/* ============================================
   GOOGLE FONTS - Be Vietnam Pro + Inter
   Hỗ trợ đầy đủ ký tự Tiếng Việt Unicode
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,400&family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ============================================
   DESIGN TOKENS (CSS CUSTOM PROPERTIES)
   ============================================ */
:root {
    /* Brand Colors */
    --primary: #0F172A;
    --primary-light: #1E293B;
    --secondary: #2563EB;
    --secondary-hover: #1D4ED8;
    --secondary-light: #DBEAFE;
    --accent: #22C55E;
    --accent-light: #DCFCE7;
    --danger: #EF4444;
    --warning: #F59E0B;

    /* Neutral Palette */
    --bg-page: #F8FAFC;
    --bg-section-alt: #EFF6FF;
    --bg-white: #FFFFFF;
    --text-dark: #0F172A;
    --text-body: #334155;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    --border: #E2E8F0;
    --border-focus: #93C5FD;

    /* Typography */
    --font-heading: 'Be Vietnam Pro', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing (8px grid) */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 60px;
    --space-2xl: 90px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-pill: 999px;

    /* Shadows */
    --shadow-xs: 0 1px 3px rgba(15, 23, 42, 0.05), 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
    --shadow-xl: 0 25px 50px -12px rgba(15, 23, 42, 0.18);
    --shadow-glow: 0 0 0 4px rgba(37, 99, 235, 0.15);

    /* Transitions */
    --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --duration-fast: 150ms;
    --duration-base: 250ms;
    --duration-slow: 400ms;
}

/* ============================================
   BASE RESET & GLOBAL STYLES
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.75;
    color: var(--text-body);
    background-color: var(--bg-page);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Heading System */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-dark);
    letter-spacing: -0.02em;
    margin-bottom: 0;
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

h4 {
    font-size: 1.125rem;
}

p {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--text-body);
    margin-bottom: 0;
}

a {
    color: var(--secondary);
    text-decoration: none;
    transition: color var(--duration-base) var(--ease-out);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   CUSTOM SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-page);
}

::-webkit-scrollbar-thumb {
    background: #CBD5E1;
    border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
    background: #94A3B8;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.section-padding {
    padding: var(--space-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-label {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--secondary);
    background: var(--secondary-light);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    margin-bottom: 14px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: var(--space-sm);
}

.section-divider {
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), #60A5FA);
    border-radius: var(--radius-pill);
    margin: 0 auto;
}

/* Color Utilities */
.text-gradient {
    background: linear-gradient(135deg, var(--secondary) 0%, #60A5FA 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-hover) 100%);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn-primary-custom {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-hover) 100%);
    color: #FFFFFF;
    border: none;
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
    cursor: pointer;
    transition: all var(--duration-base) var(--ease-spring);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
    color: #FFFFFF;
}

.btn-primary-custom:active {
    transform: translateY(0);
}

.btn-outline-custom {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--text-dark);
    border: 1.5px solid var(--border);
    padding: 13px 28px;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-base) var(--ease-spring);
    text-decoration: none;
    white-space: nowrap;
}

.btn-outline-custom:hover {
    border-color: var(--secondary);
    color: var(--secondary);
    background: rgba(37, 99, 235, 0.04);
    transform: translateY(-2px);
}

/* ============================================
   ANIMATIONS / KEYFRAMES
   ============================================ */
@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(-0.5deg);
    }

    50% {
        transform: translateY(-18px) rotate(0.5deg);
    }
}

@keyframes logoLoop {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(calc(-200px * 8));
    }
}

@keyframes shake {

    0%,
    90%,
    100% {
        transform: scale(1) rotate(0deg);
    }

    92%,
    96% {
        transform: scale(1.1) rotate(-10deg);
    }

    94%,
    98% {
        transform: scale(1.1) rotate(10deg);
    }
}

@keyframes pulse-ring {
    0% {
        transform: scale(0.9);
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5);
    }

    70% {
        transform: scale(1);
        box-shadow: 0 0 0 12px rgba(239, 68, 68, 0);
    }

