/* Only apply initial hidden state when JavaScript is enabled */
html:not(.js-enabled) .intro-section,
html:not(.js-enabled) .intro-heading,
html:not(.js-enabled) .intro-text,
html:not(.js-enabled) .specialise-section,
html:not(.js-enabled) .specialise-heading,
html:not(.js-enabled) .accordion-item,
html:not(.js-enabled) .obligation-section,
html:not(.js-enabled) .obligation-heading,
html:not(.js-enabled) .obligation-list,
html:not(.js-enabled) .features-list,
html:not(.js-enabled) .feature-item,
html:not(.js-enabled) .features-cta,
html:not(.js-enabled) .full-image-section,
html:not(.js-enabled) .cta-banner {
    opacity: 1 !important;
    transform: none !important;
}

.js-enabled .intro-section,
.js-enabled .intro-heading,
.js-enabled .intro-text,
.js-enabled .specialise-section,
.js-enabled .specialise-heading,
.js-enabled .accordion-item,
.js-enabled .obligation-section,
.js-enabled .obligation-heading,
.js-enabled .obligation-list,
.js-enabled .features-list,
.js-enabled .feature-item,
.js-enabled .features-cta,
.js-enabled .full-image-section,
.js-enabled .cta-banner {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

:root {
    --color-black: #000000;
    --color-white: #ffffff;
    --color-accent: #01e194;
    --color-light-gray-bg: #f5f5f5;
    --color-medium-gray: #666666;
    --color-light-gray-text: #999999;
    --color-border: #e5e5e5;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading Screen */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-black);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-logo {
    width: 120px;
    height: 120px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* Hero Section */
.hero-section {
    margin-top: 0;
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('../images/sunny-day.jpg') center/cover;
    background-attachment: fixed;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
    animation: fadeIn 1s ease;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1400px;
    padding: 0 48px;
    animation: slideUp 1s ease;
}

.hero-text {
    max-width: 800px;
}

.hero-label {
    font-size: 16px;
    font-weight: 400;
    letter-spacing: 1px;
    color: var(--color-white);
    text-transform: uppercase;
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.3s forwards;
}

.hero-heading {
    font-size: 64px;
    line-height: 1.1;
    color: var(--color-white);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.5s forwards;
}

.hero-heading .accent {
    color: var(--color-accent);
    display: inline-block;
}

.hero-decoration {
    position: relative;
    width: 400px;
    max-width: 40%;
    z-index: 2;
    opacity: 0;
    animation: fadeInRight 1s ease 0.7s forwards;
}

/* ============================================
   SCROLL ANIMATION SYSTEM
   ============================================ */

/* Base states for all animated elements */
.intro-section,
.intro-heading,
.intro-text,
.specialise-section,
.specialise-heading,
.accordion-item,
.obligation-section,
.obligation-heading,
.obligation-list,
.features-list,
.feature-item,
.features-cta,
.full-image-section,
.cta-banner {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

/* Animated state */
.animate-in {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* ============================================
   INTRO SECTION ANIMATIONS
   ============================================ */

.intro-section {
    padding: 120px 48px;
    text-align: center;
}

.intro-section.animate-in {
    transition-delay: 0.1s;
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
}

.intro-heading {
    font-size: 48px;
}

.intro-heading.animate-in {
    transition-delay: 0.2s;
}

.intro-heading .accent {
    color: var(--color-accent);
    position: relative;
}

.intro-heading .accent::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--color-accent);
}

.intro-text {
    margin-top: 32px;
    font-size: 18px;
    line-height: 1.7;
}

.intro-text.animate-in {
    transition-delay: 0.4s;
}

/* ============================================
   SPECIALISE SECTION ANIMATIONS
   ============================================ */

.specialise-section {
    background: var(--color-light-gray-bg);
    padding: 120px 48px;
}

.specialise-section.animate-in {
    transition-delay: 0.1s;
}

.specialise-container {
    max-width: 1400px;
    margin: 0 auto;
}

.specialise-heading {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 64px;
    text-align: center;
}

.specialise-heading.animate-in {
    transition-delay: 0.2s;
}

/* Accordion */
.accordion-item {
    background: var(--color-white);
    margin-bottom: 16px;
    border-radius: 0;
    overflow: visible;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease, all 0.3s ease;
}

.accordion-item:nth-child(1).animate-in { transition-delay: 0.1s; }
.accordion-item:nth-child(2).animate-in { transition-delay: 0.2s; }
.accordion-item:nth-child(3).animate-in { transition-delay: 0.3s; }
.accordion-item:nth-child(4).animate-in { transition-delay: 0.4s; }
.accordion-item:nth-child(5).animate-in { transition-delay: 0.5s; }
.accordion-item:nth-child(6).animate-in { transition-delay: 0.6s; }

