/* ============================================================
   VogiaTech Homepage — Ultra-Clean Light B2B Theme
   Flat Design · No Gradients · WCAG AA · Accessibility-First
   ============================================================ */

/* ── Design Tokens ── */
:root {
    /* Brand Colors — Solid Only (IBM Carbon Blue) */
    --lp-primary: #0F62FE;
    --lp-primary-hover: #0043CE;
    --lp-primary-light: #EDF5FF;
    --lp-primary-bg: #EDF5FF;
    --lp-accent: #0F62FE;
    --lp-success: #24A148;
    --lp-warning: #F1C21B;

    /* Surfaces — No Gradients */
    --lp-bg: #FFFFFF;
    --lp-bg-alt: #F4F4F4;
    --lp-bg-subtle: #E8E8E8;
    --lp-surface: #FFFFFF;
    --lp-border: #E0E0E0;
    --lp-border-hover: #0F62FE;
    --lp-border-subtle: #E0E0E0;

    /* Text — High Contrast (WCAG AA 4.5:1+) */
    --lp-text: #161616;
    --lp-text-secondary: #525252;
    --lp-text-muted: #8D8D8D;
    --lp-text-on-primary: #FFFFFF;

    /* Footer Dark */
    --lp-footer-bg: #0f172a;
    --lp-footer-text: #CBD5E1;
    --lp-footer-heading: #F8FAFC;
    --lp-footer-border: #1E293B;

    /* Spacing (8px grid) */
    --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px;
    --sp-4: 16px; --sp-5: 20px; --sp-6: 24px;
    --sp-8: 32px; --sp-10: 40px; --sp-12: 48px;
    --sp-16: 64px; --sp-20: 80px; --sp-24: 96px;

    /* Typography */
    --font-display: 'Inter', 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Radius — Rounded-sm for buttons, organic for cards */
    --radius-xs: 2px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    --radius-organic: 40px 8px 40px 8px;
    --radius-organic-alt: 8px 40px 8px 40px;

    /* Shadows — Ultra Subtle Only */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-card: 0 1px 4px rgba(0,0,0,0.04);

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast: 180ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
}

/* ── Keyframe Animations ── */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-24px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(24px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}
@keyframes float-gentle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}
@keyframes typing-cursor {
    0%, 100% { border-right-color: var(--lp-primary); }
    50% { border-right-color: transparent; }
}
@keyframes slide-up-fade {
    0% { opacity: 0; transform: translateY(100%); }
    15% { opacity: 1; transform: translateY(0); }
    85% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(-100%); }
}
@keyframes orbit {
    from { transform: rotate(0deg) translateX(120px) rotate(0deg); }
    to { transform: rotate(360deg) translateX(120px) rotate(-360deg); }
}
@keyframes draw-dash {
    to { stroke-dashoffset: 0; }
}
@keyframes chat-bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

/* ── Scroll Animation Classes ── */
.lp-animate {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}
.lp-animate.is-visible {
    opacity: 1;
    transform: translateY(0);
}
.lp-animate-left {
    opacity: 0;
    transform: translateX(-32px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}
.lp-animate-left.is-visible {
    opacity: 1;
    transform: translateX(0);
}
.lp-animate-right {
    opacity: 0;
    transform: translateX(32px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}
.lp-animate-right.is-visible {
    opacity: 1;
    transform: translateX(0);
}
.lp-animate-scale {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}
.lp-animate-scale.is-visible {
    opacity: 1;
    transform: scale(1);
}
/* Staggered children */
.lp-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--duration-normal) var(--ease-out),
                transform var(--duration-normal) var(--ease-out);
}
.lp-stagger.is-visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.lp-stagger.is-visible > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: translateY(0); }
.lp-stagger.is-visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: translateY(0); }
.lp-stagger.is-visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: translateY(0); }
.lp-stagger.is-visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }
.lp-stagger.is-visible > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }

/* ── Base Container ── */
.landing-page {
    font-family: var(--font-body);
    color: var(--lp-text);
    background: var(--lp-bg);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.lp-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp-6);
}

/* ── Section Base ── */
.lp-section {
    padding: var(--sp-20) 0;
    position: relative;
}

