:root {
    --fchat-blue: #0b57d0;
    --fchat-blue-dark: #0842a0;
    --fchat-blue-light: #1a73e8;
    --fchat-bg-grey: #f8fafc;
    --fchat-card: #ffffff;
    --fchat-border: #e2e8f0;
    --fchat-text: #1e293b;
    --fchat-text-muted: #64748b;
    --fchat-accent: #f59e0b;
    --fchat-green: #10b981;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--fchat-text);
    background-color: #ffffff;
    line-height: 1.55;
    font-size: 14.5px;
    overflow-x: hidden;
}

.container {
    max-width: 1260px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================================================
   FCHAT-STYLE HEADER (ROYAL BLUE, SUPER CLEAN, NO PHONE, NO ADDRESS)
   ========================================================================== */
.fchat-header {
    background: transparent;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
}

.fchat-nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: nowrap;
    gap: 20px;
}

.fchat-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #ffffff;
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.fchat-logo-icon {
    width: 34px;
    height: 34px;
    background: #ffffff;
    color: var(--fchat-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.fchat-nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-left: auto;
    margin-right: 20px;
    white-space: nowrap;
}

.fchat-nav-links a {
    color: #ffffff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    opacity: 0.92;
    transition: opacity 0.2s;
    white-space: nowrap;
}

.fchat-nav-links a:hover {
    opacity: 1;
    text-decoration: underline;
}

.fchat-nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    white-space: nowrap;
}

.btn-fchat-login {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 30px;
    border: 1.5px solid rgba(255, 255, 255, 0.75);
    transition: all 0.25s;
    white-space: nowrap;
}

.btn-fchat-login:hover {
    background: #ffffff;
    color: var(--fchat-blue);
    border-color: #ffffff;
}

/* ==========================================================================
   FCHAT HERO SECTION (DEEP BLUE WITH MACBOOK + IPHONE OVERLAY & WAVE)
   ========================================================================== */
.fchat-hero {
    position: relative;
    background: linear-gradient(180deg, #094ebf 0%, #0d5ee0 50%, #1a73e8 100%);
    padding-top: 105px;
    padding-bottom: 0;
    color: #ffffff;
    text-align: center;
    overflow: hidden;
}

.hero-main-title {
    font-size: 30px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 12px;
    letter-spacing: -0.3px;
    color: #ffffff;
    max-width: 880px;
    margin-left: auto;
    margin-right: auto;
}

.hero-lead-text {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 20px;
    font-weight: 400;
    letter-spacing: 0.1px;
    line-height: 1.55;
    max-width: 820px;
    margin-left: auto;
    margin-right: auto;
}

.btn-hero-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #ffffff;
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 700;
    padding: 11px 28px;
    border-radius: 30px;
    border: 2px solid #ffffff;
    background: transparent;
    transition: all 0.3s ease;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    margin-bottom: 25px;
}

.btn-hero-cta:hover {
    background: #ffffff;
    color: var(--fchat-blue);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}

/* ==========================================================================
   MACBOOK + IPHONE HARDWARE MOCKUP (REPLICATING FCHAT.VN SCREENSHOT)
   ========================================================================== */
.devices-mockup-wrapper {
    position: relative;
    max-width: 760px;
    margin: 0 auto -45px auto;
    z-index: 2;
}

/* MacBook Frame */
.macbook-frame {
    background: #0d1117;
    border-radius: 16px 16px 0 0;
    padding: 10px 10px 0 10px;
    border: 2.5px solid #cbd5e1;
    border-bottom: none;
    box-shadow: 0 25px 50px -10px rgba(0, 0, 0, 0.45);
    max-width: 760px;
    margin: 0 auto;
    position: relative;
}

.macbook-camera {
    width: 6px;
    height: 6px;
    background: #334155;
    border-radius: 50%;
    margin: 0 auto 8px auto;
}

.macbook-screen {
    background: #ffffff;
    border-radius: 6px 6px 0 0;
    overflow: hidden;
    position: relative;
    text-align: left;
    display: flex;
    flex-direction: column;
}

