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

:root {
    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2rem;
    --space-5: 3rem;
    --max-width: 75rem;
    --radius-1: 0.75rem;
    --radius-2: 1rem;
    --radius-3: 1.5rem;
    --radius-4: 2.5rem;
    --border-1: 0.125rem;
    --font-hero: clamp(2.5rem, 2.2rem + 1vw, 3rem);
    --font-title: clamp(1.6rem, 1.4rem + 0.5vw, 1.8rem);
    --font-body: 1rem;
}

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #000;
    background: #fff;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

header {
    background: #fff;
    padding: var(--space-4) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: none;
}

.header-content {
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "logo nav action";
    align-items: center;
    gap: var(--space-3);
}

.logo {
    grid-area: logo;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-links {
    grid-area: nav;
    display: flex;
    gap: var(--space-5);
    justify-content: center;
    flex-wrap: wrap;
}

.logo img {
    width: 2.75rem;
    height: 2.75rem;
    display: block;
    object-fit: contain;
}

.nav-links a {
    text-decoration: none;
    color: #000;
    font-weight: 600;
    letter-spacing: 0.01em;
    border-bottom: var(--border-1) solid transparent;
    padding-bottom: 0.25rem;
    transition: border-color 0.2s ease;
    text-transform: lowercase;
}

.nav-links a:hover {
    border-color: #000;
}

.header-action {
    grid-area: action;
    justify-self: end;
    padding: 0.5rem 1rem;
    border: var(--border-1) solid #000;
    background: #ffd400;
    color: #000;
    text-decoration: none;
    font-weight: 800;
    border-radius: 999rem;
    transition: background 0.15s ease, color 0.15s ease, transform 0.12s ease;
}

.header-action:hover {
    background: #000;
    color: #fff;
    transform: translateY(-0.0625rem);
}

.hero {
    padding: 4rem 0 11rem;
    margin-bottom: 2.5rem;
}

.hero .container {
    border: var(--border-1) solid #000;
    border-radius: var(--radius-4);
    padding: 3rem 2rem 0;
    text-align: center;
    position: relative;
    overflow: visible;
    background: #fff;
}

.hero-content {
    position: relative;
    padding-bottom: 11rem;
}

.hero h2 {
    font-size: clamp(2rem, 1.8rem + 0.8vw, 2.5rem);
    font-weight: 900;
    margin-top: 1rem;
    margin-bottom: 0.375rem;
    line-height: 1.1;
}

.hero-logo {
    width: 3.5rem;
    height: 3.5rem;
    display: block;
    margin: 0 auto;
}

.hero-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    flex-wrap: wrap;
    width: 100%;
    padding: 0 2rem;
}

.hero-top .btn {
    white-space: nowrap;
    position: relative;
    z-index: 1;
    background: #fff;
}

.hero-top .hero-logo {
    margin: 0;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero p {
    font-size: 1.05rem;
    margin-bottom: 2.5rem;
    max-width: 40rem;
    margin-left: auto;
    margin-right: auto;
    color: #6b6b6b;
}

.cta-buttons {
    display: flex;
    gap: var(--space-2);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3.5rem;
}

.btn {
    padding: 0.5rem 1.25rem;
    border-radius: 999rem;
    text-decoration: none;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: var(--border-1) solid #000;
    transition: background 0.2s ease, color 0.2s ease;
}

.btn-primary {
    background: #000;
    color: #fff;
}

.btn-primary:hover {
    background: #fff;
    color: #000;
}

/* Hero phone mockups positioned overlapping the bottom border */

.hero-phones {
    position: absolute;
    left: 50%;
    transform: translate(-50%, 60%);
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    width: 100%;
    max-width: 48rem;
    pointer-events: none;
}

.hero-mockup {
    position: relative;
    width: 12rem;
    max-width: 36%;
}

.hero-mockup.side {
    width: 10rem;
    max-width: 30%;
}

.hero-mockup.center {
    width: 14rem;
    max-width: 42%;
}

.hero-mockup .frame {
    width: 100%;
    display: block;
}

.hero-mockup .shot {
    position: absolute;
    top: 8%;
    left: 8%;
    width: 84%;
    height: 84%;
    display: block;
    object-fit: cover;
    border-radius: var(--radius-1);
    border: none;
}

