/* ============================================================
   CSS VARIABLES & RESET
============================================================ */
:root {
    --navy:        #1B2B4E;
    --navy-dark:   #111e38;
    --navy-mid:    #243660;
    --knx-green:   #4B9E2A;
    --knx-green-light: #5cb832;
    --knx-blue:    #1E5FAD;
    --knx-blue-light: #2671c8;
    --accent-glow: rgba(75, 158, 42, 0.2);
    --gray-50:     #F5F7FA;
    --gray-100:    #EDF0F5;
    --gray-200:    #D4D9E3;
    --gray-500:    #6B7280;
    --gray-700:    #374151;
    --white:       #FFFFFF;
    --text-main:   #1a2640;
    --text-body:   #4a5568;
    --text-light:  #718096;
    --radius-sm:   6px;
    --radius-md:   12px;
    --radius-lg:   20px;
    --shadow-sm:   0 1px 3px rgba(27,43,78,0.08), 0 1px 2px rgba(27,43,78,0.06);
    --shadow-md:   0 4px 16px rgba(27,43,78,0.10), 0 2px 6px rgba(27,43,78,0.08);
    --shadow-lg:   0 10px 40px rgba(27,43,78,0.14), 0 4px 12px rgba(27,43,78,0.08);
    --shadow-card: 0 2px 12px rgba(27,43,78,0.08);
    --transition:  all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-height:  80px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Open Sans', sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-body);
    background: var(--white);
    overflow-x: hidden;
}

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

a {
    color: var(--knx-blue);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--knx-blue-light);
}

h1, h2, h3, h4 {
    font-family: 'Montserrat', sans-serif;
    color: var(--text-main);
    line-height: 1.2;
    font-weight: 700;
}

ul {
    list-style: none;
}

/* ============================================================
   UTILITY
============================================================ */
.container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}

.section-eyebrow {
    font-family: 'Montserrat', sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--knx-green);
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: clamp(1.6rem, 3vw, 2.25rem);
    color: var(--text-main);
    margin-bottom: 16px;
}

.section-sub {
    font-size: 1.05rem;
    color: var(--text-light);
}

/* ============================================================
   SCROLL ANIMATIONS
============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in {
    animation: fadeInUp 0.9s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   BUTTONS
============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--knx-blue);
    color: var(--white);
    border-color: var(--knx-blue);
}

.btn-primary:hover {
    background: var(--knx-blue-light);
    border-color: var(--knx-blue-light);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(30, 95, 173, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.5);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ============================================================
   NAVBAR
============================================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: var(--white);
    box-shadow: 0 2px 12px rgba(27,43,78,0.10);
    transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(27,43,78,0.15);
}

.nav-container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.nav-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.logo-wide {
    height: 58px;
    width: auto;
    display: block;
}

.logo-square {
    height: 52px;
    width: auto;
    display: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    color: var(--navy);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--knx-blue);
    background: var(--gray-50);
}

.btn-nav {
    display: inline-block;
    padding: 9px 20px;
    background: var(--knx-blue);
    color: var(--white);
    border-radius: var(--radius-sm);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    border: 2px solid var(--knx-blue);
    transition: var(--transition);
    margin-left: 8px;
}

.btn-nav:hover {
    background: var(--knx-blue-light);
    border-color: var(--knx-blue-light);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(30,95,173,0.3);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--navy);
    border-radius: 2px;
    transition: var(--transition);
}

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

/* ============================================================
   HERO
============================================================ */
.hero {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(145deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-mid) 100%);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: calc(var(--nav-height) + 40px) 24px 80px;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to bottom, transparent, rgba(27,43,78,0.15));
    pointer-events: none;
}

.hero-circuit {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.circuit-svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    animation-delay: 0.1s;
}

.hero-eyebrow {
    font-family: 'Montserrat', sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--knx-green);
    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 24px;
    line-height: 1.15;
}

.hero-accent {
    color: var(--knx-green);
}

.hero-sub {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: rgba(255,255,255,0.75);
    margin-bottom: 40px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

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

.hero-scroll-indicator {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.hero-scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    position: relative;
}

.hero-scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255,255,255,0.6);
    border-radius: 2px;
    animation: scrollBob 1.8s ease-in-out infinite;
}

