:root {
    --bg: #f5f5f5;
    --fg: #121212;
    --gray-dark: #e0e0e0;
    --gray-mid: #cccccc;
    --gray-light: #4a4a4a;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border-radius: 0 !important;
    /* Brutalist sharp corners */
}

.dark-theme {
    --bg: #000000;
    --fg: #ffffff;
    --gray-dark: #121212;
    --gray-mid: #2a2a2a;
    --gray-light: #b5b5b5;
    background-color: var(--bg);
    color: var(--fg);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 120px;
}

body {
    background-color: var(--bg);
    color: var(--fg);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    color: var(--fg);
    line-height: 1.2;
}

.luxury-emphasis {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-weight: 400;
    position: relative;
    display: inline-block;
    padding-right: 0.2rem;
    color: var(--gray-light);
    /* Adds a subtle contrast against pure white */
}

.luxury-emphasis::after {
    content: '';
    position: absolute;
    bottom: 0.15em;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--gray-light);
    opacity: 0.6;
}

.title-lg {
    font-size: clamp(3rem, 7vw, 6rem);
    line-height: 0.9;
    margin-bottom: 1rem;
}

.title-md {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 3rem;
    border-bottom: 1px solid var(--gray-mid);
    padding-bottom: 1rem;
}

.title-sm {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.subtitle {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: var(--gray-light);
    font-weight: 300;
    max-width: 700px;
}

.text-muted {
    color: var(--gray-light);
}

.text-fg {
    color: var(--fg);
}

.mono {
    font-family: monospace;
    letter-spacing: 0.05em;
}

/* Layout Utilities */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2vw;
}

.section {
    padding: 8rem 0;
    position: relative;
    border-bottom: 1px solid var(--gray-mid);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 4rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 100;
    background: transparent;
    transition: var(--transition);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--fg);
    text-decoration: none;
    letter-spacing: 0.1em;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--gray-light);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--fg);
}

.nav-links a.active {
    border-bottom: 2px solid var(--fg);
    padding-bottom: 4px;
}

/* Call To Action Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.85rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--fg);
}

.btn-primary {
    background: var(--fg);
    color: var(--bg);
}

.btn-primary:hover {
    background: transparent;
    color: var(--fg);
}

.btn-ghost {
    background: transparent;
    color: var(--fg);
}

.btn-ghost:hover {
    background: var(--fg);
    color: var(--bg);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
}

.hero .subtitle {
    margin: 2rem 0 3rem;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
}

/* Stack Logos */
.stack-logo {
    transition: var(--transition);
    cursor: pointer;
}

.stack-logo:hover {
    filter: brightness(0);
    transform: scale(1.1);
}

/* Central Brain SVG Animation */
.brain-svg {
    max-width: 400px;
    opacity: 0.8;
}

.orbit-slow {
    transform-origin: center;
    animation: rotate 30s linear infinite;
}

.orbit-fast {
    transform-origin: center;
    animation: rotateReverse 15s linear infinite;
}

.core-pulse {
    transform-origin: center;
    animation: pulseCore 4s ease-in-out infinite;
}

.data-stream {
    stroke: var(--fg);
    stroke-width: 2;
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    animation: streamData 3s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.data-stream.delay-1 {
    animation-delay: 0.75s;
}

.data-stream.delay-2 {
    animation-delay: 1.5s;
}

.data-stream.delay-3 {
    animation-delay: 2.25s;
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@keyframes rotateReverse {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(-360deg);
    }
}

@keyframes pulseCore {
    0% {
        transform: scale(0.95);
        opacity: 0.8;
    }

    50% {
        transform: scale(1.05);
        opacity: 1;
    }

    100% {
        transform: scale(0.95);
        opacity: 0.8;
    }
}

@keyframes streamData {
    0% {
        stroke-dashoffset: 200;
        opacity: 0;
    }

    20% {
        opacity: 1;
    }

    80% {
        opacity: 1;
    }

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

/* Timeline System */
.timeline {
    position: relative;
    padding-left: 2rem;
    border-left: 1px solid var(--gray-mid);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-node {
    position: absolute;
    left: -2.35rem;
    /* Center the node directly on the 1px border */
    top: 5px;
    width: 10px;
    height: 10px;
    background-color: var(--fg);
    border: 1px solid var(--fg);
}