.macbook-screen-img {
    width: 100%;
    height: auto;
    display: block;
}

.macbook-base {
    height: 16px;
    background: linear-gradient(180deg, #e2e8f0 0%, #cbd5e1 100%);
    border-radius: 0 0 14px 14px;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
}

.macbook-notch {
    width: 120px;
    height: 4px;
    background: #94a3b8;
    border-radius: 0 0 4px 4px;
    margin: 0 auto;
}

/* Inside MacBook Screen: Realistic Chat Dashboard */
.screen-browser-bar {
    background: #f1f5f9;
    border-bottom: 1px solid #e2e8f0;
    padding: 8px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.browser-dots {
    display: flex;
    gap: 6px;
}

.browser-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.browser-url-pill {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 2px 14px;
    font-size: 11.5px;
    color: #64748b;
    margin-left: 10px;
    flex: 1;
    max-width: 320px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.screen-app-body {
    display: grid;
    grid-template-columns: 240px 1fr;
    flex: 1;
    height: 100%;
}

.app-sidebar {
    background: #f8fafc;
    border-right: 1px solid #e2e8f0;
    padding: 12px;
}

.sidebar-chat-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border-radius: 8px;
    margin-bottom: 6px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
}

.sidebar-chat-item.active {
    background: #e0f2fe;
    border-color: #bae6fd;
}

.sidebar-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #0284c7;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
}

.sidebar-info {
    font-size: 11.5px;
    line-height: 1.3;
}

.sidebar-name {
    font-weight: 700;
    color: #0f172a;
}

.sidebar-preview {
    color: #64748b;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
}

.app-chat-main {
    background: #ffffff;
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.chat-thread-bubbles {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 12.5px;
}

.chat-bubble-user {
    align-self: flex-end;
    background: #0b57d0;
    color: #ffffff;
    padding: 8px 12px;
    border-radius: 12px 12px 0 12px;
    max-width: 75%;
}

.chat-bubble-ai {
    align-self: flex-start;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    color: #1e293b;
    padding: 10px 14px;
    border-radius: 12px 12px 12px 0;
    max-width: 80%;
    line-height: 1.5;
}

.chat-center-video-btn {
    position: absolute;
    top: 50%;
    left: 45%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    color: var(--fchat-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all 0.25s;
    z-index: 10;
}

.chat-center-video-btn:hover {
    transform: translate(-50%, -50%) scale(1.08);
}

/* Smartphone Overlay Frame (Right side) */
.phone-overlay-frame {
    position: absolute;
    right: 25px;
    bottom: -20px;
    width: 235px;
    height: 440px;
    background: #000000;
    border-radius: 36px;
    padding: 8px;
    border: 3px solid #cbd5e1;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
    z-index: 20;
    text-align: left;
}

.phone-screen {
    background: #eef2f6;
    border-radius: 28px;
    height: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.phone-notch {
    width: 90px;
    height: 16px;
    background: #000000;
    border-radius: 0 0 12px 12px;
    margin: 0 auto;
    z-index: 2;
}

.phone-chat-top {
    background: #0068ff;
    padding: 8px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    font-size: 11px;
}

.phone-chat-top-avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fff;
    color: #0068ff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 10px;
}

.phone-chat-content {
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 11px;
    overflow-y: auto;
}

.phone-card-flight {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.phone-flight-route {
    font-weight: 700;
    color: #0f172a;
    font-size: 10.5px;
    margin-bottom: 4px;
}

.phone-flight-price {
    font-size: 13px;
    font-weight: 800;
    color: #0b57d0;
}

.phone-pill-buttons {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    margin-top: 6px;
}

.phone-pill-btn {
    background: #e0f2fe;
    color: #0284c7;
    font-size: 9.5px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
    border: 1px solid #bae6fd;
}

/* ==========================================================================
   WAVE DIVIDER (SMOOTH TRANSITION TO WHITE SECTION)
   ========================================================================== */
.fchat-wave-divider {
    position: relative;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    z-index: 1;
    margin-top: 20px;
}

.fchat-wave-divider svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 85px;
}

