/*
    Modern static styling for Design Revolutions.
    Sample usage: open index.html in a browser to preview the site locally.

    Design notes:
    - The colour scheme stays close to the original red, black and white identity.
    - Type and spacing use a consistent scale so pages feel cleaner and easier to scan.
    - The layout is mobile first, then expands into wider grids on larger screens.
*/
:root
{
    --colour-red: #d71920;
    --colour-red-dark: #a90f15;
    --colour-black: #111111;
    --colour-charcoal: #242424;
    --colour-grey: #686868;
    --colour-border: #e8e8e8;
    --colour-soft: #f7f7f7;
    --colour-white: #ffffff;
    --shadow-soft: 0 18px 55px rgba(17, 17, 17, 0.08);
    --shadow-card: 0 12px 34px rgba(17, 17, 17, 0.07);
    --radius-large: 28px;
    --radius-medium: 18px;
    --radius-small: 12px;
    --site-width: 1180px;
}

*
{
    box-sizing: border-box;
}

html
{
    font-size: 16px;
    scroll-behavior: smooth;
}

body
{
    margin: 0;
    background:
        radial-gradient(circle at top left, rgba(215, 25, 32, 0.08), transparent 34rem),
        linear-gradient(180deg, #ffffff 0%, #f5f5f5 100%);
    color: var(--colour-charcoal);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: clamp(1rem, 0.96rem + 0.18vw, 1.1rem);
    line-height: 1.65;
    text-rendering: optimizeLegibility;
}

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

a
{
    color: inherit;
}

.skip-link
{
    position: absolute;
    left: -999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip-link:focus
{
    left: 1rem;
    top: 1rem;
    width: auto;
    height: auto;
    padding: 0.7rem 1rem;
    background: var(--colour-black);
    color: var(--colour-white);
    border-radius: var(--radius-small);
    z-index: 100;
}

.site-header
{
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid rgba(17, 17, 17, 0.08);
    backdrop-filter: blur(18px);
}

.site-header-inner
{
    width: min(var(--site-width), calc(100% - 2rem));
    margin: 0 auto;
    padding: 1.15rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.4rem;
}

.brand
{
    display: flex;
    align-items: center;
    gap: 0.9rem;
    min-width: 0;
    color: var(--colour-black);
    text-decoration: none;
}

.site-logo
{
    display: block;
    width: clamp(190px, 18vw, 248px);
    height: auto;
    flex: 0 0 auto;
}

.brand-copy
{
    display: grid;
    gap: 0.05rem;
}

.brand-title
{
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.brand-description
{
    color: var(--colour-grey);
    font-size: 0.82rem;
    line-height: 1.35;
}

.main-navigation ul
{
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}

.main-navigation a
{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.5rem;
    padding: 0.55rem 0.85rem;
    border-radius: 999px;
    color: var(--colour-charcoal);
    font-size: 0.94rem;
    font-weight: 700;
    text-decoration: none;
    transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.main-navigation a:hover,
.main-navigation a:focus-visible,
.main-navigation a[aria-current="page"]
{
    background: rgba(215, 25, 32, 0.09);
    color: var(--colour-red-dark);
}

.main-navigation .nav-cta
{
    background: var(--colour-black);
    color: var(--colour-white);
}

.main-navigation .nav-cta:hover,
.main-navigation .nav-cta:focus-visible,
.main-navigation .nav-cta[aria-current="page"]
{
    background: var(--colour-red);
    color: var(--colour-white);
    transform: translateY(-1px);
}

main
{
    width: min(var(--site-width), calc(100% - 2rem));
    margin: 0 auto;
}

.hero-section
{
    min-height: calc(100vh - 5.5rem);
    padding: clamp(4rem, 8vw, 7.5rem) 0;
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(17rem, 0.55fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 5rem);
}

.hero-content
{
    max-width: 760px;
}

.eyebrow,
.section-label,
.panel-kicker
{
    margin: 0 0 0.85rem;
    color: var(--colour-red);
    font-size: 0.82rem;
    font-weight: 900;
    letter-spacing: 0.13em;
    line-height: 1.2;
    text-transform: uppercase;
}

h1,
h2,
h3,
p
{
    margin-top: 0;
}

h1,
h2,
h3
{
    color: var(--colour-black);
    font-weight: 850;
    letter-spacing: -0.045em;
    line-height: 1.03;
}

h1
{
    max-width: 12ch;
    margin-bottom: 1.35rem;
    font-size: clamp(3rem, 8vw, 6.7rem);
}

h2
{
    margin-bottom: 1rem;
    font-size: clamp(2rem, 4.2vw, 4rem);
}

h3
{
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
    letter-spacing: -0.025em;
}

p
{
    margin-bottom: 1.2rem;
}

.hero-lede
{
    max-width: 46rem;
    margin-bottom: 2rem;
    color: #393939;
    font-size: clamp(1.2rem, 2.2vw, 1.55rem);
    line-height: 1.45;
}

