/* =============================================
   NSArrows Innovations — Main Stylesheet
   ============================================= */

/* =============================================
   1. CSS CUSTOM PROPERTIES
   ============================================= */
:root {
    --color-bg-primary:    #07111F;
    --color-bg-secondary:  #0B1220;
    --color-bg-section:    #0D1526;
    --color-bg-light:      #F8FAFC;
    --color-bg-card:       rgba(255, 255, 255, 0.04);
    --color-bg-card-hover: rgba(255, 255, 255, 0.07);

    --color-accent-blue:   #2563EB;
    --color-accent-cyan:   #06B6D4;
    --color-accent-teal:   #14B8A6;
    --color-accent-grad:   linear-gradient(135deg, #2563EB 0%, #06B6D4 60%, #14B8A6 100%);
    --color-accent-grad-h: linear-gradient(135deg, #1D4ED8 0%, #0891B2 60%, #0D9488 100%);

    --color-text-on-dark:  #F1F5F9;
    --color-text-secondary:#94A3B8;
    --color-text-muted:    #64748B;
    --color-text-dark:     #111827;
    --color-text-body:     #374151;

    --color-border:        rgba(255, 255, 255, 0.08);
    --color-border-accent: rgba(6, 182, 212, 0.35);
    --color-border-light:  #E5E7EB;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --container-max: 1400px;
    --container-pad: 2.5rem;

    --nav-height: 70px;

    --radius-sm:  0.375rem;
    --radius-md:  0.75rem;
    --radius-lg:  1rem;
    --radius-xl:  1.5rem;
    --radius-2xl: 2rem;

    --shadow-card:       0 4px 24px rgba(0, 0, 0, 0.35);
    --shadow-card-hover: 0 12px 40px rgba(6, 182, 212, 0.18);
    --shadow-btn:        0 4px 16px rgba(37, 99, 235, 0.4);

    --blur-glass: blur(16px);

    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --t-fast: 150ms;
    --t-base: 260ms;
    --t-slow: 420ms;
}

/* =============================================
   2. RESET & BASE
   ============================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-dark);
    background: var(--color-bg-light);
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea, select { font-family: inherit; }

/* =============================================
   3. TYPOGRAPHY
   ============================================= */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.text-gradient {
    background: var(--color-accent-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent-cyan);
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--color-text-body);
    max-width: 600px;
    line-height: 1.7;
}

/* =============================================
   4. LAYOUT UTILITIES
   ============================================= */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

.section {
    padding: 5rem 0;
}

.section--dark {
    background: var(--color-bg-primary);
    color: var(--color-text-on-dark);
}

.section--alt {
    background: var(--color-bg-section);
    color: var(--color-text-on-dark);
}

.section--light {
    background: #fff;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-header .section-subtitle {
    margin: 0 auto;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

/* =============================================
   5. NAVIGATION
   ============================================= */
.site-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-height);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--container-pad);
    max-width: 100%;
    transition: background var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.site-nav.scrolled {
    background: rgba(7, 17, 31, 0.88);
    backdrop-filter: var(--blur-glass);
    -webkit-backdrop-filter: var(--blur-glass);
    box-shadow: 0 1px 0 var(--color-border);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
}

.nav-logo-img {
    height: 44px;
    width: auto;
    max-width: 310px;
    display: block;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius-sm);
    transition: color var(--t-fast), background var(--t-fast);
}

.nav-links a:hover,
.nav-links a.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.nav-links a.active {
    color: var(--color-accent-cyan);
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: background var(--t-fast);
}

.hamburger:hover { background: rgba(255,255,255,0.08); }

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform var(--t-base) var(--ease), opacity var(--t-base);
}

.hamburger--active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger--active span:nth-child(2) { opacity: 0; }
.hamburger--active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============================================
   6. BUTTONS
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
    white-space: nowrap;
    line-height: 1;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
    background: var(--color-accent-grad);
    color: #fff;
    box-shadow: var(--shadow-btn);
}
.btn-primary:hover {
    background: var(--color-accent-grad-h);
    box-shadow: 0 6px 24px rgba(37, 99, 235, 0.5);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.25);
}
.btn-secondary:hover {
    border-color: var(--color-accent-cyan);
    color: var(--color-accent-cyan);
    background: rgba(6, 182, 212, 0.06);
}

