/* ==========================================================================
   HỆ SINH THÁI 4 NHÃN SƠN NANO - MASTER STYLESHEET & BRAND ANIMATION ENGINE
   1. MUTSUTEC Nano  (#003399 | #0284c7 | #38bdf8) - Tech Wave & Blue Glow
   2. Nano Moivn VA  (#C82829 | #8B1A1A | #F5C518) - Royal Gold Star & Sweep
   3. CN NANO10*     (#0022FF | #EE2B2B | Rainbow) - Star Trail & Japanese Colors
   4. TDKAW Nano     (#F26522 | #0018F0 | #1e293b) - Industrial Geometry & Block
   ========================================================================== */

@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;1,400&family=Montserrat:wght@600;700;800;900&display=swap');

:root {
    --brand-primary: #003399;
    --brand-secondary: #0284c7;
    --brand-accent: #38bdf8;
    --brand-bg-light: #f4f8ff;
    --brand-gradient: linear-gradient(135deg, #002266 0%, #003399 55%, #0284c7 100%);
    --rainbow-spectrum: linear-gradient(90deg, #EF4136 0%, #FBB040 25%, #8DC63F 50%, #00A651 75%, #00AEEF 100%);
    --text-dark: #0f172a;
    --text-body: #334155;
    --text-muted: #64748b;
    --surface-white: #ffffff;
    --surface-gray: #f8fafc;
    --border-light: #e2e8f0;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    --shadow-sm: 0 4px 16px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 22px 48px rgba(15, 23, 42, 0.14);
    --transition-smooth: all 0.38s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==================== 4 BỘ THEME RIÊNG THEO TỪNG NHÃN SƠN ==================== */
body.theme-mutsutec-nano,
.brand-scope-mutsutec-nano {
    --brand-primary: #003399;
    --brand-secondary: #0284c7;
    --brand-accent: #38bdf8;
    --brand-bg-light: #f0f7ff;
    --brand-gradient: linear-gradient(135deg, #001a5c 0%, #003399 55%, #0284c7 100%);
}

body.theme-nano-moivn-va,
.brand-scope-nano-moivn-va {
    --brand-primary: #C82829;
    --brand-secondary: #8B1A1A;
    --brand-accent: #F5C518;
    --brand-bg-light: #fff5f5;
    --brand-gradient: linear-gradient(135deg, #6e0f12 0%, #C82829 60%, #e03e2d 100%);
}

body.theme-cn-nano10,
.brand-scope-cn-nano10 {
    --brand-primary: #0022FF;
    --brand-secondary: #EE2B2B;
    --brand-accent: #00AEEF;
    --brand-bg-light: #f4f7ff;
    --brand-gradient: linear-gradient(135deg, #001299 0%, #0022FF 55%, #0077ff 100%);
}

body.theme-tdkaw-nano,
.brand-scope-tdkaw-nano {
    --brand-primary: #F26522;
    --brand-secondary: #0018F0;
    --brand-accent: #ff8547;
    --brand-bg-light: #fff8f3;
    --brand-gradient: linear-gradient(135deg, #0f172a 0%, #0018b8 48%, #F26522 100%);
}

/* ==================== RESET & TYPOGRAPHY ==================== */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-body);
    background-color: var(--surface-white);
    line-height: 1.65;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: 'Montserrat', 'Be Vietnam Pro', sans-serif;
    color: var(--text-dark);
    font-weight: 800;
    letter-spacing: -0.02em;
}

a {
    text-decoration: none;
    transition: var(--transition-smooth);
}

/* ==================== TOPBAR & STICKY HEADER ==================== */
.topbar-ecosystem {
    background: #0b132b;
    color: rgba(255, 255, 255, 0.88);
    font-size: 0.82rem;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar-brand-pills {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.topbar-brand-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #fff;
    background: rgba(255, 255, 255, 0.09);
    border: 1px solid rgba(255, 255, 255, 0.14);
}

.topbar-brand-pill:hover,
.topbar-brand-pill.active {
    background: var(--pill-color, var(--brand-primary));
    border-color: transparent;
    color: #fff;
    transform: translateY(-1px);
}

.topbar-brand-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(15, 23, 42, 0.07);
    transition: var(--transition-smooth);
}

.site-header.scrolled {
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.navbar-brand-cluster {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo-main {
    height: 46px;
    width: auto;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.brand-logo-main:hover {
    transform: scale(1.04);
}

.site-brand-title {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.site-brand-title strong {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.02rem;
    font-weight: 800;
    color: var(--brand-primary);
    letter-spacing: -0.02em;
}

.site-brand-title span {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 500;
}

.nav-link-custom {
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--text-dark) !important;
    padding: 0.55rem 0.9rem !important;
    border-radius: 10px;
    position: relative;
}