.hero-actions
{
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.button
{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3.1rem;
    padding: 0.85rem 1.25rem;
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    font: inherit;
    font-weight: 800;
    line-height: 1.2;
    text-decoration: none;
    transition: box-shadow 180ms ease, transform 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible
{
    transform: translateY(-2px);
}

.button-primary
{
    background: var(--colour-red);
    color: var(--colour-white);
    box-shadow: 0 12px 30px rgba(215, 25, 32, 0.24);
}

.button-primary:hover,
.button-primary:focus-visible
{
    background: var(--colour-red-dark);
}

.button-secondary
{
    background: var(--colour-white);
    color: var(--colour-black);
    box-shadow: inset 0 0 0 1px var(--colour-border);
}

.button-secondary:hover,
.button-secondary:focus-visible
{
    box-shadow: inset 0 0 0 1px rgba(215, 25, 32, 0.35), 0 10px 26px rgba(17, 17, 17, 0.08);
}

.button-light
{
    background: var(--colour-white);
    color: var(--colour-red-dark);
}

.hero-panel,
.feature-card,
.customer-card,
.service-card,
.contact-form,
.contact-card
{
    background: rgba(255, 255, 255, 0.86);
    border: 1px solid rgba(17, 17, 17, 0.08);
    box-shadow: var(--shadow-card);
}

.hero-panel
{
    position: relative;
    padding: clamp(1.4rem, 3vw, 2rem);
    border-radius: var(--radius-large);
    overflow: hidden;
}

.hero-panel::before
{
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 0.45rem;
    background: var(--colour-red);
}

.feature-list
{
    margin: 0;
    padding: 0;
    list-style: none;
}

.feature-list li
{
    position: relative;
    padding: 0.95rem 0 0.95rem 2rem;
    border-top: 1px solid var(--colour-border);
    font-weight: 800;
}

.feature-list li::before
{
    content: "";
    position: absolute;
    left: 0;
    top: 1.35rem;
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 999px;
    background: var(--colour-red);
}

.content-section,
.page-hero
{
    padding: clamp(3.25rem, 7vw, 6.5rem) 0;
}

.compact-hero
{
    max-width: 900px;
}

.compact-hero h1
{
    max-width: 14ch;
    font-size: clamp(2.7rem, 6.8vw, 5.8rem);
}

.compact-hero p:not(.eyebrow)
{
    max-width: 45rem;
    color: var(--colour-grey);
    font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.split-section
{
    display: grid;
    grid-template-columns: minmax(16rem, 0.78fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 5rem);
    border-top: 1px solid var(--colour-border);
}

.prose
{
    max-width: 42rem;
    color: #383838;
}

.prose p:first-child
{
    color: var(--colour-black);
    font-size: 1.35rem;
    font-weight: 750;
    line-height: 1.45;
}

.section-heading
{
    max-width: 760px;
    margin-bottom: clamp(1.8rem, 4vw, 3rem);
}

.card-grid,
.customer-grid,
.service-grid
{
    display: grid;
    gap: 1rem;
}

.three-column-grid
{
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.customer-card,
.service-card
{
    border-radius: var(--radius-medium);
}

.feature-card
{
    padding: clamp(1.35rem, 3vw, 2rem);
}

.feature-card p,
.service-card p,
.customer-card span
{
    color: var(--colour-grey);
}

.cta-section
{
    margin: clamp(2.5rem, 6vw, 5rem) 0;
    padding: clamp(2rem, 5vw, 4rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    border-radius: var(--radius-large);
    background:
        radial-gradient(circle at right top, rgba(255, 255, 255, 0.26), transparent 20rem),
        linear-gradient(135deg, var(--colour-red) 0%, var(--colour-red-dark) 100%);
    color: var(--colour-white);
    box-shadow: var(--shadow-soft);
}

.cta-section h2,
.cta-section p,
.cta-section .section-label
{
    color: var(--colour-white);
}

.cta-section h2
{
    max-width: 14ch;
}

.cta-section p:last-child
{
    margin-bottom: 0;
    max-width: 42rem;
}

.customer-grid
{
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.customer-card
{
    min-height: 15.5rem;
    padding: 1.2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 1rem;
}

.customer-logo
{
    display: block;
    width: 100%;
    max-height: 5.5rem;
    object-fit: contain;
    object-position: left center;
    filter: grayscale(0.12);
}

.customer-card p
{
    margin-bottom: 0.25rem;
    color: var(--colour-black);
    font-weight: 850;
    line-height: 1.25;
}

