/* ==========================================================================
   if-then — site styles
   ========================================================================== */

@font-face {
    font-family: "Figtree";
    src: url("../fonts/figtree-latin-wght.woff2") format("woff2");
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

:root {
    --ink: #231f20;        /* "then" in het logo */
    --ink-soft: #4b5258;
    --paper: #ffffff;
    --mist: #f1f6fa;
    --line: #dce5ec;
    --blue: #0079c1;       /* "if" in het logo */
    --blue-deep: #00609a;

    --font: "Figtree", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --measure: 64ch;
    --container: 72rem;
    --gutter: clamp(1rem, 4vw, 2.5rem);
    --header-h: 4.5rem;
    --radius: 0.75rem;
}

/* Basis
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
    -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--ink);
    background: var(--paper);
    text-rendering: optimizeLegibility;
}

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

h1,
h2,
h3,
h4 {
    margin: 0 0 0.75rem;
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.01em;
}

h2 {
    font-size: clamp(1.75rem, 1.4rem + 1.5vw, 2.375rem);
    letter-spacing: -0.02em;
}

h3 {
    font-size: 1.25rem;
}

h4 {
    font-size: 0.9375rem;
    color: var(--ink-soft);
}

p {
    margin: 0 0 1rem;
}

a {
    color: var(--blue-deep);
    text-underline-offset: 0.2em;
}

a:hover {
    color: var(--blue);
}

:focus-visible {
    outline: 3px solid var(--blue);
    outline-offset: 3px;
    border-radius: 2px;
}

strong {
    font-weight: 650;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -10rem;
    z-index: 100;
    padding: 0.5rem 1rem;
    background: var(--ink);
    color: var(--paper);
}

.skip-link:focus {
    top: 1rem;
}

/* Knoppen
   ========================================================================== */

.button {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border: 2px solid var(--blue);
    border-radius: 999px;
    background: var(--blue);
    color: var(--paper);
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}

.button:hover {
    background: var(--blue-deep);
    border-color: var(--blue-deep);
    color: var(--paper);
}

.button-quiet {
    background: transparent;
    color: var(--blue-deep);
}

.button-quiet:hover {
    background: var(--mist);
    border-color: var(--blue-deep);
    color: var(--blue-deep);
}

.button-light {
    background: var(--paper);
    border-color: var(--paper);
    color: var(--blue-deep);
}

.button-light:hover {
    background: var(--mist);
    border-color: var(--mist);
    color: var(--blue-deep);
}

/* Header & navigatie
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--line);
    -webkit-backdrop-filter: saturate(160%) blur(8px);
    backdrop-filter: saturate(160%) blur(8px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-h);
}

.brand img {
    width: 119px;
}

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

.site-nav a {
    display: block;
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius);
    color: var(--ink);
    font-weight: 500;
    text-decoration: none;
}

.site-nav a:hover {
    background: var(--mist);
    color: var(--ink);
}

.site-nav .nav-cta {
    margin-left: 0.5rem;
    border-radius: 999px;
    background: var(--blue);
    color: var(--paper);
}

.site-nav .nav-cta:hover {
    background: var(--blue-deep);
    color: var(--paper);
}

.nav-toggle {
    display: none;
}

@media (max-width: 47.99rem) {
    .js .nav-toggle {
        display: inline-flex;
        align-items: center;
        gap: 0.6rem;
        padding: 0.5rem 0.75rem;
        border: 1px solid var(--line);
        border-radius: 999px;
        background: var(--paper);
        color: var(--ink);
        font: inherit;
        font-weight: 500;
        cursor: pointer;
    }

    .nav-toggle-bars,
    .nav-toggle-bars::before,
    .nav-toggle-bars::after {
        display: block;
        width: 18px;
        height: 2px;
        background: currentColor;
        transition: transform 0.2s, background-color 0.2s;
    }

    .nav-toggle-bars {
        position: relative;
    }

    .nav-toggle-bars::before,
    .nav-toggle-bars::after {
        content: "";
        position: absolute;
        left: 0;
    }

    .nav-toggle-bars::before {
        top: -6px;
    }

    .nav-toggle-bars::after {
        top: 6px;
    }

    .nav-toggle[aria-expanded="true"] .nav-toggle-bars {
        background: transparent;
    }

    .nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
        transform: translateY(6px) rotate(45deg);
    }

    .nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
        transform: translateY(-6px) rotate(-45deg);
    }

    .js .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--paper);
        border-bottom: 1px solid var(--line);
        box-shadow: 0 12px 24px -16px rgba(35, 31, 32, 0.25);
    }

    .js .site-nav.is-open {
        display: block;
    }

    .js .site-nav ul {
        flex-direction: column;
        align-items: stretch;
        padding: 0.5rem var(--gutter) 1rem;
    }

    .js .site-nav a {
        padding: 0.8rem 0.75rem;
    }

    .js .site-nav .nav-cta {
        margin: 0.5rem 0 0;
        text-align: center;
    }

    /* Zonder JavaScript: menu gewoon onder het logo */
    html:not(.js) .header-inner {
        flex-wrap: wrap;
        padding-block: 0.75rem;
    }
}

/* Hero
   ========================================================================== */

