/* ============================================================
   VSSOFT — Medical White-Blue Design System (Redesign 08/2026)
   Palette: Trắng–Xanh chuẩn y tế
     Primary #1F6FD0 · Primary Dark #071A2B · Accent Mint #1F6FD0
     Nền #FFFFFF / #F5F5F0 · Text #071A2B / #3A4E63 · Border #D9E4E8
     Success #1FAE6C · Alert #E5484D
   Typography: Inter (body) + Be Vietnam Pro (headings)
   ============================================================ */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300..700&family=Be+Vietnam+Pro:wght@400..900&display=swap');

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
    font-family: 'Inter', system-ui, sans-serif;
    font-weight: 400;
    font-size: 16px;
    line-height: 1.65;
    background: #ffffff;
    color: #3A4E63;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Be Vietnam Pro', system-ui, sans-serif;
    font-weight: 700;
    line-height: 1.18;
    letter-spacing: -0.015em;
    color: #071A2B;
}

h1:focus, h1:focus-visible { outline: none !important; }

/* ============================================================
   ACCESSIBILITY — visible focus (WCAG 2.4.7)
   ============================================================ */
a:focus-visible, button:focus-visible,
input:focus-visible, textarea:focus-visible, select:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid rgba(0, 91, 255, 0.45);
    outline-offset: 2px;
    border-radius: 6px;
}
.dark-section a:focus-visible, .dark-section button:focus-visible,
.section-dark a:focus-visible, .section-dark button:focus-visible {
    outline-color: rgba(0, 184, 169, 0.7);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
    /* Primary — VSSOFT Blue (chuẩn y tế) */
    --primary: #1F6FD0;
    --primary-700: #071A2B;     /* Deep Medical Blue */
    --primary-600: #1A5CB0;
    --primary-400: #6AA4E6;
    --primary-300: #9CC3EE;
    --primary-50: #E7EFFA;
    --primary-25: #F4F9FF;

    /* Accent — Mint Teal */
    --accent: #1F6FD0;
    --accent-light: #6AA4E6;
    --accent-dark: #1A5CB0;

    /* Dark palette (footer / CTA bands) */
    --dark-900: #071A2B;        /* Ink Navy */
    --dark-800: #071A2B;        /* Deep Medical Blue */
    --dark-700: #12315C;
    --dark-600: #1A4480;

    /* Giữ tên biến --cyan cho tương thích, giá trị = Mint Teal */
    --cyan: #1F6FD0;
    --cyan-300: #6AA4E6;
    --cyan-50: #E7EFFA;

    /* Semantic */
    --success: #1FAE6C;         /* Clinical Green */
    --alert: #E5484D;           /* Signal Red — chỉ dùng cho form validation */

    --text-900: #071A2B;        /* Ink Navy — tiêu đề */
    --text-700: #3E5366;
    --text-500: #3A4E63;        /* Slate Gray — mô tả */
    --text-400: #6B7E90;
    /* AA-compliant text tokens (4.5:1+ on white) */
    --text-body: #3A4E63;
    --text-muted: #3A4E63;
    --text-faint: #6B7E90;      /* decorative/icons only, NOT for text */
    --text-on-dark: #EEF4FB;    /* headings on dark */
    --text-on-dark-muted: #C4D3E8; /* muted text on dark blue */
    --text-on-dark-faint: #9FB3CF;
    --text-light-900: #F8FAFC;
    --text-light-700: #D9E4F2;
    --text-light-500: #9FB3CF;
    --text-light-400: #3A4E63;

    --surface: #ffffff;
    --surface-soft: #F8FAFC;
    --surface-blue: #F5F5F0;    /* Ice Blue — nền section xen kẽ */
    --surface-blue-2: #EDEDE6;
    --surface-dark: #071A2B;
    --surface-dark-2: #071A2B;

    --border: #D9E4E8;          /* Soft Blue Line */
    --border-hover: rgba(31,111,208,0.25);
    --border-dark: rgba(255,255,255,0.12);
    --border-dark-hover: rgba(255,255,255,0.22);

    --radius-sm: 10px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-2xl: 36px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow: 0 4px 16px rgba(31,111,208,0.06);
    --shadow-md: 0 8px 32px rgba(31,111,208,0.08);
    --shadow-lg: 0 16px 48px rgba(31,111,208,0.12);
    --shadow-xl: 0 24px 64px rgba(31,111,208,0.16);
    --shadow-btn: 0 4px 20px rgba(31,111,208,0.28);
    --shadow-dark-glow: 0 0 40px rgba(31,111,208,0.25);

    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.22, 1, 0.36, 1);
    --transition: 0.35s var(--ease);
    --transition-fast: 0.2s var(--ease);
}

/* ============================================================
   SECTION LAYOUT
   ============================================================ */
.section-pad { padding: 100px 0; }
.section-pad-lg { padding: 140px 0; }
.section-pad-sm { padding: 72px 0; }
.container-max { max-width: 1280px; margin: 0 auto; padding: 0 28px; }

section { overflow-x: hidden; position: relative; }

/* ---- Mesh gradient backgrounds for sections ---- */
.bg-mesh-blue {
    background:
        radial-gradient(ellipse 80% 60% at 20% 20%, rgba(31,111,208,0.04) 0%, transparent 50%),
        radial-gradient(ellipse 60% 50% at 80% 80%, rgba(31,111,208,0.04) 0%, transparent 50%),
        #ffffff;
}
.bg-mesh-blue-soft {
    background:
        radial-gradient(ellipse 70% 50% at 10% 0%, rgba(31,111,208,0.06) 0%, transparent 50%),
        radial-gradient(ellipse 70% 50% at 90% 100%, rgba(31,111,208,0.05) 0%, transparent 50%),
        #F8FAFC;
}
.bg-mesh-dark {
    background:
        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(31,111,208,0.12) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 20% 80%, rgba(31,111,208,0.08) 0%, transparent 50%),
        #071A2B;
}
.bg-mesh-dark-2 {
    background:
        radial-gradient(ellipse 70% 60% at 30% 10%, rgba(31,111,208,0.15) 0%, transparent 50%),
        radial-gradient(ellipse 60% 50% at 70% 90%, rgba(31,111,208,0.10) 0%, transparent 50%),
        linear-gradient(135deg, #071A2B 0%, #071A2B 100%);
}