.lp-section-header {
    text-align: center;
    margin-bottom: var(--sp-12);
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.lp-section-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: var(--lp-primary-light);
    color: var(--lp-primary);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--sp-4);
    letter-spacing: 0.03em;
    border: 1px solid transparent;
    transition: border-color var(--duration-fast);
}

.lp-section-badge:hover {
    border-color: var(--lp-primary);
}

.lp-section-title {
    font-family: var(--font-display);
    font-size: clamp(1.625rem, 3.5vw, 2.375rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: var(--sp-4);
    color: var(--lp-text);
    letter-spacing: -0.02em;
}

.lp-section-subtitle {
    font-size: 1.0625rem;
    color: var(--lp-text-secondary);
    line-height: 1.7;
    max-width: 560px;
    margin: 0 auto;
}

/* Text accent — solid color, no gradient */
.lp-accent-text {
    color: var(--lp-primary);
}

/* ── Buttons — Flat, No Gradients ── */
.lp-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--lp-primary);
    color: var(--lp-text-on-primary);
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    border: 2px solid var(--lp-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    transition: background var(--duration-fast),
                border-color var(--duration-fast),
                transform var(--duration-fast);
    position: relative;
    line-height: 1.4;
}

.lp-btn-primary:hover {
    background: var(--lp-primary-hover);
    border-color: var(--lp-primary-hover);
    transform: translateY(-1px);
}

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

.lp-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--lp-bg);
    color: var(--lp-text);
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    border: 2px solid var(--lp-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    transition: border-color var(--duration-fast),
                color var(--duration-fast),
                transform var(--duration-fast);
    line-height: 1.4;
}

.lp-btn-secondary:hover {
    border-color: var(--lp-primary);
    color: var(--lp-primary);
    transform: translateY(-1px);
}

.lp-btn-secondary:active {
    transform: translateY(0);
}

/* ═══════════════════════════════════════════
   SECTION 1: HERO — Kinetic Typography
   ═══════════════════════════════════════════ */
.hero-section {
    min-height: calc(100vh - 120px);
    display: flex;
    align-items: center;
    position: relative;
    padding: var(--sp-16) 0 var(--sp-20);
    background: var(--lp-bg);
    overflow: hidden;
}

/* Subtle top-right decorative circle — flat, no gradient */
.hero-section::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 500px;
    height: 500px;
    background: var(--lp-primary-bg);
    border-radius: 50%;
    pointer-events: none;
    opacity: 0.6;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-16);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInLeft 0.7s var(--ease-out);
}

/* Trust badge */
.hero-trust-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--lp-bg-alt);
    border: 1px solid var(--lp-border);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    color: var(--lp-text-secondary);
    margin-bottom: var(--sp-6);
    transition: border-color var(--duration-fast);
}

.hero-trust-badge:hover {
    border-color: var(--lp-primary);
}

.hero-trust-badge .badge-dot {
    width: 8px;
    height: 8px;
    background: var(--lp-success);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

/* Kinetic Typography */
.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.125rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.12;
    margin-bottom: var(--sp-4);
    color: var(--lp-text);
    letter-spacing: -0.03em;
}

.hero-title .highlight {
    color: var(--lp-primary);
    display: inline;
}

/* Rotating text slot */
.hero-rotating-wrapper {
    display: inline-block;
    position: relative;
    height: 1.15em;
    vertical-align: bottom;
    overflow: hidden;
    min-width: 200px;
}

.hero-rotating-text {
    display: block;
    color: var(--lp-primary);
    font-weight: 800;
    animation: slide-up-fade 3s ease-in-out infinite;
    white-space: nowrap;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--lp-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--sp-8);
    max-width: 500px;
}

.hero-cta-group {
    display: flex;
    gap: var(--sp-4);
    flex-wrap: wrap;
    margin-bottom: var(--sp-10);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: var(--sp-10);
}

.hero-stat {
    text-align: left;
}

.hero-stat-value {
    font-family: var(--font-display);
    font-size: 1.875rem;
    font-weight: 800;
    color: var(--lp-primary);
    line-height: 1;
    margin-bottom: var(--sp-1);
}

.hero-stat-label {
    font-size: 0.8125rem;
    color: var(--lp-text-muted);
    font-weight: 500;
}

/* Hero Visual — SVG Tech Ecosystem */
.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeInRight 0.7s var(--ease-out) 0.15s both;
}