.nav-link-custom:hover,
.nav-link-custom.active {
    color: var(--brand-primary) !important;
    background: var(--brand-bg-light);
}

.brand-dropdown-menu {
    min-width: 310px;
    padding: 12px;
    border: 1px solid var(--border-light);
    border-radius: 18px;
    box-shadow: var(--shadow-lg);
}

.brand-dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    transition: var(--transition-smooth);
}

.brand-dropdown-item:hover {
    background: var(--surface-gray);
    transform: translateX(4px);
}

.brand-dropdown-item img {
    width: 68px;
    height: 36px;
    object-fit: contain;
    background: #fff;
    padding: 3px;
    border-radius: 6px;
    border: 1px solid var(--border-light);
}

/* ==================== BUTTONS & SHINE EFFECTS ==================== */
.btn-brand {
    background: var(--brand-primary);
    color: #fff !important;
    font-weight: 700;
    padding: 11px 24px;
    border-radius: 50px;
    border: none;
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 8px 22px rgba(0, 51, 153, 0.22);
    transition: var(--transition-smooth);
}

.btn-brand::after {
    content: '';
    position: absolute;
    top: 0;
    left: -120%;
    width: 70%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
    transform: skewX(-25deg);
    transition: left 0.65s ease;
}

.btn-brand:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
    filter: brightness(1.06);
}

.btn-brand:hover::after {
    left: 140%;
}

.btn-outline-brand {
    border: 2px solid var(--brand-primary);
    color: var(--brand-primary) !important;
    background: transparent;
    font-weight: 700;
    padding: 9px 22px;
    border-radius: 50px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.btn-outline-brand:hover {
    background: var(--brand-primary);
    color: #fff !important;
    transform: translateY(-2px);
}

/* ==================== HERO SLIDER & BRAND ANIMATION LAYERS ==================== */
.hero-ecosystem-slider {
    position: relative;
    overflow: hidden;
    background: #070d1f;
}

.hero-slide-item {
    position: relative;
    min-height: 620px;
    display: flex;
    align-items: center;
    padding: 80px 0;
    color: #fff;
    overflow: hidden;
}

.hero-slide-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.26;
    transform: scale(1.04);
    transition: transform 6s ease;
}

.swiper-slide-active .hero-slide-bg {
    transform: scale(1);
}

.hero-slide-overlay {
    position: absolute;
    inset: 0;
    background: var(--brand-gradient);
    opacity: 0.88;
}

/* Hiệu ứng riêng cho từng thương hiệu trên Hero */
/* 1. MUTSUTEC Nano: Tech Wave & Blue Glow */
.hero-anim-tech-wave::before {
    content: '';
    position: absolute;
    inset: -50%;
    background: radial-gradient(circle at 30% 40%, rgba(56, 189, 248, 0.28), transparent 45%),
                radial-gradient(circle at 80% 70%, rgba(2, 132, 199, 0.32), transparent 50%);
    animation: techWaveMove 12s ease-in-out infinite alternate;
    pointer-events: none;
}

.hero-anim-tech-wave::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, #38bdf8, #ffffff, #38bdf8, transparent);
    background-size: 200% 100%;
    animation: techLineSweep 4s linear infinite;
}

@keyframes techWaveMove {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(4%, -4%) rotate(5deg); }
}

@keyframes techLineSweep {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* 2. Nano Moivn VA: Symmetric Diamond Compass & Gold Star Glow */
.hero-anim-royal-star::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(30deg, rgba(245, 197, 24, 0.08) 1px, transparent 1px),
        linear-gradient(150deg, rgba(245, 197, 24, 0.08) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.hero-anim-royal-star::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 85%;
    height: 4px;
    background: linear-gradient(90deg, transparent, #F5C518, #fff, #F5C518, transparent);
    animation: royalExpand 3.2s ease-in-out infinite alternate;
}

@keyframes royalExpand {
    0% { width: 35%; opacity: 0.6; }
    100% { width: 95%; opacity: 1; }
}

/* 3. CN NANO10*: Rainbow Star Spectrum & Shooting Streak */
.hero-anim-star-spectrum::before {
    content: '';
    position: absolute;
    top: 15%;
    right: -10%;
    width: 550px;
    height: 160px;
    background: var(--rainbow-spectrum);
    filter: blur(65px);
    opacity: 0.38;
    transform: rotate(-18deg);
    animation: starPulse 6s ease-in-out infinite alternate;
    pointer-events: none;
}

.hero-anim-star-spectrum::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--rainbow-spectrum);
}

@keyframes starPulse {
    0% { transform: rotate(-18deg) translateX(0) scale(0.95); opacity: 0.3; }
    100% { transform: rotate(-12deg) translateX(-40px) scale(1.08); opacity: 0.5; }
}