/* ---- Orb backgrounds ---- */
.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
}
.orb-primary {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(31,111,208,0.15) 0%, transparent 70%);
}
.orb-cyan {
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(31,111,208,0.12) 0%, transparent 70%);
}
.orb-top-right { top: -120px; right: -100px; }
.orb-bottom-left { bottom: -80px; left: -80px; }

/* ---- Grid dot pattern ---- */
.bg-grid-dots {
    position: absolute; inset: 0;
    background-image: radial-gradient(circle, rgba(31,111,208,0.06) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none; z-index: 0;
}
.bg-grid-dots-dark {
    position: absolute; inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none; z-index: 0;
}
/* ---- Grid line pattern (AI network feel) ---- */
.bg-grid-lines-dark {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none; z-index: 0;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
.section-label {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 16px;
    background: rgba(31,111,208,0.05);
    color: var(--primary);
    font-size: 0.75rem; font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: 100px;
    border: 1px solid rgba(31,111,208,0.12);
    font-family: 'Inter', sans-serif;
}
.section-label-dark {
    background: rgba(255,255,255,0.06);
    color: var(--cyan-300);
    border: 1px solid rgba(255,255,255,0.12);
}
.section-title {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: clamp(1.9rem, 3.8vw, 3.2rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.025em;
    color: var(--text-900);
}
.section-title-dark { color: var(--text-light-900); }
.section-subtitle {
    color: var(--text-500);
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 620px;
    margin-top: 16px;
}
.section-subtitle-dark { color: var(--text-light-500); }
.section-heading-center { text-align: center; }
.section-heading-center .section-subtitle { margin-left: auto; margin-right: auto; }

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.gradient-text-cyan {
    background: linear-gradient(135deg, var(--cyan) 0%, var(--primary-300) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---- Font weight shorthands ---- */
.font-400 { font-weight: 400; }
.font-500 { font-weight: 500; }
.font-600 { font-weight: 600; }
.font-700 { font-weight: 700; }
.font-800 { font-weight: 800; }
.font-900 { font-weight: 900; }

/* ============================================================
   GLASS EFFECTS
   ============================================================ */
.glass {
    background: rgba(255,255,255,0.72);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255,255,255,0.6);
    box-shadow: var(--shadow);
}
.glass-blue {
    background: rgba(31,111,208,0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(31,111,208,0.12);
}
.glass-dark {
    background: rgba(7,26,43,0.6);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow-dark-glow);
}

/* ============================================================
   CARDS — Unified System
   ============================================================ */
.card {
    background: #fff;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all 0.35s var(--ease-spring);
}
.card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}
.card-lift:hover { transform: translateY(-4px); }

.card-feature {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    padding: 28px 24px;
    transition: all 0.35s var(--ease-spring);
}
.card-feature:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}
.card-dark {
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-dark);
    backdrop-filter: blur(12px);
    transition: all 0.35s var(--ease-spring);
}
.card-dark:hover {
    background: rgba(255,255,255,0.06);
    border-color: var(--border-dark-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-dark-glow);
}

.card-product {
    position: relative;
    background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(232,240,255,0.7) 100%);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all 0.4s var(--ease-spring);
    overflow: hidden;
    cursor: pointer;
}
.card-product::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
    opacity: 0; transition: opacity var(--transition);
}
.card-product:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-hover);
}
.card-product:hover::before { opacity: 1; }

/* ---- Ecosystem grid card (3x3) ---- */
.eco-card {
    position: relative;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 28px 20px;
    transition: all 0.4s var(--ease-spring);
    overflow: hidden;
}
.eco-card::after {
    content: '';
    position: absolute; inset: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, var(--primary), var(--cyan));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0; transition: opacity 0.4s var(--ease);
}
.eco-card:hover {
    transform: scale(1.04);
    box-shadow: var(--shadow-lg);
}
.eco-card:hover::after { opacity: 1; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 13px 30px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-400) 100%);
    color: #fff !important;
    font-weight: 600; font-size: 0.89rem;
    border-radius: var(--radius);
    border: none; cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-btn);
    text-decoration: none !important;
    letter-spacing: 0.01em;
    font-family: 'Inter', sans-serif;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(31,111,208,0.4);
}
.btn-secondary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 13px 30px;
    background: transparent;
    color: var(--primary) !important;
    font-weight: 600; font-size: 0.89rem;
    border-radius: var(--radius);
    border: 1.5px solid rgba(31,111,208,0.22);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none !important;
    font-family: 'Inter', sans-serif;
}
.btn-secondary:hover {
    background: var(--primary-50);
    border-color: var(--primary);
    transform: translateY(-2px);
}
.btn-white {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 13px 30px;
    background: #fff;
    color: var(--primary) !important;
    font-weight: 600; font-size: 0.89rem;
    border-radius: var(--radius);
    border: none; cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    text-decoration: none !important;
    font-family: 'Inter', sans-serif;
}
.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
.btn-ghost {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 9px 18px;
    background: transparent;
    color: var(--text-500) !important;
    font-weight: 500; font-size: 0.85rem;
    border-radius: var(--radius-sm);
    border: none; cursor: pointer;
    transition: all var(--transition);
    text-decoration: none !important;
    font-family: 'Inter', sans-serif;
}
.btn-ghost:hover {
    background: rgba(31,111,208,0.05);
    color: var(--primary) !important;
}
/* Dark variant buttons for dark sections */
.btn-glass {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 13px 30px;
    background: rgba(255,255,255,0.08);
    color: #fff !important;
    font-weight: 600; font-size: 0.89rem;
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.16);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none !important;
    backdrop-filter: blur(12px);
    font-family: 'Inter', sans-serif;
}
.btn-glass:hover {
    background: rgba(255,255,255,0.14);
    border-color: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

