/* Hide horizontal scrollbar globally */
html {
    overflow-x: hidden;
    min-height: 100vh;
    background: #fff;
}
body {
    overflow-x: hidden;
    min-height: 100vh;
    background: #fff;
    width: 100%;
}

/* Overflow wrapper - chặn tràn ngang triệt để trên mọi trình duyệt */
#qhPageWrap {
    width: 100%;
    overflow-x: hidden;
    position: relative;
}

/*
 * QHUN22 Mobile - Custom Styles
 * Màu sắc thương hiệu: #A9CCF0 (xanh pastel), #D3BAFF (tím pastel)
 * Font: Signika
 */

/* Import Google Font */
@import url('https://fonts.googleapis.com/css2?family=Signika:wght@300;400;500;600;700&display=swap');

/* ==================== CUSTOM SCROLLBAR ==================== */
/* PC: hiện thanh cuộn mỏng cho html/body và mọi elements */
@media (min-width: 769px) {
    ::-webkit-scrollbar,
    *::-webkit-scrollbar {
        width: 6px;
        height: 6px;
    }

    ::-webkit-scrollbar-track,
    *::-webkit-scrollbar-track {
        background: #f1f1f100;
    }

    ::-webkit-scrollbar-thumb,
    *::-webkit-scrollbar-thumb {
        background: #c1c1c1;
    }

    ::-webkit-scrollbar-thumb:hover,
    *::-webkit-scrollbar-thumb:hover {
        background: #a1a1a100;
    }
}

/* Mobile: ẩn hoàn toàn thanh cuộn */
@media (max-width: 768px) {
    ::-webkit-scrollbar,
    *::-webkit-scrollbar {
        display: none !important;
        width: 0 !important;
        height: 0 !important;
    }
    html, body, * {
        scrollbar-width: none !important;
        -ms-overflow-style: none !important;
    }
}

/* CSS Variables - Brand Colors */
:root {
    --qh-primary: #b91c1c;
    --qh-primary-hover: #991b1b;
    --qh-primary-light: #fee2e2;
    --qh-price: #b91c1c;
    --qh-secondary: #fee2e2;
    --qh-primary-dark: #991b1b;
    --qh-secondary-dark: #991b1b;
    --qh-text: #333333;
    --qh-text-light: #666666;
    --qh-bg: #FFFFFF;
    --qh-white: #FFFFFF;
    --qh-border: #EEEEEE;
    --qh-shadow: rgba(0, 0, 0, 0.08);
    --qh-radius: 12px;
    --qh-radius-sm: 8px;
    --qh-radius-lg: 16px;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Signika', sans-serif;
    background-color: #fff;
    color: var(--qh-text);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ==================== HEADER STYLES ==================== */
.qh-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10000;
    background: var(--qh-white);
    box-shadow: 0 2px 12px var(--qh-shadow);
}

/* Add padding to body to account for fixed header */
body {
    padding-top: 80px;
}

.qh-header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.qh-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    gap: 24px;
}

/* Logo */
.qh-logo {
    flex-shrink: 0;
}

.qh-logo-img {
    height: 48px;
    width: auto;
    object-fit: contain;
}

/* Search Bar */
.qh-search {
    flex: 1;
    max-width: 600px;
    position: relative;
}

.qh-search-form {
    width: 100%;
    display: flex;
    align-items: center;
    border: 2px solid var(--qh-primary);
    border-radius: var(--qh-radius);
    overflow: hidden;
    background: #ffffff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.qh-search-form:focus-within {
    border-color: var(--qh-primary);
    box-shadow: none;
}

.qh-search-input {
    width: 100%;
    height: 48px;
    padding: 0 20px;
    border: none;
    border-radius: 0;
    font-family: 'Signika', sans-serif;
    font-size: 15px;
    background: #ffffff;
    transition: all 0.3s ease;
}

.qh-search-btn {
    height: 48px;
    padding: 0 16px;
    border: none;
    border-left: 1px solid var(--qh-primary);
    border-radius: 0;
    background: var(--qh-primary);
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: none;
}

.qh-search-input:focus {
    outline: none;
    background: var(--qh-white);
    box-shadow: none;
}

.qh-search-input:focus-visible,
.qh-search-btn:focus,
.qh-search-btn:focus-visible {
    outline: none;
    box-shadow: none;
}