.fchat-wave-divider .shape-fill {
    fill: #ffffff;
}

/* ==========================================================================
   INTEGRATION CHANNELS / HÃNG BAY & NỀN TẢNG (FCHAT SERVICES ROW)
   ========================================================================== */
.fchat-platforms-section {
    padding: 50px 0 40px 0;
    background: #ffffff;
    text-align: center;
}

.section-fchat-head {
    max-width: 800px;
    margin: 0 auto 30px auto;
}

.section-fchat-title {
    font-size: 23px;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 8px;
    letter-spacing: -0.3px;
    line-height: 1.35;
}

.section-fchat-sub {
    font-size: 14px;
    color: var(--fchat-text-muted);
    line-height: 1.5;
    max-width: 680px;
    margin: 0 auto;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.platform-box {
    background: #f8fafc;
    border: 1px solid var(--fchat-border);
    border-radius: 12px;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.25s ease;
}

.platform-box:hover {
    transform: translateY(-3px);
    background: #ffffff;
    border-color: #cbd5e1;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
}

.platform-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.icon-vj { background: #fee2e2; color: #ef4444; }
.icon-vn { background: #ccfbf1; color: #0d9488; }
.icon-qh { background: #dcfce7; color: #16a34a; }
.icon-domestic { background: #ccfbf1; color: #0d9488; }
.icon-intl { background: #fee2e2; color: #e11d48; }
.icon-global { background: #e0e7ff; color: #2563eb; }
.icon-zalo { background: #e0f2fe; color: #0068ff; }
.icon-oa { background: #e0e7ff; color: #4338ca; }
.icon-crm { background: #fef3c7; color: #d97706; }
.icon-ai { background: #f3e8ff; color: #9333ea; }
.icon-bot { background: #dbeafe; color: #0284c7; }

.platform-box span {
    font-size: 13.5px;
    font-weight: 700;
    color: #1e293b;
    white-space: nowrap;
}

.platform-box small {
    font-size: 11px;
    color: #64748b;
    line-height: 1.3;
}

/* ==========================================================================
   FEATURES SECTION (FCHAT 6 TÍNH NĂNG VƯỢT TRỘI)
   ========================================================================== */
.fchat-features-section {
    padding: 48px 0;
    background: var(--fchat-bg-grey);
    border-top: 1px solid var(--fchat-border);
    border-bottom: 1px solid var(--fchat-border);
}

.features-fchat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-fchat-card {
    background: #ffffff;
    border: 1px solid var(--fchat-border);
    border-radius: 14px;
    padding: 22px 20px;
    transition: all 0.25s ease;
}

.feature-fchat-card:hover {
    transform: translateY(-3px);
    border-color: #cbd5e1;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

.feature-fchat-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: #eff6ff;
    color: var(--fchat-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    margin-bottom: 12px;
}

.feature-fchat-card h3 {
    font-size: 15.5px;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 6px;
    line-height: 1.35;
}

.feature-fchat-card p {
    font-size: 13px;
    color: var(--fchat-text-muted);
    line-height: 1.5;
}

/* ==========================================================================
   PRICING SECTION (BẢNG GIÁ PHẦN MỀM)
   ========================================================================== */
.fchat-pricing-section {
    padding: 50px 0 45px 0;
    background: #ffffff;
}

.pricing-grid-fchat {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1240px;
    margin: 0 auto;
}

.pricing-fchat-card {
    background: #ffffff;
    border: 1px solid var(--fchat-border);
    border-radius: 16px;
    padding: 22px 20px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.25s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}

.pricing-fchat-card.featured {
    border: 2px solid var(--fchat-blue);
    box-shadow: 0 12px 30px rgba(11, 87, 208, 0.1);
}

.pricing-fchat-card.trial-plan {
    border: 1.5px solid #10b981;
    background: linear-gradient(180deg, #f0fdf4 0%, #ffffff 40%);
}

.pricing-fchat-badge {
    position: absolute;
    top: -10px;
    right: 18px;
    background: var(--fchat-blue);
    color: #ffffff;
    font-size: 10.5px;
    font-weight: 800;
    padding: 3px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.pricing-fchat-badge.badge-trial {
    background: #10b981;
}