.btn-outline-blue {
    background: transparent;
    color: var(--color-accent-blue);
    border: 1.5px solid var(--color-accent-blue);
}
.btn-outline-blue:hover {
    background: var(--color-accent-blue);
    color: #fff;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.0625rem;
}

/* =============================================
   7. GLASSMORPHISM CARDS
   ============================================= */
.card-glass {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    backdrop-filter: var(--blur-glass);
    -webkit-backdrop-filter: var(--blur-glass);
    box-shadow: var(--shadow-card);
    padding: 2rem;
    transition: transform var(--t-base) var(--ease),
                box-shadow var(--t-base) var(--ease),
                border-color var(--t-base) var(--ease),
                background var(--t-base) var(--ease);
}

.card-glass:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-border-accent);
    background: var(--color-bg-card-hover);
}

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    background: rgba(6, 182, 212, 0.12);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.card-glass h3 {
    font-size: 1.125rem;
    color: var(--color-text-on-dark);
    margin-bottom: 0.625rem;
}

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

/* =============================================
   8. HERO SECTION
   ============================================= */
.hero {
    min-height: 100vh;
    background: var(--color-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--nav-height);
}

.hero::before,
.hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.hero::before {
    width: 70vmax;
    height: 70vmax;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, rgba(37, 99, 235, 0.07) 40%, transparent 70%);
    top: -25%;
    right: -25%;
    animation: orbFloat 14s ease-in-out infinite alternate;
}

.hero::after {
    width: 50vmax;
    height: 50vmax;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.07) 0%, transparent 65%);
    bottom: -20%;
    left: -15%;
    animation: orbFloat 18s ease-in-out infinite alternate-reverse;
}

@keyframes orbFloat {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(-4%, 6%) scale(1.08); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 4rem var(--container-pad) 5rem;
    max-width: 860px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.25);
    border-radius: 100px;
    padding: 0.375rem 1rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-accent-cyan);
    margin-bottom: 1.75rem;
    letter-spacing: 0.03em;
}

.hero-badge-dot {
    width: 7px;
    height: 7px;
    background: var(--color-accent-cyan);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(0.85); }
}

.hero h1 {
    font-size: clamp(2.25rem, 6vw, 4rem);
    font-weight: 800;
    color: var(--color-text-on-dark);
    line-height: 1.12;
    margin-bottom: 1.25rem;
    letter-spacing: -0.03em;
}

.hero-sub {
    font-size: clamp(1rem, 2vw, 1.1875rem);
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 660px;
    margin: 0 auto 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    z-index: 1;
}

.hero-scroll-line {
    width: 1px;
    height: 36px;
    background: linear-gradient(to bottom, transparent, var(--color-accent-cyan));
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%   { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50%  { opacity: 1; }
    100% { opacity: 0; transform: scaleY(1); transform-origin: top; }
}

/* Page-level hero (inner pages) */
.page-hero {
    background: var(--color-bg-primary);
    padding: calc(var(--nav-height) + 3.5rem) 0 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 60% 0%, rgba(37, 99, 235, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.page-hero-content { position: relative; z-index: 1; }

.page-hero h1 {
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 800;
    color: var(--color-text-on-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
}

.page-hero p {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    max-width: 580px;
    margin: 0 auto;
    line-height: 1.7;
}

/* =============================================
   9. TRUST STRIP
   ============================================= */
.trust-strip {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 1.75rem 0;
}

.trust-strip-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.trust-item-icon {
    font-size: 1.125rem;
    color: var(--color-accent-cyan);
}

/* =============================================
   10. SERVICE CARDS
   ============================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.service-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent-cyan);
    margin-top: 1.25rem;
    transition: gap var(--t-fast);
}

.service-card:hover .card-link { gap: 0.625rem; }

/* =============================================
   11. PRODUCT CARDS
   ============================================= */
.product-card-featured {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
    border: 1px solid rgba(37, 99, 235, 0.3);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.product-card-featured::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 65%);
    pointer-events: none;
}

.product-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: var(--color-accent-grad);
    border-radius: 100px;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 1rem;
}

.product-card-featured h3 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-text-on-dark);
    margin-bottom: 0.75rem;
}

.product-card-featured p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.product-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

.product-visual {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    text-align: center;
    flex-direction: column;
    gap: 0.75rem;
}