.qh-search-input::placeholder {
    color: #999;
}

/* Autocomplete Dropdown */
.qh-autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--qh-white);
    border: 1px solid var(--qh-border);
    border-top: none;
    border-radius: 0 0 var(--qh-radius) var(--qh-radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    max-height: 400px;
    overflow-y: auto;
    z-index: 10001;
    display: none;
}

.qh-autocomplete-list {
    padding: 8px 0;
}

.qh-autocomplete-section {
    padding: 4px 0;
}

.qh-autocomplete-section:not(:last-child) {
    border-bottom: 1px solid var(--qh-border);
}

.qh-autocomplete-header {
    padding: 8px 16px 6px;
    font-size: 12px;
    font-weight: 600;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.qh-autocomplete-item {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    text-decoration: none;
    color: var(--qh-text);
    transition: background 0.15s ease;
    cursor: pointer;
}

.qh-autocomplete-item:hover,
.qh-autocomplete-item.active {
    background: #fef2f2;
}

.qh-autocomplete-product {
    gap: 12px;
}

.qh-autocomplete-img {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 8px;
    background: #f5f5f5;
}

.qh-autocomplete-img-placeholder {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: linear-gradient(135deg, #e0e0e0 0%, #f5f5f5 100%);
}

.qh-autocomplete-info {
    flex: 1;
    min-width: 0;
}

.qh-autocomplete-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--qh-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.qh-autocomplete-name strong {
    color: var(--qh-primary);
}

.qh-autocomplete-brand {
    font-size: 12px;
    color: #888;
    margin-top: 2px;
}

.qh-autocomplete-price {
    font-size: 14px;
    font-weight: 600;
    color: var(--qh-primary);
    white-space: nowrap;
}

.qh-autocomplete-keyword {
    gap: 10px;
}

.qh-autocomplete-icon {
    width: 18px;
    height: 18px;
    color: #888;
    flex-shrink: 0;
}

.qh-autocomplete-keyword-text {
    font-size: 14px;
    color: var(--qh-text);
}

.qh-autocomplete-keyword-text strong {
    color: var(--qh-primary);
}

/* Responsive */
@media (max-width: 768px) {
    .qh-autocomplete-dropdown {
        position: fixed;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        max-height: 60vh;
        border-radius: var(--qh-radius-lg) var(--qh-radius-lg) 0 0;
        border-bottom: none;
    }

    .qh-autocomplete-product {
        gap: 10px;
    }

    .qh-autocomplete-img,
    .qh-autocomplete-img-placeholder {
        width: 40px;
        height: 40px;
    }
}

.qh-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.qh-header-icon {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--qh-radius);
    color: var(--qh-text-light);
    transition: all 0.3s ease;
    cursor: pointer;
}

.qh-header-icon:hover {
    transform: none;
    box-shadow: none;
}

.qh-icon-circle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--qh-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.3s ease;
}

/* Icon circle giữ nguyên màu nền khi hover */

.qh-icon-svg {
    width: 22px;
    height: 22px;
    color: var(--qh-text-light);
    transition: all 0.3s ease;
}

.qh-header-icon:hover .qh-icon-svg {
    color: var(--qh-text);
}

.qh-icon-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: #dc2626;
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    line-height: 1;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    font-variant-numeric: tabular-nums;
    border: 2px solid var(--qh-white);
}

.qh-icon-badge:empty::before {
    content: '0';
}

.qh-header-icon--stat {
    min-width: 150px;
}

.qh-header-icon--stat .qh-icon-text {
    min-width: 76px;
}

.qh-icon-badge--stat {
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    border-radius: 999px;
}

#qh-wishlist-count:empty::before,
#qh-cart-count:empty::before,
#qh-order-count:empty::before {
    content: '0';
}

.qh-icon-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 70px;
    transition: transform 0.2s ease;
}

.qh-header-icon:hover .qh-icon-text {
    transform: translateY(-2px);
}

.qh-icon-label {
    font-size: 11px;
    color: #999;
    transition: color 0.2s ease;
}

.qh-icon-title {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: color 0.2s ease;
}

.qh-header-icon:hover .qh-icon-label,
.qh-header-icon:hover .qh-icon-title {
    color: var(--qh-text);
}

