:root {
    /* Neutrals */
    --white: #f5f4f0;
    --paper: #eeece7;
    /* Default background */
    --g10: #d8d6d0;
    /* Borders, rules */
    --g30: #a8a49c;
    /* Placeholder, meta text */
    --g60: #5c5954;
    /* Secondary body text */
    --g80: #2e2c29;
    /* Deep UI elements */
    --black: #1a1917;
    /* Primary text, fills */

    /* Accent — Brick */
    --brick: #954526;

    /* Accent — Highlight (use sparingly, dark surfaces only) */
    --highlight: #eea175;

    /* Brand — Key identity colors */
    --brand: #4a6765;
    --brand-lt: #92a4a3;
    --brand-dk: #0f3538;
    --brand-deep: #0e2022;

    /* Gradients (Optional/Fallback) */
    --gradient-hero: linear-gradient(135deg, rgba(14, 32, 34, 0.8) 0%, rgba(14, 32, 34, 0.4) 100%);

    /* Typography */
    --ff-brand: 'Lexend', sans-serif;
    --ff-body: 'Figtree', sans-serif;
    --ff-mono: 'DM Mono', monospace;

    /* Spacing */
    --section-padding: 64px 0;
    /* Updated from specs: 4rem (64px) desktop */

    /* Transitions */
    --trans-fast: 0.3s ease;
    --trans-med: 0.5s ease;

    /* Border Radius */
    --r-btn: 6px;
    --r-card: 10px;
    --r-pill: 999px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--ff-body);
    font-size: 1rem;
    /* 16px */
    font-weight: 300;
    color: var(--black);
    background-color: var(--paper);
    line-height: 1.85;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

.section {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding: var(--section-padding);
}

.section-title {
    font-family: var(--ff-brand);
    font-size: 2.6rem;
    /* Display size */
    font-weight: 400;
    letter-spacing: -0.035em;
    line-height: 0.95;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--black);
}

/* =========================================
   Header & Navigation
========================================= */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color var(--trans-med), backdrop-filter var(--trans-med), color var(--trans-med), border-bottom var(--trans-med);
    padding: 1rem 0;
    /* Thinner for new logo */
    color: var(--white);
    /* Default to light on hero */
}

/* Header theme states */
.site-header.theme-light {
    color: var(--white);
    background-color: transparent;
}

.site-header.theme-dark {
    color: var(--black);
    background-color: rgba(238, 236, 231, 0.85);
    /* --paper with opacity */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--g10);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    text-decoration: none;
    color: inherit;
    transition: color var(--trans-fast);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-family: var(--ff-brand);
    text-decoration: none;
    color: inherit;
    font-weight: 400;
    font-size: 1rem;
    position: relative;
    transition: font-weight 0.2s ease, color var(--trans-fast);
}

.nav-link:hover {
    font-weight: 600;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--brand);
    /* Active color */
    transition: width var(--trans-fast);
}

.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    font-weight: 500;
    color: var(--brand);
}

.site-header.theme-light .nav-link.active {
    color: var(--white);
}

.site-header.theme-light .nav-link::after {
    background-color: var(--white);
}

/* =========================================
   Section 1: Hero (Dark Mode)
========================================= */
.hero-section {
    padding: 0;
    background-color: var(--black);
    color: var(--white);
    overflow: hidden;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    z-index: 2;
}

/* Dark Mode Background Pattern */
.hero-section.dot-bg-dark {
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.09) 1px, transparent 1px);
    background-size: 24px 24px;
}

#dot-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: auto;
}

.hero-content {
    position: relative;
    z-index: 4;
    text-align: center;
    max-width: 800px;
    padding: 0 2rem;
    pointer-events: none;
    /* Let mouse interact with canvas */
}

.hero-title {
    font-family: var(--ff-brand);
    font-size: clamp(3rem, 7vw, 5rem);
    font-weight: 400;
    letter-spacing: -0.035em;
    line-height: 0.95;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.hero-subtitle {
    font-family: var(--ff-body);
    font-size: 1.1rem;
    font-weight: 300;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.scroll-arrow {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    z-index: 10;
    opacity: 0.8;
    transition: opacity var(--trans-fast), color var(--trans-fast);
    animation: bounce 2s infinite;
}

.scroll-arrow:hover {
    opacity: 1;
    color: var(--brand-lt);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}


