:root {
    --primary: #2D8CFF;
    /* Zoom Blue */
    --primary-dark: #0B5CFF;
    --secondary: #F6F7FB;
    --dark: #1E293B;
    --light: #FFFFFF;
    --text: #334155;
    --text-muted: #64748B;
    --accent: #FF3B30;
    --glass: rgba(255, 255, 255, 0.7);
    --border: rgba(226, 232, 240, 0.8);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', sans-serif;
    color: var(--text);
    background-color: #fcfcfd;
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
    font-weight: 700;
    color: var(--dark);
    line-height: 1.2;
}

h1 span {
    color: var(--primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.glass {
    background: var(--glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.nav {
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    text-decoration: none;
    letter-spacing: -1px;
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    gap: 10px;
}

.btn-primary {
    background: var(--primary);
    color: white !important;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(45, 140, 255, 0.3);
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary) !important;
}

.btn-outline:hover {
    background: var(--primary);
    color: white !important;
}

.btn-dark {
    background: var(--dark);
    color: white !important;
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-full {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 180px 0 100px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 10;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(45, 140, 255, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 64px;
    margin-bottom: 24px;
}

.hero p {
    font-size: 20px;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 40px;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 60px;
}

.hero-trust {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.hero-trust span {
    font-weight: 500;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 10px;
}

.hero-trust i {
    color: var(--primary);
}

/* Visual Blobs */
.hero-visual {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    z-index: 1;
}

.blob-1,
.blob-2 {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    right: -100px;
    animation: move 20s infinite alternate;
}

.blob-2 {
    width: 300px;
    height: 300px;
    background: #FF00FF;
    bottom: -50px;
    left: -100px;
    animation: move 15s infinite alternate-reverse;
}

@keyframes move {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(100px, 50px);
    }
}

/* Sections */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 40px;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 18px;
}

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.pricing-card {
    background: white;
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--primary);
}

.card-economical .card-tag {
    position: absolute;
    top: 20px;
    right: -10px;
    background: var(--accent);
    color: white;
    padding: 5px 15px;
    border-radius: 5px;
    font-weight: 700;
    font-size: 12px;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.1);
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 8px;
}

.package-type {
    color: var(--text-muted);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 30px;
    font-weight: 600;
}

.price-list {
    margin-bottom: 30px;
}

.price-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #f1f5f9;
}

.price-item .amount {
    font-weight: 700;
    color: var(--dark);
}

.best-value {
    background: rgba(45, 140, 255, 0.05);
    padding: 15px 10px !important;
    border-radius: 12px;
    border-bottom: none !important;
    margin-top: 10px;
    position: relative;
    flex-wrap: wrap;
}

.save-badge {
    font-size: 12px;
    color: var(--accent);
    font-weight: 800;
    width: 100%;
}

.features {
    list-style: none;
    margin-bottom: 30px;
    flex-grow: 1;
}

.features li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
}

.features i {
    color: #10b981;
}

.card-premium .features i {
    color: #f59e0b;
}

.contact-price {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 20px;
}

.contact-price small {
    font-size: 16px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Process */
.process {
    background: var(--secondary);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.step {
    text-align: center;
    flex: 1;
    padding: 0 20px;
}

.step-num {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 24px;
    box-shadow: 0 10px 20px rgba(45, 140, 255, 0.3);
}

.step h4 {
    margin-bottom: 12px;
    font-size: 20px;
}

.arrow {
    font-size: 24px;
    color: var(--text-muted);
    opacity: 0.3;
}

/* Payment */
.payment-card {
    display: flex;
    padding: 60px;
    border-radius: 32px;
    gap: 60px;
}

.payment-info {
    flex: 1.5;
}

.payment-info h2 {
    font-size: 32px;
    margin-bottom: 16px;
}

.bank-details {
    margin: 40px 0;
}

.bank-row {
    display: flex;
    padding: 15px 0;
    border-bottom: 1px solid var(--border);
}

.bank-row .label {
    width: 150px;
    color: var(--text-muted);
    font-weight: 500;
}

.bank-row .value {
    font-weight: 700;
    color: var(--dark);
    font-size: 18px;
}

.value.highlight {
    color: var(--primary);
    font-size: 24px;
}

.note-box {
    display: inline-block;
    padding: 12px 24px;
    background: var(--dark);
    color: white;
    border-radius: 12px;
    font-weight: 700;
    font-size: 20px;
    margin: 15px 0;
}

.sub-note {
    font-size: 14px;
    color: var(--text-muted);
}

.payment-qr {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.qr-container {
    background: white;
    padding: 20px;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border);
    text-align: center;
    max-width: 320px;
}

.qr-image {
    width: 100%;
    margin-bottom: 20px;
    border-radius: 12px;
}

.qr-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
}

.qr-label i {
    color: var(--primary);
    font-size: 18px;
}

/* Blog */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.blog-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.blog-img {
    height: 200px;
    background: #e2e8f0;
}

.blog-info {
    padding: 30px;
}

.blog-info h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.blog-info p {
    font-size: 15px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.read-more {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.read-more:after {
    content: '→';
}

.blog-cta {
    text-align: center;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 15px;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    background: white;
}

.faq-q {
    padding: 20px 30px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--dark);
}

.faq-a {
    padding: 0 30px 20px;
    color: var(--text-muted);
    display: none;
}

.faq-item.active .faq-a {
    display: block;
}

.faq-item.active .faq-q i {
    transform: rotate(45deg);
}

/* Footer */
.footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 80px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 60px;
}

.footer .logo {
    color: white;
    margin-bottom: 20px;
    display: block;
}

.footer h4 {
    color: white;
    margin-bottom: 24px;
}

.footer p {
    margin-bottom: 12px;
}

.footer ul {
    list-style: none;
}

.footer ul li {
    margin-bottom: 10px;
}

.footer ul a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}

.footer ul a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 30px 0;
    text-align: center;
    font-size: 14px;
}

/* Zalo Float */
.zalo-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    z-index: 999;
    transition: var(--transition);
}

.zalo-float img {
    width: 40px;
    height: 40px;
}

.zalo-float:hover {
    transform: scale(1.1);
}

.zalo-tooltip {
    position: absolute;
    right: 80px;
    background: white;
    color: var(--dark);
    padding: 8px 16px;
    border-radius: 10px;
    font-weight: 600;
    box-shadow: var(--shadow);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.zalo-float:hover .zalo-tooltip {
    opacity: 1;
}

/* Responsive */
@media (max-width: 992px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 48px;
    }

    .payment-card {
        flex-direction: column;
        padding: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .process-steps {
        flex-direction: column;
        gap: 40px;
    }

    .arrow {
        transform: rotate(90deg);
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }
}