/* ==================== BUTTON STYLES ==================== */
.qh-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--qh-radius);
    font-family: 'Signika', sans-serif;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.qh-btn-primary {
    background: linear-gradient(135deg, var(--qh-primary) 0%, var(--qh-secondary) 100%);
    color: #b91c1c;
    border: 1px solid #fca5a5;
}

.qh-btn-primary:hover {
    transform: translateY(-2px);
    background: #b91c1c;
    color: #ffffff;
    border-color: #b91c1c;
    box-shadow: 0 6px 20px rgba(185, 28, 28, 0.28);
}

.qh-btn-secondary {
    background: #fee2e2;
    color: #b91c1c;
    border: 1px solid #fca5a5;
}

.qh-btn-secondary:hover {
    transform: translateY(-2px);
    background: #991b1b;
    color: #ffffff;
    border-color: #991b1b;
    box-shadow: 0 6px 20px rgba(185, 28, 28, 0.3);
}

.qh-btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: var(--qh-white);
}

.qh-btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.qh-btn-outline {
    background: transparent;
    color: var(--qh-text);
    border: 1px solid var(--qh-border);
}

.qh-btn-outline:hover {
    background: var(--qh-primary);
    border-color: var(--qh-primary);
    color: var(--qh-text);
}

/* ==================== PRODUCT CARD HOVER ==================== */
.qh-product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.qh-product-card:hover .qh-quick-actions {
    opacity: 1;
}

/* ==================== OTP BUTTON STYLES ==================== */
.qh-otp-group {
    display: flex;
    gap: 8px;
}

.qh-otp-group .qh-input {
    flex: 1;
}

.qh-otp-btn {
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--qh-primary) 0%, var(--qh-secondary) 100%);
    color: #b91c1c;
    border: 1px solid #fca5a5;
    border: none;
    border-radius: var(--qh-radius);
    font-family: var(--qh-font);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.qh-otp-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    background: #b91c1c;
    color: #ffffff;
    border-color: #b91c1c;
    box-shadow: 0 6px 20px rgba(185, 28, 28, 0.25);
}

.qh-otp-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: #ccc;
}

.qh-otp-message {
    padding: 10px 15px;
    border-radius: var(--qh-radius);
    margin-top: 8px;
    font-size: 14px;
}

.qh-otp-message.success {
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.qh-otp-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ==================== CARD STYLES ==================== */
.qh-card {
    background: var(--qh-white);
    border-radius: var(--qh-radius);
    box-shadow: 0 4px 16px var(--qh-shadow);
    overflow: hidden;
    transition: all 0.3s ease;
}

.qh-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--qh-shadow);
}

/* ==================== TOAST NOTIFICATIONS ==================== */
.qh-toast-container {
    position: fixed;
    top: 90px;
    right: 24px;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.qh-toast {
    background: var(--qh-white);
    border-radius: var(--qh-radius);
    box-shadow: 0 8px 32px var(--qh-shadow);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    max-width: 400px;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.qh-toast-show {
    opacity: 1;
    transform: translateX(0);
}

.qh-toast-hide {
    opacity: 0;
    transform: translateX(120%);
}

.qh-toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.qh-toast-text {
    flex: 1;
    font-size: 14px;
    color: var(--qh-text);
    line-height: 1.4;
}

.qh-toast-success {
    border-left: 4px solid #22c55e;
}

.qh-toast-success .qh-toast-icon {
    color: #22c55e;
}

.qh-toast-error {
    border-left: 4px solid #ef4444;
}

.qh-toast-error .qh-toast-icon {
    color: #ef4444;
}

.qh-toast-warning {
    border-left: 4px solid #f59e0b;
}

.qh-toast-warning .qh-toast-icon {
    color: #f59e0b;
}

/* ===== TOAST MOBILE ===== */
@media (max-width: 768px) {
    .qh-toast-container {
        top: 76px;
        right: 12px;
        left: 12px;
        align-items: stretch;
        gap: 8px;
    }

    .qh-toast {
        min-width: 0;
        max-width: 100%;
        width: 100%;
        padding: 12px 14px;
        gap: 10px;
        border-radius: 10px;
        box-shadow: 0 4px 16px rgba(0,0,0,0.13);
        transform: translateY(-16px);
        opacity: 0;
    }