    100% {
        transform: scale(0.9);
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(120%);
        opacity: 0;
    }

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

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(120%);
        opacity: 0;
    }
}

@keyframes fadeInUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

.floating-img {
    animation: float 7s ease-in-out infinite;
    will-change: transform;
    border-radius: 20px;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar-custom {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    transition: all var(--duration-base) var(--ease-out);
    padding-top: 10px;
    padding-bottom: 10px;
}

.navbar-custom .navbar-brand span {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.375rem;
    letter-spacing: -0.03em;
    color: var(--text-dark);
}

.navbar-custom .nav-link {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-body) !important;
    padding: 6px 4px !important;
    transition: color var(--duration-fast) var(--ease-out);
}

.navbar-custom .nav-link:hover {
    color: var(--secondary) !important;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    padding: 100px 0 90px;
    background:
        radial-gradient(ellipse at 75% 15%, rgba(37, 99, 235, 0.06) 0%, transparent 55%),
        radial-gradient(ellipse at 20% 80%, rgba(34, 197, 94, 0.04) 0%, transparent 50%);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 8px 18px;
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-body);
    margin-bottom: 24px;
    box-shadow: var(--shadow-xs);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.1rem, 5vw, 3.2rem);
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    font-weight: 600;
    color: var(--text-body);
    line-height: 1.5;
    margin-bottom: 20px;
}

.hero-description {
    font-family: var(--font-body);
    font-size: 1.0625rem;
    font-weight: 400;
    line-height: 1.8;
    color: var(--text-muted);
    max-width: 520px;
    margin-bottom: 32px;
}

/* Trust Badges */
.trust-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 28px;
    max-width: 420px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-dark);
}

.trust-item i {
    color: var(--accent);
    font-size: 1rem;
    flex-shrink: 0;
}

/* ============================================
   COMMITMENT SECTION
   ============================================ */
.commitment-section {
    background: var(--bg-section-alt);
    padding: var(--space-2xl) 0;
}

.card-feature {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-xs);
    transition: all var(--duration-slow) var(--ease-spring);
    height: 100%;
    position: relative;
    overflow: hidden;
}

.card-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), #60A5FA);
    transform: scaleX(0);
    transition: transform var(--duration-base) var(--ease-out);
}

.card-feature:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.card-feature:hover::before {
    transform: scaleX(1);
}

.card-feature-icon {
    width: 64px;
    height: 64px;
    background: var(--secondary-light);
    color: var(--secondary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 20px;
    transition: all var(--duration-base) var(--ease-spring);
}

.card-feature:hover .card-feature-icon {
    background: var(--secondary);
    color: #FFF;
    transform: scale(1.1) rotate(-5deg);
}

.card-feature h4 {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.card-feature p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ============================================
   PHONE / LAPTOP CATEGORIES
   ============================================ */
.categories-section {
    padding: var(--space-2xl) 0;
    background: var(--bg-white);
}

.device-card {
    background: var(--bg-white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 20px 22px;
    text-align: center;
    box-shadow: var(--shadow-xs);
    transition: all var(--duration-slow) var(--ease-spring);
    height: 100%;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.device-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    border: 2px solid var(--secondary);
    opacity: 0;
    transition: opacity var(--duration-base) var(--ease-out);
}

.device-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.device-card:hover::after {
    opacity: 1;
}

.device-card-icon {
    height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    transition: transform var(--duration-base) var(--ease-spring);
}

.device-card:hover .device-card-icon {
    transform: scale(1.08) translateY(-4px);
}

.device-card h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.device-card p {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 14px;
    line-height: 1.5;
}

.link-detail {
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap var(--duration-fast) var(--ease-out);
}

.link-detail:hover {
    gap: 10px;
    color: var(--secondary-hover);
}

/* Mobile Swiper for categories */
.swiper-categories {
    padding-bottom: 30px !important;
}

.swiper-categories .swiper-pagination-bullet {
    background: var(--secondary);
}