.pricing-fchat-card h3 {
    font-size: 18px;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 4px;
}

.pricing-fchat-card p.sub {
    font-size: 12.5px;
    color: var(--fchat-text-muted);
    margin-bottom: 14px;
    line-height: 1.4;
}

.pricing-fchat-cost {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.cost-num {
    font-size: 32px;
    font-weight: 900;
    color: #0f172a;
    line-height: 1;
}

.cost-unit {
    font-size: 12.5px;
    color: var(--fchat-text-muted);
}

.pricing-fchat-list {
    list-style: none;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pricing-fchat-list li {
    font-size: 12.5px;
    color: #334155;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.4;
}

.pricing-fchat-list li i {
    color: var(--fchat-green);
    font-size: 12px;
    margin-top: 2px;
    flex-shrink: 0;
}

.btn-pricing-fchat {
    display: block;
    text-align: center;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.25s;
}

.btn-pricing-blue {
    background: var(--fchat-blue);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(11, 87, 208, 0.25);
}

.btn-pricing-blue:hover {
    background: var(--fchat-blue-dark);
    transform: translateY(-1px);
}

.btn-pricing-outline {
    background: #f8fafc;
    color: #1e293b;
    border: 1px solid var(--fchat-border);
}

.btn-pricing-outline:hover {
    background: #f1f5f9;
}

/* ==========================================================================
   FOOTER (CLEAN, WHITE-LABEL, NO PHONE, NO ADDRESS)
   ========================================================================== */
.fchat-footer {
    background: #f8fafc;
    border-top: 1px solid var(--fchat-border);
    padding: 45px 0 25px 0;
}

.footer-fchat-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-brand p {
    font-size: 13px;
    color: var(--fchat-text-muted);
    margin-top: 10px;
    line-height: 1.5;
    max-width: 360px;
}

.footer-title {
    font-size: 13.5px;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links a {
    color: var(--fchat-text-muted);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--fchat-blue);
}

.footer-bottom {
    border-top: 1px solid var(--fchat-border);
    padding-top: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--fchat-text-muted);
    flex-wrap: wrap;
    gap: 10px;
}

/* ==========================================================================
   BOOKER COMMAND SPOTLIGHT (GÕ LỆNH BÁO GIÁ ZALO CÁ NHÂN KHI ĐANG CHAT)
   ========================================================================== */
.booker-command-section {
    padding: 85px 0;
    background: #ffffff;
    border-bottom: 1px solid var(--fchat-border);
}

.command-showcase-grid {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 45px;
    align-items: center;
}

.command-badge-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #e0f2fe;
    color: #0284c7;
    font-size: 12.5px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.command-title {
    font-size: 32px;
    font-weight: 800;
    color: #0f172a;
    line-height: 1.35;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.command-desc {
    font-size: 16px;
    color: var(--fchat-text-muted);
    line-height: 1.65;
    margin-bottom: 24px;
}

.command-steps-flow {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.flow-step-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.flow-step-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--fchat-blue);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 14px;
    flex-shrink: 0;
    margin-top: 2px;
}

.flow-step-item h4 {
    font-size: 16px;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 4px;
}

.flow-step-item p {
    font-size: 14px;
    color: var(--fchat-text-muted);
    margin: 0;
    line-height: 1.5;
}

.flow-step-item code {
    background: #f1f5f9;
    color: var(--fchat-blue);
    padding: 2px 7px;
    border-radius: 4px;
    font-family: monospace;
    font-weight: 700;
    font-size: 13.5px;
}

/* Realistic Zalo Chat Simulator Card */
.zalo-chat-card-real {
    background: #e4e8ec;
    border: 1px solid #cbd5e1;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.zalo-chat-header-real {
    background: #0068ff;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
}

.zalo-real-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #fff;
    color: #0068ff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 14px;
}

.zalo-chat-body-real {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    font-size: 13.5px;
}