/* ============================================================
   BADGES
   ============================================================ */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.73rem; font-weight: 600;
    font-family: 'Inter', sans-serif;
}
.badge-blue { background: rgba(31,111,208,0.08); color: var(--primary); border: 1px solid rgba(31,111,208,0.14); }
.badge-cyan { background: rgba(31,111,208,0.08); color: #1A5CB0; border: 1px solid rgba(31,111,208,0.14); }
.badge-green { background: rgba(34,197,94,0.08); color: #16a34a; border: 1px solid rgba(34,197,94,0.14); }
.badge-dark { background: rgba(255,255,255,0.06); color: var(--text-light-700); border: 1px solid rgba(255,255,255,0.1); }

/* ============================================================
   FORMS
   ============================================================ */
.input-field {
    width: 100%;
    padding: 13px 18px;
    border: 1.5px solid rgba(31,111,208,0.12);
    border-radius: var(--radius);
    font-family: 'Inter', sans-serif;
    font-size: 0.88rem;
    background: #fff;
    color: var(--text-900);
    transition: all var(--transition);
    outline: none;
}
.input-field:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(31,111,208,0.08);
}
.input-field::placeholder { color: var(--text-400); }
.input-field-dark {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.12);
    color: var(--text-light-900);
}
.input-field-dark::placeholder { color: var(--text-light-400); }
.input-field-dark:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 4px rgba(31,111,208,0.12);
}

/* ============================================================
   SCROLL PROGRESS BAR
   ============================================================ */
.scroll-progress {
    position: fixed;
    top: 0; left: 0;
    height: 3px;
    width: 0;
    background: linear-gradient(90deg, #1F6FD0, #1F6FD0);
    z-index: 2000;
    pointer-events: none;
    transition: width 0.08s linear;
}

/* ============================================================
   CURSOR GLOW (spotlight in dark sections)
   ============================================================ */
.cursor-glow {
    position: absolute;
    width: 640px;
    height: 640px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    background: radial-gradient(circle, rgba(31,111,208,0.10) 0%, transparent 60%);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.5s ease;
}
.dark-section:hover .cursor-glow,
.section-dark:hover .cursor-glow,
.hero-section:hover .cursor-glow,
#ai-features:hover .cursor-glow { opacity: 1; }
@media (hover: none) { .cursor-glow { display: none; } }

/* ============================================================
   NAVBAR HIDE ON SCROLL
   ============================================================ */
.navbar.nav-hidden { transform: translateY(-100%); }
.navbar { transition: transform 0.35s var(--ease), padding 0.3s var(--ease), background 0.3s var(--ease), box-shadow 0.3s var(--ease); }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 14px 0;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all var(--transition);
}
.navbar.scrolled {
    background: rgba(255,255,255,0.96);
    box-shadow: 0 4px 24px rgba(15,36,56,0.08);
    padding: 8px 0;
}
.nav-link {
    color: var(--text-700); font-weight: 500; font-size: 0.9rem;
    transition: color var(--transition); position: relative;
    text-decoration: none; font-family: 'Inter', sans-serif;
}
.nav-link:hover { color: var(--primary); text-decoration: none; }
.nav-link::after {
    content: ''; position: absolute; bottom: -3px; left: 0;
    width: 0; height: 2px; background: var(--primary);
    border-radius: 2px; transition: width var(--transition);
}
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { width: 100%; }

/* ---- Dropdown ---- */
.dropdown-trigger { position: relative; }
.dropdown-menu {
    position: absolute; top: calc(100% + 10px); left: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(24px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 12px;
    min-width: 220px;
    opacity: 0; visibility: hidden;
    transform: translateY(8px);
    transition: all 0.2s var(--ease); z-index: 100;
}
.dropdown-trigger:hover .dropdown-menu,
.dropdown-trigger:focus-within .dropdown-menu {
    opacity: 1; visibility: visible;
    transform: translateY(0);
}
.dropdown-item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 16px; border-radius: var(--radius);
    color: var(--text-500); font-size: 0.85rem; font-weight: 500;
    text-decoration: none; transition: all var(--transition-fast);
}
.dropdown-item:hover {
    background: var(--primary-50); color: var(--primary); text-decoration: none;
}

/* ---- Mobile Menu ---- */
.mobile-menu {
    position: fixed; inset: 0; z-index: 999;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(24px);
    display: flex; flex-direction: column;
    padding: 88px 32px 40px;
    transform: translateX(-100%);
    transition: transform 0.4s var(--ease-spring);
    overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-nav-link {
    font-weight: 600; color: var(--text-900);
    text-decoration: none; transition: color var(--transition-fast);
}
.mobile-nav-link:hover { color: var(--primary); }

/* ============================================================
   HERO SECTION (Light — Trắng–Xanh chuẩn y tế)
   ============================================================ */
.hero-section {
    position: relative; min-height: 100vh;
    display: flex; align-items: center;
    overflow: hidden;
    background:
        radial-gradient(ellipse 70% 55% at 85% 10%, rgba(31,111,208,0.08) 0%, transparent 55%),
        radial-gradient(ellipse 55% 45% at 5% 90%, rgba(31,111,208,0.07) 0%, transparent 55%),
        linear-gradient(180deg, #FFFFFF 0%, #F5F5F0 100%);
    padding-top: 80px;
}
.hero-bg-orb {
    position: absolute; border-radius: 50%;
    filter: blur(80px); opacity: 0.55; pointer-events: none;
}
.hero-bg-orb-1 {
    width: 550px; height: 550px;
    background: radial-gradient(circle, rgba(31,111,208,0.12) 0%, transparent 70%);
    top: -80px; right: -80px;
}
.hero-bg-orb-2 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(31,111,208,0.12) 0%, transparent 70%);
    bottom: 60px; left: -60px;
}
.hero-grid-dot {
    position: absolute; inset: 0;
    background-image: radial-gradient(circle, rgba(31,111,208,0.07) 1px, transparent 1px);
    background-size: 36px 36px;
    pointer-events: none; z-index: 0;
}

/* ---- Hero Dashboard mockup (light card) ---- */
.hero-dashboard {
    position: relative;
    border-radius: var(--radius-xl);
    background: #fff;
    border: 1px solid var(--border);
    box-shadow: 0 24px 80px rgba(15,36,56,0.12), 0 0 60px rgba(31,111,208,0.08);
    overflow: hidden;
}
.hero-dashboard-bar {
    display: flex; align-items: center; gap: 6px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--surface-soft);
}
.hero-dashboard-dot {
    width: 10px; height: 10px; border-radius: 50%;
}
.hero-dashboard-body { padding: 20px; }
.hero-float-card {
    position: absolute;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 18px;
    box-shadow: 0 12px 40px rgba(15,36,56,0.14);
    z-index: 10;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