/* ============================================
   PROCESS TIMELINE (3 STEPS)
   ============================================ */
.process-section {
    padding: 100px 0;
    background: linear-gradient(180deg,
            #f8fbff 0%,
            #eef5ff 100%);
}

.process-horizontal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-top: 60px;
}

.process-item {
    flex: 1;
    max-width: 360px;
    background: #fff;
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
    position: relative;
    border: 1px solid #e5edf9;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .06);
    transition: all .35s ease;
}

.process-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(37, 99, 235, .15);
    border-color: var(--secondary);
}

.process-number {
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    min-width: 60px;
    height: 36px;
    padding: 0 16px;
    border-radius: 999px;
    background: linear-gradient(135deg,
            var(--secondary),
            var(--secondary-hover));
    color: #fff;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 20px rgba(37, 99, 235, .3);
}

.process-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: rgba(37, 99, 235, .08);
    color: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
}

.process-item h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.process-item p {
    color: var(--text-muted);
    line-height: 1.8;
    margin: 0;
}

.process-arrow {
    color: var(--secondary);
    font-size: 30px;
    flex-shrink: 0;
    opacity: .6;
}

/* ============================================
   WHY CHOOSE US
   ============================================ */
.why-section {
    padding: var(--space-2xl) 0;
    background: var(--bg-white);
}

.why-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    box-shadow: var(--shadow-xs);
    transition: all var(--duration-slow) var(--ease-spring);
    height: 100%;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.why-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--secondary-light);
}

.why-icon-wrap {
    width: 52px;
    height: 52px;
    background: var(--secondary-light);
    color: var(--secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
    transition: all var(--duration-base) var(--ease-spring);
}

.why-card:hover .why-icon-wrap {
    background: var(--secondary);
    color: #FFF;
    transform: rotate(-8deg) scale(1.05);
}

.why-card h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-dark);
}

.why-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ============================================
   REVIEWS / TESTIMONIALS
   ============================================ */
.reviews-section {
    padding: var(--space-2xl) 0;
    background: var(--bg-section-alt);
}

.review-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.review-stars {
    color: var(--warning);
    font-size: 0.875rem;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.review-quote {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    line-height: 1.75;
    color: var(--text-body);
    font-style: italic;
    flex: 1;
    margin-bottom: 24px;
    position: relative;
    padding-left: 20px;
}

.review-quote::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -4px;
    font-size: 2.5rem;
    line-height: 1;
    color: var(--secondary-light);
    font-family: Georgia, serif;
    font-style: normal;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 14px;
    border-top: 1px solid var(--border);
    padding-top: 18px;
}

.review-avatar {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--secondary-light);
    flex-shrink: 0;
}

.review-name {
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2px;
}

.review-device {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.swiper-reviews .swiper-pagination-bullet-active {
    background: var(--secondary);
}

/* ============================================
   BRANDS TICKER
   ============================================ */
.brands-section {
    padding: 50px 0;
    background: var(--bg-white);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}

.brands-track-wrap {
    display: flex;
    overflow: hidden;
    user-select: none;
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 15%, #000 85%, transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0%, #000 15%, #000 85%, transparent 100%);
}

.brands-track {
    display: flex;
    width: max-content;
    animation: logoLoop 28s linear infinite;
    align-items: center;
}

.brands-track:hover {
    animation-play-state: paused;
}

.brand-item {
    width: 180px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
}

.brand-item i,
.brand-item span {
    opacity: 0.4;
    transition: all var(--duration-base) var(--ease-out);
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: -0.02em;
}

.brand-item:hover i,
.brand-item:hover span {
    opacity: 1;
    transform: scale(1.1);
}

/* ============================================
   FAQ ACCORDION
   ============================================ */
.faq-section {
    padding: var(--space-2xl) 0;
    background: var(--bg-page);
}

.faq-accordion .accordion-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg) !important;
    margin-bottom: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-xs);
    transition: border-color var(--duration-base) var(--ease-out),
        box-shadow var(--duration-base) var(--ease-out);
}

.faq-accordion .accordion-item:hover {
    border-color: #93C5FD;
    box-shadow: var(--shadow-sm);
}

