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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

/* ===================== NAV BAR (GIỮ NGUYÊN) ===================== */
.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.95);
    padding: 12px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 10px;
    z-index: 1000;
}

.nav-bar_left {
    display: flex;
    align-items: center;
}

.nav-bar_logo {
    font-size: 23pt;
    font-weight: bold;
    color: #0e3a80;
    margin-left: 150px;
}

.nav-bar_right {
    display: flex;
    align-items: center;
    margin-right: 150px;
}

.nav-bar_menu {
    display: flex;
    align-items: center;
    gap: 25px;
}

.nav-bar_menu a {
    font-size: 15pt;
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-bar_menu a:hover,
.nav-bar_menu a.active {
    color: #00bcd4;
}

.btn-action {
    background: #00bcd4;
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-action:hover {
    background: #0097a7;
}

.hamburger-menu {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.hamburger-menu span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 5px 0;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* ===================== PAGE HEADER ===================== */
.page-header {
    text-align: center;
    padding: 60px 20px 40px;
    background: linear-gradient(135deg, #0e3a80, #00bcd4);
    color: white;
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 32px;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 17px;
    opacity: 0.95;
}

/* ===================== FILTER ===================== */
.filter-section {
    background: white;
    padding: 25px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    margin-bottom: 35px;
}

.filter-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: center;
}

.filter-btn {
    padding: 12px 32px;
    border: 2px solid #00bcd4;
    background: white;
    color: #0e3a80;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 188, 212, 0.1);
}

.filter-btn.active,
.filter-btn:hover {
    background: #00bcd4;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 188, 212, 0.25);
}

/* ===================== SERVICES GRID & CARD ===================== */
.services-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.service-card img,
.service-card video {
    width: 100%;
    height: 240px;
    object-fit: cover;
    display: block;
}

.service-info {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.service-info h3 {
    color: #0e3a80;
    font-size: 18.5px;
    margin-bottom: 8px;
}

.service-desc {
    color: #666;
    font-size: 14.5px;
    margin-bottom: 15px;
    flex: 1;
}

.service-price {
    font-size: 21px;
    font-weight: 700;
    color: #00bcd4;
    margin-bottom: 18px;
}

.btn-action {
    width: 100%;
    padding: 13px;
    background: #00bcd4;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    margin-top: auto;
}

.btn-action:hover {
    background: #0097a7;
}

/* ===================== BACK TO TOP & CALL BUTTON ===================== */
.back-to-top {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 55px;
    height: 55px;
    background: #00bcd4;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.4);
    z-index: 99;
}

.back-to-top.show {
    display: flex;
}

.back-to-top:hover {
    background: #0097a7;
}

.call-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: #00bcd4;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.4);
    text-decoration: none;
    z-index: 98;
}

.call-button:hover {
    background: #0097a7;
    transform: scale(1.1);
}

/* ===================== FOOTER (GIỮ NGUYÊN) ===================== */
.footer {
    background: #0a0e27;
    color: white;
    padding: 70px 20px 40px;
    margin-top: 80px;
}

.footer-container {
    max-width: 1300px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 50px;
}

.footer-title {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 22px;
    color: #ffffff;
    border-bottom: 2px solid #00bcd4;
    padding-bottom: 10px;
}

.footer-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-list a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all 0.3s;
}

.footer-list a:hover {
    color: #00bcd4;
    padding-left: 4px;
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 992px) {
    .nav-bar_logo { margin-left: 20px; }
    .nav-bar_right { margin-right: 20px; }
}

@media (max-width: 768px) {
    .hamburger-menu { display: flex; }
    .nav-bar_menu {
        position: absolute;
        top: 70px;
        right: 15px;
        flex-direction: column;
        background: white;
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 6px 15px rgba(0,0,0,0.15);
        display: none;
        gap: 15px;
        min-width: 220px;
    }
    .nav-bar_menu.show { display: flex; }
}

@media (max-width: 480px) {
    .nav-bar_logo { font-size: 20pt; }
}

.footer {
    background: #0a0e27;
    color: white;
    padding: 60px 20px 40px;
    margin-top: 80px;
    border-top: 3px solid #00bcd4;
}

.footer-container {
    max-width: 1300px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 60px;
    margin-bottom: 50px;
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-title {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 25px;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid #00bcd4;
    padding-bottom: 12px;
}

.footer-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-list li {
    font-size: 14px;
    line-height: 1.6;
}

.footer-list a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
}

.footer-list a:hover {
    color: #00bcd4;
    transform: translateX(3px);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.contact-info .label {
    font-weight: 600;
    color: #00bcd4;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.contact-info a {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    font-size: 14px;
}