.hero-illustration {
    width: 100%;
    max-width: 520px;
    height: auto;
    position: relative;
}

/* Tech ecosystem SVG container */
.hero-tech-ecosystem {
    position: relative;
    width: 100%;
    max-width: 480px;
    aspect-ratio: 1;
}

.hero-tech-ecosystem svg {
    width: 100%;
    height: 100%;
}

/* Floating orbit nodes around ecosystem */
.eco-node {
    position: absolute;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--lp-surface);
    border: 1px solid var(--lp-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: border-color var(--duration-fast), transform var(--duration-fast);
    animation: float-gentle 4s ease-in-out infinite;
}

.eco-node:hover {
    border-color: var(--lp-primary);
    transform: scale(1.1);
}

.eco-node:nth-child(2) { animation-delay: -0.8s; }
.eco-node:nth-child(3) { animation-delay: -1.6s; }
.eco-node:nth-child(4) { animation-delay: -2.4s; }
.eco-node:nth-child(5) { animation-delay: -3.2s; }

.eco-node.top-left     { top: 0; left: 10%; }
.eco-node.top-right    { top: 5%; right: 5%; }
.eco-node.mid-left     { top: 45%; left: -5%; }
.eco-node.mid-right    { top: 40%; right: -5%; }
.eco-node.bottom-center { bottom: 0; left: 50%; transform: translateX(-50%); }

.eco-node svg {
    width: 24px;
    height: 24px;
    color: var(--lp-primary);
}

/* Center hub */
.eco-hub {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--lp-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--lp-text-on-primary);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.875rem;
    text-align: center;
    line-height: 1.3;
    border: 3px solid var(--lp-bg);
}

/* Connection lines in ecosystem */
.eco-lines {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.eco-lines svg {
    width: 100%;
    height: 100%;
}

.eco-lines line {
    stroke: var(--lp-border);
    stroke-width: 1;
    stroke-dasharray: 6 4;
}

/* ═══════════════════════════════════════════
   SECTION 2: CORE SERVICES — Anti-Grid
   ═══════════════════════════════════════════ */
.services-section-lp {
    background: var(--lp-bg-alt);
    position: relative;
}

.services-antigrid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-6);
    position: relative;
}

/* Organic shapes behind grid — purely decorative */
.services-antigrid::before {
    content: '';
    position: absolute;
    top: -40px;
    left: -60px;
    width: 200px;
    height: 200px;
    background: var(--lp-primary-bg);
    border-radius: 60% 40% 50% 50% / 50% 60% 40% 50%;
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
}

.services-antigrid::after {
    content: '';
    position: absolute;
    bottom: -30px;
    right: -40px;
    width: 160px;
    height: 160px;
    background: var(--lp-primary-bg);
    border-radius: 40% 60% 50% 50% / 60% 40% 50% 50%;
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
}

.service-card-lp {
    background: var(--lp-surface);
    border: 1px solid var(--lp-border);
    border-radius: var(--radius-organic);
    padding: var(--sp-8) var(--sp-6);
    transition: border-color var(--duration-normal),
                transform var(--duration-normal);
    position: relative;
    z-index: 1;
    cursor: default;
}

/* Anti-grid stagger — even cards shift down */
.service-card-lp:nth-child(2),
.service-card-lp:nth-child(5) {
    transform: translateY(24px);
}
.service-card-lp:nth-child(2):hover,
.service-card-lp:nth-child(5):hover {
    transform: translateY(20px);
}

/* Alternate organic radius */
.service-card-lp:nth-child(even) {
    border-radius: var(--radius-organic-alt);
}

/* Dark card theme for 3rd card */
.service-card-lp:nth-child(3) {
    background: var(--lp-text);
    border-color: var(--lp-text);
    color: var(--lp-text-on-primary);
}
.service-card-lp:nth-child(3) h3,
.service-card-lp:nth-child(3) p,
.service-card-lp:nth-child(3) .service-features li {
    color: var(--lp-text-on-primary);
}
.service-card-lp:nth-child(3) .service-features li::before {
    color: var(--lp-primary-light);
}
.service-card-lp:nth-child(3) .service-link-lp {
    color: var(--lp-primary-light);
}
.service-card-lp:nth-child(3):hover {
    border-color: var(--lp-primary);
}