@keyframes scrollBob {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50%       { transform: translateX(-50%) translateY(12px); opacity: 0.3; }
}

/* ============================================================
   PROBLEM SECTION
============================================================ */
.problems {
    padding: 96px 0;
    background: var(--gray-50);
    position: relative;
}

.problem-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.problem-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 32px 28px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--gray-100);
    transition: var(--transition-slow);
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--gray-200);
}

.problem-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(75,158,42,0.1), rgba(30,95,173,0.08));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--navy);
    flex-shrink: 0;
}

.problem-card h3 {
    font-size: 1.05rem;
    margin-bottom: 12px;
    color: var(--text-main);
}

.problem-card p {
    font-size: 0.93rem;
    color: var(--text-body);
    line-height: 1.65;
}

/* ============================================================
   SERVICES
============================================================ */
.services {
    padding: 96px 0;
    background: var(--white);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    max-width: 900px;
    margin: 0 auto;
}

.service-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 32px 28px;
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--knx-green), var(--knx-blue));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--gray-200);
}

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

.service-card-highlight {
    background: linear-gradient(160deg, var(--navy) 0%, var(--navy-mid) 100%);
    border-color: transparent;
}

.service-card-highlight h3,
.service-card-highlight p,
.service-card-highlight .service-list li {
    color: rgba(255,255,255,0.9);
}

.service-card-highlight .service-icon {
    background: rgba(75,158,42,0.2);
    color: var(--knx-green);
}

.service-card-highlight::before {
    background: linear-gradient(90deg, var(--knx-green), rgba(255,255,255,0.3));
    opacity: 1;
}

.service-card-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.service-icon {
    width: 52px;
    height: 52px;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--navy);
    flex-shrink: 0;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, rgba(75,158,42,0.12), rgba(30,95,173,0.08));
    color: var(--knx-green);
}

.service-card h3 {
    font-size: 1.05rem;
    color: var(--text-main);
    padding-top: 4px;
    flex: 1;
    min-width: 0;
}

.badge {
    display: inline-block;
    background: var(--knx-green);
    color: var(--white);
    font-family: 'Montserrat', sans-serif;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 4px;
    margin-top: 2px;
    flex-shrink: 0;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--text-body);
    margin-bottom: 16px;
    line-height: 1.65;
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-top: 1px solid var(--gray-100);
    padding-top: 16px;
}

.service-card-highlight .service-list {
    border-color: rgba(255,255,255,0.12);
}

.service-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-body);
    line-height: 1.5;
}

.service-list li::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    background: var(--knx-green);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 6px;
}


/* ============================================================
   WHY / VORTEILE
============================================================ */
.why {
    padding: 96px 0;
    background: var(--gray-50);
}

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

.why-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    text-align: center;
    transition: var(--transition-slow);
}

.why-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.why-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(75,158,42,0.12), rgba(30,95,173,0.08));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--navy);
    margin: 0 auto 20px;
    transition: var(--transition);
}

.why-card:hover .why-icon {
    background: linear-gradient(135deg, var(--knx-green), var(--knx-blue));
    color: var(--white);
}

.why-card h3 {
    font-size: 0.95rem;
    margin-bottom: 10px;
    color: var(--text-main);
}

.why-card p {
    font-size: 0.87rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ============================================================
   CONTACT
============================================================ */
.contact {
    padding: 96px 0;
    background: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 56px;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.25rem;
    margin-bottom: 28px;
    color: var(--text-main);
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.contact-list li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, rgba(75,158,42,0.1), rgba(30,95,173,0.08));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--navy);
    flex-shrink: 0;
}

.contact-label {
    display: block;
    font-size: 11px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-light);
    margin-bottom: 2px;
}

.contact-list a,
.contact-list span {
    font-size: 0.95rem;
    color: var(--text-main);
    font-weight: 500;
}

.contact-list a:hover {
    color: var(--knx-blue);
}

.contact-note {
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.contact-note svg {
    color: var(--knx-blue);
    flex-shrink: 0;
    margin-top: 1px;
}

.contact-note p {
    font-size: 0.87rem;
    color: var(--text-body);
    line-height: 1.55;
}

/* FORM */
.contact-form {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: 0.3px;
}

