:root {
    --primary: #FCD34D;
    --primary-hover: #FBBF24;
    --secondary: #ec4899;
    --bg-darker: #09090b;
    --bg-dark: #18181b;
    --text-main: #f8fafc;
    --text-muted: #a1a1aa;
    --accent-blue: #38bdf8;
    --accent-purple: #c084fc;
    --accent-green: #10b981;
    --accent-yellow: #FCD34D;
    --accent-red: #ef4444;
    --glass-bg: rgba(24, 24, 27, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-darker);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-padding {
    padding: 100px 0;
}

.text-center { text-align: center; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }
.p-5 { padding: 3rem; }

.text-gradient {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    color: var(--accent-blue);
}

.text-green { color: var(--accent-green); }
.text-yellow { color: var(--accent-yellow); }
.text-purple { color: var(--accent-purple); }

.bg-dark {
    background-color: var(--bg-dark);
}

.grid {
    display: grid;
    gap: 30px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.align-center { align-items: center; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-small { padding: 10px 20px; font-size: 0.9rem; }
.btn-large { padding: 16px 32px; font-size: 1.1rem; }
.btn-full { width: 100%; }

.btn-primary {
    background: var(--primary);
    color: #000000;
    box-shadow: 0 4px 15px rgba(252, 211, 77, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(252, 211, 77, 0.4);
    color: #000000;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-glow {
    position: relative;
    z-index: 1;
}
.btn-glow::after {
    content: '';
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    background: var(--primary);
    z-index: -1;
    border-radius: 10px;
    filter: blur(15px);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.btn-glow:hover::after {
    opacity: 0.7;
}

.btn-shake {
    animation: shake 5s cubic-bezier(.36,.07,.19,.97) both infinite;
}

@keyframes shake {
    10%, 90% { transform: translate3d(-1px, 0, 0); }
    20%, 80% { transform: translate3d(2px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
    40%, 60% { transform: translate3d(4px, 0, 0); }
    0%, 100% { transform: translate3d(0, 0, 0); }
}

/* Glass UI */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
    padding: 20px 0;
}

.header.scrolled {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 15px 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

.logo-icon {
    color: var(--accent-blue);
    font-size: 1.8rem;
}

.nav-list {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--text-main);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 160px 0 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg-glow {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.15) 0%, rgba(15, 23, 42, 0) 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.tagline {
    display: inline-block;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 8px 16px;
    border-radius: 30px;
    font-size: 0.9rem;
    margin-bottom: 24px;
    color: var(--text-muted);
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text-muted);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-subtitle strong {
    color: var(--text-main);
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.hero-guarantees {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Mockups */
.mockup-container {
    position: relative;
    width: 100%;
    height: 500px;
}

.mockup-laptop {
    position: absolute;
    top: 0;
    right: 0;
    width: 90%;
    height: 400px;
    background: #1e293b;
    border-radius: 12px 12px 0 0;
    border: 8px solid #334155;
    border-bottom: 20px solid #475569;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.mockup-phone {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 180px;
    height: 380px;
    background: #1e293b;
    border-radius: 24px;
    border: 6px solid #334155;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    overflow: hidden;
    z-index: 2;
}

.floating {
    animation: floating 4s ease-in-out infinite;
}

@keyframes floating {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

.screen-content {
    width: 100%;
    height: 100%;
    background: var(--bg-darker);
    padding: 10px;
}

.bg-notification {
    display: flex;
    flex-direction: column;
    gap: 15px;
    justify-content: center;
    padding: 20px 10px;
}

.noti-bubble {
    background: var(--primary);
    padding: 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transform: translateX(-50px);
    opacity: 0;
    animation: slideInRight 0.5s forwards;
}

.noti-bubble:nth-child(2) {
    background: var(--secondary);
    animation-delay: 1.5s;
}

@keyframes slideInRight {
    to { transform: translateX(0); opacity: 1; }
}

/* Abstract Dashboard */
.dash-nav { height: 30px; background: rgba(255,255,255,0.05); margin-bottom: 10px; border-radius: 4px; }
.dash-header { height: 40px; background: rgba(255,255,255,0.05); margin-bottom: 10px; border-radius: 4px; }
.dash-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 10px; }
.dash-card { height: 60px; background: rgba(255,255,255,0.05); border-radius: 4px; }
.dash-chart { height: 150px; background: rgba(255,255,255,0.05); border-radius: 4px; }

/* Section Headers */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 50px;
}

/* Pain Points */
.pain-grid {
    grid-template-columns: repeat(2, 1fr);
}

.pain-icon {
    font-size: 2.5rem;
    color: var(--accent-red);
    margin-bottom: 20px;
}

