/* ==========================================================================
   28FiTech AG — design system
   Direction: "Swiss precision instrument". Hairline rules, generous air,
   engineered type, ONE accent (the client's own green). Palette sampled
   directly from their logo: #408d68 and #0f5f5e.
   ========================================================================== */

:root {
    /* Brand — sampled from 28FiTech's logo artwork */
    --green:      #408d68;
    --green-deep: #35785a;
    --teal:       #0f5f5e;
    --teal-deep:  #0b4746;

    /* Ground */
    --paper:      #fbfcfb;
    --paper-2:    #f4f7f5;
    --ink:        #0c1a18;
    --ink-2:      #3c4a47;
    --ink-3:      #6b7975;

    /* Lines — hairlines are the whole aesthetic; keep them honest */
    --line:       rgba(15, 95, 94, .14);
    --line-soft:  rgba(15, 95, 94, .08);
    --line-onink: rgba(255, 255, 255, .16);

    /* Type */
    --display: "Jost", "Century Gothic", ui-sans-serif, system-ui, sans-serif;
    --body:    "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, sans-serif;

    /* Rhythm */
    --shell:   1200px;
    --gutter:  clamp(1.25rem, 4vw, 2.5rem);
    --band:    clamp(4.5rem, 9vw, 8rem);
    --radius:  3px;          /* almost square — instrument, not app */

    --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ── Reset ─────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--body);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; height: auto; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 400; letter-spacing: -.015em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

/* Numerals should line up like an instrument readout */
.fi-num, time, address { font-variant-numeric: tabular-nums; }

/* ── Focus & skip link ─────────────────────────────────────────────────── */
:focus-visible {
    outline: 2px solid var(--green);
    outline-offset: 3px;
    border-radius: 2px;
}
.fi-skip {
    position: absolute; left: -9999px; top: 0; z-index: 200;
    background: var(--teal); color: #fff;
    padding: .75rem 1.25rem; font-size: .875rem; text-decoration: none;
}
.fi-skip:focus { left: 1rem; top: 1rem; }

/* ── Layout ────────────────────────────────────────────────────────────── */
.fi-shell {
    width: 100%;
    max-width: var(--shell);
    margin-inline: auto;
    padding-inline: var(--gutter);
}
.fi-band { padding-block: var(--band); position: relative; }
.fi-band--line { border-top: 1px solid var(--line); }
.fi-band--tint { background: var(--paper-2); }

/* Dark band — the deep teal ground */
.fi-band--ink {
    background: var(--teal);
    color: #eaf3f0;
}
.fi-band--ink h2, .fi-band--ink h3 { color: #fff; }

/* ── Type scale ────────────────────────────────────────────────────────── */
.fi-display {
    font-family: var(--display);
    font-weight: 300;
    font-size: clamp(2.4rem, 6.2vw, 4.6rem);
    line-height: 1.04;
    letter-spacing: -.025em;
    text-wrap: balance;
}
.fi-h2 {
    font-family: var(--display);
    font-weight: 300;
    font-size: clamp(1.9rem, 3.9vw, 3rem);
    line-height: 1.1;
    letter-spacing: -.02em;
    text-wrap: balance;
}
.fi-h3 {
    font-family: var(--display);
    font-weight: 400;
    font-size: clamp(1.15rem, 1.7vw, 1.375rem);
    line-height: 1.25;
    letter-spacing: -.01em;
    text-wrap: balance;
}
.fi-lead {
    font-size: clamp(1.05rem, 1.5vw, 1.2rem);
    line-height: 1.6;
    color: var(--ink-2);
    text-wrap: pretty;
    max-width: 46ch;
}
.fi-body { color: var(--ink-2); text-wrap: pretty; }

/* Binds a trailing phrase together so no single word is stranded on its own
   line. Set by no_orphan() in config.php. */
.fi-nowrap { white-space: nowrap; }
.fi-band--ink .fi-lead,
.fi-band--ink .fi-body { color: rgba(255, 255, 255, .8); }

/* Eyebrow — the small ruled label above each section title */
.fi-eyebrow {
    display: flex;
    align-items: center;
    gap: .75rem;
    font-size: .6875rem;
    font-weight: 600;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--green);
    margin-bottom: 1.25rem;
}
.fi-eyebrow::before {
    content: "";
    width: 1.75rem; height: 1px;
    background: currentColor;
    flex: none;
}
.fi-band--ink .fi-eyebrow { color: #8fd3b4; }

/* Section head block */
.fi-head { max-width: 44rem; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.fi-head .fi-lead { margin-top: 1.25rem; }

/* ── Buttons ───────────────────────────────────────────────────────────── */
.fi-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .875rem 1.65rem;
    font-family: var(--body);
    font-size: .9375rem;
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color .22s var(--ease), color .22s var(--ease),
                border-color .22s var(--ease), transform .22s var(--ease);
    white-space: nowrap;
}
.fi-btn:hover { transform: translateY(-1px); }
@media (prefers-reduced-motion: reduce) { .fi-btn:hover { transform: none; } }