.timeline-number {
    display: inline-block;
    font-family: monospace;
    color: var(--gray-light);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-size: 1.25rem;
    color: var(--fg);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    font-weight: 500;
}

.timeline-text {
    color: var(--gray-light);
    font-size: 1rem;
    line-height: 1.6;
}

/* Brutalist Cards */
.brutal-card {
    background: transparent;
    border: 1px solid var(--gray-mid);
    padding: 3rem 2.5rem;
    transition: var(--transition);
}

.brutal-card:hover {
    border-color: var(--fg);
}

.card-icon {
    margin-bottom: 2rem;
    color: var(--fg);
}

/* Lists */
.feature-list {
    list-style: none;
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    border-top: 1px solid var(--gray-mid);
    padding-top: 2rem;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    color: var(--gray-light);
    font-size: 0.95rem;
}

.feature-list li i {
    color: var(--fg);
    min-width: 24px;
}

/* Cases */
.case-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.header-logo {
    filter: brightness(0);
    opacity: 1;
    mix-blend-mode: multiply;
    transition: var(--transition);
    display: block;
}

.case-metric {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-mid);
}

.case-metric h4 {
    color: var(--fg);
    font-size: 4rem;
    line-height: 1;
    margin-bottom: 0.5rem;
    font-family: var(--font-heading);
}

/* FAQ Accordion */
.faq-item {
    border-bottom: 1px solid var(--gray-mid);
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    padding: 2rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 1.25rem;
    font-family: var(--font-body);
    font-weight: 400;
}

.faq-answer {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s ease-in-out;
    color: var(--gray-light);
}

.faq-item.active .faq-answer {
    padding-bottom: 2rem;
    max-height: 400px;
}

.faq-item.active {
    border-color: var(--fg);
}

.faq-icon {
    transition: transform 0.4s ease;
}

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

/* Footer */
footer {
    padding: 6rem 0 3rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.stacked-cases {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 6rem;
}

.footer-col h4 {
    margin-bottom: 2rem;
    font-size: 0.85rem;
    color: var(--gray-light);
    letter-spacing: 0.1em;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a {
    color: var(--fg);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--gray-light);
    text-decoration: underline;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray-light);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-top: 1px solid var(--gray-mid);
    padding-top: 2rem;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

.delay-3 {
    transition-delay: 0.3s;
}

/* Grid Background */
.architectural-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    display: flex;
    justify-content: space-between;
    padding: 0 10vw;
}

.architectural-grid::before,
.architectural-grid::after,
.architectural-grid span {
    content: '';
    width: 1px;
    height: 100%;
    background: var(--gray-dark);
}

/* ── Change #8: ROI title variant toggle ── */
.roi-title-mobile { display: none; }
.roi-title-desktop { display: inline; }

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.5rem;
    z-index: 200;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--fg);
    transition: var(--transition);
}

.hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Drawer */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #000;
    z-index: 150;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav.open {
    opacity: 1;
    visibility: visible;
}

.mobile-nav-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: #ffffff;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 200;
    transition: var(--transition);
}

.mobile-nav-close:hover {
    transform: scale(1.1);
    opacity: 0.8;
}

.mobile-nav a {
    color: #ffffff;
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: var(--transition);
}

.mobile-nav a:hover,
.mobile-nav a.active {
    color: var(--gray-light);
}

.mobile-nav a.active {
    border-bottom: 2px solid var(--gray-light);
    padding-bottom: 2px;
}

/* Helper */
.d-none-mobile {
    display: flex;
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* --- Tablet (max 992px) --- */
@media (max-width: 992px) {
    .container {
        padding: 0 4vw;
    }

    .section {
        padding: 5rem 0;
    }

    .grid-2 {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .stacked-cases {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }

    .brutal-card {
        padding: 2.5rem 2rem;
    }
}

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

    .d-none-mobile {
        display: none !important;
    }

    .hamburger {
        display: flex;
    }

    .mobile-nav {
        display: flex;
    }

    .navbar {
        padding: 1rem 0;
    }

    /* Sections */
    .section {
        padding: 4rem 0;
    }

    .container {
        padding: 0 5vw;
    }

    /* Hero */
    .hero {
        padding-top: 80px;
        min-height: 100svh;
        align-items: flex-end;
        padding-bottom: 4rem;
    }

