/* ==========================================================================
   YNK-Tech USA — Snowflake-Inspired Design System
   Background: Dark navy / black
   Accent: #29B5E8 (Snowflake blue) + teal glow
   Fonts: Montserrat (headlines), Inter (body)
   ========================================================================== */

/* --- CSS Custom Properties --- */
:root {
    --color-bg-primary: #0b1120;
    --color-bg-secondary: #0f172a;
    --color-bg-card: #131c31;
    --color-bg-card-hover: #182440;
    --color-accent: #29B5E8;
    --color-accent-light: #5ccef5;
    --color-accent-dark: #1a8bb5;
    --color-teal: #06b6d4;
    --color-text-primary: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-border: rgba(41, 181, 232, 0.12);
    --color-border-hover: rgba(41, 181, 232, 0.3);
    --color-glow: rgba(41, 181, 232, 0.15);
    --color-glow-strong: rgba(41, 181, 232, 0.25);
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s ease;
    --container-max: 1200px;
    --nav-height: 120px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

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

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Section Shared --- */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 16px;
    padding: 6px 16px;
    border: 1px solid var(--color-border);
    border-radius: 100px;
    background: rgba(41, 181, 232, 0.06);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    color: var(--color-text-primary);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 600;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-teal));
    color: #fff;
    box-shadow: 0 4px 20px rgba(41, 181, 232, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(41, 181, 232, 0.45);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-hover);
}

.btn-secondary:hover {
    background: rgba(41, 181, 232, 0.08);
    border-color: var(--color-accent);
    color: var(--color-accent-light);
}

.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
}

.btn-outline:hover {
    background: rgba(41, 181, 232, 0.1);
    box-shadow: 0 0 20px rgba(41, 181, 232, 0.15);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 16px;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    transition: all var(--transition-base);
    background: rgba(11, 17, 32, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(11, 17, 32, 0.92);
    border-bottom-color: var(--color-border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo img {
    height: 250px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-link {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-text-primary);
    background: rgba(41, 181, 232, 0.06);
}

.nav-cta {
    background: linear-gradient(135deg, var(--color-accent), var(--color-teal));
    color: #fff !important;
    padding: 10px 24px;
    margin-left: 8px;
    border-radius: var(--radius-sm);
}

.nav-cta:hover {
    box-shadow: 0 4px 20px rgba(41, 181, 232, 0.35);
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-height) + 40px) 0 80px;
    overflow: hidden;
}

.hero-bg-effects {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

/* Circuit-board grid background */
.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(41, 181, 232, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(41, 181, 232, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 70%);
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
}

.hero-glow--1 {
    width: 600px;
    height: 600px;
    top: -10%;
    right: -5%;
    background: radial-gradient(circle, rgba(41, 181, 232, 0.12) 0%, transparent 70%);
    animation: glowPulse 8s ease-in-out infinite;
}

.hero-glow--2 {
    width: 500px;
    height: 500px;
    bottom: -10%;
    left: -10%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
    animation: glowPulse 10s ease-in-out infinite reverse;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.15); }
}

/* Floating circuit dots */
.hero-circuit-dots {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle 2px, rgba(41, 181, 232, 0.2) 100%, transparent 100%);
    background-size: 60px 60px;
    background-position: 30px 30px;
    mask-image: radial-gradient(ellipse 50% 50% at 50% 50%, black 20%, transparent 60%);
    -webkit-mask-image: radial-gradient(ellipse 50% 50% at 50% 50%, black 20%, transparent 60%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
}

.hero-headline {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--color-text-primary);
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light), var(--color-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtext {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollDrift 2s ease-in-out infinite;
}

@keyframes scrollDrift {
    0%, 100% { opacity: 0.3; height: 50px; }
    50% { opacity: 1; height: 60px; }
}

/* ==========================================================================
   TRUST STRIP
   ========================================================================== */
.trust-strip {
    padding: 80px 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.trust-heading {
    text-align: center;
    font-family: var(--font-heading);
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 700;
    color: var(--color-text-secondary);
    margin-bottom: 48px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.trust-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    padding: 32px 16px;
    border-radius: var(--radius-md);
    background: rgba(41, 181, 232, 0.03);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.trust-item:hover {
    border-color: var(--color-border-hover);
    background: rgba(41, 181, 232, 0.06);
    transform: translateY(-4px);
}

.trust-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.trust-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
}

.trust-item span {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary);
}

/* ==========================================================================
   SERVICES
   ========================================================================== */
.services {
    padding: 120px 0;
}

.services-category {
    margin-bottom: 80px;
}

.services-category:last-child {
    margin-bottom: 0;
}

.services-category-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
}

.category-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(41, 181, 232, 0.08);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.category-icon svg {
    width: 26px;
    height: 26px;
    color: var(--color-accent);
}

.category-title {
    font-family: var(--font-heading);
    font-size: clamp(1.4rem, 3vw, 1.75rem);
    font-weight: 700;
    color: var(--color-text-primary);
}

.category-subtitle {
    font-size: 15px;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.services-grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.service-card {
    position: relative;
    padding: 36px 28px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    overflow: hidden;
}

.service-card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, var(--color-glow) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
}

.service-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 40px var(--color-glow);
}

.service-card:hover .service-card-glow {
    opacity: 1;
}

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(41, 181, 232, 0.12), rgba(6, 182, 212, 0.08));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.service-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent);
}

.service-card h4 {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 14px;
    line-height: 1.65;
    color: var(--color-text-secondary);
}

.services-cta {
    text-align: center;
    margin-top: 40px;
}

/* ==========================================================================
   DIFFERENTIATOR
   ========================================================================== */
.differentiator {
    padding: 120px 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.diff-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.diff-content .section-tag {
    margin-bottom: 16px;
}