.pain-title {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.pain-text {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.cross {
    color: var(--accent-red);
    margin-right: 5px;
}

/* Solutions */
.solution-blocks {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.sol-badge {
    display: inline-block;
    width: 40px; height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 20px;
}

.ai-badge { color: var(--accent-purple); background: rgba(192, 132, 252, 0.1); }
.ai-text { color: var(--accent-purple); font-size: 1rem; vertical-align: middle; }

.sol-title {
    font-size: 1.8rem;
    margin-bottom: 24px;
}

.sol-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.sol-list li {
    display: flex;
    gap: 15px;
    color: var(--text-muted);
}

.sol-list i {
    margin-top: 5px;
    color: var(--accent-blue);
}

.glass-box {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.glow-purple {
    box-shadow: 0 0 40px rgba(192, 132, 252, 0.1) inset;
}

/* Abstract UIs inside Solution Boxes */
.abstract-ui {
    width: 80%;
    padding: 20px;
}

.ui-bar {
    height: 12px;
    background: rgba(255,255,255,0.1);
    border-radius: 6px;
    margin-bottom: 15px;
}

.ui-circles {
    display: flex;
    gap: 10px;
    margin-top: 30px;
}

.ui-circle {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
}

.message-bubble {
    padding: 12px 20px;
    border-radius: 20px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.message-bubble.send {
    background: rgba(79, 70, 229, 0.2);
    border: 1px solid rgba(79, 70, 229, 0.3);
    margin-left: 20px;
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.ai-icon-large {
    font-size: 4rem;
    color: var(--accent-purple);
    margin-bottom: 30px;
    display: block;
    text-align: center;
}

.ai-data-points {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.ai-data-points span {
    background: rgba(192, 132, 252, 0.15);
    border: 1px solid rgba(192, 132, 252, 0.3);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--accent-purple);
}

/* Dashboard Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-card {
    text-align: center;
    padding: 30px 20px;
}

.stat-icon {
    font-size: 2rem;
    color: var(--accent-blue);
    margin-bottom: 15px;
}

.stat-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.stat-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.glass-panel {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 16px;
}

.dashboard-wireframe {
    background: #1e293b;
    border-radius: 8px;
    padding: 15px;
    height: 300px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    opacity: 0.5;
}

.w-top { height: 30px; background: #334155; border-radius: 4px; }
.w-middle { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; height: 80px; }
.w-col { background: #334155; border-radius: 4px; }
.w-bottom { display: grid; grid-template-columns: 2fr 1fr; gap: 15px; flex-grow: 1; }
.w-chart { background: #334155; border-radius: 4px; }

/* Benefits */
.benefit-card {
    display: flex;
    gap: 24px;
    background: var(--glass-bg);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.benefit-card:hover {
    background: rgba(30, 41, 59, 0.9);
    transform: translateY(-5px);
}

.benefit-icon {
    width: 60px; height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.bg-gradient-1 { background: linear-gradient(135deg, #3b82f6, #8b5cf6); }
.bg-gradient-2 { background: linear-gradient(135deg, #10b981, #3b82f6); }
.bg-gradient-3 { background: linear-gradient(135deg, #f59e0b, #ef4444); }
.bg-gradient-4 { background: linear-gradient(135deg, #ec4899, #8b5cf6); }

.benefit-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.benefit-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Founder Story */
.founder-card {
    position: relative;
    padding: 50px;
}

.founder-image-wrapper {
    position: relative;
    text-align: center;
}

.founder-image {
    width: 250px;
    height: 250px;
    margin: 0 auto;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--bg-dark), #334155);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: rgba(255,255,255,0.1);
    border: 4px solid var(--glass-border);
    position: relative;
}

.founder-name-tag {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    padding: 10px 20px;
    border-radius: 30px;
    width: max-content;
    display: flex;
    flex-direction: column;
}

.founder-name-tag strong { font-size: 1.1rem; }
.founder-name-tag span { font-size: 0.8rem; opacity: 0.8; }

.founder-quote-title {
    font-size: 1.8rem;
    color: var(--accent-blue);
    margin-bottom: 20px;
}

.quote-mark {
    font-size: 3rem;
    color: rgba(255,255,255,0.1);
    margin-bottom: 15px;
}

.founder-text {
    font-size: 1.05rem;
    margin-bottom: 15px;
    font-style: italic;
    color: var(--text-muted);
}

/* Vertical List (How it works) */
.vertical-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 800px;
    margin: 0 auto;
}

.list-card {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 20px 25px;
    transition: all 0.3s ease;
}