.product-visual-icon {
    font-size: 3rem;
    opacity: 0.5;
}

.product-coming-soon {
    opacity: 0.65;
    cursor: default;
}

.product-coming-soon:hover {
    transform: none;
    box-shadow: var(--shadow-card);
    border-color: var(--color-border);
    background: var(--color-bg-card);
}

.badge-coming-soon {
    display: inline-flex;
    background: rgba(100, 116, 139, 0.2);
    border: 1px solid rgba(100, 116, 139, 0.3);
    border-radius: 100px;
    padding: 0.2rem 0.625rem;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-text-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 0.875rem;
}

/* =============================================
   12. WHY / FEATURE GRID
   ============================================= */
.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.why-card {
    padding: 2rem;
    border-radius: var(--radius-lg);
    background: #fff;
    border: 1px solid var(--color-border-light);
    box-shadow: 0 2px 12px rgba(0,0,0,0.05);
    transition: transform var(--t-base) var(--ease), box-shadow var(--t-base);
}

.why-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.why-card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.why-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 0.5rem;
}

.why-card p {
    font-size: 0.9rem;
    color: var(--color-text-body);
    line-height: 1.6;
}

/* =============================================
   13. FOUNDER SECTION
   ============================================= */
.founder-section {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 4rem;
    align-items: center;
}

.founder-photo-wrap {
    position: relative;
}

.founder-photo {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border-radius: var(--radius-xl);
}

.founder-photo-placeholder {
    width: 100%;
    aspect-ratio: 3 / 4;
    background: linear-gradient(135deg, rgba(37,99,235,0.15), rgba(6,182,212,0.1));
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    gap: 0.75rem;
    font-size: 0.875rem;
}

.founder-photo-placeholder span { font-size: 3rem; }

.founder-info { }

.founder-name {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-text-on-dark);
    margin-bottom: 0.375rem;
}

.founder-title {
    font-size: 0.9375rem;
    color: var(--color-accent-cyan);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.founder-bio {
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: 1.75rem;
}

.experience-logos {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    margin-top: 1.25rem;
}

.exp-tag {
    background: rgba(255,255,255,0.07);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.375rem 0.875rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: border-color var(--t-fast), color var(--t-fast);
}

.exp-tag:hover {
    border-color: var(--color-border-accent);
    color: var(--color-accent-cyan);
}

/* =============================================
   14. STEPS / HOW WE WORK
   ============================================= */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    position: relative;
}

.step-card {
    text-align: center;
    padding: 2rem 1.5rem;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--color-accent-grad);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    font-weight: 800;
    color: #fff;
    margin: 0 auto 1.25rem;
}

.step-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-on-dark);
    margin-bottom: 0.5rem;
}

.step-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* =============================================
   15. CTA BANNER
   ============================================= */
.cta-banner {
    background: var(--color-accent-grad);
    border-radius: var(--radius-xl);
    padding: 3.5rem 2.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 70% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
    pointer-events: none;
}

.cta-banner h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 800;
    color: #fff;
    margin-bottom: 0.75rem;
}

.cta-banner p {
    color: rgba(255,255,255,0.85);
    font-size: 1.0625rem;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-banner .btn-secondary {
    border-color: rgba(255,255,255,0.5);
    color: #fff;
}

.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.btn-white {
    background: #fff;
    color: var(--color-accent-blue);
    font-weight: 700;
}

.btn-white:hover {
    background: #F1F5F9;
    color: var(--color-accent-blue);
}

/* =============================================
   16. CONTACT FORM
   ============================================= */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-on-dark);
    margin-bottom: 0.75rem;
}

.contact-info p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.contact-detail {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.contact-detail-icon {
    width: 40px;
    height: 40px;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.contact-detail-text strong {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.125rem;
}

.contact-detail-text span {
    font-size: 0.9375rem;
    color: var(--color-text-on-dark);
}

.contact-form-wrap {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

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

.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 0.4rem;
    letter-spacing: 0.03em;
}

.form-control {
    width: 100%;
    background: rgba(255,255,255,0.05);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    color: var(--color-text-on-dark);
    transition: border-color var(--t-fast), background var(--t-fast);
    outline: none;
}

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

.form-control:focus {
    border-color: var(--color-accent-cyan);
    background: rgba(6, 182, 212, 0.04);
}

select.form-control option {
    background: var(--color-bg-secondary);
    color: var(--color-text-on-dark);
}

textarea.form-control { resize: vertical; min-height: 130px; }

.field-error {
    display: block;
    font-size: 0.8rem;
    color: #F87171;
    margin-top: 0.3rem;
    min-height: 1em;
}