/* Blue card theme for 4th card */
.service-card-lp:nth-child(4) {
    background: var(--lp-primary);
    border-color: var(--lp-primary);
    color: var(--lp-text-on-primary);
}
.service-card-lp:nth-child(4) h3,
.service-card-lp:nth-child(4) p,
.service-card-lp:nth-child(4) .service-features li {
    color: var(--lp-text-on-primary);
}
.service-card-lp:nth-child(4) .service-features li::before {
    color: rgba(255,255,255,0.7);
}
.service-card-lp:nth-child(4) .service-link-lp {
    color: rgba(255,255,255,0.9);
}
.service-card-lp:nth-child(4) .service-icon-lp {
    background: rgba(255,255,255,0.15);
    color: var(--lp-text-on-primary);
}
.service-card-lp:nth-child(4):hover {
    border-color: var(--lp-primary-hover);
}

/* Top accent line — solid color */
.service-card-lp::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--lp-primary);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    opacity: 0;
    transition: opacity var(--duration-normal);
}

.service-card-lp:hover {
    border-color: var(--lp-primary);
    transform: translateY(-4px);
}

.service-card-lp:hover::before {
    opacity: 1;
}

.service-icon-lp {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--sp-5);
    transition: transform var(--duration-normal) var(--ease-spring);
}

.service-card-lp:hover .service-icon-lp {
    transform: scale(1.08);
}

/* Icon color variants — solid backgrounds */
.service-icon-lp.blue    { background: var(--lp-primary-light); color: var(--lp-primary); }
.service-icon-lp.emerald { background: #ECFDF5; color: #059669; }
.service-icon-lp.purple  { background: #F3E8FF; color: #7C3AED; }
.service-icon-lp.amber   { background: #FEF3C7; color: #D97706; }
.service-icon-lp.rose    { background: #FFE4E6; color: #E11D48; }
.service-icon-lp.cyan    { background: #E0F7FA; color: #0891B2; }

.service-card-lp h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--sp-2);
    color: var(--lp-text);
}

.service-card-lp p {
    font-size: 0.9375rem;
    color: var(--lp-text-secondary);
    line-height: 1.65;
    margin-bottom: var(--sp-4);
}

.service-link-lp {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--lp-primary);
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    transition: gap var(--duration-normal);
    border-bottom: 1px solid transparent;
}

.service-link-lp:hover {
    gap: 10px;
    border-bottom-color: var(--lp-primary);
}

/* Service features checklist */
.service-features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--sp-4);
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--lp-text-secondary);
    padding: 3px 0;
}

.service-features li::before {
    content: '✓';
    color: var(--lp-primary);
    font-weight: 700;
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* Inline CTA under services */
.section-cta-inline {
    text-align: center;
    margin-top: var(--sp-10);
}

/* ═══════════════════════════════════════════
   SECTION 3: INTERACTIVE SOLUTIONS — Tabs
   ═══════════════════════════════════════════ */
.solutions-section {
    background: var(--lp-bg);
}

.solutions-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--sp-8);
    align-items: start;
}

/* Tab navigation */
.solutions-tabs {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.solutions-tab {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-4) var(--sp-5);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--lp-text-secondary);
    cursor: pointer;
    text-align: left;
    transition: all var(--duration-fast);
    width: 100%;
}

.solutions-tab:hover {
    background: var(--lp-bg-alt);
    color: var(--lp-text);
}

.solutions-tab.active {
    background: var(--lp-primary-light);
    color: var(--lp-primary);
    border-color: var(--lp-primary);
}

.solutions-tab svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Tab content panels */
.solutions-panels {
    position: relative;
    min-height: 400px;
}

.solutions-panel {
    display: none;
    animation: fadeIn 0.3s var(--ease-out);
}

.solutions-panel.active {
    display: block;
}

.panel-content {
    background: var(--lp-bg-alt);
    border: 1px solid var(--lp-border);
    border-radius: var(--radius-lg);
    padding: var(--sp-10);
}

.panel-content h3 {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--lp-text);
    margin-bottom: var(--sp-3);
}

.panel-content p {
    font-size: 1rem;
    color: var(--lp-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--sp-6);
    max-width: 560px;
}

.panel-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-4);
    margin-bottom: var(--sp-6);
}