    .qh-toast-show {
        opacity: 1;
        transform: translateY(0);
    }

    .qh-toast-hide {
        opacity: 0;
        transform: translateY(-12px);
    }

    .qh-toast-text {
        font-size: 13px;
    }

    .qh-toast-icon svg {
        width: 18px;
        height: 18px;
    }
}

/* ==================== MODAL STYLES ==================== */
.qh-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 30000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.qh-modal.active {
    opacity: 1;
    visibility: visible;
}

.qh-modal-content {
    background: var(--qh-white);
    border-radius: var(--qh-radius-lg);
    padding: 32px;
    max-width: 450px;
    width: 90%;
    transform: scale(0.9);
    transition: all 0.3s ease;
}

.qh-modal.active .qh-modal-content {
    transform: scale(1);
}

.qh-modal-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.qh-modal-text {
    color: var(--qh-text-light);
    margin-bottom: 24px;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .qh-header-inner {
        gap: 16px;
    }

    .qh-search {
        max-width: 400px;
    }

    .qh-icon-text {
        display: none;
    }

    .qh-header-icon {
        padding: 10px;
    }

    .qh-header-icon--stat {
        min-width: auto;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }

    .qh-header-container {
        padding: 0 16px;
    }

    .qh-header-inner {
        height: 70px;
        flex-wrap: wrap;
    }

    .qh-logo-img {
        height: 40px;
    }

    .qh-search {
        order: 3;
        max-width: 100%;
        flex-basis: 100%;
        margin-top: 12px;
    }

    .qh-header-actions {
        gap: 4px;
    }
}

/* ==================== FORMS ==================== */
.qh-form-group {
    margin-bottom: 20px;
}

.qh-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--qh-text);
}

.qh-input {
    width: 100%;
    height: 48px;
    padding: 0 16px;
    border: 2px solid var(--qh-border);
    border-radius: var(--qh-radius);
    font-family: 'Signika', sans-serif;
    font-size: 15px;
    transition: all 0.3s ease;
}

.qh-input:focus {
    outline: none;
    border-color: var(--qh-primary);
}

/* ==================== USP SECTION ==================== */
.qh-usp-section {
    background: #fff;
    padding: 24px 0 32px;
    margin-top: 10px;
}

.qh-usp-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Cách xa nhẹ tiêu đề "TẠI SAO NÊN CHỌN CHÚNG TÔI?" với grid bên dưới */
.qh-usp-container .qh-featured-title-wrap {
    margin-bottom: 18px;
}

.qh-usp-title {
    text-align: center;
    font-size: 26px;
    font-weight: 700;
    color: var(--qh-text);
    margin-bottom: 40px;
    letter-spacing: 0.5px;
}

.qh-usp-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

/* Card không bọc box, chỉ là khối nội dung trên nền section */
.qh-usp-card {
    background: transparent;
    padding: 0;
    text-align: center;
    transition: transform 0.3s ease;
}

.qh-usp-card:hover {
    transform: none;
}

/* Icon: ô vuông trắng bo góc, đổ bóng nhẹ (giống ảnh design) */
.qh-usp-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: var(--qh-white);
    border-radius: var(--qh-radius);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.qh-usp-card:hover .qh-usp-icon {
    transform: scale(1.05);
}

.qh-usp-icon svg {
    width: 26px;
    height: 26px;
    stroke: #b91c1c;
}

.qh-usp-card-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--qh-text);
    margin-bottom: 6px;
}

.qh-usp-card-desc {
    font-size: 14px;
    color: var(--qh-text-light);
    line-height: 1.5;
}

/* ==================== FOOTER (COOLMATE style) ==================== */
.qh-footer {
    margin-top: 0;
    background: #0f172a;
}

.qh-footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ----- Top: NHẬN TƯ VẤN | LIÊN HỆ | KẾT NỐI (đồng bộ: nền đen, 3 cột) ----- */
.qh-footer-top {
    padding: 30px 0;
    background: #000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.qh-footer-top-inner {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    align-items: start;
    gap: 32px;
}

/* Tiêu đề chung cho 3 cột: bold, uppercase, màu trắng */
.qh-footer-feedback-title,
.qh-footer-block-title {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 12px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.qh-footer-feedback-desc {
    font-size: 14px;
    color: #cbd5e1;
    line-height: 1.6;
    margin: 0 0 20px;
    max-width: 420px;
}