    .hero .title-lg br {
        display: none;
    }

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

    .hero .subtitle {
        margin: 1.5rem 0 2rem;
    }

    /* Typography overrides */
    .title-md {
        font-size: clamp(1.6rem, 6vw, 2.5rem);
        margin-bottom: 2rem;
    }

    .title-sm {
        font-size: 1.1rem;
    }

    /* ROI Calculator */
    #roi-calculator .grid-2 {
        gap: 2rem;
    }

    #costResult {
        font-size: 2.5rem !important;
    }

    #liveCostResult {
        font-size: 1.75rem !important;
    }

    /* Navbar — smaller logo + brand text on mobile (#3) */
    .logo img { height: 40px !important; }
    .logo { font-size: 1.1rem; gap: 0.5rem; }

    /* Footer email — prevent overflow (#4) */
    .footer-links a[href^="mailto"] {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 220px;
        display: inline-block;
    }

    /* ROI title: show short version, hide long one (#8) */
    .roi-title-mobile { display: inline; }
    .roi-title-desktop { display: none; }

    /* Soluções - stats row */
    .solucoes-stats {
        gap: 1.5rem;
    }

    /* Cases logos strip */
    .cases-logos {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.25rem;
    }

    /* Stack logos grid from 5-col to 4-col */
    .stack-grid {
        grid-template-columns: repeat(4, 1fr) !important;
        gap: 1.5rem;
    }

    /* Sobre - brain SVG container */
    #sobre .grid-2 > div:last-child {
        min-height: 280px !important;
    }

    /* Processo timeline */
    .timeline {
        padding-left: 1.5rem;
    }

    .timeline-node {
        left: -1.85rem;
    }

    /* Cards */
    .brutal-card {
        padding: 2rem 1.5rem;
    }

    .case-metric h4 {
        font-size: 3rem;
    }

    /* Compliance badges */
    #comercial [style*="display: flex; gap: 1rem; flex-wrap: wrap;"] {
        gap: 0.5rem;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
        font-size: 0.75rem;
    }

    footer {
        padding: 4rem 0 2.5rem;
    }

    /* Background grid */
    .architectural-grid {
        display: none;
    }

    /* Buttons */
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.8rem;
    }
}

/* --- Small Mobile (max 480px) --- */
@media (max-width: 480px) {
    .container {
        padding: 0 1.25rem;
    }

    .section {
        padding: 3rem 0;
    }

    .hero {
        padding-bottom: 3rem;
    }

    /* Stack logos grid to 3-col on smallest screens */
    .stack-grid {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 1rem;
    }

    /* Cases logos strip */
    .cases-logos {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Logos resize */
    .cases-logos .header-logo {
        height: 48px !important;
        width: auto !important;
    }

    /* Sobre section stats */
    .sobre-stats {
        gap: 2rem;
        flex-direction: column;
    }

    /* Soluções process steps */
    .solucoes-steps {
        grid-template-columns: 1fr !important;
    }

    /* Soluções - stats row */
    .solucoes-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .brutal-card {
        padding: 1.5rem 1.25rem;
    }

    .case-metric h4 {
        font-size: 2.5rem;
    }

    .timeline-title {
        font-size: 1rem;
    }

    .footer-grid {
        gap: 2rem;
    }

    /* ROI card numbers */
    #costResult {
        font-size: 2rem !important;
    }

    #liveCostResult {
        font-size: 1.5rem !important;
    }

    #timeResult {
        font-size: 1.5rem !important;
    }
}

/* Modal Overlay & Content */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 1rem;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--bg);
    transform: translateY(30px) scale(0.95);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-content {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: transparent;
    border: none;
    color: var(--gray-light);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--fg);
    transform: rotate(90deg);
}

/* Form Controls */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    background: transparent;
    border: 1px solid var(--gray-mid);
    color: var(--fg);
    padding: 1rem 1.25rem;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
    outline: none;
}