.required {
    color: var(--knx-blue);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-family: 'Open Sans', sans-serif;
    font-size: 0.93rem;
    color: var(--text-main);
    background: var(--white);
    transition: var(--transition);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
    cursor: pointer;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--knx-blue);
    box-shadow: 0 0 0 3px rgba(30, 95, 173, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-500);
}

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

.form-hint {
    font-size: 0.78rem;
    color: var(--text-light);
    line-height: 1.5;
    margin-top: -4px;
}

/* ============================================================
   FOOTER
============================================================ */
.footer {
    background: var(--navy-dark);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1.2fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-logo {
    height: 40px;
    width: auto;
    margin-bottom: 16px;
    opacity: 0.9;
}

.footer-brand p {
    font-size: 0.87rem;
    line-height: 1.6;
    max-width: 260px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.5);
    margin-bottom: 16px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.65);
    transition: var(--transition);
}

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

.footer-contact p {
    font-size: 0.88rem;
    margin-bottom: 8px;
}

.footer-contact a {
    color: rgba(255,255,255,0.65);
}

.footer-contact a:hover {
    color: var(--white);
}

.footer-bottom {
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-bottom p {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.4);
}

.footer-legal a {
    color: rgba(255,255,255,0.4);
    font-size: 0.82rem;
}

.footer-legal a:hover {
    color: rgba(255,255,255,0.7);
}

/* ============================================================
   RESPONSIVE – TABLET (≤ 1024px)
============================================================ */
@media (max-width: 1024px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 100%;
    }

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

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

/* ============================================================
   RESPONSIVE – MOBILE (≤ 768px)
============================================================ */
@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    /* Nav */
    .logo-wide { display: none; }
    .logo-square { display: block; }

    .nav-toggle {
        display: flex;
        z-index: 10;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--navy-dark);
        flex-direction: column;
        align-items: stretch;
        padding: 20px 24px 32px;
        gap: 4px;
        transform: translateY(-120%);
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 0 8px 32px rgba(0,0,0,0.3);
        z-index: 999;
    }

    .nav-links.open {
        transform: translateY(0);
    }

    .nav-link {
        padding: 12px 16px;
        border-radius: var(--radius-sm);
        font-size: 1rem;
    }

    .btn-nav {
        margin: 8px 0 0;
        text-align: center;
        padding: 12px 20px;
    }

    /* Hero */
    .hero {
        padding: calc(var(--nav-height) + 24px) 24px 64px;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

    .hero-ctas .btn {
        width: 100%;
        max-width: 320px;
        justify-content: center;
    }

    /* Sections */
    .problems, .services, .why, .contact {
        padding: 64px 0;
    }

    .section-header {
        margin-bottom: 36px;
    }

    .problem-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        max-width: 100%;
    }

    .why-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    /* Contact */
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .contact-form {
        padding: 28px 20px;
    }

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

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

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

/* ============================================================
   RESPONSIVE – SMALL MOBILE (≤ 480px)
============================================================ */
@media (max-width: 480px) {
    .why-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .btn {
        padding: 12px 22px;
        font-size: 0.9rem;
    }

    .contact-form {
        padding: 24px 16px;
    }
}

/* ============================================================
   FOCUS STYLES (ACCESSIBILITY)
============================================================ */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--knx-blue);
    outline-offset: 3px;
}

/* ============================================================
   STAGGERED REVEAL DELAYS
============================================================ */
.problem-card:nth-child(2) { transition-delay: 0.1s; }
.problem-card:nth-child(3) { transition-delay: 0.2s; }

.service-card:nth-child(2) { transition-delay: 0.1s; }
.service-card:nth-child(3) { transition-delay: 0.2s; }
.service-card:nth-child(4) { transition-delay: 0.15s; }
.service-card:nth-child(5) { transition-delay: 0.25s; }

.why-card:nth-child(2) { transition-delay: 0.1s; }
.why-card:nth-child(3) { transition-delay: 0.2s; }
.why-card:nth-child(4) { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
    .reveal, .fade-in {
        opacity: 1;
        transform: none;
        animation: none;
        transition: none;
    }
    html { scroll-behavior: auto; }
    .hero-scroll-indicator span::before { animation: none; }
}