.chat-bubble-guest {
    align-self: flex-start;
    background: #ffffff;
    color: #1e293b;
    padding: 10px 14px;
    border-radius: 14px 14px 14px 0;
    max-width: 85%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.chat-bubble-command {
    align-self: flex-end;
    background: #0068ff;
    color: #ffffff;
    padding: 8px 14px;
    border-radius: 14px 14px 0 14px;
    font-family: monospace;
    font-weight: 800;
    font-size: 14px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    letter-spacing: 0.5px;
}

.chat-bubble-bot-reply {
    align-self: flex-end;
    background: #ffffff;
    border: 1.5px solid #0068ff;
    color: #0f172a;
    padding: 14px 16px;
    border-radius: 14px 14px 0 14px;
    max-width: 95%;
    line-height: 1.6;
    box-shadow: 0 2px 8px rgba(0, 104, 255, 0.12);
}

/* ==========================================================================
   AUTH MODAL POPUP (NO PAGE REDIRECT)
   ========================================================================== */
.auth-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(6px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.2s ease-out;
}

.auth-modal-card {
    background: #ffffff;
    border-radius: 20px;
    width: 100%;
    max-width: 460px;
    padding: 32px 30px;
    position: relative;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
    animation: slideUp 0.25s ease-out;
}

.auth-modal-close {
    position: absolute;
    top: 18px;
    right: 20px;
    background: #f1f5f9;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #64748b;
    cursor: pointer;
    transition: all 0.2s;
    line-height: 1;
}

.auth-modal-close:hover {
    background: #e2e8f0;
    color: #0f172a;
}

.auth-tabs {
    display: flex;
    gap: 8px;
    background: #f1f5f9;
    padding: 4px;
    border-radius: 10px;
    margin-bottom: 24px;
}

.auth-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    padding: 10px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 700;
    color: #64748b;
    cursor: pointer;
    transition: all 0.2s;
}

.auth-tab-btn.active {
    background: #ffffff;
    color: var(--fchat-blue);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.auth-field {
    margin-bottom: 16px;
    text-align: left;
}

.auth-field label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: #334155;
    margin-bottom: 6px;
}

.auth-field input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-size: 14px;
    color: #0f172a;
    outline: none;
    transition: border-color 0.2s;
}

.auth-field input:focus {
    border-color: var(--fchat-blue);
    box-shadow: 0 0 0 3px rgba(11, 87, 208, 0.1);
}

.btn-auth-submit {
    width: 100%;
    background: var(--fchat-blue);
    color: #ffffff;
    border: none;
    padding: 13px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 8px;
}

.btn-auth-submit:hover {
    background: var(--fchat-blue-dark);
}

.btn-auth-submit:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.btn-trial-submit {
    background: var(--fchat-green);
}

.btn-trial-submit:hover {
    background: #059669;
}

.auth-modal-alert {
    padding: 11px 14px;
    border-radius: 8px;
    font-size: 13.5px;
    line-height: 1.45;
    margin-bottom: 16px;
    text-align: left;
    display: none;
    animation: fadeIn 0.2s ease;
}

.auth-modal-alert.error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    display: block;
}

.auth-modal-alert.success {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #047857;
    display: block;
}

.hero-pricing-note {
    margin-top: 18px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 8px 18px;
    border-radius: 30px;
    color: #ffffff;
    font-size: 14px;
    backdrop-filter: blur(8px);
}

.pricing-highlight-banner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #eff6ff;
    color: var(--fchat-blue);
    border: 1px solid #bfdbfe;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13.5px;
    font-weight: 700;
    margin-bottom: 14px;
}

.pricing-floor-tag {
    display: inline-block;
    background: #fee2e2;
    color: #b91c1c;
    font-size: 11px;
    font-weight: 800;
    padding: 3px 8px;
    border-radius: 6px;
    margin-left: 6px;
    vertical-align: middle;
    text-transform: uppercase;
}

.auth-switch-text {
    text-align: center;
    font-size: 13px;
    color: #64748b;
    margin-top: 18px;
    margin-bottom: 0;
}

.auth-switch-text a {
    color: var(--fchat-blue);
    font-weight: 700;
    text-decoration: none;
}