/* 4. TDKAW Nano: Industrial Diagonal Sweep & Technical Grid */
.hero-anim-industrial-geo::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        repeating-linear-gradient(-45deg, rgba(242, 101, 34, 0.07) 0px, rgba(242, 101, 34, 0.07) 2px, transparent 2px, transparent 28px);
    pointer-events: none;
}

.hero-anim-industrial-geo::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: repeating-linear-gradient(90deg, #F26522 0px, #F26522 40px, #0018F0 40px, #0018F0 80px);
}

.hero-content-box {
    position: relative;
    z-index: 2;
}

.hero-brand-logo-card {
    background: rgba(255, 255, 255, 0.96);
    padding: 24px 32px;
    border-radius: 24px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.hero-brand-logo-card img {
    max-width: 280px;
    max-height: 130px;
    width: auto;
    height: auto;
    object-fit: contain;
}

/* ==================== SECTION 4 THƯƠNG HIỆU (BRAND ECOSYSTEM CARDS) ==================== */
.brand-ecosystem-card {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.brand-ecosystem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--card-brand-color, var(--brand-primary));
    transition: height 0.3s ease;
}

.brand-ecosystem-card.style-star-spectrum::before {
    background: var(--rainbow-spectrum);
}

.brand-ecosystem-card.style-industrial-geo::before {
    background: linear-gradient(90deg, #F26522 50%, #0018F0 50%);
}

.brand-ecosystem-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 24px 48px rgba(15, 23, 42, 0.14);
    border-color: var(--card-brand-color, var(--brand-primary));
}

.brand-card-header {
    padding: 28px 24px 20px;
    background: var(--card-brand-bg, #f8fafc);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 135px;
    position: relative;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.brand-card-header img {
    max-height: 78px;
    max-width: 85%;
    object-fit: contain;
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.brand-ecosystem-card:hover .brand-card-header img {
    transform: scale(1.08);
}

.brand-card-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.brand-color-dots {
    display: flex;
    align-items: center;
    gap: 6px;
}

.brand-color-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}

/* ==================== 3D COMMERCIAL PAINT BUCKET VISUAL ==================== */
.paint-bucket-3d {
    width: 170px;
    height: 195px;
    margin: 0 auto;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    user-select: none;
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-card:hover .paint-bucket-3d {
    transform: translateY(-6px) scale(1.05);
}

.bucket-handle {
    position: absolute;
    top: 18px;
    width: 148px;
    height: 55px;
    border: 3px solid #cbd5e1;
    border-bottom: none;
    border-radius: 80px 80px 0 0;
    z-index: 1;
    transform: rotateX(25deg);
}

.bucket-lid {
    width: 146px;
    height: 22px;
    background: linear-gradient(90deg, #e2e8f0 0%, #ffffff 35%, #94a3b8 75%, #cbd5e1 100%);
    border-radius: 50% / 35%;
    position: relative;
    z-index: 4;
    border: 1px solid #cbd5e1;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.bucket-lid-rim {
    position: absolute;
    inset: 3px 8px;
    border-radius: 50%;
    background: linear-gradient(180deg, #cbd5e1, #f8fafc);
    border: 1px solid #94a3b8;
}

.bucket-body {
    width: 136px;
    height: 148px;
    margin-top: -9px;
    background: #ffffff;
    border-radius: 4px 4px 18px 18px / 4px 4px 16px 16px;
    position: relative;
    z-index: 3;
    overflow: hidden;
    box-shadow: inset -14px 0 22px rgba(15, 23, 42, 0.12),
                inset 10px 0 18px rgba(255, 255, 255, 0.8),
                0 12px 24px rgba(15, 23, 42, 0.16);
    border: 1px solid #e2e8f0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 16px 8px 10px;
}

.bucket-wave-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 56%;
    background: linear-gradient(145deg, var(--bucket-primary, #003399) 0%, var(--bucket-secondary, #0284c7) 100%);
    clip-path: ellipse(88% 72% at 50% 85%);
    z-index: 1;
}

.bucket-gloss {
    position: absolute;
    top: 0;
    left: 16%;
    width: 22%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
    z-index: 5;
    pointer-events: none;
}

.bucket-brand-logo {
    position: relative;
    z-index: 4;
    background: rgba(255, 255, 255, 0.96);
    padding: 5px 8px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    width: 88%;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bucket-brand-logo img {
    max-width: 100%;
    max-height: 38px;
    object-fit: contain;
}

.bucket-product-tag {
    position: relative;
    z-index: 4;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 90%;
    background: rgba(15, 23, 42, 0.85);
    color: #fff;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.65rem;
    font-weight: 700;
}

.bucket-vol {
    background: var(--bucket-accent, #38bdf8);
    color: #0f172a;
    padding: 1px 5px;
    border-radius: 4px;
    font-weight: 800;
}

.bucket-nano-badge {
    position: relative;
    z-index: 4;
    font-size: 0.6rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: #fff;
    text-transform: uppercase;
    text-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