.list-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
}

.list-badge {
    width: 48px;
    height: 48px;
    background: rgba(252, 211, 77, 0.15);
    color: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    margin-right: 25px;
    flex-shrink: 0;
    font-family: var(--font-body);
}

.list-content {
    text-align: left;
}

.list-title {
    font-size: 1.15rem;
    margin-bottom: 5px;
    font-family: var(--font-body);
    font-weight: 600;
}

.list-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* FAQs */
.faq-container {
    max-width: 800px;
}

.accordion-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
}

.accordion-header {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: rgba(255,255,255,0.02);
}

.accordion-header h4 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 500;
}

.accordion-icon {
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-icon {
    transform: rotate(45deg);
    color: var(--accent-blue);
}

.accordion-body {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.accordion-item.active .accordion-body {
    padding: 20px;
    max-height: 500px; /* arbitrary large value */
    border-top: 1px solid var(--glass-border);
}

.accordion-body p {
    color: var(--text-muted);
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(to bottom, var(--bg-dark), var(--bg-darker));
}

.cta-wrapper {
    max-width: 700px;
    margin: 0 auto;
    padding: 50px;
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.9));
    border: 1px solid rgba(79, 70, 229, 0.3);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 40px rgba(79, 70, 229, 0.1) inset;
    text-align: center;
}

.cta-title {
    font-size: 2rem;
    color: white;
}

.cta-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.registration-form {
    text-align: left;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="tel"],
.form-group input[type="email"] {
    width: 100%;
    padding: 15px;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    color: white;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="tel"]:focus,
.form-group input[type="email"]:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(0,0,0,0.3);
}

.radio-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    background: rgba(255,255,255,0.05);
    padding: 12px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.2s ease;
}

.radio-label:hover {
    background: rgba(255,255,255,0.1);
}

/* Footer */
.footer {
    background: #090e1a;
    padding: 60px 0 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-info h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.footer-info p {
    color: var(--text-muted);
    max-width: 300px;
}

.footer-contact p {
    color: var(--text-muted);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact i {
    color: var(--accent-blue);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 20px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Animations */
.fade-in { opacity: 0; transition: opacity 0.8s ease; }
.fade-in.visible { opacity: 1; }

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
    .hero-container, .founder-card { grid-template-columns: 1fr; }
    .hero-content { text-align: center; }
    .hero-actions { justify-content: center; }
    .hero-guarantees { align-items: center; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .steps-container { flex-direction: column; gap: 30px; }
    .step-card { width: 100%; }
    .step-line { display: none; }
}

@media (max-width: 768px) {
    .nav { display: none; }
    .header-cta { display: none; }
    .mobile-menu-btn { display: block; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .reverse-mobile .sol-content { grid-row: 1; }
    .reverse-mobile .sol-visual { grid-row: 2; }
    .hero-title { font-size: 2rem; }
    .section-title { font-size: 2rem; }
    .footer-container { flex-direction: column; gap: 30px; }
    
    .hero-actions { 
        flex-direction: column; 
        width: 100%;
    }
    .hero-actions .btn {
        width: 100%;
    }

    .glass-box {
        height: auto;
        padding: 10px;
    }
    .glass-box img {
        height: auto !important;
        object-fit: contain !important;
        border-radius: 14px;
    }
}


/* ===== ZALO FLOATING BUTTON ===== */
.zalo-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 10px;
    background: #0068ff;
    color: white;
    padding: 12px 18px 12px 14px;
    border-radius: 50px;
    box-shadow: 0 4px 20px rgba(0, 104, 255, 0.5);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    animation: zalo-bounce 2s infinite;
}

.zalo-float:hover {
    background: #0052cc;
    transform: scale(1.05);
    box-shadow: 0 6px 25px rgba(0, 104, 255, 0.7);
}

.zalo-float img {
    filter: brightness(0) invert(1);
}

.zalo-float-label {
    white-space: nowrap;
}

@keyframes zalo-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* Ẩn label trên mobile nhỏ, chỉ giữ icon */
@media (max-width: 480px) {
    .zalo-float {
        bottom: 85px;
        right: 20px;
        padding: 12px;
        border-radius: 50%;
        width: 56px;
        height: 56px;
        justify-content: center;
    }
    .zalo-float-label {
        display: none;
    }
}


@media (max-width: 768px) {
    .sticky-cta-mobile {
        display: block;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        padding: 15px;
        background: var(--bg-darker);
        border-top: 1px solid rgba(255,255,255,0.1);
        z-index: 1000;
        box-shadow: 0 -10px 20px rgba(0,0,0,0.5);
    }
    .footer {
        padding-bottom: 90px;
    }
}