/* -- Reveal: always visible by default, animation on scroll -- */
.reveal, .reveal-left, .reveal-right, .reveal-scale {
    opacity: 1; transform: none; transition: none;
}
.reveal.revealed     { animation: aniRevealUp 0.7s var(--ease-spring) both; }
.reveal-left.revealed  { animation: aniRevealLeft 0.7s var(--ease-spring) both; }
.reveal-right.revealed { animation: aniRevealRight 0.7s var(--ease-spring) both; }
.reveal-scale.revealed{ animation: aniRevealScale 0.6s var(--ease-spring) both; }

@keyframes aniRevealUp {
    from { opacity: 0.01; transform: translateY(32px); }
    to   { opacity: 1;    transform: translateY(0); }
}
@keyframes aniRevealLeft {
    from { opacity: 0.01; transform: translateX(-32px); }
    to   { opacity: 1;    transform: translateX(0); }
}
@keyframes aniRevealRight {
    from { opacity: 0.01; transform: translateX(32px); }
    to   { opacity: 1;    transform: translateX(0); }
}
@keyframes aniRevealScale {
    from { opacity: 0.01; transform: scale(0.9); }
    to   { opacity: 1;    transform: scale(1); }
}

/* -- Stagger delays -- */
.reveal-delay-1.revealed, .reveal-left.reveal-delay-1.revealed,
.reveal-right.reveal-delay-1.revealed, .reveal-scale.reveal-delay-1.revealed { animation-delay: 0.08s; }
.reveal-delay-2.revealed, .reveal-left.reveal-delay-2.revealed,
.reveal-right.reveal-delay-2.revealed, .reveal-scale.reveal-delay-2.revealed { animation-delay: 0.16s; }
.reveal-delay-3.revealed, .reveal-left.reveal-delay-3.revealed,
.reveal-right.reveal-delay-3.revealed, .reveal-scale.reveal-delay-3.revealed { animation-delay: 0.24s; }
.reveal-delay-4.revealed, .reveal-left.reveal-delay-4.revealed,
.reveal-right.reveal-delay-4.revealed, .reveal-scale.reveal-delay-4.revealed { animation-delay: 0.32s; }
.reveal-delay-5.revealed, .reveal-left.reveal-delay-5.revealed,
.reveal-right.reveal-delay-5.revealed, .reveal-scale.reveal-delay-5.revealed { animation-delay: 0.40s; }
.reveal-delay-6.revealed, .reveal-left.reveal-delay-6.revealed,
.reveal-right.reveal-delay-6.revealed, .reveal-scale.reveal-delay-6.revealed { animation-delay: 0.48s; }

/* -- Float -- */
@keyframes aniFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-20px); }
}
@keyframes aniFloatRotate {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50%      { transform: translateY(-14px) rotate(3deg); }
}
.animate-float     { animation: aniFloat 6s ease-in-out infinite; }
.animate-float-2   { animation: aniFloat 7s ease-in-out 1.8s infinite; }
.animate-float-3   { animation: aniFloatRotate 5.5s ease-in-out infinite; }

/* -- Glow pulse -- */
@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 20px rgba(31,111,208,0.15); }
    50%      { box-shadow: 0 0 40px rgba(31,111,208,0.35); }
}
.glow-pulse { animation: pulseGlow 2.5s ease-in-out infinite; }

/* -- Gradient shift -- */
.animated-gradient {
    background: linear-gradient(270deg, var(--primary), var(--primary-400), var(--cyan), var(--primary-300));
    background-size: 400% 400%;
    animation: gradientShift 8s ease infinite;
}
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* -- Page enter -- */
.page-transition { animation: pageIn 0.4s var(--ease-spring); }
@keyframes pageIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   LOGO CAROUSEL (Trusted By — infinite scroll)
   ============================================================ */
.logo-marquee {
    overflow: hidden;
    position: relative;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.logo-marquee-track {
    display: flex;
    gap: 64px;
    width: max-content;
    animation: marqueeScroll 30s linear infinite;
}
.logo-marquee:hover .logo-marquee-track {
    animation-play-state: paused;
}
@keyframes marqueeScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
.logo-marquee-item {
    display: flex; align-items: center; gap: 10px;
    white-space: nowrap;
    opacity: 0.6;
    transition: opacity 0.3s;
}
.logo-marquee-item:hover { opacity: 1; }

/* ============================================================
   DASHBOARD SHOWCASE (Tabs)
   ============================================================ */
.dashboard-tabs {
    display: flex; flex-wrap: wrap; gap: 8px;
    justify-content: center;
}
.dashboard-tab {
    padding: 10px 22px;
    border-radius: 100px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text-500);
    font-weight: 600; font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition);
    font-family: 'Inter', sans-serif;
}
.dashboard-tab:hover { border-color: var(--border-hover); color: var(--primary); }
.dashboard-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-400));
    color: #fff;
    border-color: transparent;
    box-shadow: var(--shadow-btn);
}
.dashboard-frame {
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    background: #fff;
    transition: all 0.4s var(--ease-spring);
}
.dashboard-frame:hover {
    box-shadow: var(--shadow-xl);
    transform: scale(1.01);
}
.dashboard-frame-bar {
    display: flex; align-items: center; gap: 6px;
    padding: 14px 20px;
    background: var(--surface-soft);
    border-bottom: 1px solid var(--border);
}
.dashboard-frame-dot {
    width: 12px; height: 12px; border-radius: 50%;
}
.dashboard-frame-body { padding: 24px; min-height: 420px; }