.faq-accordion .accordion-button {
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-dark);
    background: var(--bg-white);
    padding: 20px 22px;
    box-shadow: none !important;
    letter-spacing: -0.01em;
    line-height: 1.5;
}

.faq-accordion .accordion-button:not(.collapsed) {
    color: var(--secondary);
    background: rgba(37, 99, 235, 0.02);
}

.faq-accordion .accordion-button::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232563EB'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    width: 1.1rem;
    height: 1.1rem;
    background-size: 1.1rem;
    transition: transform var(--duration-base) var(--ease-out);
}

.faq-accordion .accordion-button.collapsed::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2364748B'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.faq-accordion .accordion-body {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    line-height: 1.75;
    color: var(--text-body);
    background: var(--bg-white);
    padding: 6px 22px 22px;
    border-top: 1px solid var(--border);
}

/* ============================================
   FOOTER FORM (CONVERSION FORM)
   ============================================ */
.footer-form-section {
    padding: var(--space-2xl) 0;
    background: linear-gradient(180deg, var(--bg-section-alt) 0%, var(--bg-white) 100%);
}

.form-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.form-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), #60A5FA, var(--accent));
}

.form-card-title {
    font-family: var(--font-heading);
    font-size: clamp(1.4rem, 3vw, 1.875rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 6px;
}

.form-label-custom {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    display: block;
}

.form-control-custom,
.form-select-custom {
    width: 100%;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--text-dark);
    background: var(--bg-white);
    appearance: none;
    -webkit-appearance: none;
    transition: border-color var(--duration-fast) var(--ease-out),
        box-shadow var(--duration-fast) var(--ease-out);
    line-height: 1.5;
}

.form-control-custom:focus,
.form-select-custom:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: var(--shadow-glow);
}

.form-control-custom::placeholder {
    color: var(--text-light);
    font-weight: 400;
}

/* Select arrow */
.select-wrap {
    position: relative;
}

.select-wrap::after {
    content: '';
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid var(--text-muted);
    pointer-events: none;
}

/* Drag Drop Upload */
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    text-align: center;
    background: var(--bg-page);
    cursor: pointer;
    transition: all var(--duration-base) var(--ease-out);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--secondary);
    background: rgba(37, 99, 235, 0.02);
}

.upload-zone i {
    font-size: 2rem;
    color: var(--text-light);
    margin-bottom: 10px;
    display: block;
}

.upload-preview-wrap {
    display: none;
    margin-top: 14px;
    position: relative;
    display: inline-block;
}

.upload-preview-img {
    max-width: 100px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.upload-remove-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 22px;
    height: 22px;
    background: var(--danger);
    color: #FFF;
    border: 2px solid var(--bg-white);
    border-radius: 50%;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    line-height: 1;
}

/* ============================================
   FOOTER
   ============================================ */
.footer-section {
    background: var(--primary);
    color: #94A3B8;
    padding: 80px 0 32px;
    font-size: 0.9rem;
}

.footer-brand-name {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.375rem;
    letter-spacing: -0.03em;
    color: #FFF;
}

.footer-desc {
    font-size: 0.875rem;
    line-height: 1.75;
    color: #94A3B8;
    margin-top: 14px;
    margin-bottom: 20px;
}

.footer-heading {
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 700;
    color: #FFF;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-heading::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 32px;
    height: 2px;
    background: var(--secondary);
    border-radius: var(--radius-pill);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 10px;
    display: flex;
    gap: 10px;
}

.footer-links a {
    color: #94A3B8;
    font-size: 0.875rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--duration-fast) var(--ease-out);
}

.footer-links i.fa-solid {
    padding-top: 7px;
}

.footer-links a:hover {
    color: #FFF;
    padding-left: 4px;
}

.social-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.social-btn {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.06);
    color: #94A3B8;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--duration-base) var(--ease-spring);
}

.social-btn:hover {
    background: var(--secondary);
    color: #FFF;
    transform: translateY(-3px);
}

.footer-divider {
    margin-top: 60px;
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.footer-copy {
    font-size: 0.8125rem;
    color: #64748B;
    margin: 0;
}