/* Solid uses the deep teal, not the light green — white text on #408d68 is
   only 3.1:1. Dark ground keeps the CTA at AA. */
.fi-btn--solid { background: var(--teal); color: #fff; }
.fi-btn--solid:hover { background: var(--teal-deep); }

.fi-btn--ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.fi-btn--ghost:hover { border-color: var(--teal); background: rgba(15, 95, 94, .04); }

.fi-btn--onink { background: #fff; color: var(--teal); }
.fi-btn--onink:hover { background: #eaf3f0; }

/* ── Header ────────────────────────────────────────────────────────────── */
.fi-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(251, 252, 251, .88);
    backdrop-filter: saturate(1.6) blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color .3s var(--ease), background-color .3s var(--ease);
}
.fi-header.is-stuck {
    border-bottom-color: var(--line);
    background: rgba(251, 252, 251, .96);
}
.fi-header__inner {
    display: flex;
    align-items: center;
    gap: clamp(1rem, 3vw, 2.5rem);
    min-height: 78px;
}
.fi-brand { flex: none; display: block; line-height: 0; }
.fi-brand img { width: 190px; height: auto; }

.fi-nav { display: flex; gap: clamp(1rem, 2.4vw, 2.1rem); margin-inline-start: auto; }
.fi-nav__link {
    position: relative;
    font-size: .9375rem;
    text-decoration: none;
    color: var(--ink-2);
    padding-block: .35rem;
    transition: color .2s var(--ease);
}
.fi-nav__link::after {
    content: "";
    position: absolute; left: 0; right: 0; bottom: 0;
    height: 1px; background: var(--green);
    transform: scaleX(0); transform-origin: left;
    transition: transform .28s var(--ease);
}
.fi-nav__link:hover { color: var(--ink); }
.fi-nav__link:hover::after { transform: scaleX(1); }

.fi-header__cta { flex: none; padding: .7rem 1.35rem; }

.fi-burger {
    display: none;
    margin-inline-start: auto;
    width: 44px; height: 44px;
    background: none; border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 0; cursor: pointer;
    position: relative;
}
.fi-burger span {
    position: absolute; left: 12px; right: 12px; height: 1px;
    background: var(--ink);
    transition: transform .28s var(--ease), opacity .2s var(--ease);
}
.fi-burger span:nth-child(1) { top: 18px; }
.fi-burger span:nth-child(2) { top: 25px; }
.fi-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(3.5px) rotate(45deg); }
.fi-burger[aria-expanded="true"] span:nth-child(2) { transform: translateY(-3.5px) rotate(-45deg); }

/* Drawer. Uses [hidden] + an explicit display rule so the attribute actually
   wins — an author `display` on the element would otherwise defeat it. */
.fi-drawer {
    position: fixed; inset: 78px 0 auto 0; z-index: 99;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 1.5rem var(--gutter) 2rem;
}
.fi-drawer[hidden] { display: none; }
.fi-drawer__nav { display: flex; flex-direction: column; gap: .25rem; }
.fi-drawer__nav a {
    font-family: var(--display);
    font-size: 1.35rem;
    font-weight: 400;
    text-decoration: none;
    padding: .75rem 0;
    border-bottom: 1px solid var(--line-soft);
}
.fi-drawer__cta { margin-top: 1.25rem; border-bottom: 0; justify-content: center; }
.fi-drawer__nav .fi-drawer__cta { font-family: var(--body); font-size: .9375rem; }

/* ── Ruled list (the check-bullets, redrawn as an engineered list) ─────── */
.fi-ruled { display: grid; gap: 0; }
.fi-ruled li {
    display: grid;
    grid-template-columns: 2.5rem 1fr;
    align-items: baseline;
    gap: .5rem;
    padding: .85rem 0;
    border-top: 1px solid var(--line-soft);
    text-wrap: pretty;
}
.fi-ruled li:last-child { border-bottom: 1px solid var(--line-soft); }
.fi-ruled__n {
    font-size: .75rem;
    font-weight: 500;
    letter-spacing: .06em;
    color: var(--green);
    font-variant-numeric: tabular-nums;
}
.fi-band--ink .fi-ruled li { border-color: var(--line-onink); }
.fi-band--ink .fi-ruled__n { color: #8fd3b4; }