.bucket-shadow {
    width: 120px;
    height: 14px;
    background: radial-gradient(ellipse at center, rgba(15, 23, 42, 0.24) 0%, transparent 72%);
    margin-top: -4px;
    z-index: 1;
}

/* ==================== PRODUCT CARDS ==================== */
.product-card {
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
    position: relative;
}

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

.product-card-thumb {
    position: relative;
    padding: 24px 16px 16px;
    background: radial-gradient(circle at 50% 35%, #ffffff 0%, #f1f5f9 100%);
    min-height: 230px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-light);
}

.product-real-img {
    max-height: 185px;
    max-width: 90%;
    object-fit: contain;
    transition: transform 0.4s ease;
}

.product-card:hover .product-real-img {
    transform: scale(1.06);
}

.product-badges {
    position: absolute;
    top: 12px;
    left: 12px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    z-index: 6;
}

.badge-pill-custom {
    font-size: 0.68rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    box-shadow: 0 3px 8px rgba(0,0,0,0.12);
}

.badge-featured { background: #003399; color: #fff; }
.badge-bestseller { background: #C82829; color: #fff; }
.badge-new { background: #059669; color: #fff; }

.product-brand-chip {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(4px);
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 700;
    border: 1px solid var(--border-light);
    z-index: 6;
}

.product-card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-card:hover .product-title {
    color: var(--brand-primary);
}

.product-specs-mini {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: auto;
    padding-top: 12px;
}

.spec-chip {
    font-size: 0.72rem;
    background: var(--surface-gray);
    color: var(--text-muted);
    padding: 3px 8px;
    border-radius: 6px;
    border: 1px solid var(--border-light);
}

/* ==================== CÂY MÀU PRO (COLORCITY.VN SWATCHES) ==================== */
.color-group-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    border-radius: 14px;
    border: 2px solid transparent;
    background: #fff;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    min-width: 96px;
}

.color-group-tab:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.color-group-tab.active {
    border-color: var(--brand-primary);
    background: var(--brand-bg-light);
}

.color-group-swatch-icon {
    width: 68px;
    height: 46px;
    border-radius: 8px;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.08);
}

.color-swatch-card {
    background: #fff;
    border-radius: 14px;
    padding: 10px;
    border: 1px solid var(--border-light);
    cursor: pointer;
    transition: var(--transition-smooth);
    height: 100%;
}

.color-swatch-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 28px rgba(15, 23, 42, 0.12);
    border-color: var(--brand-primary);
}

.color-leaf-box {
    width: 100%;
    height: 110px;
    border-top-left-radius: 22px;
    border-bottom-right-radius: 22px;
    border-top-right-radius: 6px;
    border-bottom-left-radius: 6px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    margin-bottom: 10px;
    position: relative;
    transition: transform 0.3s ease;
}

.color-swatch-card:hover .color-leaf-box {
    transform: scale(1.02);
}

/* ==================== FLOATING CTA (HOTLINE & ZALO) ==================== */
.floating-cta-group {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1040;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.floating-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff !important;
    font-size: 1.25rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
    position: relative;
}

.floating-btn-zalo {
    background: #0068ff;
    font-weight: 800;
    font-size: 0.85rem;
}

.floating-btn-phone {
    background: #e11d48;
    animation: phonePulse 2s infinite;
}

@keyframes phonePulse {
    0% { box-shadow: 0 0 0 0 rgba(225, 29, 72, 0.55); }
    70% { box-shadow: 0 0 0 14px rgba(225, 29, 72, 0); }
    100% { box-shadow: 0 0 0 0 rgba(225, 29, 72, 0); }
}

/* ==================== FOOTER ==================== */
.site-footer {
    background: #090f24;
    color: rgba(255, 255, 255, 0.78);
    padding-top: 70px;
    position: relative;
}

.site-footer h5 {
    color: #fff;
    font-size: 1.05rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.site-footer h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 42px;
    height: 3px;
    background: var(--brand-accent);
    border-radius: 3px;
}

.footer-brand-badges img {
    height: 38px;
    background: #fff;
    padding: 4px 8px;
    border-radius: 8px;
    margin-right: 8px;
    margin-bottom: 8px;
    object-fit: contain;
}

/* ==================== RESPONSIVE OPTIMIZATIONS ==================== */
@media (max-width: 991.98px) {
    .hero-slide-item {
        min-height: 500px;
        padding: 50px 0;
        text-align: center;
    }
    .hero-brand-logo-card {
        margin-top: 24px;
        padding: 18px 24px;
    }
    .hero-brand-logo-card img {
        max-width: 210px;
        max-height: 95px;
    }
}

@media (max-width: 575.98px) {
    .color-leaf-box {
        height: 85px;
    }
    .brand-logo-main {
        height: 38px;
    }
}