.contact-info span {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
}

.payment-section {
    background: rgba(0, 188, 212, 0.08);
    padding: 20px 15px;
    border-radius: 8px;
    border: 1px solid rgba(0, 188, 212, 0.3);
}

.payment-title {
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.payment-icons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.payment-icon {
    width: 40px;
    height: 40px;
    background: white;
    padding: 4px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    object-fit: contain;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid #e0e0e0;
}

.payment-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

.footer-bottom {
    text-align: center;
    padding-top: 25px;
    border-top: 1px solid rgba(0, 188, 212, 0.2);
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    max-width: 1300px;
    margin: 0 auto;
}

.footer-bottom p {
    margin: 0;
    line-height: 1.8;
}


@media (max-width: 1200px) {
    .footer-container {
        gap: 50px;
    }

    .footer-title {
        font-size: 14px;
    }

    .footer-list a {
        font-size: 13px;
    }
}

@media (max-width: 1024px) {
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 45px;
    }

    .footer {
        padding: 50px 20px 35px;
    }

    .payment-section {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .footer-container {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .footer {
        padding: 40px 15px 30px;
        margin-top: 60px;
    }

    .footer-title {
        font-size: 13px;
        margin-bottom: 20px;
        padding-bottom: 10px;
    }

    .footer-list {
        gap: 12px;
    }

    .footer-list a {
        font-size: 13px;
    }

    .payment-section {
        max-width: 100%;
    }

    .payment-icons {
        gap: 8px;
    }

    .payment-icon {
        width: 38px;
        height: 38px;
    }

    .footer-bottom {
        font-size: 12px;
        padding-top: 20px;
    }
}

@media (max-width: 480px) {
    .footer-container {
        gap: 25px;
        margin-bottom: 30px;
    }

    .footer {
        padding: 30px 12px 20px;
        margin-top: 40px;
    }

    .footer-title {
        font-size: 12px;
        margin-bottom: 15px;
        padding-bottom: 8px;
    }

    .footer-list {
        gap: 10px;
    }

    .footer-list a {
        font-size: 12px;
    }

    .footer-list li {
        font-size: 12px;
    }

    .contact-info .label {
        font-size: 11px;
    }

    .contact-info span {
        font-size: 13px;
    }

    .payment-title {
        font-size: 12px;
    }

    .payment-icons {
        gap: 6px;
    }

    .payment-icon {
        width: 35px;
        height: 35px;
    }

    .footer-bottom {
        font-size: 11px;
        padding-top: 15px;
    }
}

/* ===================== THÊM CHO SERVICE CARD (2 nút) ===================== */
.button-group {
    display: flex;
    gap: 12px;
    margin-top: 15px;
}

.btn-action {
    flex: 1;
    padding: 13px 16px;
    font-size: 15.5px;
    font-weight: 600;
    border-radius: 8px;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
}

.btn-datlich {
    background: #00bcd4;
    color: white;
}

.btn-datlich:hover {
    background: #0097a7;
}

.btn-chitiet {
    background: white;
    color: #00bcd4;
    border: 2px solid #00bcd4;
}

.btn-chitiet:hover {
    background: #00bcd4;
    color: white;
}

/* Điều chỉnh lại service card để có 2 nút */
.service-info {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.service-desc {
    flex: 1;
    margin-bottom: 12px;
}

.service-price {
    margin-bottom: 16px;
}

/* Làm cho ảnh/video responsive hơn */
.service-image {
    width: 100%;
    height: 240px;
    object-fit: cover;
    display: block;
}

/* Responsive cho button group */
@media (max-width: 480px) {
    .button-group {
        flex-direction: column;
        gap: 10px;
    }
}

.button-group {
    display: flex;
    gap: 12px;
    margin-top: 15px;
}

.btn-action {
    flex: 1;
    padding: 13px 16px;
    font-size: 15.5px;
    font-weight: 600;
    border-radius: 8px;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-datlich {
    background: #00bcd4;
    color: white;
}

.btn-datlich:hover {
    background: #0097a7;
}

.btn-chitiet {
    background: white;
    color: #00bcd4;
    border: 2px solid #00bcd4;
}

.btn-chitiet:hover {
    background: #00bcd4;
    color: white;
}

.service-image {
    width: 100%;
    height: 240px;
    object-fit: cover;
}

@media (max-width: 480px) {
    .button-group {
        flex-direction: column;
        gap: 10px;
    }
}