/* ============================================================
   WORKFLOW TIMELINE (Scroll storytelling)
   ============================================================ */
.workflow-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}
.workflow-timeline-line {
    position: absolute;
    left: 32px; top: 0; bottom: 0;
    width: 2px;
    background: rgba(31,111,208,0.1);
}
.workflow-timeline-progress {
    position: absolute;
    left: 32px; top: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--cyan));
    transition: height 0.1s linear;
}
.workflow-step-item {
    position: relative;
    padding-left: 80px;
    padding-bottom: 48px;
}
.workflow-step-item:last-child { padding-bottom: 0; }
.workflow-step-dot {
    position: absolute;
    left: 24px; top: 4px;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid rgba(31,111,208,0.2);
    z-index: 1;
    transition: all 0.4s var(--ease-spring);
}
.workflow-step-item.active .workflow-step-dot {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 0 6px rgba(31,111,208,0.12), 0 0 20px rgba(31,111,208,0.4);
}
.workflow-step-item.active .workflow-step-num { color: var(--primary); }
.workflow-step-item.active .workflow-step-title { color: var(--text-900); }

/* ============================================================
   BEFORE/AFTER CHART (Case Study)
   ============================================================ */
.ba-chart {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.ba-chart-col {
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
}
.ba-chart-col.before { background: rgba(138,153,168,0.08); }
.ba-chart-col.after { background: rgba(31,111,208,0.06); }
.ba-bar {
    height: 12px;
    border-radius: 6px;
    margin: 12px auto;
    transition: width 1.2s var(--ease-spring);
}

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
}
.faq-item:hover { border-color: var(--border-hover); }
.faq-question {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 24px;
    cursor: pointer;
    font-weight: 600; font-size: 1rem;
    color: var(--text-900);
    background: #fff;
    transition: background var(--transition-fast);
}
.faq-question:hover { background: var(--surface-blue); }
.faq-answer {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.35s var(--ease-spring);
}
.faq-item.open .faq-answer { grid-template-rows: 1fr; }
.faq-answer-inner {
    overflow: hidden;
    padding: 0 24px;
    color: var(--text-500);
    line-height: 1.7;
}
.faq-item.open .faq-answer-inner { padding: 0 24px 20px; }
.faq-icon {
    transition: transform 0.35s var(--ease-spring);
    flex-shrink: 0;
}
.faq-item.open .faq-icon { transform: rotate(180deg); }

/* ============================================================
   STANDARDS BADGES (Tooltip)
   ============================================================ */
.standard-badge {
    position: relative;
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 22px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: #fff;
    font-weight: 700; font-size: 0.85rem;
    color: var(--text-700);
    cursor: help;
    transition: all var(--transition);
}
.standard-badge:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.standard-tooltip {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark-900);
    color: var(--text-light-900);
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.78rem; font-weight: 400;
    white-space: nowrap;
    opacity: 0; visibility: hidden;
    transition: all 0.2s var(--ease);
    z-index: 50;
    box-shadow: var(--shadow-lg);
}
.standard-tooltip::after {
    content: '';
    position: absolute;
    top: 100%; left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--dark-900);
}
.standard-badge:hover .standard-tooltip {
    opacity: 1; visibility: visible;
    transform: translateX(-50%) translateY(-4px);
}

/* ============================================================
   TESTIMONIAL CAROUSEL
   ============================================================ */
.testimonial-carousel {
    position: relative;
    overflow: hidden;
}
.testimonial-track {
    display: flex;
    transition: transform 0.5s var(--ease-spring);
}
.testimonial-slide {
    flex: 0 0 100%;
    padding: 0 16px;
}
.testimonial-card {
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 40px;
    transition: all var(--transition);
    box-shadow: var(--shadow);
}
.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}
.testimonial-nav {
    display: flex; gap: 8px; justify-content: center;
    margin-top: 24px;
}
.testimonial-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: rgba(31,111,208,0.2);
    border: none; cursor: pointer;
    transition: all var(--transition);
}
.testimonial-dot.active {
    width: 28px; border-radius: 4px;
    background: var(--primary);
}

/* ============================================================
   WORKFLOW ICON (legacy compat)
   ============================================================ */
.workflow-icon {
    width: 64px; height: 64px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary), var(--primary-400));
    display: flex; align-items: center; justify-content: center;
    color: #fff;
    box-shadow: 0 8px 24px rgba(31,111,208,0.2);
    transition: all 0.4s var(--ease-spring);
    position: relative; z-index: 1;
}

/* ============================================================
   STATISTICS
   ============================================================ */
.stat-number {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: clamp(2.2rem, 4.5vw, 3.6rem);
    font-weight: 900; letter-spacing: -0.04em; line-height: 1;
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================================
   PRICING
   ============================================================ */
.pricing-card {
    border-radius: var(--radius-2xl);
    padding: 40px 36px;
    background: #fff;
    border: 2px solid var(--border);
    transition: all var(--transition);
    position: relative; overflow: hidden;
}
.pricing-card.featured {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-400) 100%);
    border-color: transparent;
    transform: scale(1.04);
    box-shadow: var(--shadow-xl);
}
.pricing-card:hover { transform: translateY(-4px); }
.pricing-card.featured:hover { transform: scale(1.04) translateY(-4px); }

/* ============================================================
   FLOAT CARD
   ============================================================ */
.float-card {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 20px;
    box-shadow: var(--shadow-md);
    position: absolute;
    white-space: nowrap;
}

/* ============================================================
   GLOW EFFECTS
   ============================================================ */
.glow-blue { box-shadow: 0 0 30px rgba(31,111,208,0.15), 0 0 60px rgba(31,111,208,0.08); }
.glow-cyan { box-shadow: 0 0 30px rgba(31,111,208,0.15), 0 0 60px rgba(31,111,208,0.08); }
.icon-glow { filter: drop-shadow(0 0 10px rgba(31,111,208,0.35)); }

/* ============================================================
   SKELETON
   ============================================================ */
.skeleton {
    background: linear-gradient(90deg, #f1f5f9 25%, #e8f0fe 50%, #f1f5f9 75%);
    background-size: 400% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: 8px;
}
@keyframes shimmer {
    0% { background-position: 100% 0; }
    100% { background-position: -100% 0; }
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer-link {
    color: #6B7E90; font-size: 0.85rem;
    transition: color var(--transition-fast);
    text-decoration: none; display: block;
    margin-bottom: 10px; line-height: 1.5;
}
.footer-link:hover { color: #fff; text-decoration: none; }