.accordion-trigger {
    width: 100%;
    padding: 32px 48px;
    background: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.accordion-trigger:hover {
    transform: translateX(10px) scale(1.01);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.accordion-trigger-left {
    display: flex;
    align-items: center;
    gap: 20px;
    position: relative;
    padding-left: 30px;
}

/* Arrow bullet before accordion title */
.accordion-trigger-left::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 10px solid var(--color-accent);
    transition: transform 0.3s ease;
}

.accordion-trigger:hover .accordion-trigger-left::before {
    transform: translateY(-50%) translateX(5px);
}

.accordion-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-black);
    text-align: left;
    transition: color 0.3s ease;
}

.accordion-trigger:hover .accordion-title {
    color: var(--color-accent);
}

.accordion-icon {
    position: relative;
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.accordion-trigger:hover .accordion-icon {
    transform: rotate(90deg);
}

.accordion-icon::before,
.accordion-icon::after {
    content: '';
    position: absolute;
    background: var(--color-black);
    transition: all 0.3s ease;
}

.accordion-icon::before {
    top: 50%;
    left: 0;
    width: 100%;
    height: 3px;
    transform: translateY(-50%);
}

.accordion-icon::after {
    top: 0;
    left: 50%;
    width: 3px;
    height: 100%;
    transform: translateX(-50%);
}

.accordion-item.active .accordion-icon {
    transform: rotate(45deg);
}

.accordion-item.active .accordion-icon::after {
    opacity: 0;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--color-white);
}

.accordion-content-inner {
    padding: 0 48px 48px 78px;
    font-size: 16px;
    color: var(--color-medium-gray);
    line-height: 1.6;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.4s ease 0.1s, transform 0.4s ease 0.1s;
}

.accordion-item.active .accordion-content-inner {
    opacity: 1;
    transform: translateY(0);
}

/* Arrow bullet points for lists inside accordion */
.accordion-content-inner ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.accordion-content-inner ul li {
    position: relative;
    padding-left: 35px;
    margin-bottom: 16px;
    opacity: 0;
    transform: translateX(-10px);
    animation: slideInLeft 0.5s ease forwards;
}

.accordion-item.active .accordion-content-inner ul li:nth-child(1) { animation-delay: 0.1s; }
.accordion-item.active .accordion-content-inner ul li:nth-child(2) { animation-delay: 0.15s; }
.accordion-item.active .accordion-content-inner ul li:nth-child(3) { animation-delay: 0.2s; }
.accordion-item.active .accordion-content-inner ul li:nth-child(4) { animation-delay: 0.25s; }
.accordion-item.active .accordion-content-inner ul li:nth-child(5) { animation-delay: 0.3s; }
.accordion-item.active .accordion-content-inner ul li:nth-child(6) { animation-delay: 0.35s; }
.accordion-item.active .accordion-content-inner ul li:nth-child(7) { animation-delay: 0.4s; }
.accordion-item.active .accordion-content-inner ul li:nth-child(8) { animation-delay: 0.45s; }
.accordion-item.active .accordion-content-inner ul li:nth-child(9) { animation-delay: 0.5s; }
.accordion-item.active .accordion-content-inner ul li:nth-child(10) { animation-delay: 0.55s; }

/* Right-pointing arrow bullet */
.accordion-content-inner ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 10px solid var(--color-accent);
    transition: transform 0.3s ease;
}

.accordion-content-inner ul li:hover::before {
    transform: translateX(5px);
}

/* ============================================
   OBLIGATION SECTION ANIMATIONS
   ============================================ */

.obligation-section {
    background: var(--color-black);
    color: var(--color-white);
    padding: 120px 48px;
}

.obligation-section.animate-in {
    transition-delay: 0.1s;
}

.obligation-grid {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    max-width: 1400px;
    margin: 0 auto;
}

.obligation-heading {
    font-size: 90px;
    line-height: 1.2;
    margin-bottom: 24px;
    transform: translateX(-30px);
}

.obligation-heading.animate-in {
    transform: translateX(0) !important;
    transition-delay: 0.2s;
}

.obligation-heading .accent {
    color: var(--color-accent);
    display: inline-block;
}

.obligation-list {
    list-style: none;
    padding: 0;
    margin: 0;
    transform: translateX(-30px);
}