/* =========================================
   Section 2: What We Do
========================================= */
.what-section {
    background-color: var(--paper);
}

.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: -1.5rem auto 4rem;
    color: var(--g60);
    font-size: 1.1rem;
}

/* Progress Tracker */
.progress-tracker-wrapper {
    width: 100%;
    margin: 0 auto 3rem;
    display: none;
}
@media (min-width: 900px) {
    .progress-tracker-wrapper { display: block; }
}

.progress-tracker {
    position: relative;
    width: 100%;
    height: 16px;
}

.progress-line-bg {
    position: absolute;
    top: 50%;
    height: 2px;
    background: var(--g10);
    transform: translateY(-50%);
    z-index: 1;
}

.progress-line-fill {
    position: absolute;
    top: 50%;
    height: 2px;
    background: var(--brick);
    transform: translateY(-50%);
    z-index: 2;
    width: 0px;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-node {
    position: absolute;
    top: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--paper);
    border: 2px solid var(--g10);
    transform: translateX(-50%);
    z-index: 3;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.progress-node.active {
    border-color: var(--brick);
    background: var(--brick);
    box-shadow: 0 0 0 4px rgba(149, 69, 38, 0.15);
}

.what-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.what-item {
    background: var(--paper);
    padding: 2rem 1.5rem;
    border: 1.5px solid var(--g10);
    border-radius: var(--r-card);
    transition: transform var(--trans-fast), box-shadow var(--trans-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.what-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.what-icon {
    width: 100%;
    max-width: 150px;
    height: 150px;
    object-fit: contain;
    margin-bottom: 1.5rem;
    transition: transform var(--trans-med);
}

.what-item:hover .what-icon {
    transform: scale(1.05);
}

.what-item h3 {
    font-family: var(--ff-brand);
    font-size: 1.4rem;
    /* 28px H1 Heading */
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 1rem;
}

.what-item p {
    color: var(--g60);
    font-size: 1rem;
}

/* =========================================
   Section 3: How It Works
========================================= */
.how-section {
    background-color: var(--white);
    justify-content: flex-start;
    padding-top: 20vh;
}

.how-container {
    display: flex;
    align-items: flex-start;
    min-height: 500px;
    gap: 4rem;
}

.how-left {
    flex: 1;
}

.how-left .section-title {
    text-align: left;
}

.how-right {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.accordion-item {
    border-bottom: 1px solid var(--g10);
    padding-bottom: 1rem;
}

.accordion-header {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    font-family: var(--ff-brand);
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--g30);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: color var(--trans-fast);
    padding: 1rem 0;
}

.step-num {
    font-family: var(--ff-mono);
    font-size: 0.8rem;
    background: var(--paper);
    color: var(--g60);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--r-pill);
    transition: all var(--trans-fast);
}

.accordion-item.active .accordion-header {
    color: var(--black);
}

.accordion-item.active .step-num {
    background: var(--brand);
    color: var(--white);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
    opacity: 0;
}

.accordion-item.active .accordion-content {
    max-height: 200px;
    opacity: 1;
}

.accordion-content p {
    padding-left: calc(32px + 1.5rem);
    color: var(--g60);
    padding-bottom: 1rem;
}

.graphic-container {
    width: 100%;
    aspect-ratio: 1;
    max-width: 500px;
    background: transparent;
    border: none;
    border-radius: var(--r-card);
    position: relative;
    overflow: hidden;
}

.graphic-step {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity var(--trans-med), transform var(--trans-med);
    pointer-events: none;
}

.graphic-step.active {
    opacity: 1;
    transform: scale(1);
}

/* Animations for How it Works SVGs */

/* Step 1: Upload (Floor plan drawing in) */
.upload-path {
    stroke-dasharray: 2000;
    stroke-dashoffset: 2000;
    animation: drawUpload 4s ease-out forwards infinite;
}

@keyframes drawUpload {
    0% {
        stroke-dashoffset: 2000;
        opacity: 0;
    }

    5% {
        opacity: 1;
    }

    40%,
    80% {
        stroke-dashoffset: 0;
        opacity: 1;
    }

    90%,
    100% {
        stroke-dashoffset: 0;
        opacity: 0;
    }
}

/* Step 2: Layout (Desks sliding in) */
.layout-desk-1 {
    animation: slideSvgDesk1 4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    transform-origin: center;
}