.hero {
    padding-block: clamp(3rem, 8vw, 6.5rem) clamp(3rem, 7vw, 5.5rem);
}

.hero-inner {
    display: grid;
    gap: 1.75rem 3rem;
    align-items: center;
}

@media (min-width: 48rem) {
    .hero-inner {
        grid-template-columns: auto 1fr;
    }
}

.hero-portrait {
    width: clamp(112px, 16vw, 150px);
    aspect-ratio: 1;
    border-radius: 50%;
    outline: 3px solid var(--blue);
    outline-offset: 6px;
    margin: 9px;
}

.hello {
    margin-bottom: 0.5rem;
    color: var(--blue-deep);
    font-size: 1.25rem;
    font-weight: 600;
}

.hero h1 {
    max-width: 17em;
    margin-bottom: 1.25rem;
    font-size: clamp(2rem, 1.2rem + 3.2vw, 3.5rem);
    line-height: 1.1;
    letter-spacing: -0.025em;
}

.hero-lead {
    max-width: 38rem;
    font-size: 1.1875rem;
    color: var(--ink-soft);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.75rem;
}

/* Secties
   ========================================================================== */

.section {
    padding-block: clamp(3.5rem, 8vw, 6rem);
}

.section-tinted {
    background: var(--mist);
}

.split {
    display: grid;
    gap: clamp(2rem, 5vw, 4.5rem);
}

@media (min-width: 56rem) {
    .split {
        grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    }
}

.split-intro p,
.service-body p {
    max-width: var(--measure);
}

/* Aanpak: stappen */

.steps {
    margin: 1.25rem 0 0;
    padding: 0;
    list-style: none;
    counter-reset: step;
}

.steps li {
    position: relative;
    padding: 0 0 1.5rem 3.5rem;
    counter-increment: step;
}

.steps li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: -0.1rem;
    display: grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    border: 2px solid var(--blue);
    border-radius: 50%;
    background: var(--paper);
    color: var(--blue-deep);
    font-weight: 650;
    font-size: 0.9375rem;
}

.steps li:not(:last-child)::after {
    content: "";
    position: absolute;
    left: calc(1.125rem - 1px);
    top: 2.3rem;
    bottom: 0.1rem;
    width: 2px;
    background: var(--line);
}

.steps li:last-child {
    padding-bottom: 0;
}

/* Diensten */

.service {
    padding-block: 2.5rem;
    border-top: 1px solid var(--line);
}

.service:first-of-type {
    margin-top: 1.5rem;
}

.service-head {
    margin-bottom: 1.25rem;
}

.service-body {
    max-width: var(--measure);
}

.service-head h3 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.service-tagline {
    color: var(--blue-deep);
    font-weight: 500;
}

.examples {
    margin: 0 0 1rem;
}

.examples div {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--line);
}

.examples div:first-child {
    border-top: 1px solid var(--line);
}

.examples dt {
    font-weight: 600;
}

.examples dd {
    margin: 0;
    color: var(--ink-soft);
}

.questions {
    margin: 0 0 1.25rem;
    padding: 0;
    list-style: none;
}

.questions li {
    position: relative;
    padding: 0.3rem 0 0.3rem 2rem;
}

.questions li::before {
    content: "?";
    position: absolute;
    left: 0;
    top: 0.3rem;
    width: 1.35rem;
    color: var(--blue);
    font-weight: 700;
    text-align: center;
}

/* Over mij */

.plain-list {
    margin: 0;
    padding-left: 1.2rem;
}

.plain-list li + li {
    margin-top: 0.3rem;
}

.tech {
    display: grid;
    gap: 1.75rem;
    margin-top: 1.25rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.tags li {
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
    background: var(--mist);
    font-size: 0.9375rem;
    font-weight: 500;
}

/* Contact */

.section-contact {
    padding-top: 0;
}

.contact-card {
    display: grid;
    gap: 2rem 4rem;
    padding: clamp(2rem, 5vw, 3.5rem);
    border-radius: 1.5rem;
    background: var(--blue);
    color: var(--paper);
}

@media (min-width: 56rem) {
    .contact-card {
        grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    }
}

.contact-card a {
    color: var(--paper);
}

.contact-card .button-light {
    color: var(--blue-deep);
}

.contact-card :focus-visible {
    outline-color: var(--paper);
}

.contact-details {
    font-style: normal;
    font-size: 1.1875rem;
    line-height: 1.7;
    align-self: center;
}

.contact-lines {
    display: block;
    margin-top: 1.25rem;
    font-weight: 600;
}

/* Footer
   ========================================================================== */

.site-footer {
    padding-block: 1.5rem;
    font-size: 0.9375rem;
    color: var(--ink-soft);
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.5rem 1.5rem;
}

.site-footer p {
    margin: 0;
}

.site-footer ul {
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-footer a {
    color: var(--ink-soft);
}

/* Foutpagina
   ========================================================================== */

.error-page {
    max-width: 36rem;
    margin: 0 auto;
    padding: 4rem var(--gutter);
}

.error-page img {
    width: 119px;
    margin-bottom: 2.5rem;
}

.error-page h1 {
    font-size: 1.75rem;
}