/* Form: 1 hộp ghép - input trái (lớn) + nút phải (nhỏ), đen-trắng */
.qh-footer-feedback-form {
    display: flex;
    gap: 0;
    max-width: 420px;
    border: 1px solid #fff;
    border-radius: 4px;
    overflow: hidden;
}

.qh-footer-feedback-input {
    flex: 1;
    padding: 12px 16px;
    border: none;
    border-right: 1px solid #fff;
    background: #000;
    color: #fff;
    font-size: 14px;
    font-family: 'Signika', sans-serif;
    outline: none;
}

.qh-footer-feedback-input::placeholder {
    color: #9ca3af;
}

.qh-footer-feedback-input:focus {
    background: #000;
}

.qh-footer-feedback-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: #fff;
    color: #000;
    border: none;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
    font-family: 'Signika', sans-serif;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    position: relative;
}

.qh-footer-feedback-btn:hover:not(:disabled) {
    background: #e5e5e5;
}

.qh-footer-feedback-btn-arrow {
    color: #000;
}

.qh-footer-feedback-btn:disabled {
    opacity: 0.8;
    cursor: not-allowed;
}

.qh-footer-feedback-btn .qh-newsletter-spinner {
    display: none;
    position: absolute;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(15, 23, 42, 0.2);
    border-top-color: #0f172a;
    border-radius: 50%;
    animation: qh-newsletter-spin 0.7s linear infinite;
}

.qh-footer-feedback-btn .qh-footer-feedback-btn-arrow {
    margin-left: 2px;
}

/* Giữa: LIÊN HỆ - icon tròn xám nhạt trên nền đen */
.qh-footer-contact-block {
    display: flex;
    flex-direction: column;
    gap: 14px;
    justify-self: center;
}

.qh-footer-contact-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.qh-footer-contact-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #1f2937;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 18px;
    flex-shrink: 0;
}

.qh-footer-contact-label {
    display: block;
    font-size: 13px;
    color: #94a3b8;
    margin-bottom: 2px;
}

.qh-footer-contact-value {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
    transition: color 0.2s;
}

.qh-footer-contact-value:hover {
    color: var(--qh-primary);
}

/* Phải: KẾT NỐI VỚI CHÚNG TÔI - 4 icon tròn xám nhạt */
.qh-footer-social-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-self: center;
}

.qh-footer-social-block .qh-footer-block-title {
    margin-bottom: 16px;
}

.qh-footer-social-circles {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.qh-footer-social-circle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #1f2937;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #94a3b8;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.qh-footer-social-circle:hover {
    background: #374151;
    color: #fff;
}

/* ----- Giữa: Cột liên kết (design: nền đen, title trắng, link xám, 5 cột, nhóm phụ) ----- */
.qh-footer-mid {
    padding: 48px 0 40px;
    background: #000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.qh-footer-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 40px 48px;
    text-align: left;
}

.qh-footer-col-title {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 20px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.qh-footer-col-subtitle {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin: 28px 0 16px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.qh-footer-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.qh-footer-nav a {
    font-size: 14px;
    color: #cbd5e1;
    text-decoration: none;
    line-height: 1.5;
    transition: color 0.2s;
}

.qh-footer-nav a:hover {
    color: #fff;
}

.qh-footer-address {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.qh-footer-address-block,
.qh-footer-address p {
    font-size: 14px;
    color: #cbd5e1;
    line-height: 1.6;
    margin: 0;
}

/* ----- Đáy: Copyright + Badges ----- */
/* Badge Bộ Công Thương: nằm dưới Địa chỉ liên hệ (trong cột đen) */
.qh-footer-badges {
    margin-top: 20px;
}

.qh-footer-badge-img {
    height: 32px;
    width: auto;
    max-width: 90px;
    object-fit: contain;
    opacity: 0.95;
    transition: opacity 0.3s ease;
    display: block;
}

.qh-footer-badge-img:hover {
    opacity: 1;
}

/* Đáy footer: chỉ Copyright, căn giữa, nền đen (đồng bộ với phần giữa) */
.qh-footer-bottom {
    background: #000;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.qh-footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: center;
}

.qh-footer-copyright {
    text-align: center;
}

.qh-footer-copyright p {
    font-size: 13px;
    color: #94a3b8;
    margin: 0;
}