.panel-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-3);
    padding: var(--sp-4);
    background: var(--lp-surface);
    border: 1px solid var(--lp-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--duration-fast);
}

.panel-feature:hover {
    border-color: var(--lp-primary);
}

.panel-feature-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-xs);
    background: var(--lp-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--lp-primary);
    flex-shrink: 0;
}

.panel-feature-icon svg {
    width: 18px;
    height: 18px;
}

.panel-feature h4 {
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--lp-text);
    margin-bottom: 2px;
}

.panel-feature span {
    font-size: 0.8125rem;
    color: var(--lp-text-muted);
    line-height: 1.5;
}

/* Panel visual / metrics */
.panel-metrics {
    display: flex;
    gap: var(--sp-6);
}

.panel-metric {
    text-align: center;
    padding: var(--sp-4) var(--sp-5);
    background: var(--lp-surface);
    border: 1px solid var(--lp-border);
    border-radius: var(--radius-sm);
    flex: 1;
    transition: border-color var(--duration-fast);
}

.panel-metric:hover {
    border-color: var(--lp-primary);
}

.panel-metric-value {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--lp-primary);
    line-height: 1.2;
}

.panel-metric-label {
    font-size: 0.8125rem;
    color: var(--lp-text-muted);
    margin-top: 4px;
}

/* ═══════════════════════════════════════════
   SECTION 4: WHY CHOOSE US
   ═══════════════════════════════════════════ */
.why-section {
    background: var(--lp-bg-alt);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-6);
}

.why-card {
    display: flex;
    gap: var(--sp-5);
    padding: var(--sp-6);
    background: var(--lp-surface);
    border: 1px solid var(--lp-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--duration-normal),
                transform var(--duration-normal);
}

.why-card:hover {
    border-color: var(--lp-primary);
    transform: translateY(-2px);
}

.why-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--lp-primary-light);
    color: var(--lp-primary);
    transition: transform var(--duration-normal) var(--ease-spring);
}

.why-card:hover .why-icon {
    transform: scale(1.1);
}

.why-content h3 {
    font-family: var(--font-display);
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: var(--sp-2);
    color: var(--lp-text);
}

.why-content p {
    font-size: 0.9375rem;
    color: var(--lp-text-secondary);
    line-height: 1.65;
}

/* ═══════════════════════════════════════════
   SECTION 5: LATEST NEWS / BLOG
   ═══════════════════════════════════════════ */
.news-section {
    background: var(--lp-bg);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-6);
}

.news-card {
    background: var(--lp-surface);
    border: 1px solid var(--lp-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--duration-normal),
                transform var(--duration-normal);
    cursor: pointer;
}

.news-card:hover {
    border-color: var(--lp-primary);
    transform: translateY(-3px);
}

.news-card-image {
    width: 100%;
    height: 200px;
    background: var(--lp-bg-alt);
    overflow: hidden;
    position: relative;
}

.news-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--duration-slow);
}

.news-card:hover .news-card-image img {
    transform: scale(1.04);
}

/* Placeholder for articles without images */
.news-card-image .news-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--lp-primary-light);
    color: var(--lp-primary);
}

.news-card-image .news-placeholder svg {
    width: 48px;
    height: 48px;
    opacity: 0.4;
}

.news-card-body {
    padding: var(--sp-6);
}

.news-card-meta {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    margin-bottom: var(--sp-3);
}

.news-card-category {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--lp-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.news-card-date {
    font-size: 0.75rem;
    color: var(--lp-text-muted);
}

.news-card-meta .meta-dot {
    width: 3px;
    height: 3px;
    background: var(--lp-text-muted);
    border-radius: 50%;
}

.news-card h3 {
    font-family: var(--font-display);
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--lp-text);
    margin-bottom: var(--sp-2);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card p {
    font-size: 0.875rem;
    color: var(--lp-text-secondary);
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--sp-4);
}

.news-read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--lp-primary);
    text-decoration: none;
    transition: gap var(--duration-fast);
    border-bottom: 1px solid transparent;
}

.news-read-more:hover {
    gap: 10px;
    border-bottom-color: var(--lp-primary);
}