.form-message {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
    font-size: 0.9375rem;
    font-weight: 500;
}

.form-message--success {
    background: rgba(20, 184, 166, 0.12);
    border: 1px solid rgba(20, 184, 166, 0.3);
    color: #5EEAD4;
}

.form-message--error {
    background: rgba(248, 113, 113, 0.1);
    border: 1px solid rgba(248, 113, 113, 0.3);
    color: #FCA5A5;
}

/* =============================================
   17. OS CLEANER PAGE
   ============================================= */
.oscleaner-hero {
    background: var(--color-bg-primary);
    padding: calc(var(--nav-height) + 3.5rem) 0 4rem;
    position: relative;
    overflow: hidden;
}

.oscleaner-hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(37,99,235,0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 20%, rgba(6,182,212,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.oscleaner-hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.version-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: rgba(37,99,235,0.15);
    border: 1px solid rgba(37,99,235,0.3);
    border-radius: 100px;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent-cyan);
    margin-bottom: 1.25rem;
}

.oscleaner-hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--color-text-on-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
}

.oscleaner-hero p {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.trust-note {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    background: rgba(20, 184, 166, 0.08);
    border: 1px solid rgba(20, 184, 166, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    margin-bottom: 1.75rem;
    font-size: 0.9rem;
    color: #5EEAD4;
    line-height: 1.6;
}

.trust-note-icon { font-size: 1.25rem; flex-shrink: 0; margin-top: 0.1rem; }

.download-buttons { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.warning-box {
    background: rgba(251, 191, 36, 0.07);
    border: 1px solid rgba(251, 191, 36, 0.25);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.warning-box-icon { font-size: 1.5rem; flex-shrink: 0; }

.warning-box h4 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: #FCD34D;
    margin-bottom: 0.375rem;
}

.warning-box p {
    font-size: 0.875rem;
    color: rgba(253, 230, 138, 0.8);
    line-height: 1.6;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 0;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text-on-dark);
    text-align: left;
    cursor: pointer;
    transition: color var(--t-fast);
}

.faq-question:hover { color: var(--color-accent-cyan); }

.faq-chevron {
    font-size: 1.25rem;
    color: var(--color-accent-cyan);
    transition: transform var(--t-base) var(--ease);
    flex-shrink: 0;
}

.faq-answer {
    display: none;
    padding-bottom: 1.25rem;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-chevron { transform: rotate(180deg); }

/* =============================================
   18. TIMELINE
   ============================================= */
.timeline {
    position: relative;
    padding-left: 2.5rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-accent-blue), var(--color-accent-teal));
}

.timeline-item {
    position: relative;
    padding-bottom: 2.5rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2rem;
    top: 0.3rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-accent-cyan);
    border: 2px solid var(--color-bg-primary);
    box-shadow: 0 0 0 3px rgba(6,182,212,0.2);
}

.timeline-year {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-accent-cyan);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.25rem;
}

.timeline-item h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-on-dark);
    margin-bottom: 0.375rem;
}

.timeline-item p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* =============================================
   19. INDUSTRIES TAGS
   ============================================= */
.industry-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    justify-content: center;
}

.industry-tag {
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.25);
    border-radius: 100px;
    padding: 0.5rem 1.125rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-accent-cyan);
    transition: background var(--t-fast), border-color var(--t-fast);
}

.industry-tag:hover {
    background: rgba(37, 99, 235, 0.18);
    border-color: var(--color-accent-cyan);
}

/* =============================================
   20. FOOTER
   ============================================= */
.site-footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    margin-bottom: 0.75rem;
}

.footer-logo-icon {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    border-radius: 8px;
    display: block;
}

.footer-logo-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.footer-logo-name {
    font-size: 1.5rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
    letter-spacing: -0.02em;
}

.footer-logo-tagline {
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--color-accent-cyan);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-top: 1rem;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.footer-links { display: flex; flex-direction: column; gap: 0.625rem; }

.footer-links a {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    transition: color var(--t-fast);
}

.footer-links a:hover { color: var(--color-accent-cyan); }

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
}

.footer-bottom-links a {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    transition: color var(--t-fast);
}

.footer-bottom-links a:hover { color: var(--color-accent-cyan); }

/* =============================================
   21. SCROLL REVEAL ANIMATIONS
   ============================================= */
[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