.auth-switch-text a:hover {
    text-decoration: underline;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(15px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.btn-zalo-top {
    background: #0068ff !important;
    color: #ffffff !important;
    font-weight: 700;
    border: none !important;
    display: inline-flex !important;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(0, 104, 255, 0.35);
    transition: all 0.2s ease;
}

.btn-zalo-top:hover {
    background: #0052cc !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 104, 255, 0.45);
}

.btn-zalo-hero {
    background: #0068ff !important;
    color: #ffffff !important;
    box-shadow: 0 8px 25px rgba(0, 104, 255, 0.45) !important;
}

.btn-zalo-hero:hover {
    background: #0052cc !important;
    transform: translateY(-3px) scale(1.02);
}

.btn-pricing-zalo {
    background: #0068ff !important;
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(0, 104, 255, 0.3) !important;
}

.btn-pricing-zalo:hover {
    background: #0052cc !important;
}

/* Dual Mode Section (AI Chat 24/7 vs Booker Command) */
.dual-mode-section {
    padding: 55px 0 50px 0;
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
}

.dual-mode-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 24px;
}

.dual-mode-card {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 16px;
    padding: 22px 20px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.25s, box-shadow 0.25s;
}

.dual-mode-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.07);
}

.dual-mode-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    padding: 3px 10px;
    border-radius: 20px;
    margin-bottom: 10px;
}

.badge-ai-auto {
    background: #e0f2fe;
    color: #0284c7;
}

.badge-booker-cmd {
    background: #fef3c7;
    color: #b45309;
}

.dual-mode-title {
    font-size: 16.5px;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 8px;
    line-height: 1.35;
}

.dual-mode-desc {
    font-size: 13px;
    color: var(--fchat-text-muted);
    line-height: 1.55;
    margin-bottom: 16px;
}

.modal-zalo-info {
    margin-top: 20px;
    padding: 14px 16px;
    background: #f0f7ff;
    border: 1px solid #bae6fd;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
    font-size: 13.5px;
    color: #1e293b;
    line-height: 1.5;
}

/* Floating Zalo Widget */
.floating-zalo-btn {
    position: fixed;
    bottom: 25px;
    right: 25px;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 10px;
    background: #ffffff;
    border: 2px solid #0068ff;
    padding: 8px 18px 8px 10px;
    border-radius: 40px;
    box-shadow: 0 10px 30px rgba(0, 104, 255, 0.35);
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: pulseZalo 2.5s infinite;
}

.floating-zalo-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 15px 35px rgba(0, 104, 255, 0.45);
}

.floating-zalo-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #0068ff;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.floating-zalo-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.floating-zalo-text span {
    font-size: 11.5px;
    color: #64748b;
    font-weight: 500;
}

.floating-zalo-text strong {
    font-size: 16px;
    color: #0068ff;
    font-weight: 800;
    line-height: 1.1;
}

@keyframes pulseZalo {
    0% { box-shadow: 0 0 0 0 rgba(0, 104, 255, 0.5); }
    70% { box-shadow: 0 0 0 14px rgba(0, 104, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 104, 255, 0); }
}

/* ==========================================================================
   RESPONSIVE QUERIES
   ========================================================================== */
@media (max-width: 992px) {
    .hero-main-title {
        font-size: 32px;
    }
    .hero-lead-text {
        font-size: 17px;
    }
    .command-showcase-grid {
        grid-template-columns: 1fr;
    }
    .dual-mode-grid {
        grid-template-columns: 1fr;
    }
    .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .features-fchat-grid {
        grid-template-columns: 1fr;
    }
    .pricing-grid-fchat {
        grid-template-columns: 1fr;
    }
    .footer-fchat-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .fchat-nav-links {
        display: none;
    }
    .hero-main-title {
        font-size: 26px;
    }
    .hero-lead-text {
        font-size: 15px;
    }
    .floating-zalo-text {
        display: none;
    }
    .floating-zalo-btn {
        padding: 6px;
        border-radius: 50%;
        bottom: 20px;
        right: 20px;
    }
}