/**
 * Trang liên hệ — theo màu chủ đạo theme (#ee1926)
 */

.contact-section {
    --contact-primary: #ee1926;
    --contact-primary-dark: #c91520;
    --contact-primary-soft: rgba(238, 25, 38, 0.08);
    --contact-primary-ring: rgba(238, 25, 38, 0.22);
    --contact-text: #1d1e20;
    --contact-text-muted: #5c5f66;
    --contact-border: #e8eaed;
    --contact-surface: #ffffff;

    padding: 2.5rem 0 3rem;
    background: linear-gradient(180deg, #fff8f8 0%, #f6f7f9 45%, #f0f1f4 100%);
}

.contact-section .hl-container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 10px;
    padding-right: 10px;
}

/* Tiêu đề trang — khớp breadcrumb / page-title theme */
.contact-section .page-title {
    font-size: clamp(1.35rem, 2.5vw, 1.75rem);
    font-weight: 700;
    color: var(--contact-text);
    margin-bottom: 2rem;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    line-height: 1.35;
    padding-bottom: 1rem;
    position: relative;
}

.contact-section .page-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 64px;
    height: 3px;
    background: linear-gradient(90deg, var(--contact-primary), #ff5a5a);
    border-radius: 2px;
}

/* Thẻ nội dung */
.contact-form-wrapper,
.contact-info-wrapper {
    background: var(--contact-surface);
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow:
        0 1px 2px rgba(0, 0, 0, 0.04),
        0 12px 32px rgba(0, 0, 0, 0.06);
    height: 100%;
}

.contact-form-wrapper {
    padding: 2rem 2rem 2.25rem;
    border-top: 3px solid var(--contact-primary);
}

.contact-info-wrapper {
    padding: 2rem 1.75rem;
    border-top: 3px solid var(--contact-primary);
}

.contact-form-wrapper h2,
.contact-info-wrapper h2 {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 0 1.5rem;
    padding-bottom: 1rem;
    color: var(--contact-text);
    border-bottom: 1px solid var(--contact-border);
    letter-spacing: 0.02em;
}

.contact-form-wrapper h2::before,
.contact-info-wrapper h2::before {
    content: '';
    flex-shrink: 0;
    width: 4px;
    height: 1.15em;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--contact-primary) 0%, #ff6b6b 100%);
}

/* Form */
.contact-form-wrapper .form-label {
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--contact-text);
    font-size: 0.9rem;
}

.contact-form-wrapper .form-control {
    border-radius: 8px;
    border: 1px solid var(--contact-border);
    padding: 0.65rem 0.9rem;
    font-size: 0.9375rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background-color: #fafbfc;
}

.contact-form-wrapper .form-control:hover {
    border-color: #d0d4da;
}

.contact-form-wrapper .form-control:focus {
    border-color: var(--contact-primary);
    box-shadow: 0 0 0 3px var(--contact-primary-ring);
    outline: none;
    background-color: var(--contact-surface);
}

.contact-form-wrapper .form-control::placeholder {
    color: #9aa0a8;
    opacity: 1;
}

.contact-form-wrapper textarea.form-control {
    resize: vertical;
    min-height: 130px;
}

.contact-form-wrapper .text-danger {
    color: var(--contact-primary);
    font-weight: 700;
}

/* Nút gửi — đồng bộ theme (ghi đè Bootstrap xanh nếu có) */
.contact-form-wrapper .btn-primary {
    background-color: var(--contact-primary);
    border-color: var(--contact-primary);
    padding: 0.7rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
    box-shadow: 0 2px 8px rgba(238, 25, 38, 0.25);
}

.contact-form-wrapper .btn-primary:hover {
    background-color: var(--contact-primary-dark);
    border-color: var(--contact-primary-dark);
    box-shadow: 0 4px 14px rgba(238, 25, 38, 0.35);
    transform: translateY(-1px);
}

.contact-form-wrapper .btn-primary:focus {
    background-color: var(--contact-primary-dark);
    border-color: var(--contact-primary-dark);
    box-shadow: 0 0 0 3px var(--contact-primary-ring);
}

.contact-form-wrapper .btn-primary:active {
    transform: translateY(0);
}

.contact-form-wrapper .btn-primary:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Khối thông tin liên hệ */
.contact-info-item {
    margin-bottom: 0;
    padding: 1rem 0 1rem 1rem;
    border-left: 3px solid var(--contact-primary-soft);
    border-bottom: 1px solid var(--contact-border);
}

.contact-info-item:first-of-type {
    padding-top: 0.25rem;
}

.contact-info-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.contact-info-item h4 {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 0 0.45rem;
    color: var(--contact-primary);
}

.contact-info-item p {
    margin: 0;
    color: var(--contact-text-muted);
    font-size: 0.9375rem;
    line-height: 1.65;
}

.contact-info-item a {
    color: var(--contact-primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.contact-info-item a:hover {
    color: var(--contact-primary-dark);
    border-bottom-color: var(--contact-primary-dark);
}

/* Validation */
.contact-form-wrapper .form-control.is-invalid {
    border-color: #dc3545;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.contact-form-wrapper .form-control.is-valid {
    border-color: #28a745;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.contact-section .invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.35rem;
    font-size: 0.875rem;
    color: #c82333;
}

.contact-section .valid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.35rem;
    font-size: 0.875rem;
    color: #28a745;
}

@media (max-width: 991px) {
    .contact-section {
        padding: 1.5rem 0 2.25rem;
    }

    .contact-form-wrapper,
    .contact-info-wrapper {
        padding: 1.35rem 1.15rem;
        margin-bottom: 1.25rem;
    }

    .contact-form-wrapper h2,
    .contact-info-wrapper h2 {
        font-size: 1.1rem;
    }
}

@media (max-width: 575px) {
    .contact-section .page-title {
        margin-bottom: 1.5rem;
    }
}