.hero-mockup .shot-video {
    position: absolute;
    top: 8%;
    left: 8%;
    width: 84%;
    height: 84%;
    display: block;
    object-fit: cover;
    border-radius: 0;
    border: none;
    background: #000;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.hero-mockup .shot-video.ready {
    opacity: 1;
}

/* Tablet and smaller screens */
@media (max-width: 64rem) {
    .hero { padding: 4rem 0 10rem; }
    .hero .container { padding: 3rem 1.5rem 0; }
    .hero-content { padding-bottom: 9rem; }
    .hero h2 {
        margin-top: 1.25rem;
    }
    .hero-phones { max-width: 44rem; }
    .features-grid .feature-card {
        flex: 0 0 calc(33.333% - 1.25rem);
    }
    .stats .stat-item {
        flex: 0 0 calc(33.333% - 1.33rem);
    }
    .footer-sitemap {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ensure following sections aren't overlapped on smaller screens */
@media (max-width: 56.25rem) {
    .hero { padding: 4rem 0 8rem; }
    .hero .container { padding: 3rem 1.25rem 0; }
    .hero-content { padding-bottom: 7rem; }
    .hero-phones { transform: translate(-50%, 50%); gap: 1rem; max-width: 40rem; }
    .hero-top { gap: var(--space-2); }
    .hero-mockup { max-width: 28%; width: 8rem; }
    .hero-mockup.center { max-width: 32%; width: 9rem; }
    .hero-mockup.side { max-width: 22%; width: 6rem; }
}

.btn-secondary {
    background: #fff;
    color: #000;
}

.btn-secondary:hover {
    background: #000;
    color: #fff;
}

.section,
.features,
.highlight {
    padding: 4.375rem 0;
    background: #fff;
}

.features h2,
.section-title {
    text-align: center;
    font-size: var(--font-title);
    margin: 0 auto 1.5rem;
    padding: 0 0 0.5rem;
    color: #000;
    font-weight: 800;
    line-height: 1;
    display: block;
    width: fit-content;
}

.section-title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: 1.875rem;
    flex-wrap: nowrap;
}

.carousel-btn {
    border: var(--border-1) solid #000;
    background: #fff;
    color: #000;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    font-size: 1.15rem;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
}

.carousel-btn:hover:not(:disabled) {
    background: #000;
    color: #fff;
    transform: translateY(-0.0625rem);
}

.carousel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Ensure section title and carousel buttons are vertically centered */
.section-title-row .section-title {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0;
}

.carousel-btn {
    align-self: center;
}

.features-carousel-wrapper {
    overflow: hidden;
    width: 100%;
    padding-left: var(--border-1);
}

.features-grid {
    display: flex;
    gap: 1.875rem;
    transition: transform 0.3s ease;
}

.features-grid .feature-card {
    flex: 0 0 calc(25% - 1.40625rem);
    min-width: 0;
}

.feature-card {
    background: #fff;
    padding: 1.5rem;
    border-radius: var(--radius-2);
    border: var(--border-1) solid #000;
}

.feature-card:hover {
    transform: none;
    background: #000;
    color: #fff;
    border-color: #fff;
    filter: none;
}

.feature-card:hover h3,
.feature-card:hover p {
    color: #fff;
}

.feature-card:hover .feature-icon {
    background: #000;
    color: #fff;
    border-color: #fff;
}
@keyframes eink-flash {
    0% {
        background: #fff;
        color: #000;
        filter: none;
    }
    55% {
        background: #000;
        color: #fff;
        filter: invert(1);
    }
    100% {
        background: #fff;
        color: #000;
        filter: none;
    }
}

.stat-item {
    background: transparent;
    padding: 0.375rem 0;
    border-radius: 0;
    border: none;
    transition: none;
    text-align: center;
}

.screenshot-label {
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.screenshot-frame {
    position: relative;
    width: 100%;
    max-width: none;
    margin: 0 auto;
}