/* ============================================================
   BLAZOR ERROR BOUNDARY
   ============================================================ */
.blazor-error-boundary {
    background: #fff1f2; border: 1px solid #fca5a5;
    padding: 16px; border-radius: 12px; color: #b91c1c;
}
.blazor-error-boundary::after { content: "Da xay ra loi. Vui long tai lai trang."; }
.valid.modified:not([type=checkbox]) { outline: 1px solid #22c55e; }
.invalid { outline: 1px solid #ef4444; }
.validation-message { color: #ef4444; font-size: 0.85rem; }

/* ============================================================
   VS MEDLINE ICON SYSTEM (bộ icon riêng)
   ============================================================ */
.vs-icon, .icon-tile svg { display: block; }
.icon-tile {
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 14px; flex-shrink: 0;
    transition: transform 0.35s var(--ease-spring), box-shadow 0.35s var(--ease);
}
.icon-tile-light { background: var(--primary-50); color: var(--primary); }
.icon-tile-mint { background: var(--cyan-50); color: var(--accent-dark); }
.icon-tile-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-400) 100%);
    color: #fff;
    box-shadow: 0 8px 24px rgba(31,111,208,0.25);
}
.icon-tile-dark {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.12);
    color: var(--accent-light);
}
.card:hover .icon-tile, .eco-card:hover .icon-tile, .card-feature:hover .icon-tile {
    transform: scale(1.06);
}

/* Check list item (dùng chung) */
.vs-check-item { display: flex; align-items: flex-start; gap: 10px; }
.vs-check-item .vs-check-ico {
    width: 20px; height: 20px; border-radius: 50%;
    background: var(--cyan-50); color: var(--accent-dark);
    display: inline-flex; align-items: center; justify-content: center;
    flex-shrink: 0; margin-top: 2px;
}

/* Trust badge pill (hero / product pages) */
.trust-pill {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 16px; border-radius: 100px;
    background: rgba(255,255,255,0.85);
    border: 1px solid var(--border);
    font-size: 0.8rem; font-weight: 600; color: var(--text-700);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(8px);
}
.trust-pill svg { color: var(--accent-dark); }

/* ============================================================
   ADMIN SHELL (sidebar layout)
   ============================================================ */
.admin-shell {
    display: flex;
    min-height: 100vh;
    background: var(--surface-blue);
}
.admin-sidebar {
    width: 248px;
    flex-shrink: 0;
    background: linear-gradient(180deg, #071A2B 0%, #12315C 100%);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
}
.admin-nav-item {
    display: flex; align-items: center; gap: 11px;
    width: 100%;
    padding: 10px 14px;
    border-radius: 12px;
    border: none; background: transparent;
    color: #9FB3CF;
    font-family: 'Inter', sans-serif;
    font-size: 0.86rem; font-weight: 500;
    cursor: pointer;
    transition: all 0.2s var(--ease);
    text-align: left;
}
.admin-nav-item:hover { background: rgba(255,255,255,0.06); color: #fff; }
.admin-nav-item.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-600));
    color: #fff;
    box-shadow: 0 6px 18px rgba(31,111,208,0.35);
}
.admin-badge {
    margin-left: auto;
    background: #E5484D;
    color: #fff;
    font-size: 0.68rem; font-weight: 700;
    padding: 2px 8px;
    border-radius: 100px;
}
.admin-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.admin-header {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px;
    padding: 20px 32px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 50;
}
.admin-content { padding: 28px 32px; }
.admin-card {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.admin-table { width: 100%; font-size: 0.85rem; border-collapse: collapse; }
.admin-table thead th {
    text-align: left;
    padding: 12px 16px;
    font-size: 0.72rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.07em;
    color: var(--text-400);
    background: var(--surface-blue);
    border-bottom: 1px solid var(--border);
}
.admin-table thead th.text-right { text-align: right; }
.admin-table tbody td {
    padding: 13px 16px;
    border-bottom: 1px solid var(--surface-blue);
    vertical-align: middle;
}
.admin-table tbody tr:last-child td { border-bottom: none; }
.admin-table tbody tr:hover { background: var(--primary-25); }
.admin-action {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 5px 10px;
    border: none; background: transparent;
    color: var(--primary);
    font-size: 0.78rem; font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s;
    font-family: 'Inter', sans-serif;
}
.admin-action:hover { background: var(--primary-50); }
.admin-action-danger { color: var(--alert); }
.admin-action-danger:hover { background: rgba(229,72,77,0.07); }

@media (max-width: 900px) {
    .admin-shell { flex-direction: column; }
    .admin-sidebar {
        width: 100%; height: auto; position: static;
    }
    .admin-sidebar nav { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
    .admin-sidebar > div:last-child { display: flex; gap: 8px; }
    .admin-sidebar > div:last-child form { flex: 1; }
    .admin-sidebar > div:last-child form .admin-nav-item { width: 100%; }
    .admin-content { padding: 16px; }
    .admin-header { padding: 14px 16px; }
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: #f8fafc; }
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--cyan));
    border-radius: 3px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .section-pad { padding: 72px 0; }
    .section-pad-lg { padding: 96px 0; }
    .hero-section { min-height: auto; padding: 100px 0 48px; }
    .hero-bg-orb-1 { width: 300px; height: 300px; }
    .hero-bg-orb-2 { width: 220px; height: 220px; }
    .pricing-card.featured { transform: scale(1); }
    .pricing-card.featured:hover { transform: translateY(-4px); }
    /* Tablet: keep floating cards but scale + pull inside frame */
    .hero-float-card { transform: scale(0.82); }
    .hero-float-card:nth-of-type(1) { top: 8px; right: 6px; }
    .hero-float-card:nth-of-type(2) { bottom: 90px; right: 4px; }
    .hero-float-card:nth-of-type(3) { bottom: 0; left: 6px; }
    .hero-float-card:nth-of-type(4) { top: 110px; left: 4px; }
}
@media (max-width: 640px) {
    .container-max { padding: 0 18px; }
    .section-pad { padding: 56px 0; }
    .section-pad-lg { padding: 72px 0; }
    .section-title { font-size: clamp(1.55rem, 5.5vw, 2rem); }
    .hero-bg-orb-1 { width: 200px; height: 200px; }
    .hero-bg-orb-2 { display: none; }
    /* Mobile: hide floating cards (no room) — dashboard still shows stats */
    .hero-float-card { display: none; }
    .float-card { display: none; }
    .card-product:hover { transform: translateY(-4px); }
    .ba-chart { grid-template-columns: 1fr; }
    .dashboard-frame-body { min-height: 300px; padding: 16px; }
    /* Mobile typography floor */
    body { font-size: 15px; }
    .text-xs { font-size: 0.8rem !important; }
    .text-sm { font-size: 0.9rem !important; }
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%      { opacity: .5; transform: scale(1.35); }
}