.form-control::placeholder {
    color: var(--gray-light);
    opacity: 0.5;
}

.form-control:focus {
    border-color: var(--fg);
    background: rgba(0, 0, 0, 0.02);
}

.form-control option {
    background: var(--bg);
    color: var(--fg);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

/* Custom Select */
.select-wrapper {
    position: relative;
}

.select-wrapper select {
    appearance: none;
    -webkit-appearance: none;
    padding-right: 3rem;
    cursor: pointer;
}

.select-icon {
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--gray-light);
}

.text-sm {
    font-size: 0.8rem;
}

/* ROI Calculator Sliders */

/* Wrapper to hold slider + hint arrow overlay */
.slider-wrapper {
    position: relative;
    touch-action: pan-x; /* Pass horizontal gestures to the range input */
}

/* Hint arrow that appears on hover, showing direction */
.slider-hint-arrow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    opacity: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: monospace;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--fg);
    white-space: nowrap;
    transition: opacity 0.3s ease;
    text-transform: uppercase;
}

.slider-hint-arrow .arrow-line {
    width: 32px;
    height: 1px;
    background: var(--fg);
    position: relative;
    animation: slideHintLeft 1.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.slider-hint-arrow .arrow-line::before,
.slider-hint-arrow .arrow-line::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 6px;
    height: 1px;
    background: var(--fg);
}

.slider-hint-arrow .arrow-line::before {
    left: 0;
    transform-origin: left center;
    transform: translateY(-50%) rotate(-35deg);
}

.slider-hint-arrow .arrow-line::after {
    right: 0;
    transform-origin: right center;
    transform: translateY(-50%) rotate(35deg);
}

@keyframes slideHintLeft {
    0%   { transform: translateX(12px); opacity: 0; }
    20%  { opacity: 1; }
    80%  { opacity: 1; }
    100% { transform: translateX(-12px); opacity: 0; }
}

.roi-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: var(--gray-dark);
    outline: none;
    border-radius: 2px;
    cursor: grab;
    transition: opacity 0.25s ease;
    touch-action: pan-x; /* Horizontal drag = range, vertical = scroll */
    -webkit-tap-highlight-color: transparent;
}

.roi-slider:active {
    cursor: grabbing;
}

/* Thumb — default */
.roi-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--fg);
    cursor: grab;
    border-radius: 0;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
                box-shadow 0.25s ease;
}

.roi-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--fg);
    cursor: grab;
    border-radius: 0;
    border: none;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
                box-shadow 0.25s ease;
}

/* Thumb grows on hover */
.roi-slider::-webkit-slider-thumb:hover {
    transform: scale(1.25);
}

.roi-slider::-moz-range-thumb:hover {
    transform: scale(1.25);
}

/* Thumb grows while the hint auto-animation is playing */
.roi-slider.is-hinting::-webkit-slider-thumb {
    transform: scale(1.2);
    box-shadow: 0 0 0 4px rgba(255,255,255,0.12);
    animation: thumbBounce 1.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.roi-slider.is-hinting::-moz-range-thumb {
    transform: scale(1.2);
    box-shadow: 0 0 0 4px rgba(255,255,255,0.12);
    animation: thumbBounce 1.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes thumbBounce {
    0%   { box-shadow: 0 0 0 4px rgba(255,255,255,0.00); }
    40%  { box-shadow: 0 0 0 6px rgba(255,255,255,0.15); }
    100% { box-shadow: 0 0 0 4px rgba(255,255,255,0.00); }
}

/* Show hint label on wrapper hover (desktop) */
.slider-wrapper:hover .slider-hint-arrow {
    opacity: 1;
}

/* Show hint label on mobile via JS-added class */
.slider-wrapper.hinting-active .slider-hint-arrow {
    opacity: 1;
}

/* Hide hint once user has interacted */
.slider-wrapper.used .slider-hint-arrow {
    display: none;
}

/* Larger thumb on touch screens for easier dragging */
@media (pointer: coarse) {
    .roi-slider::-webkit-slider-thumb {
        width: 44px;
        height: 44px;
    }

    .roi-slider::-moz-range-thumb {
        width: 44px;
        height: 44px;
    }
}