.news-read-more svg {
    width: 14px;
    height: 14px;
}

/* ═══════════════════════════════════════════
   SECTION 6: CONTACT / LEAD CAPTURE
   ═══════════════════════════════════════════ */
.contact-section-lp {
    background: var(--lp-bg-alt);
}

.contact-grid-lp {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-12);
    align-items: start;
}

.contact-info-lp h2 {
    font-family: var(--font-display);
    font-size: clamp(1.625rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--lp-text);
    margin-bottom: var(--sp-4);
    line-height: 1.25;
}

.contact-info-lp > p {
    font-size: 1rem;
    color: var(--lp-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--sp-8);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--sp-5);
}

.contact-detail-item {
    display: flex;
    gap: var(--sp-4);
    align-items: flex-start;
}

.contact-detail-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--lp-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--lp-primary);
    flex-shrink: 0;
    transition: transform var(--duration-fast);
}

.contact-detail-item:hover .contact-detail-icon {
    transform: scale(1.08);
}

.contact-detail-text h4 {
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--lp-text);
    margin-bottom: 2px;
}

.contact-detail-text a,
.contact-detail-text p {
    font-size: 0.9375rem;
    color: var(--lp-text-secondary);
    text-decoration: none;
    transition: color var(--duration-fast);
}

.contact-detail-text a:hover {
    color: var(--lp-primary);
}

/* Contact Form */
.contact-form-lp {
    background: var(--lp-surface);
    border: 1px solid var(--lp-border);
    border-radius: var(--radius-lg);
    padding: var(--sp-8);
}

.contact-form-lp h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--lp-text);
    margin-bottom: var(--sp-6);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-4);
}

.form-group-lp {
    margin-bottom: var(--sp-4);
}

.form-group-lp label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--lp-text);
    margin-bottom: 6px;
}

.form-input-lp {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--lp-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--lp-text);
    background: var(--lp-bg);
    transition: border-color var(--duration-fast);
    box-sizing: border-box;
    outline: none;
}

.form-input-lp:focus {
    border-color: var(--lp-primary);
}

.form-input-lp::placeholder {
    color: var(--lp-text-muted);
}

textarea.form-input-lp {
    resize: vertical;
    min-height: 100px;
}

.form-submit-lp {
    width: 100%;
    justify-content: center;
    margin-top: var(--sp-2);
}

/* ═══════════════════════════════════════════
   SECTION 7: AI CHATBOT WIDGET — CSS đã chuyển vào style.css (global)
   ═══════════════════════════════════════════ */

/* ═══════════════════════════════════════════
   STICKY CTA — Preserved from original
   ═══════════════════════════════════════════ */
.sticky-cta {
    position: fixed;
    right: 24px;
    bottom: 100px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 9985;
    opacity: 0;
    transform: translateX(80px);
    pointer-events: none;
    transition: opacity var(--duration-normal) var(--ease-out),
                transform var(--duration-normal) var(--ease-out);
}

.sticky-cta.visible {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

.sticky-cta-item {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: transform var(--duration-fast),
                border-color var(--duration-fast);
    position: relative;
    border: 1px solid var(--lp-border);
    background: var(--lp-surface);
    color: var(--lp-text-secondary);
}

.sticky-cta-item:hover {
    transform: scale(1.1);
    border-color: var(--lp-primary);
    color: var(--lp-primary);
}

.sticky-cta-item .tooltip {
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--lp-text);
    color: var(--lp-text-on-primary);
    padding: 6px 12px;
    border-radius: var(--radius-xs);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-fast);
}

.sticky-cta-item:hover .tooltip {
    opacity: 1;
}

/* Specific sticky buttons */
.sticky-chatbot { display: none; } /* Hidden since we have AI widget */
.sticky-zalo {
    background: var(--lp-surface);
}
.sticky-phone {
    background: var(--lp-surface);
}
.sticky-main-cta {
    background: var(--lp-primary);
    color: var(--lp-text-on-primary);
    border-color: var(--lp-primary);
}
.sticky-main-cta:hover {
    background: var(--lp-primary-hover);
    border-color: var(--lp-primary-hover);
    color: var(--lp-text-on-primary);
}

/* ═══════════════════════════════════════════
   CTA BLOCK (between sections)
   ═══════════════════════════════════════════ */
.cta-section-lp {
    padding: var(--sp-16) 0;
    background: var(--lp-primary-bg);
    position: relative;
}