[data-reveal="left"]  { transform: translateX(-28px); }
[data-reveal="right"] { transform: translateX(28px); }
[data-reveal="scale"] { transform: scale(0.95); }

[data-reveal].revealed {
    opacity: 1;
    transform: translate(0) scale(1);
}

[data-reveal-delay="100"] { transition-delay: 0.1s; }
[data-reveal-delay="200"] { transition-delay: 0.2s; }
[data-reveal-delay="300"] { transition-delay: 0.3s; }
[data-reveal-delay="400"] { transition-delay: 0.4s; }

/* =============================================
   22. UTILITY CLASSES
   ============================================= */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0);
    white-space: nowrap; border: 0;
}

/* Separator */
.divider {
    width: 60px;
    height: 3px;
    background: var(--color-accent-grad);
    border-radius: 2px;
    margin: 1.25rem auto 0;
}

.divider--left { margin-left: 0; }

/* Screenshots placeholder */
.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.screenshot-placeholder {
    aspect-ratio: 16/10;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    text-align: center;
    flex-direction: column;
    gap: 0.5rem;
}

.screenshot-placeholder span { font-size: 2rem; opacity: 0.4; }

/* Values cards */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.value-card {
    text-align: center;
    padding: 2rem 1.25rem;
}

.value-card .card-icon {
    margin: 0 auto 1.25rem;
}

.value-card h3 {
    font-size: 1rem;
    font-weight: 700;
}

/* System requirements table */
.req-table {
    width: 100%;
    border-collapse: collapse;
}

.req-table th,
.req-table td {
    padding: 0.875rem 1.25rem;
    text-align: left;
    font-size: 0.9375rem;
    border-bottom: 1px solid var(--color-border);
}

.req-table th {
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.req-table td { color: var(--color-text-on-dark); }

.req-table tr:last-child td,
.req-table tr:last-child th { border-bottom: none; }

/* Bullet list */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.55;
}

.feature-list li::before {
    content: '✓';
    color: var(--color-accent-teal);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 0.05rem;
}

/* =============================================
   23. SOCIAL ICONS
   ============================================= */
.social-icon-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: rgba(255,255,255,0.03);
    transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
    white-space: nowrap;
}

.social-icon-link:hover {
    color: var(--color-accent-cyan);
    border-color: var(--color-border-accent);
    background: rgba(6,182,212,0.06);
}

.social-icon-link--yt:hover {
    color: #FF0000;
    border-color: rgba(255,0,0,0.35);
    background: rgba(255,0,0,0.06);
}

.social-icon-link--wa:hover {
    color: #25D366;
    border-color: rgba(37,211,102,0.35);
    background: rgba(37,211,102,0.06);
}

/* ── Floating WhatsApp Button ────────────────── */

/* ═══════════════════════════════════════════════
   AI CHATBOT WIDGET
   ═══════════════════════════════════════════════ */

/* ── Launcher button ─────────────────────────── */
#ns-chat-launcher {
    position: fixed;
    bottom: 5.5rem;
    right: 2rem;
    z-index: 900;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-accent-grad);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.5);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#ns-chat-launcher:hover {
    transform: scale(1.08);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.55);
}

#ns-chat-launcher svg { display: block; }

/* ── Chat window ─────────────────────────────── */
#ns-chat-window {
    position: fixed;
    bottom: 10rem;
    right: 2rem;
    z-index: 950;
    width: 360px;
    height: 480px;
    background: rgba(11, 18, 32, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--color-border-accent);
    border-radius: var(--radius-xl);
    box-shadow: 0 16px 60px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(6,182,212,0.08);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    transform: translateY(12px) scale(0.97);
    pointer-events: none;
    transition: opacity 0.22s ease, transform 0.22s ease;
}

#ns-chat-window.ns-chat-open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: all;
}

/* ── Header ──────────────────────────────────── */
.ns-chat-header {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.875rem 1rem;
    background: linear-gradient(135deg, rgba(37,99,235,0.25), rgba(6,182,212,0.15));
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.ns-chat-header-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 6px #4ade80;
    flex-shrink: 0;
}

.ns-chat-header-title {
    flex: 1;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-on-dark);
}

.ns-chat-header-sub {
    display: block;
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--color-text-muted);
}

