
    box-shadow: 0 0 0 1px rgba(5, 150, 105, 0.35);
}

/* Vùng chứa trong panel trắng */
.kw-tools-panel {
    padding: 18px 20px 16px;
    border-bottom: 1px solid #e2e8f0;
    background: #ffffff;
}

/* Shell: menu + box trắng — giữ bề ngang hiện tại, căn giữa viewport */
.kw-page-shell {
    --kw-block-w: min(68rem, calc(100vw - 15rem));
    width: var(--kw-block-w);
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
}

.kw-white-panel {
    width: 100%;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid rgba(226, 232, 240, 0.9);
    box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.18);
    overflow: hidden;
}

body:has(.kw-white-panel) .kw-page-root {
    width: 100%;
    max-width: none !important;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
    padding-bottom: 7.5rem;
    box-sizing: border-box;
}

@media (max-width: 900px) {
    .kw-page-shell {
        --kw-block-w: min(100%, calc(100vw - 2rem));
    }
}

@media (max-width: 640px) {
    body:has(.kw-white-panel) .kw-page-root {
        padding-bottom: 8.5rem;
    }
}

.kw-white-panel > .kw-tools-panel {
    border-bottom: 1px solid #e2e8f0;
}

/* Hub: chỉ có 2 nút trong box trắng */
.kw-white-panel--hub {
    max-width: 640px;
    margin: 20px auto 0;
    padding: 28px 24px 32px;
}

.kw-white-panel--hub .kw-tools-panel {
    border-bottom: none;
    padding: 0;
}

.kw-white-panel--hub .kw-tools-nav {
    padding: 0;
}

/* Trang tối không có box trắng (fallback ngoài panel) */
body:not(:has(.kw-white-panel)) .kw-tools-nav .kw-tools-btn {
    border-color: rgba(255, 255, 255, 0.28);
    background: rgba(255, 255, 255, 0.08);
    color: #f8fafc;
}

body:not(:has(.kw-white-panel)) .kw-tools-nav .kw-tools-btn:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(147, 197, 253, 0.75);
    color: #fff;
}

body:not(:has(.kw-white-panel)) .kw-tools-nav .kw-tools-btn.active {
    color: #00e676 !important;
    border-color: rgba(0, 230, 118, 0.85) !important;
    background: rgba(2, 8, 20, 0.88) !important;
    box-shadow: 0 0 0 1px rgba(0, 230, 118, 0.45), 0 0 16px rgba(0, 230, 118, 0.22);
}

html[data-theme="light"] .kw-tools-btn,
html[data-theme="system"][data-theme-resolved="light"] .kw-tools-btn {
    background: #ffffff;
    border-color: #cbd5e1;
    color: #0f172a;
}

html[data-theme="light"] .kw-tools-btn:hover,
html[data-theme="system"][data-theme-resolved="light"] .kw-tools-btn:hover {
    border-color: #94a3b8;
    background: #f8fafc;
}

html[data-theme="light"] .kw-tools-btn.active,
html[data-theme="system"][data-theme-resolved="light"] .kw-tools-btn.active {
    color: #059669 !important;
    border-color: rgba(5, 150, 105, 0.75) !important;
    background: #ecfdf5 !important;
    box-shadow: 0 0 0 1px rgba(5, 150, 105, 0.35);
}