/* ── Cards ─────────────────────────────────────────────────────────────── */
.fi-cards { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.fi-cards--3 { grid-template-columns: repeat(3, 1fr); }
.fi-cards--2 { grid-template-columns: repeat(2, 1fr); }
.fi-card {
    background: var(--paper);
    padding: clamp(1.75rem, 3vw, 2.5rem);
    display: flex; flex-direction: column; gap: .9rem;
    transition: background-color .3s var(--ease);
}
.fi-card:hover { background: #fff; }
.fi-card__n {
    font-size: .75rem; font-weight: 600; letter-spacing: .1em;
    color: var(--green); font-variant-numeric: tabular-nums;
}
.fi-card__icon { width: 34px; height: 34px; color: var(--green); }
.fi-card__icon svg { width: 100%; height: 100%; }
.fi-card p { font-size: .9375rem; color: var(--ink-2); text-wrap: pretty; }

/* On the dark band the cards invert */
.fi-band--ink .fi-cards { background: var(--line-onink); border-color: var(--line-onink); }
.fi-band--ink .fi-card { background: var(--teal); }
.fi-band--ink .fi-card:hover { background: var(--teal-deep); }
.fi-band--ink .fi-card p { color: rgba(255, 255, 255, .78); }
.fi-band--ink .fi-card__icon { color: #8fd3b4; }

/* ── Split (text | figure) ─────────────────────────────────────────────── */
.fi-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 6vw, 5rem);
    align-items: center;
}
.fi-split--wide { grid-template-columns: 1.05fr .95fr; }

/* ── Contact ───────────────────────────────────────────────────────────── */
.fi-form { display: grid; gap: 1.1rem; }
.fi-form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.fi-field { display: grid; gap: .4rem; }
.fi-field label {
    font-size: .75rem; font-weight: 600; letter-spacing: .1em;
    text-transform: uppercase; color: var(--ink-3);
}
.fi-field input, .fi-field textarea {
    font-family: var(--body); font-size: 1rem; color: var(--ink);
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: .8rem .95rem;
    width: 100%;
    transition: border-color .2s var(--ease), background-color .2s var(--ease);
}
.fi-field input:focus, .fi-field textarea:focus {
    border-color: var(--teal); background: #fff; outline: none;
}
.fi-field textarea { resize: vertical; min-height: 8rem; }
.fi-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.fi-form__note { font-size: .8125rem; color: var(--ink-3); }
.fi-form__status { font-size: .9375rem; padding: .8rem 1rem; border-radius: var(--radius); }
.fi-form__status[hidden] { display: none; }
.fi-form__status.is-ok  { background: rgba(64, 141, 104, .1);  color: #24614a; border: 1px solid rgba(64, 141, 104, .3); }
.fi-form__status.is-err { background: rgba(176, 58, 46, .08); color: #8c2f26; border: 1px solid rgba(176, 58, 46, .28); }

/* Contact detail block */
.fi-detail { display: grid; gap: 0; }
.fi-detail__row {
    display: grid; gap: .2rem;
    padding: 1.1rem 0;
    border-top: 1px solid var(--line-soft);
}
.fi-detail__row:last-child { border-bottom: 1px solid var(--line-soft); }
.fi-detail__k {
    font-size: .6875rem; font-weight: 600; letter-spacing: .14em;
    text-transform: uppercase; color: var(--ink-3);
}
.fi-detail__v { font-size: 1.0625rem; text-decoration: none; color: var(--ink); }
.fi-detail__v:hover { color: var(--green-deep); }
.fi-detail address { font-style: normal; display: grid; }

/* ── Footer ────────────────────────────────────────────────────────────── */
.fi-footer { background: var(--teal-deep); color: rgba(255, 255, 255, .78); padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; }
.fi-footer__top {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: clamp(2rem, 5vw, 4rem);
    padding-bottom: 3rem;
}
.fi-footer__logo { width: 200px; }
.fi-footer__blurb { margin-top: 1.25rem; font-size: .9375rem; max-width: 32ch; text-wrap: pretty; }
.fi-footer__h {
    font-size: .6875rem; font-weight: 600; letter-spacing: .16em;
    text-transform: uppercase; color: #8fd3b4; margin-bottom: 1.1rem;
}
.fi-footer__addr { font-style: normal; display: grid; gap: .35rem; font-size: .9375rem; }
.fi-footer__addr a { text-decoration: none; }
.fi-footer__addr a:hover { color: #fff; }
.fi-footer__list { display: grid; gap: .55rem; font-size: .9375rem; }
.fi-footer__list a { text-decoration: none; }
.fi-footer__list a:hover { color: #fff; }

.fi-footer__base {
    display: flex; flex-wrap: wrap; gap: 1rem 2rem;
    align-items: center; justify-content: space-between;
    padding-top: 1.75rem;
    border-top: 1px solid var(--line-onink);
    font-size: .8125rem;
}
.fi-footer__legal { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.fi-footer__legal a { text-decoration: none; }
.fi-footer__legal a:hover { color: #fff; text-decoration: underline; }

/* ── Reveal-on-scroll ──────────────────────────────────────────────────── */
.fi-rise { opacity: 0; transform: translateY(14px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.fi-rise.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .fi-rise { opacity: 1; transform: none; transition: none; }
}