.qh-footer-badge {
    font-size: 11px;
    color: #64748b;
    padding: 4px 10px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}

@keyframes qh-newsletter-spin {
    to {
        transform: rotate(360deg);
    }
}

/* ----- Footer Responsive ----- */
@media (max-width: 1024px) {
    .qh-footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    /* === FOOTER TOP === */
    .qh-footer-top {
        padding: 28px 0 24px;
    }

    /* 3 cột → 1 cột, mỗi phần căn giữa */
    .qh-footer-top-inner {
        grid-template-columns: 1fr;
        gap: 28px;
        text-align: center;
    }

    /* Cột 1: NHẬN TƯ VẤN */
    .qh-footer-feedback-desc {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .qh-footer-feedback-form {
        flex-direction: column;
        max-width: 100%;
    }

    .qh-footer-feedback-input {
        border-right: none;
        border-bottom: 1px solid #fff;
        text-align: left;
    }

    .qh-footer-feedback-btn {
        border-radius: 0;
        justify-content: center;
    }

    /* Cột 2: LIÊN HỆ — full width, căn giữa, icon+text xếp cột */
    .qh-footer-contact-block {
        justify-self: stretch;
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }

    .qh-footer-contact-row {
        justify-content: center;
    }

    /* Cột 3: KẾT NỐI — full width, căn giữa */
    .qh-footer-social-block {
        justify-self: stretch;
        align-items: center;
    }

    /* === FOOTER MID === */
    .qh-footer-mid {
        padding: 32px 0 24px;
    }

    .qh-footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px 20px;
    }

    .qh-footer-col-subtitle {
        margin-top: 20px;
    }

    /* === FOOTER BOTTOM === */
    .qh-footer-bottom-inner {
        justify-content: center;
        text-align: center;
    }

    .qh-footer-copyright {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .qh-footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* Nút cuộn lên: bên phải, phía trên thanh contact đỏ */
.qh-scroll-top {
    position: fixed;
    right: 24px;
    bottom: 80px;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--qh-primary));
    color: var(--qh-text);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(185, 28, 28, 0.28);
    transition: transform 0.2s, opacity 0.3s, box-shadow 0.2s;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
}

.qh-scroll-top.qh-scroll-top--visible {
    opacity: 1;
    pointer-events: auto;
}

.qh-scroll-top:hover {
    transform: scale(1.08);
    background: #b91c1c;
    color: #ffffff;
    box-shadow: 0 6px 24px rgba(185, 28, 28, 0.35);
}

/* Nút Zalo: đồng bộ cùng style */
.qh-zalo-fab {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--qh-primary));
    color: var(--qh-text);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(185, 28, 28, 0.28);
    transition: transform 0.2s, box-shadow 0.2s;
    z-index: 9998;
    text-decoration: none;
}

.qh-zalo-fab:hover {
    transform: scale(1.08);
    background: #b91c1c;
    color: #ffffff;
    box-shadow: 0 6px 24px rgba(185, 28, 28, 0.35);
}

@media (max-width: 768px) {
    .qh-scroll-top {
        right: 16px;
        bottom: 72px;
        width: 46px;
        height: 46px;
        font-size: 22px;
    }

    .qh-zalo-fab {
        right: 16px;
        bottom: 16px;
        width: 46px;
        height: 46px;
        font-size: 22px;
    }
}

/* ==================== USP + FOOTER RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .qh-usp-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .qh-usp-section {
        padding: 16px 0 24px;
        margin-top: 0;
    }

    .qh-usp-title {
        font-size: 20px;
        margin-bottom: 28px;
    }

    .qh-usp-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .qh-usp-card {
        padding: 0;
    }
}

/* ==================== MAIN CONTENT ==================== */
.qh-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 24px;
    min-height: calc(100vh - 200px);
    background: #fff;
}

@media (max-width: 768px) {
    .qh-main {
        padding: 12px 10px;
        max-width: 100%;
        overflow-x: clip;
    }
}

.qh-page-title {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--qh-text);
}

/* ==================== STUDENT-TEACHER VERIFICATION STYLES ==================== */
.qh-pf-student {
    max-width: 100%;
    margin: 0 auto;
}