.cta-content-lp {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content-lp h2 {
    font-family: var(--font-display);
    font-size: clamp(1.625rem, 3.5vw, 2.25rem);
    font-weight: 800;
    margin-bottom: var(--sp-4);
    color: var(--lp-text);
    line-height: 1.25;
}

.cta-content-lp p {
    font-size: 1.0625rem;
    color: var(--lp-text-secondary);
    margin-bottom: var(--sp-8);
    line-height: 1.7;
}

/* ═══════════════════════════════════════════
   RESPONSIVE — Mobile First
   ═══════════════════════════════════════════ */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--sp-10);
        text-align: center;
    }

    .hero-content { animation: fadeInUp 0.7s var(--ease-out); }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-cta-group { justify-content: center; }
    .hero-stats { justify-content: center; }

    .hero-visual {
        order: -1;
        animation: fadeIn 0.7s var(--ease-out);
    }

    .hero-tech-ecosystem {
        max-width: 360px;
        margin: 0 auto;
    }

    .services-antigrid {
        grid-template-columns: repeat(2, 1fr);
    }

    .solutions-layout {
        grid-template-columns: 1fr;
    }

    .solutions-tabs {
        flex-direction: row;
        overflow-x: auto;
        gap: var(--sp-2);
        padding-bottom: var(--sp-2);
        -webkit-overflow-scrolling: touch;
    }

    .solutions-tab {
        white-space: nowrap;
        min-width: auto;
    }

    .panel-features {
        grid-template-columns: 1fr;
    }

    .why-grid {
        grid-template-columns: 1fr;
    }

    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid-lp {
        grid-template-columns: 1fr;
        gap: var(--sp-8);
    }
}

@media (max-width: 768px) {
    :root {
        --sp-16: 48px;
        --sp-20: 56px;
    }

    .lp-container {
        padding: 0 var(--sp-4);
    }

    .hero-section {
        min-height: auto;
        padding: var(--sp-12) 0 var(--sp-16);
    }

    .hero-title {
        font-size: clamp(1.75rem, 7vw, 2.5rem);
    }

    .hero-stats {
        flex-direction: row;
        gap: var(--sp-6);
    }

    .hero-tech-ecosystem {
        max-width: 280px;
    }

    .eco-node {
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }

    .eco-hub {
        width: 72px;
        height: 72px;
        font-size: 0.75rem;
    }

    .services-antigrid {
        grid-template-columns: 1fr;
    }

    .service-card-lp {
        padding: var(--sp-6) var(--sp-5);
    }

    .solutions-panels {
        min-height: auto;
    }

    .panel-content {
        padding: var(--sp-6);
    }

    .panel-metrics {
        flex-direction: column;
        gap: var(--sp-3);
    }

    .news-grid {
        grid-template-columns: 1fr;
    }

    .contact-form-lp {
        padding: var(--sp-6);
    }

    .form-row {
        grid-template-columns: 1fr;
    }


    .sticky-cta {
        right: 16px;
        bottom: 90px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-wrap: wrap;
        gap: var(--sp-4);
    }

    .hero-stat {
        min-width: 80px;
    }

    .hero-cta-group {
        flex-direction: column;
        align-items: stretch;
    }

    .lp-btn-primary,
    .lp-btn-secondary {
        justify-content: center;
    }

    .lp-section-title {
        font-size: clamp(1.375rem, 6vw, 1.75rem);
    }

    .solutions-tabs {
        flex-direction: column;
    }

    .solutions-tab {
        white-space: normal;
    }
}

/* ═══════════════════════════════════════════
   FAQ — Kept for backwards compat
   ═══════════════════════════════════════════ */
.faq-section {
    background: var(--lp-bg);
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-16);
    align-items: start;
}

.faq-info h2 {
    font-family: var(--font-display);
    font-size: clamp(1.625rem, 3.5vw, 2.25rem);
    font-weight: 700;
    margin-bottom: var(--sp-4);
    color: var(--lp-text);
}

.faq-info p {
    font-size: 1rem;
    color: var(--lp-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--sp-6);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
}

.faq-item {
    border: 1px solid var(--lp-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--duration-fast);
    background: var(--lp-surface);
}