.obligation-list.animate-in {
    transform: translateX(0) !important;
    transition-delay: 0.3s;
}

.obligation-list li {
    font-size: 28px;
    line-height: 1.5;
    padding-left: 0;
    position: relative;
    margin-bottom: 12px;
    font-weight: 300;
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.obligation-list li::before {
    content: "•";
    color: var(--color-accent);
    font-weight: 400;
    flex-shrink: 0;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.features-list.animate-in {
    transition-delay: 0.2s;
}

.feature-item {
    display: flex;
    gap: 24px;
    transform: translateX(40px);
}

.feature-item:nth-child(1).animate-in { 
    transition-delay: 0.3s;
    transform: translateX(0) !important;
}

.feature-item:nth-child(2).animate-in { 
    transition-delay: 0.4s;
    transform: translateX(0) !important;
}

.feature-item:nth-child(3).animate-in { 
    transition-delay: 0.5s;
    transform: translateX(0) !important;
}

.feature-icon {
    width: 70px;
    height: 70px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.feature-item:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 8px;
    transition: color 0.3s ease;
}

.feature-item:hover .feature-title {
    color: var(--color-accent);
}

.feature-description {
    font-size: 16px;
    color: var(--color-white);
    line-height: 1.6;
}

.features-cta {
    margin-top: 64px;
    font-size: 16px;
    color: var(--color-white);
}

.features-cta.animate-in {
    transition-delay: 0.7s;
}

/* ============================================
   FULL IMAGE SECTION ANIMATION
   ============================================ */

.full-image-section {
    height: 500px;
    background: url('../images/construction-site.jpg') center/cover;
    position: relative;
    overflow: hidden;
    transform: scale(0.95);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.full-image-section.animate-in {
    transform: scale(1) !important;
}

.full-image-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.full-image-section:hover::after {
    opacity: 1;
}

/* ============================================
   CTA BANNER ANIMATIONS
   ============================================ */

.cta-banner {
    background: var(--color-accent);
    padding: 40px 48px;
    cursor: pointer;
    text-decoration: none;
    display: block;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    transform: translateY(30px);
}

.cta-banner.animate-in {
    transition-delay: 0.1s;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--color-black);
    transition: left 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
}

.cta-banner:hover::before {
    left: 0;
}

.cta-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.cta-text {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-black);
    transition: all 0.4s ease;
}

.cta-banner:hover .cta-text {
    color: var(--color-accent);
    transform: translateX(10px);
}

.cta-arrow {
    width: 40px;
    height: 40px;
    stroke: var(--color-black);
    stroke-width: 2.5;
    transition: all 0.4s ease;
}

.cta-banner:hover .cta-arrow {
    stroke: var(--color-accent);
    transform: translateX(10px);
}

/* Keyframe Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes expandWidth {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .obligation-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 32px;
    }

    h2 {
        font-size: 28px;
    }

    .container {
        padding: 0 24px;
    }

    .header-content {
        height: 80px;
        padding: 0 24px;
    }

    .logo-link {
        display: none;
    }

    .mobile-logo {
        display: block;
        width: 56px;
        height: 56px;
    }

    nav .nav-list {
        display: none;
    }

    .mega-dropdown {
        display: none;
    }

    nav .nav-divider {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-section {
        margin-top: 0;
        min-height: 100vh;
        background-attachment: scroll;
    }

    .hero-content {
        flex-direction: column;
        text-align: left;
        padding: 40px 24px;
    }

    .hero-text {
        width: 100%;
    }

    .hero-heading {
        font-size: 40px;
    }

    .hero-decoration {
        margin-top: 40px;
        max-width: 280px;
        width: 60%;
    }

    @media (max-width: 480px) {
        .hero-decoration {
            display: none;
        }
    }

    .intro-section {
        padding: 60px 24px;
    }

    .intro-heading {
        font-size: 32px;
    }

    .intro-text {
        font-size: 16px;
    }

    .specialise-section {
        padding: 60px 24px;
    }

    .specialise-heading {
        font-size: 28px;
    }

    .accordion-trigger {
        padding: 24px;
    }

    .accordion-trigger-left {
        gap: 16px;
    }

    .accordion-content-inner {
        padding: 0 24px 24px 60px;
    }

    .obligation-section {
        padding: 60px 24px;
    }

    .obligation-heading {
        font-size: 32px;
    }

    .full-image-section {
        height: 300px;
    }

    .cta-banner {
        padding: 32px 24px;
    }

    .cta-text {
        font-size: 24px;
    }
}

/* Fade-in utility class */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
}