/* ============================================================
   FORM TƯ VẤN NHANH – sidebar trang chi tiết (trường, tin tức)
   Màu chủ đạo website: #A41034 / #8F0728
   ============================================================ */
.tvn {
    --tvn-primary: #a41034;
    --tvn-primary-dark: #8f0728;
    --tvn-primary-soft: #fdf2f4;
    --tvn-border: #e5e7eb;
    --tvn-text: #1f2937;
    --tvn-muted: #6b7280;

    position: sticky;
    top: 90px;
    max-height: calc(100vh - 110px);
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
    background: #fff;
    border: 2px solid var(--tvn-primary);
    border-radius: 14px;
    box-shadow: 0 12px 32px rgba(164, 16, 52, .16);
    margin-top: 1.5rem;
    color: var(--tvn-text);
}

/* ── Header ─────────────────────────────────────────────── */
.tvn__head {
    display: flex;
    gap: .75rem;
    align-items: flex-start;
    padding: 1rem 1.1rem;
    background: linear-gradient(135deg, var(--tvn-primary-dark) 0%, var(--tvn-primary) 100%);
    color: #fff;
}
.tvn__icon {
    flex-shrink: 0;
    width: 42px; height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .18);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
}
.tvn__title {
    font-size: 1.05rem;
    font-weight: 800;
    margin: 0 0 .2rem;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: .02em;
}
.tvn__sub {
    font-size: .8rem;
    line-height: 1.45;
    margin: 0;
    color: rgba(255, 255, 255, .9);
}

/* ── Form ───────────────────────────────────────────────── */
.tvn__form { padding: 1rem 1.1rem 1.1rem; }
.tvn__field { margin-bottom: .6rem; }
.tvn__label {
    display: block;
    font-size: .76rem;
    font-weight: 700;
    color: var(--tvn-muted);
    margin-bottom: .3rem;
}
.tvn__control {
    display: block;
    width: 100%;
    padding: .5rem .7rem;
    border: 1.5px solid #d1d5db;
    border-radius: 8px;
    font-size: .88rem;
    line-height: 1.4;
    color: var(--tvn-text);
    background: #fff;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
.tvn__control:focus {
    border-color: var(--tvn-primary);
    box-shadow: 0 0 0 3px rgba(164, 16, 52, .12);
}
.tvn__control.is-invalid {
    border-color: #dc2626;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, .12);
}
.tvn__control--sm { padding: .4rem .6rem; font-size: .82rem; margin-top: .45rem; }
textarea.tvn__control { resize: vertical; min-height: 58px; }

.tvn__row3 {
    display: grid;
    grid-template-columns: 1fr 1.2fr 1.2fr;
    gap: .4rem;
}

/* Giới tính dạng segmented */
.tvn__seg {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .4rem;
}
.tvn__seg label { margin: 0; cursor: pointer; }
.tvn__seg input { position: absolute; opacity: 0; width: 0; height: 0; }
.tvn__seg span {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .35rem;
    padding: .45rem;
    border: 1.5px solid #d1d5db;
    border-radius: 8px;
    font-size: .86rem;
    color: #374151;
    transition: all .15s;
}
.tvn__seg input:checked + span {
    border-color: var(--tvn-primary);
    background: var(--tvn-primary-soft);
    color: var(--tvn-primary);
    font-weight: 700;
}
.tvn__seg input:focus-visible + span { box-shadow: 0 0 0 3px rgba(164, 16, 52, .2); }

/* Quốc gia */
.tvn__chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.tvn__chip {
    border: 1.5px solid #d1d5db;
    background: #fff;
    color: #374151;
    border-radius: 999px;
    padding: .25rem .7rem;
    font-size: .78rem;
    cursor: pointer;
    transition: all .15s;
}
.tvn__chip:hover { border-color: var(--tvn-primary); color: var(--tvn-primary); }
.tvn__chip.is-on {
    background: var(--tvn-primary);
    border-color: var(--tvn-primary);
    color: #fff;
}

/* Điều khoản */
.tvn__terms {
    display: flex;
    gap: .45rem;
    align-items: flex-start;
    font-size: .78rem;
    line-height: 1.45;
    color: #4b5563;
    margin: .2rem 0 .7rem;
    cursor: pointer;
}
.tvn__terms input { margin-top: .15rem; accent-color: var(--tvn-primary); flex-shrink: 0; }

/* Thông báo lỗi */
.tvn__alert {
    font-size: .8rem;
    border-radius: 8px;
    padding: .55rem .75rem;
    margin-bottom: .7rem;
}
.tvn__alert--error { background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c; }
.tvn__alert ul { margin: 0; padding-left: 1rem; }

/* Nút gửi */
.tvn__submit {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .75rem 1rem;
    border: 0;
    border-radius: 10px;
    background: var(--tvn-primary);
    color: #fff;
    font-size: .95rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .03em;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(164, 16, 52, .3);
    transition: background .15s, transform .15s;
}
.tvn__submit:hover { background: var(--tvn-primary-dark); transform: translateY(-1px); }
.tvn__submit:disabled { opacity: .7; cursor: wait; transform: none; }
.tvn__submit.is-loading i { animation: tvn-spin .8s linear infinite; }
.tvn__submit.is-loading i::before { content: "\f110"; }
@keyframes tvn-spin { to { transform: rotate(360deg); } }

.tvn__note {
    text-align: center;
    font-size: .72rem;
    color: var(--tvn-muted);
    margin: .55rem 0 0;
}

/* Thành công */
.tvn__done {
    padding: 1.5rem 1.25rem;
    text-align: center;
    font-size: .9rem;
    line-height: 1.6;
    color: #374151;
}
.tvn__done-icon {
    width: 56px; height: 56px;
    margin: 0 auto .75rem;
    border-radius: 50%;
    background: #059669;
    color: #fff;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.tvn__done p { margin: 0; }

/* ── Sidebar chứa form: kéo dài theo cột nội dung để form sticky được ── */
.has-tvn-sticky { align-self: stretch; }

/* ── Mobile / tablet: form nằm cuối, không sticky ───────── */
@media (max-width: 960px) {
    .tvn {
        position: static;
        max-height: none;
        overflow: visible;
    }
}

/* Trang tin tức: khối sidebar cũ đang sticky cả cụm → chỉ để form sticky */
.has-tvn-sticky .nd-sidebar__sticky { position: static; }