.faq-item.active {
    border-color: var(--lp-primary);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--lp-text);
    text-align: left;
    transition: color var(--duration-fast);
    gap: 12px;
}

.faq-question:hover {
    color: var(--lp-primary);
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--lp-text-muted);
    transition: transform var(--duration-fast),
                color var(--duration-fast);
    flex-shrink: 0;
    line-height: 1;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--lp-primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--duration-normal) var(--ease-out);
}

.faq-answer-inner {
    padding: 0 20px 16px;
    font-size: 0.9375rem;
    color: var(--lp-text-secondary);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .faq-grid {
        grid-template-columns: 1fr;
        gap: var(--sp-8);
    }
}

/* ═══════════════════════════════════════════
   FOOTER — Dark Theme 4-Column
   ═══════════════════════════════════════════ */
.footer-lp {
    background: var(--lp-footer-bg);
    color: var(--lp-footer-text);
    padding: var(--sp-16) 0 var(--sp-8);
    font-family: var(--font-body);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: var(--sp-10);
    margin-bottom: var(--sp-12);
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: var(--sp-4);
    text-decoration: none;
}

.footer-brand .footer-logo-icon {
    width: 36px;
    height: 36px;
    background: var(--lp-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--lp-text-on-primary);
}

.footer-brand .footer-logo-icon svg {
    width: 20px;
    height: 20px;
}

.footer-brand .footer-logo-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--lp-footer-heading);
}

.footer-brand > p {
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--lp-footer-text);
    margin-bottom: var(--sp-5);
    max-width: 280px;
}

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

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--lp-footer-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--lp-footer-text);
    text-decoration: none;
    transition: border-color var(--duration-fast), color var(--duration-fast);
}

.footer-social a:hover {
    border-color: var(--lp-primary);
    color: var(--lp-primary);
}

.footer-social a svg {
    width: 16px;
    height: 16px;
}

.footer-col h4 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--lp-footer-heading);
    margin-bottom: var(--sp-5);
    letter-spacing: 0.02em;
}

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

.footer-col ul li {
    margin-bottom: var(--sp-3);
}

.footer-col ul li a {
    font-size: 0.875rem;
    color: var(--lp-footer-text);
    text-decoration: none;
    transition: color var(--duration-fast);
}

.footer-col ul li a:hover {
    color: var(--lp-primary);
}

/* Certifications badges */
.footer-certs {
    display: flex;
    gap: 10px;
    margin-top: var(--sp-4);
    flex-wrap: wrap;
}

.footer-cert-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--lp-footer-border);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--lp-footer-text);
}

.footer-cert-badge svg {
    width: 14px;
    height: 14px;
    color: var(--lp-success);
}

/* Visit stats in footer */
.footer-visit-stats {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
    margin: 0;
}

.footer-visit-stats .stats-item {
    width: 100%;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 6px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
}

.footer-visit-stats .stats-item:hover {
    background: rgba(255, 255, 255, 0.12);
}

.footer-visit-stats .stats-label {
    font-size: 0.8rem;
    color: var(--lp-footer-text);
    font-weight: 500;
}

.footer-visit-stats .stats-value {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--lp-primary);
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: unset;
    background-clip: unset;
}

@media (max-width: 768px) {
    .footer-visit-stats {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    .footer-visit-stats .stats-item {
        flex: 1 1 calc(50% - 0.25rem);
    }
}

/* Footer bottom bar */
.footer-bottom {
    border-top: 1px solid var(--lp-footer-border);
    padding-top: var(--sp-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--lp-text-muted);
}

.footer-bottom-links {
    display: flex;
    gap: var(--sp-5);
}

.footer-bottom-links a {
    font-size: 0.8125rem;
    color: var(--lp-footer-text);
    text-decoration: none;
    transition: color var(--duration-fast);
}

.footer-bottom-links a:hover {
    color: var(--lp-primary);
}

@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--sp-8);
    }
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--sp-6);
    }
    .footer-bottom {
        flex-direction: column;
        gap: var(--sp-3);
        text-align: center;
    }
}

/* ═══════════════════════════════════════════
   PRINT STYLES
   ═══════════════════════════════════════════ */
@media print {
    .sticky-cta,
    .ai-chat-widget,
    .hero-section::before,
    .footer-lp {
        display: none !important;
    }
}
}