.layout-desk-2 {
    animation: slideSvgDesk2 4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    transform-origin: center;
}

.layout-desk-3 {
    animation: slideSvgDesk3 4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    transform-origin: center;
}

.layout-desk-4 {
    animation: slideSvgDesk4 4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    transform-origin: center;
}

@keyframes slideSvgDesk1 {

    0%,
    15% {
        transform: translate(-100px, -100px) rotate(-10deg);
        opacity: 0;
    }

    30%,
    80% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 1;
    }

    90%,
    100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0;
    }
}

@keyframes slideSvgDesk2 {

    0%,
    20% {
        transform: translate(-100px, 100px) rotate(10deg);
        opacity: 0;
    }

    35%,
    80% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 1;
    }

    90%,
    100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0;
    }
}

@keyframes slideSvgDesk3 {

    0%,
    25% {
        transform: translate(100px, -100px) rotate(10deg);
        opacity: 0;
    }

    40%,
    80% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 1;
    }

    90%,
    100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0;
    }
}

@keyframes slideSvgDesk4 {

    0%,
    30% {
        transform: translate(100px, 100px) rotate(-10deg);
        opacity: 0;
    }

    45%,
    80% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 1;
    }

    90%,
    100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0;
    }
}

/* Step 3: Order (Cursor clicking button) */
.order-cursor {
    animation: svgCursorMove 4s ease-in-out infinite;
    transform-origin: center;
}

.order-btn-svg {
    animation: svgBtnClick 4s ease-in-out infinite;
    transform-origin: center;
}

@keyframes svgCursorMove {
    0% {
        transform: translate(100px, 50px);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    40%,
    60% {
        transform: translate(-20px, 15px);
        opacity: 1;
    }

    50% {
        transform: translate(-20px, 15px) scale(0.9);
        opacity: 1;
    }

    /* click */
    80% {
        opacity: 1;
    }

    100% {
        transform: translate(100px, 50px);
        opacity: 0;
    }
}

@keyframes svgBtnClick {

    0%,
    45%,
    55%,
    100% {
        transform: scale(1);
        stroke: #4A6765;
        fill: transparent;
    }

    50% {
        transform: scale(0.95);
        stroke: var(--brand-dk);
        fill: var(--brand-dk);
    }
}

/* =========================================
   Section 4: Contact
========================================= */
.contact-section {
    background-color: var(--brand-lt);
}

.contact-wrapper {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem 2.5rem;
    border: 1.5px solid var(--brand-dk);
    border-radius: var(--r-card);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-family: var(--ff-mono);
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--brand-dk);
}

/* Underline variant inputs */
.form-group input,
.form-group textarea {
    width: 100%;
    border: none;
    border-bottom: 1.5px solid var(--brand-dk);
    padding: 0.6rem 0;
    background: transparent;
    font-family: var(--ff-body);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--black);
    transition: border-color var(--trans-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-bottom-color: var(--brick);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--brand);
    opacity: 1;
}

.submit-btn {
    width: 100%;
    padding: 0.75rem 1.4rem;
    border: 1.5px solid var(--black);
    border-radius: var(--r-btn);
    background: var(--brand-deep);
    color: var(--brand-lt);
    font-family: var(--ff-brand);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: background var(--trans-fast), color var(--trans-fast);
    margin-top: 1rem;
}

.submit-btn:hover {
    background: transparent;
    color: var(--brand-deep);
}

/* =========================================
   Section 5: Footer
========================================= */
.site-footer {
    background-color: var(--brand-deep);
    color: var(--white);
    padding: 4rem 2rem 2rem;
}

.footer-main {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-left {
    flex: 1;
}

.footer-right {
    flex: 1;
    display: flex;
    align-items: center;
}

.footer-logo {
    text-decoration: none;
    color: var(--brand-lt);
    display: inline-block;
}

.footer-right p {
    color: var(--brand-lt);
    font-size: 1rem;
    line-height: 1.85;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid var(--brand-dk);
    padding-top: 2rem;
    text-align: center;
    color: var(--brand-lt);
    font-family: var(--ff-mono);
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* Responsive Design */
@media (max-width: 900px) {
    .how-container {
        flex-direction: column;
    }

    .footer-main {
        flex-direction: column;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .section-title {
        font-size: 2rem;
    }
}