/* ============================================
   STICKY DESKTOP FLOATING ACTIONS
   ============================================ */
.sticky-desktop-actions {
    position: fixed;
    right: 24px;
    bottom: 30px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.fab {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #FFF;
    text-decoration: none;
    box-shadow: var(--shadow-lg);
    transition: all var(--duration-base) var(--ease-spring);
    position: relative;
}

.fab:hover {
    transform: scale(1.15) translateY(-2px);
    color: #FFF;
}

.fab-tooltip {
    position: absolute;
    right: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary);
    color: #FFF;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-fast) var(--ease-out);
}

.fab-tooltip::after {
    content: '';
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 5px solid transparent;
    border-left-color: var(--primary);
}

.fab:hover .fab-tooltip {
    opacity: 1;
}

.fab-zalo {
    background: #0068FF;
}

.fab-messenger {
    background: linear-gradient(135deg, #9B59B6, #3498DB);
}

.fab-call {
    background: var(--danger);
    animation: pulse-ring 2.5s infinite;
}

/* ============================================
   STICKY MOBILE BOTTOM CTA
   ============================================ */
.sticky-mobile-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--border);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.07);
    padding: 10px 0;
    display: none;
}

.mobile-cta-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    font-family: var(--font-body);
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--text-dark);
    transition: color var(--duration-fast) var(--ease-out);
}

.mobile-cta-btn i {
    font-size: 1.3rem;
}

.mobile-cta-btn.btn-call {
    color: var(--danger);
}

.mobile-cta-btn.btn-messenger {
    color: #8B5CF6;
}

.mobile-cta-btn.btn-zalo {
    color: #0068FF;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-custom {
    position: fixed;
    top: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 22px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    z-index: 99999;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9375rem;
    color: #FFF;
    max-width: 420px;
    animation: slideInRight var(--duration-base) var(--ease-spring) forwards;
}

.toast-custom.toast-success {
    background: var(--accent);
}

.toast-custom.toast-error {
    background: var(--danger);
}

/* ============================================
   THANK YOU PAGE
   ============================================ */
.ty-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(ellipse at 30% 70%, rgba(34, 197, 94, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 20%, rgba(37, 99, 235, 0.06) 0%, transparent 50%),
        var(--bg-page);
}

.ty-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    padding: 56px 48px;
    text-align: center;
    box-shadow: var(--shadow-xl);
    max-width: 580px;
    width: 100%;
    animation: fadeInUp 0.5s var(--ease-spring) both;
    border: 1px solid var(--border);
}

.ty-check {
    width: 80px;
    height: 80px;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.25rem;
    margin: 0 auto 28px;
}

.ty-title {
    font-family: var(--font-heading);
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-dark);
    margin-bottom: 14px;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1199.98px) {
    :root {
        --space-2xl: 80px;
    }
}

@media (max-width: 991.98px) {
    :root {
        --space-2xl: 70px;
    }

    .hero-section {
        padding: 110px 0 70px;
        text-align: center;
    }

    .trust-grid {
        margin: 28px auto 0;
        max-width: 100%;
        justify-items: center;
    }

    .hero-description {
        max-width: 100%;
    }

    /* Hide desktop sticky on tablet/mobile */
    .sticky-desktop-actions {
        display: none;
    }

    /* Desktop timeline hidden on mobile */
    .timeline-wrapper {
        display: none;
    }
}

@media (max-width: 767.98px) {
    :root {
        --space-2xl: 60px;
    }

    .sticky-mobile-cta {
        display: block;
    }

    body {
        padding-bottom: 68px;
    }

    .form-card {
        padding: 28px 20px;
    }

    .ty-card {
        padding: 36px 24px;
    }

    .ty-title {
        font-size: 1.5rem;
    }

    .navbar-custom .navbar-brand span {
        font-size: 1.2rem;
    }
}

@media (max-width: 575.98px) {
    .hero-title {
        font-size: 1.85rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .trust-grid {
        grid-template-columns: 1fr;
        max-width: 280px;
    }
}