.ns-chat-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    line-height: 1;
    font-size: 1.25rem;
    transition: color 0.15s;
}

.ns-chat-close:hover { color: var(--color-text-on-dark); }

/* ── Mode chips ──────────────────────────────── */
.ns-chat-modes {
    padding: 0.75rem 1rem 0;
    flex-shrink: 0;
}

.ns-chat-modes p {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.ns-chat-mode-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.ns-chat-chip {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    padding: 0.3rem 0.625rem;
    border-radius: 2rem;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
    white-space: nowrap;
}

.ns-chat-chip:hover {
    background: rgba(6,182,212,0.12);
    border-color: var(--color-accent-cyan);
    color: var(--color-accent-cyan);
}

.ns-chat-chip.active {
    background: var(--color-accent-cyan);
    border-color: var(--color-accent-cyan);
    color: #07111F;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(6,182,212,0.4);
}

/* ── Messages ────────────────────────────────── */
.ns-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 0.875rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.ns-chat-messages::-webkit-scrollbar { width: 4px; }
.ns-chat-messages::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 2px; }

.ns-chat-bubble {
    max-width: 85%;
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-md);
    font-size: 0.8375rem;
    line-height: 1.55;
    word-break: break-word;
}

.ns-chat-bubble--bot {
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.ns-chat-bubble--user {
    background: linear-gradient(135deg, rgba(37,99,235,0.35), rgba(6,182,212,0.25));
    border: 1px solid rgba(6,182,212,0.2);
    color: var(--color-text-on-dark);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

/* ── Typing indicator ────────────────────────── */
.ns-chat-typing {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0.625rem 0.875rem;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    border-bottom-left-radius: 4px;
    align-self: flex-start;
    width: fit-content;
}

.ns-chat-typing span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent-cyan);
    opacity: 0.4;
    animation: ns-dot-bounce 1.2s infinite ease-in-out;
}

.ns-chat-typing span:nth-child(1) { animation-delay: 0s; }
.ns-chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.ns-chat-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes ns-dot-bounce {
    0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
    40%           { transform: translateY(-5px); opacity: 1; }
}

/* ── Input row ───────────────────────────────── */
.ns-chat-input-row {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
    background: rgba(7,17,31,0.6);
}

#ns-chat-input {
    flex: 1;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-on-dark);
    font-size: 0.8375rem;
    font-family: var(--font-family);
    padding: 0.5rem 0.75rem;
    resize: none;
    max-height: 96px;
    min-height: 38px;
    line-height: 1.5;
    transition: border-color 0.15s;
    outline: none;
}

#ns-chat-input:focus {
    border-color: var(--color-border-accent);
}

#ns-chat-input::placeholder {
    color: var(--color-text-muted);
}

#ns-chat-send {
    background: var(--color-accent-grad);
    border: none;
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: opacity 0.15s, transform 0.15s;
}

#ns-chat-send:hover:not(:disabled) { transform: scale(1.05); }
#ns-chat-send:disabled { opacity: 0.45; cursor: not-allowed; }
#ns-chat-send svg { display: block; }

/* Standalone social icon (no label) */
.social-icon-bare {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.social-icon-bare:hover {
    color: var(--color-accent-cyan);
    border-color: var(--color-border-accent);
    background: rgba(6,182,212,0.06);
}

/* YouTube channel feature card */
.youtube-card {
    background: linear-gradient(135deg, rgba(255,0,0,0.08) 0%, rgba(7,17,31,1) 60%);
    border: 1px solid rgba(255,0,0,0.2);
    border-radius: var(--radius-xl);
    padding: 3rem 2.5rem;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2.5rem;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.youtube-card::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -5%;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(255,0,0,0.08) 0%, transparent 65%);
    pointer-events: none;
}

.youtube-logo {
    width: 80px;
    height: 80px;
    background: #FF0000;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 8px 32px rgba(255,0,0,0.3);
}

.youtube-logo svg { width: 44px; height: 44px; fill: #fff; }

.youtube-info h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text-on-dark);
    margin-bottom: 0.5rem;
}

.youtube-info p {
    color: var(--color-text-secondary);
    line-height: 1.65;
    margin-bottom: 1.5rem;
    max-width: 540px;
}

.youtube-actions { display: flex; gap: 0.875rem; flex-wrap: wrap; align-items: center; }

.btn-youtube {
    background: #FF0000;
    color: #fff;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
    box-shadow: 0 4px 16px rgba(255,0,0,0.35);
}