.screenshot-frame .frame {
    width: 100%;
    display: block;
}

.screenshot-frame .shot {
    position: absolute;
    top: 8%;
    left: 8%;
    width: 84%;
    height: 84%;
    display: block;
    object-fit: cover;
    border-radius: var(--radius-1);
    border: none;
}

.feature-icon {
    width: 100%;
    height: auto;
    border: var(--border-1) solid #000;
    border-radius: var(--radius-1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-3);
    background: #fff;
    overflow: hidden;
    padding: 0;
}

.feature-icon img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 0;
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-2);
    color: #000;
    line-height: 1.2;
}

.feature-card p {
    color: #111;
}

.faq-list {
    width: 100%;
}

.download-container {
    border: var(--border-1) solid #000;
    border-radius: var(--radius-2);
    padding: 1.5rem;
    background: #fff;
    text-align: center;
    width: 100%;
}

.download-container p {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.download-container .cta-buttons {
    margin-bottom: 0;
}

.faq-item {
    border: var(--border-1) solid #000;
    border-radius: var(--radius-2);
    margin-bottom: var(--space-2);
    overflow: hidden;
    background: #fff;
}

.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: #fff;
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-2);
    font-size: 1.1rem;
    font-weight: 700;
    color: #000;
    transition: background 0.15s ease;
}

.faq-question:hover {
    background: #fff;
}

.faq-item.active .faq-question {
    background: #fff;
    color: #000;
}

.faq-item.active .faq-question:hover {
    background: #fff;
    color: #000;
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 1.5rem 1.25rem;
}

.faq-answer p {
    color: #333;
    line-height: 1.6;
    margin: 0;
}

.perfect-carousel-wrapper {
    overflow: hidden;
    width: 100%;
}

.stats {
    display: flex;
    gap: var(--space-4);
    text-align: center;
    transition: transform 0.3s ease;
}

.stats .stat-item {
    flex: 0 0 calc(25% - 1.5rem);
    min-width: 0;
}

.stat-item,
.screenshot-frame {
    margin: 0;
}

footer {
    background: #000;
    color: #fff;
    padding: 3rem 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    text-align: left;
}

.footer-logo .logo {
    margin-bottom: var(--space-2);
}

.footer-logo .logo img {
    filter: brightness(0) invert(1);
}

.footer-logo .logo h1 {
    color: #fff;
}

.footer-logo p {
    color: #999;
    font-size: 0.9rem;
    margin: 0;
}

.footer-sitemap {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.sitemap-column {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.sitemap-column h3 {
    color: #fff;
    font-size: 1rem;
    font-weight: 800;
    margin: 0 0 0.5rem 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sitemap-column a {
    color: #ccc;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.sitemap-column a:hover {
    color: #fff;
}

@media (max-width: 56.25rem) {
    .header-content {
        grid-template-columns: auto 1fr auto;
        grid-template-areas:
            "logo action action"
            "nav nav nav";
        align-items: center;
        justify-items: start;
    }

    .header-action {
        justify-self: end;
    }

    .logo {
        justify-self: start;
    }

    .nav-links {
        justify-self: start;
        justify-content: center;
    }

    .features-grid .feature-card {
        flex: 0 0 calc(50% - 0.9375rem);
    }

    .stats .stat-item {
        flex: 0 0 calc(50% - 1rem);
    }
}

@media (max-width: 48rem) {
    .hero {
        padding: 3rem 0 6rem;
        margin-bottom: 1.5rem;
    }

    .hero .container {
        padding: 2.75rem 1.25rem 0;
        margin: 0 0.875rem;
    }
    
    .hero-content {
        padding-bottom: 5rem;
    }

    .hero h2 {
        font-size: 1.8rem;
        margin-top: 1rem;
    }

    .hero-top {
        padding: 0 1.25rem;
    }

    .hero-top .btn {
        padding: 0.375rem 0.875rem;
        font-size: 0.875rem;
    }

    .hero-logo {
        width: 3rem;
    }

    .features-grid .feature-card {
        flex: 0 0 100%;
    }

    .stats .stat-item {
        flex: 0 0 100%;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: left;
    }
    
    .footer-logo {
        text-align: left;
    }
    
    .footer-sitemap {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}