/* ============================================================
   ══════════════════════════════════════════════════════════
   VSSOFT / CLINICAL INFRASTRUCTURE — Design Direction 2026
   Swiss Editorial × Hospital Architecture × Clinical Data
   Không: gradient · glass · neon · orb · particle
   Có: blueprint · data flow · massive type · editorial grid
   ══════════════════════════════════════════════════════════
   ============================================================ */

:root {
    /* Palette — Deep Medical Blue + Off-white */
    --ink: #071A2B;          /* nền tối / chữ chính */
    --ink-80: #1B3049;
    --ink-60: #3A4E63;
    --ink-40: #6B7E90;
    --paper: #F5F5F0;        /* off-white ấm */
    --paper-2: #EDEDE6;
    --line: #D9E4E8;         /* blueprint hairline */
    --line-dark: #22384E;    /* hairline trên nền ink */
    --teal: #1F6FD0;         /* clinical accent duy nhất */
    --teal-soft: #E7EFFA;
    --mono: 'IBM Plex Mono', 'JetBrains Mono', ui-monospace, monospace;
}

/* ---------- Motion language: data flowing through a system ---------- */
@keyframes flowDash {
    to { stroke-dashoffset: -24; }
}
.flow-line {
    stroke-dasharray: 4 8;
    animation: flowDash 1.2s linear infinite;
}
@keyframes nodePulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.35; }
}
.flow-node-dot { animation: nodePulse 2.4s ease-in-out infinite; }

/* ---------- Blueprint backgrounds ---------- */
.blueprint-bg {
    background-color: var(--paper);
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 56px 56px;
}
.blueprint-bg-dark {
    background-color: var(--ink);
    background-image:
        linear-gradient(rgba(217,228,232,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(217,228,232,0.06) 1px, transparent 1px);
    background-size: 56px 56px;
}

/* ---------- Editorial typography ---------- */
.ed-display {
    font-family: 'Be Vietnam Pro', 'Inter', sans-serif;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.03em;
    line-height:1.24 ;
    color: var(--ink);
}
.ed-display-light { color: var(--paper); }
.ed-display .teal { color: var(--teal); }
.ed-display-xl { font-size: clamp(2.6rem, 8.5vw, 7.5rem); }
.ed-display-lg { font-size: clamp(2.2rem, 6vw, 5rem); }
.ed-display-md { font-size: clamp(1.7rem, 4vw, 3.2rem); }

.mono-label {
    font-family: var(--mono);
    font-size: 0.72rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--ink-60);
}
.mono-label-teal { color: var(--teal); }
.mono-label-light { color: rgba(245,245,240,0.6); }

.ed-rule { border: none; border-top: 1px solid var(--line); }
.ed-rule-dark { border: none; border-top: 1px solid var(--line-dark); }

/* Số liệu như design element — không card */
.stat-display {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-weight: 900;
    letter-spacing: -0.035em;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    color: var(--ink);
}
.stat-display-light { color: var(--paper); }

/* ---------- VSSOFT Grid (DNA layout) ---------- */
.vss-grid {
    display: grid;
    border: 1px solid var(--line);
    background: var(--paper);
}
.vss-grid > * {
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.vss-row {
    display: grid;
    grid-template-columns: 88px 1fr auto;
    align-items: stretch;
    transition: background 0.25s ease;
    text-decoration: none !important;
}
.vss-row:hover { background: #fff; }
.vss-row:hover .vss-row-name { color: var(--teal); }
.vss-row-idx {
    font-family: var(--mono);
    font-size: 0.8rem;
    color: var(--ink-40);
    display: flex; align-items: center; justify-content: center;
    border-right: 1px solid var(--line);
}
.vss-row-main { padding: 28px 32px; }
.vss-row-name {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-weight: 800;
    font-size: clamp(1.3rem, 2.4vw, 2rem);
    letter-spacing: -0.02em;
    color: var(--ink);
    transition: color 0.25s ease;
}
.vss-row-desc { color: var(--ink-60); font-size: 0.92rem; margin-top: 6px; max-width: 560px; }
.vss-row-arrow {
    display: flex; align-items: center; padding: 0 28px;
    color: var(--ink-40);
    border-left: 1px solid var(--line);
    transition: all 0.25s ease;
}
.vss-row:hover .vss-row-arrow { color: var(--teal); transform: translateX(4px); }

/* ---------- Editorial page hero (dùng cho mọi trang con) ---------- */
.ed-hero {
    background: var(--paper);
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 56px 56px;
    border-bottom: 1px solid var(--line);
    padding: 168px 0 88px;
    position: relative;
    overflow: hidden;
}
.ed-hero-title {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.03em;
    line-height: 0.96;
    font-size: clamp(2.4rem, 6.5vw, 5.5rem);
    color: var(--ink);
}
.ed-hero-sub {
    color: var(--ink-60);
    font-size: 1.08rem;
    line-height: 1.7;
    max-width: 640px;
}

/* ---------- Flat buttons (override gradient cũ) ---------- */
.btn-primary {
    background: var(--ink) !important;
    box-shadow: none !important;
    border-radius: 4px !important;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem !important;
    font-weight: 700 !important;
}
.btn-primary:hover {
    background: var(--teal) !important;
    transform: none !important;
    box-shadow: none !important;
}
.btn-secondary {
    border: 1px solid var(--ink) !important;
    color: var(--ink) !important;
    border-radius: 4px !important;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem !important;
    font-weight: 700 !important;
}
.btn-secondary:hover {
    background: var(--ink) !important;
    color: var(--paper) !important;
    transform: none !important;
}
.btn-white {
    background: var(--paper) !important;
    color: var(--ink) !important;
    border-radius: 4px !important;
    box-shadow: none !important;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem !important;
    font-weight: 700 !important;
}
.btn-glass {
    background: transparent !important;
    border: 1px solid rgba(245,245,240,0.35) !important;
    border-radius: 4px !important;
    backdrop-filter: none !important;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem !important;
}
.btn-glass:hover { background: rgba(245,245,240,0.1) !important; transform: none !important; }