/* Split Layout - 2 Columns */
.qh-pf-student-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.qh-pf-student-left,
.qh-pf-student-right {
    background: var(--qh-white);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.qh-pf-student-col-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--qh-text);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--qh-primary);
}

/* Empty State */
.qh-pf-student-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
    color: #94a3b8;
    text-align: center;
}

.qh-pf-student-empty svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.qh-pf-student-empty p {
    font-size: 14px;
    margin: 0;
}

/* Header Section */
.qh-pf-student-header {
    text-align: center;
    margin-bottom: 24px;
}

.qh-pf-student-header-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.qh-pf-student-header-icon svg {
    width: 32px;
    height: 32px;
    color: #b91c1c;
}

.qh-pf-student-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--qh-text);
    margin-bottom: 8px;
}

.qh-pf-student-desc {
    color: var(--qh-text-light);
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
}

.qh-pf-student-desc strong {
    color: #b91c1c;
    font-weight: 600;
}

/* Success Badge */
.qh-pf-student-success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* Status Badge - Green check */
.qh-pf-student-status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #d1fae5;
    border: 1px solid #6ee7b7;
    border-radius: 8px;
    padding: 12px 16px;
    color: #065f46;
    font-weight: 500;
}

.qh-pf-student-status-badge svg {
    width: 20px;
    height: 20px;
    color: #059669;
    flex-shrink: 0;
}

/* Description */
.qh-pf-student-desc {
    color: var(--qh-text-light);
    margin: 0 0 16px 0;
    font-size: 14px;
    line-height: 1.5;
}

.qh-pf-student-desc strong {
    color: #b91c1c;
    font-weight: 600;
}

.qh-pf-student-success-icon {
    width: 24px;
    height: 24px;
    color: #059669;
    flex-shrink: 0;
}

.qh-pf-student-success-text {
    color: #059669;
    font-weight: 600;
    font-size: 14px;
}

.qh-pf-student-success-text strong {
    font-weight: 600;
}

/* Verified Email Display */
.qh-pf-student-verified {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border: 1px solid #86efac;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    margin-bottom: 20px;
}

.qh-pf-student-verified-icon {
    width: 48px;
    height: 48px;
    background: #d1fae5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
}

.qh-pf-student-verified-icon svg {
    width: 24px;
    height: 24px;
    color: #059669;
}

.qh-pf-student-verified-title {
    color: #059669;
    font-size: 16px;
    font-weight: 600;
    display: block;
    margin-bottom: 4px;
}

.qh-pf-student-verified-email {
    color: #166534;
    font-size: 14px;
    font-weight: 500;
}

/* Voucher Grid */
.qh-pf-student-voucher-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.qh-pf-student-voucher-status {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.qh-pf-student-voucher-status-icon {
    width: 48px;
    height: 48px;
    background: #d1fae5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
}

.qh-pf-student-voucher-status-icon svg {
    width: 24px;
    height: 24px;
    color: #059669;
}

.qh-pf-student-voucher-status-title {
    color: #059669;
    font-size: 16px;
    font-weight: 600;
    display: block;
    margin-bottom: 8px;
}

.qh-pf-student-voucher-status-desc {
    color: #166534;
    font-size: 13px;
    margin: 0;
}

/* Voucher Code Card */
.qh-pf-student-voucher-code {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.qh-pf-student-voucher-code::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.08'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.qh-pf-student-voucher-code-title {
    font-size: 13px;
    opacity: 0.9;
    margin-bottom: 8px;
    position: relative;
}

.qh-pf-student-voucher-code-discount {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
    position: relative;
}

.qh-pf-student-voucher-code-limit {
    font-size: 12px;
    opacity: 0.9;
    margin-bottom: 10px;
    position: relative;
}

.qh-pf-student-voucher-code-box {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    padding: 8px;
    display: inline-block;
    position: relative;
}

.qh-pf-student-voucher-code-label {
    font-size: 11px;
    opacity: 0.8;
    margin-bottom: 2px;
    position: relative;
}

.qh-pf-student-voucher-code-value {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
    position: relative;
}

.qh-pf-student-voucher-code-expire {
    font-size: 11px;
    opacity: 0.7;
    margin-top: 8px;
    position: relative;
}

/* Voucher Used Status */
.qh-pf-student-voucher-used {
    background: #fef3c7;
    border: 1px solid #fcd34d;
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.qh-pf-student-voucher-used-icon {
    width: 20px;
    height: 20px;
    color: #d97706;
    flex-shrink: 0;
}