.diff-content .section-title {
    margin-bottom: 24px;
}

.diff-text {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: 32px;
}

.diff-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.diff-list li {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 16px;
    color: var(--color-text-primary);
    font-weight: 500;
}

.diff-check {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(41, 181, 232, 0.1);
    border-radius: 50%;
    flex-shrink: 0;
}

.diff-check svg {
    width: 16px;
    height: 16px;
    color: var(--color-accent);
}

.diff-result {
    padding: 20px 24px;
    background: rgba(41, 181, 232, 0.06);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--color-text-primary);
}

.diff-result-label {
    display: inline-block;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-accent);
    margin-right: 8px;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 1px;
}

/* Animated circuit rings around logo */
.diff-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.diff-circuit-graphic {
    position: relative;
    width: 360px;
    height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.circuit-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--color-border);
}

.circuit-ring--1 {
    width: 100%;
    height: 100%;
    border-color: rgba(41, 181, 232, 0.08);
    animation: ringRotate 30s linear infinite;
}

.circuit-ring--2 {
    width: 75%;
    height: 75%;
    border-color: rgba(41, 181, 232, 0.12);
    border-style: dashed;
    animation: ringRotate 20s linear infinite reverse;
}

.circuit-ring--3 {
    width: 50%;
    height: 50%;
    border-color: rgba(41, 181, 232, 0.18);
    animation: ringRotate 15s linear infinite;
}

/* Glowing dots on rings */
.circuit-ring--1::before,
.circuit-ring--2::before,
.circuit-ring--3::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--color-accent);
}

.circuit-ring--2::after,
.circuit-ring--3::after {
    content: '';
    position: absolute;
    bottom: -4px;
    right: 25%;
    width: 6px;
    height: 6px;
    background: var(--color-teal);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-teal);
}

@keyframes ringRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.circuit-center {
    position: relative;
    z-index: 2;
}

.diff-logo {
    width: 160px;
    height: auto;
    filter: drop-shadow(0 0 30px rgba(41, 181, 232, 0.3));
}

/* ==========================================================================
   INDUSTRIES
   ========================================================================== */
.industries {
    padding: 120px 0;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.industry-card {
    text-align: center;
    padding: 48px 24px 40px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.industry-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}

.industry-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, rgba(41, 181, 232, 0.1), rgba(6, 182, 212, 0.06));
    border: 1px solid var(--color-border);
    border-radius: 50%;
}

.industry-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-accent);
}

.industry-card h4 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.industry-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   PROCESS
   ========================================================================== */
.process {
    padding: 120px 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.process-timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.process-line {
    position: absolute;
    top: 32px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg,
        transparent,
        var(--color-border-hover) 20%,
        var(--color-accent) 50%,
        var(--color-border-hover) 80%,
        transparent);
}

.process-step {
    text-align: center;
    position: relative;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--color-bg-primary);
    border: 2px solid var(--color-accent);
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: 24px;
    position: relative;
    z-index: 2;
    box-shadow: 0 0 30px rgba(41, 181, 232, 0.15);
    transition: all var(--transition-base);
}

.process-step:hover .step-number {
    background: linear-gradient(135deg, var(--color-accent), var(--color-teal));
    color: #fff;
    box-shadow: 0 0 40px rgba(41, 181, 232, 0.35);
}

.step-content h4 {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 10px;
}

.step-content p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */
.cta-section {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.cta-bg-effects {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.cta-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
}

.cta-glow--1 {
    width: 500px;
    height: 500px;
    top: -20%;
    left: 20%;
    background: rgba(41, 181, 232, 0.1);
}

.cta-glow--2 {
    width: 400px;
    height: 400px;
    bottom: -20%;
    right: 20%;
    background: rgba(6, 182, 212, 0.08);
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--color-text-primary), var(--color-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-text {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.calendly-embed {
    margin-top: 48px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    padding: 80px 0 32px;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--color-border);
}

.footer-logo {
    height: 250px;
    width: auto;
    margin-bottom: 16px;
}

.footer-tagline {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
    max-width: 280px;
}

.footer-links h5 {
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 32px;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-text-muted);
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(41, 181, 232, 0.06);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: rgba(41, 181, 232, 0.12);
    box-shadow: 0 0 16px rgba(41, 181, 232, 0.15);
}

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

/* ==========================================================================
   ANIMATIONS (Scroll reveal)
   ========================================================================== */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-aos].aos-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .services-grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
    }
    .process-line {
        display: none;
    }
    .diff-layout {
        gap: 48px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        right: -100%;
        width: 280px;
        height: calc(100vh - var(--nav-height));
        flex-direction: column;
        background: rgba(11, 17, 32, 0.98);
        backdrop-filter: blur(20px);
        padding: 32px 24px;
        gap: 4px;
        transition: right var(--transition-base);
        border-left: 1px solid var(--color-border);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        width: 100%;
        padding: 14px 16px;
        font-size: 16px;
    }

    .nav-cta {
        margin-left: 0;
        margin-top: 16px;
        text-align: center;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translateY(5px) translateX(5px);
    }
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translateY(-5px) translateX(5px);
    }

    .hero-headline {
        font-size: clamp(2rem, 8vw, 3rem);
    }

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

    .diff-layout {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .diff-list li {
        justify-content: center;
    }

    .diff-circuit-graphic {
        width: 280px;
        height: 280px;
    }

    .diff-logo {
        width: 120px;
    }

    .process-timeline {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .services-grid,
    .services-grid--3 {
        grid-template-columns: 1fr;
    }

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

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

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

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}