/* ---------- Section label → mono editorial ---------- */
.section-label {
    background: transparent !important;
    border: none !important;
    border-left: 2px solid var(--teal) !important;
    border-radius: 0 !important;
    padding: 2px 0 2px 12px !important;
    font-family: var(--mono) !important;
    font-size: 0.72rem !important;
    font-weight: 500 !important;
    letter-spacing: 0.22em !important;
    color: var(--teal) !important;
}
.section-label-dark {
    border-left-color: var(--teal) !important;
    color: #9CC3EE !important;
}

/* ---------- Cards → flat editorial ---------- */
.card, .card-feature, .eco-card, .card-product {
    border-radius: 2px !important;
    border: 1px solid var(--line) !important;
    box-shadow: none !important;
    background: #fff;
}
.card:hover, .card-feature:hover, .eco-card:hover, .card-product:hover {
    box-shadow: none !important;
    border-color: var(--ink) !important;
    transform: none !important;
}
.card-product::before, .eco-card::after { display: none !important; }

/* ---------- Navbar → flat paper ---------- */
.navbar {
    background: var(--paper) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border-bottom: 1px solid var(--line) !important;
}
.navbar.scrolled { background: var(--paper) !important; box-shadow: none !important; }
.nav-link { color: var(--ink-60) !important; font-weight: 600; }
.nav-link:hover { color: var(--teal) !important; }
.nav-link::after { background: var(--teal) !important; }
.dropdown-menu {
    border-radius: 2px !important;
    border: 1px solid var(--line) !important;
    box-shadow: 0 16px 48px rgba(7,26,43,0.10) !important;
    backdrop-filter: none !important;
}
.mobile-menu { background: var(--paper) !important; backdrop-filter: none !important; }
.mobile-nav-link { color: var(--ink) !important; }

/* ---------- Badge → outline mono ---------- */
.badge {
    border-radius: 2px !important;
    font-family: var(--mono) !important;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-size: 0.68rem !important;
}
.badge-blue { background: transparent !important; color: var(--teal) !important; border: 1px solid var(--teal) !important; }
.badge-cyan { background: transparent !important; color: var(--ink-60) !important; border: 1px solid var(--line) !important; }
.badge-green { background: var(--teal-soft) !important; color: var(--teal) !important; border: 1px solid transparent !important; }
.badge-dark { background: transparent !important; color: rgba(245,245,240,0.7) !important; border: 1px solid var(--line-dark) !important; }

/* ---------- Tabs/filter pills → square editorial ---------- */
.dashboard-tab {
    border-radius: 2px !important;
    border: 1px solid var(--line) !important;
    font-family: var(--mono) !important;
    font-size: 0.75rem !important;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.dashboard-tab.active {
    background: var(--ink) !important;
    color: var(--paper) !important;
    box-shadow: none !important;
}

/* ---------- Trust pill → hairline ---------- */
.trust-pill {
    background: transparent !important;
    border: 1px solid var(--line) !important;
    border-radius: 2px !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    color: var(--ink-60) !important;
    font-family: var(--mono);
    font-size: 0.72rem !important;
    letter-spacing: 0.06em;
}

/* ---------- Footer link color trên ink ---------- */
.footer-link { color: #8FA3B5 !important; }
.footer-link:hover { color: var(--paper) !important; }

/* ---------- Scrollbar → ink ---------- */
::-webkit-scrollbar-thumb { background: var(--ink) !important; border-radius: 0 !important; }

/* ---------- Remap legacy look & feel → flat clinical ---------- */
.icon-tile-gradient {
    background: var(--ink) !important;
    box-shadow: none !important;
    color: var(--paper) !important;
    border-radius: 4px !important;
}
.icon-tile-light { background: var(--teal-soft) !important; color: var(--teal) !important; border-radius: 4px !important; }
.icon-tile-mint { background: var(--teal-soft) !important; color: var(--teal) !important; border-radius: 4px !important; }
.icon-tile-dark { border-radius: 4px !important; }
.icon-tile { border-radius: 4px !important; }

.stat-number {
    background: none !important;
    -webkit-text-fill-color: var(--ink) !important;
    background-clip: unset !important;
    color: var(--ink);
}
.gradient-text, .gradient-text-cyan {
    background: none !important;
    -webkit-text-fill-color: var(--teal) !important;
    background-clip: unset !important;
    color: var(--teal);
}
.glass {
    background: #fff !important;
    border: 1px solid var(--line) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: none !important;
    border-radius: 4px !important;
}
.glass-blue, .glass-dark {
    background: #fff !important;
    border: 1px solid var(--line) !important;
    backdrop-filter: none !important;
    box-shadow: none !important;
}
.card-dark {
    border-radius: 2px !important;
    backdrop-filter: none !important;
}
.card-dark:hover { transform: none !important; box-shadow: none !important; border-color: rgba(245,245,240,0.35) !important; }
.testimonial-card {
    backdrop-filter: none !important;
    border-radius: 2px !important;
    box-shadow: none !important;
}
.pricing-card, .dashboard-frame, .hero-dashboard { border-radius: 2px !important; }
.bg-orb, .hero-bg-orb-1, .hero-bg-orb-2, .cursor-glow { display: none !important; }

/* Ẩn scrollbar ngang trong khối blueprint (mobile) */
.flow-scroll { scrollbar-width: none; -ms-overflow-style: none; }
.flow-scroll::-webkit-scrollbar { display: none; }

@media (max-width: 768px) {
    .vss-row { grid-template-columns: 56px 1fr; }
    .vss-row-arrow { display: none; }
    .ed-hero { padding: 140px 0 64px; }
}