.qh-pf-student-voucher-used-text {
    color: #92400e;
    font-weight: 600;
    font-size: 14px;
}

.qh-pf-student-voucher-used-desc {
    margin: 8px 0 0 0;
    color: #b45309;
    font-size: 13px;
}

/* Voucher Expired Status */
.qh-pf-student-voucher-expired {
    background: #fee2e2;
    border: 1px solid #fecaca;
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.qh-pf-student-voucher-expired-icon {
    width: 20px;
    height: 20px;
    color: #dc2626;
    flex-shrink: 0;
}

.qh-pf-student-voucher-expired-text {
    color: #dc2626;
    font-weight: 600;
    font-size: 14px;
}

/* Form Card */
.qh-pf-student-form {
    background: var(--qh-white);
    border: 1px solid var(--qh-border);
    border-radius: 12px;
    padding: 24px;
}

.qh-pf-student-form-group {
    margin-bottom: 20px;
}

.qh-pf-student-form-group:last-of-type {
    margin-bottom: 0;
}

.qh-pf-student-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--qh-text);
    margin-bottom: 8px;
    text-align: left;
}

.qh-pf-student-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--qh-border);
    border-radius: 8px;
    font-size: 15px;
    box-sizing: border-box;
    font-family: 'Signika', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    transition: all 0.3s ease;
    background: var(--qh-white);
    color: var(--qh-text);
}

.qh-pf-student-input:focus {
    outline: none;
    border-color: var(--qh-primary);
    box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.16);
}

.qh-pf-student-input::placeholder {
    color: #9ca3af;
}

/* OTP Input with letter spacing */
.qh-pf-student-input-otp {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--qh-border);
    border-radius: 8px;
    font-size: 18px;
    letter-spacing: 6px;
    text-align: center;
    box-sizing: border-box;
    font-family: 'Signika', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    transition: all 0.3s ease;
    background: var(--qh-white);
    color: var(--qh-text);
}

.qh-pf-student-input-otp:focus {
    outline: none;
    border-color: var(--qh-primary);
    box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.16);
}

.qh-pf-student-input-otp::placeholder {
    color: #d1d5db;
    letter-spacing: 2px;
}

/* Message Display */
.qh-pf-student-message {
    margin-bottom: 16px;
    font-size: 14px;
    min-height: 20px;
}

.qh-pf-student-message.error {
    color: #dc2626;
    background: rgba(239, 68, 68, 0.1);
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.qh-pf-student-message.success {
    color: #059669;
    background: rgba(5, 150, 105, 0.1);
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid rgba(5, 150, 105, 0.2);
}

.qh-pf-student-message.info {
    color: #b91c1c;
    background: rgba(185, 28, 28, 0.1);
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid rgba(185, 28, 28, 0.2);
}

/* Buttons */
.qh-pf-student-btn {
    width: 100%;
    padding: 14px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: 'Signika', sans-serif;
}

.qh-pf-student-btn-primary {
    background: linear-gradient(135deg, var(--qh-primary) 0%, var(--qh-secondary) 100%);
    color: #b91c1c;
    border: 1px solid #fca5a5;
}

.qh-pf-student-btn-primary:hover {
    transform: translateY(-2px);
    background: #b91c1c;
    color: #ffffff;
    border-color: #b91c1c;
    box-shadow: 0 6px 20px rgba(185, 28, 28, 0.35);
}

.qh-pf-student-btn-secondary {
    background: var(--qh-primary);
    color: #b91c1c;
    border: 1px solid #fca5a5;
}

.qh-pf-student-btn-secondary:hover {
    transform: translateY(-2px);
    background: #b91c1c;
    color: #ffffff;
    border-color: #b91c1c;
    box-shadow: 0 6px 20px rgba(185, 28, 28, 0.28);
}

.qh-pf-student-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Responsive */
@media (max-width: 640px) {
    .qh-pf-student-split {
        grid-template-columns: 1fr;
    }

    .qh-pf-student-voucher-grid {
        grid-template-columns: 1fr;
    }

    .qh-pf-student-title {
        font-size: 20px;
    }

    .qh-pf-student-form {
        padding: 20px;
    }
}