.btn-youtube:hover {
    background: #CC0000;
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(255,0,0,0.45);
}

/* =============================================
   24. HERO — SPLIT LAYOUT (text left, illustration right)
   ============================================= */
.hero-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

.hero-split .hero-content {
    text-align: left;
    padding: 2rem 0 3rem;
    max-width: none;
    margin: 0;
}

.hero-split .hero-actions { justify-content: flex-start; }

.hero-illustration {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-illustration svg,
.hero-illustration img {
    width: 100%;
    max-width: 580px;
    height: auto;
    filter: drop-shadow(0 24px 64px rgba(6,182,212,0.18));
    animation: floatIllustration 6s ease-in-out infinite;
}

@keyframes floatIllustration {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-14px); }
}

/* =============================================
   24. SECTION ILLUSTRATIONS
   ============================================= */
.section-with-illustration {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.section-with-illustration.reverse { direction: rtl; }
.section-with-illustration.reverse > * { direction: ltr; }

.section-illustration svg {
    width: 100%;
    height: auto;
    opacity: 0.92;
}

/* Decorative dot-grid background pattern */
.bg-dots {
    position: relative;
}

.bg-dots::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(6,182,212,0.12) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
    z-index: 0;
}

.bg-dots > * { position: relative; z-index: 1; }

/* Inline stat cards inside illustrations */
.stat-float {
    position: absolute;
    background: rgba(255,255,255,0.07);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.stat-float-icon { font-size: 1.25rem; }

.stat-float-text strong {
    display: block;
    font-size: 1rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.stat-float-text span {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

/* =============================================
   25. BLOG
   ============================================= */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.blog-card {
    background: #fff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 2px 16px rgba(0,0,0,0.06);
    transition: transform var(--t-base) var(--ease), box-shadow var(--t-base);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}

.blog-card-thumb {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--color-bg-secondary);
    position: relative;
}

.blog-card-thumb svg,
.blog-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--t-slow) var(--ease);
}

.blog-card:hover .blog-card-thumb svg,
.blog-card:hover .blog-card-thumb img {
    transform: scale(1.04);
}

.blog-card-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-tag {
    display: inline-flex;
    background: rgba(37,99,235,0.08);
    border: 1px solid rgba(37,99,235,0.15);
    border-radius: 100px;
    padding: 0.2rem 0.625rem;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-accent-blue);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.blog-card-body h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-text-dark);
    line-height: 1.35;
    margin-bottom: 0.625rem;
    flex: 1;
}

.blog-card-body p {
    font-size: 0.875rem;
    color: var(--color-text-body);
    line-height: 1.65;
    margin-bottom: 1.25rem;
}

.blog-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border-light);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.blog-read-more {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent-blue);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: gap var(--t-fast);
}

.blog-card:hover .blog-read-more { gap: 0.5rem; }

/* Blog hero (dark, matches other page heroes) */
.blog-card-dark {
    background: var(--color-bg-card);
    border-color: var(--color-border);
}

.blog-card-dark .blog-card-body h3 { color: var(--color-text-on-dark); }
.blog-card-dark .blog-card-body p  { color: var(--color-text-secondary); }
.blog-card-dark .blog-meta          { border-color: var(--color-border); color: var(--color-text-muted); }
.blog-card-dark .blog-read-more     { color: var(--color-accent-cyan); }

/* Single blog post */
.blog-post-body {
    max-width: 760px;
    margin: 0 auto;
}

.blog-post-body h2 { font-size: 1.5rem; margin: 2rem 0 0.75rem; color: var(--color-text-dark); }
.blog-post-body h3 { font-size: 1.125rem; margin: 1.5rem 0 0.5rem; color: var(--color-text-dark); }
.blog-post-body p  { color: var(--color-text-body); line-height: 1.8; margin-bottom: 1.125rem; }
.blog-post-body ul { margin: 0 0 1.125rem 1.5rem; }
.blog-post-body ul li { color: var(--color-text-body); line-height: 1.7; margin-bottom: 0.375rem; list-style: disc; }
.blog-post-body blockquote {
    border-left: 3px solid var(--color-accent-cyan);
    padding: 0.875rem 1.25rem;
    margin: 1.5rem 0;
    background: rgba(6,182,212,0.05);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--color-text-body);
    font-style: italic;
}