.customer-card span
{
    display: block;
    font-size: 0.95rem;
    line-height: 1.45;
}

.highlight-strip
{
    margin-bottom: clamp(2rem, 5vw, 4rem);
    padding: clamp(1.5rem, 3vw, 2.25rem);
    border-left: 0.35rem solid var(--colour-red);
    border-radius: var(--radius-medium);
    background: var(--colour-white);
    box-shadow: var(--shadow-card);
}

.highlight-strip p
{
    max-width: 62rem;
    margin-bottom: 0;
    color: var(--colour-black);
    font-size: clamp(1.15rem, 2.5vw, 1.55rem);
    font-weight: 800;
    line-height: 1.35;
}

.service-grid
{
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.service-card
{
    position: relative;
    padding: clamp(1.4rem, 3vw, 2.2rem);
    overflow: hidden;
}

.service-card::after
{
    content: "";
    position: absolute;
    right: -2.5rem;
    top: -2.5rem;
    width: 7rem;
    height: 7rem;
    border-radius: 999px;
    background: rgba(215, 25, 32, 0.08);
}

.service-number
{
    display: inline-flex;
    margin-bottom: 1.5rem;
    color: var(--colour-red);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.13em;
}

.service-card h2
{
    font-size: clamp(1.55rem, 3vw, 2.35rem);
}

.contact-layout
{
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.72fr);
    align-items: start;
    gap: clamp(1.5rem, 4vw, 3rem);
}

.contact-form,
.contact-card
{
    padding: clamp(1.35rem, 3vw, 2.2rem);
    border-radius: var(--radius-large);
}

.form-row
{
    margin-bottom: 1.1rem;
}

label
{
    display: block;
    margin-bottom: 0.45rem;
    color: var(--colour-black);
    font-size: 0.94rem;
    font-weight: 800;
}

input,
textarea
{
    width: 100%;
    padding: 0.95rem 1rem;
    border: 1px solid var(--colour-border);
    border-radius: var(--radius-small);
    background: var(--colour-white);
    color: var(--colour-black);
    font: inherit;
    outline: none;
    transition: border 180ms ease, box-shadow 180ms ease;
}

input:focus,
textarea:focus
{
    border-color: rgba(215, 25, 32, 0.55);
    box-shadow: 0 0 0 4px rgba(215, 25, 32, 0.1);
}

textarea
{
    min-height: 11rem;
    resize: vertical;
}

.form-note
{
    display: none;
    margin: 1rem 0 0;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-small);
    background: rgba(215, 25, 32, 0.08);
    color: var(--colour-red-dark);
    font-weight: 800;
}

.contact-card h2
{
    font-size: clamp(1.7rem, 3vw, 2.5rem);
}

.address-block
{
    padding-top: 1.1rem;
    border-top: 1px solid var(--colour-border);
}

.address-title
{
    margin-bottom: 0.35rem;
    color: var(--colour-black);
    font-weight: 850;
}

.site-footer
{
    width: min(var(--site-width), calc(100% - 2rem));
    margin: 0 auto;
    padding: 2.5rem 0 3rem;
    border-top: 1px solid var(--colour-border);
    color: var(--colour-grey);
    font-size: 0.92rem;
}

.site-footer p
{
    margin-bottom: 0;
}

@media (max-width: 980px)
{
    .site-header
    {
        position: static;
    }

    .site-header-inner
    {
        align-items: flex-start;
        flex-direction: column;
    }

    .main-navigation ul
    {
        flex-wrap: wrap;
    }

    .hero-section,
    .split-section,
    .contact-layout
    {
        grid-template-columns: 1fr;
    }

    .hero-section
    {
        min-height: auto;
    }

    .three-column-grid,
    .customer-grid
    {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 680px)
{
    .site-header-inner,
    main,
    .site-footer
    {
        width: min(100% - 1.2rem, var(--site-width));
    }

    .brand
    {
        align-items: flex-start;
    }

    .site-logo
    {
        width: min(220px, 72vw);
    }

    .main-navigation
    {
        width: 100%;
    }

    .main-navigation ul
    {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.5rem;
    }

    .main-navigation a
    {
        width: 100%;
        background: var(--colour-white);
        box-shadow: inset 0 0 0 1px var(--colour-border);
    }

    h1
    {
        max-width: 10ch;
    }

    .hero-actions,
    .cta-section
    {
        align-items: stretch;
        flex-direction: column;
    }

    .button
    {
        width: 100%;
    }

    .three-column-grid,
    .customer-grid,
    .service-grid
    {
        grid-template-columns: 1fr;
    }

    .customer-card
    {
        min-height: 13rem;
    }
}