/* ==================================================================
   MATTHIX — "Die lebende Signatur"
   Airy teal-on-paper. The M-squiggle is one living ink stroke:
   it draws on load, a glint travels its route, it leans to the
   cursor, and it signs off into the masthead on scroll.
   Serif display · sans body · tiny mono meta.
================================================================== */

:root {
    --paper: #edf3f2;
    --paper-recessed: #d4e0de;
    --surface-lift: #f6faf9;

    --ink: #22303d;
    --ink-strong: #16232e;
    --muted: #4e5d69;
    --soft: #586a71;   /* AA-safe (~5:1 on paper) for small meta text */

    --teal: #0fa9b5;        /* marks / fills / the living line — NOT text */
    --teal-bright: #17c8d6; /* the travelling glint — decorative only */
    --teal-deep: #0b7f8a;   /* large teal text, marks, button fill (~4.2:1) */
    --teal-ink: #096a72;    /* SAFE teal for small text & links (~5.6:1) */

    --hairline: rgba(34, 48, 61, 0.16);
    --teal-line: rgba(15, 169, 181, 0.34);
    --watermark: rgba(15, 169, 181, 0.08);

    --font-display: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, Cambria, "Times New Roman", serif;
    --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, "Cascadia Code", "SF Mono", "Segoe UI Mono", Consolas, "Liberation Mono", monospace;

    --wrap: 1120px;
    --pad-x: clamp(1.25rem, 5vw, 3rem);
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    --draw: 2.6s;
    --ui: 180ms;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 5.5rem; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    min-height: 100vh;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: 1.0625rem;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; color: var(--ink-strong); }
p { margin: 0; }
img { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }

::selection { background: var(--teal); color: #fff; }

:focus-visible { outline: 2px solid var(--teal-deep); outline-offset: 3px; border-radius: 3px; }
main:focus, main:focus-visible { outline: none; }

.vh {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

.wrap {
    width: min(var(--wrap), 100%);
    margin-inline: auto;
    padding-inline: var(--pad-x);
}

.skip-link {
    position: fixed;
    top: -100px; left: 1rem;
    z-index: 100;
    padding: 0.6rem 1rem;
    background: var(--teal-deep);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    border-radius: 6px;
    transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 0.6rem; }

/* --- masthead ---------------------------------------------------- */

.masthead {
    position: sticky;
    top: 0;
    z-index: 40;
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    -webkit-backdrop-filter: saturate(1.1) blur(6px);
    backdrop-filter: saturate(1.1) blur(6px);
    border-bottom: 1px solid var(--hairline);
}
.masthead-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding-block: 0.8rem;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    font-family: var(--font-body);
    font-weight: 700;
    letter-spacing: 0.14em;
    font-size: 0.92rem;
    color: var(--ink);
}
.brand-mark { width: 1.9rem; height: 1.9rem; flex: 0 0 auto; }
.brand-mark svg { width: 100%; height: 100%; overflow: visible; }
.brand-mark path {
    fill: none;
    stroke: var(--teal-deep);
    stroke-width: 9;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: stroke 0.6s var(--ease);
}
/* When JS is driving motion, the mark starts faint and is "signed" solid on scroll-off. */
.brand-mark.is-pending path { stroke: var(--teal-line); }
.brand-mark.is-parked path { stroke: var(--teal-deep); }

.site-nav { display: flex; gap: 0.2rem; }
.site-nav a {
    position: relative;
    padding: 0.4rem 0.7rem;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--teal-ink);
    transition: color var(--ui) var(--ease);
}
.site-nav a::after {
    content: "";
    position: absolute;
    left: 0.7rem; right: 0.7rem; bottom: 0.15rem;
    height: 2px;
    background: var(--teal-deep);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s var(--ease);
}
.site-nav a:hover { color: var(--ink); }
.site-nav a:hover::after, .site-nav a.is-active::after { transform: scaleX(1); }
.site-nav a.is-active { color: var(--ink); }

.scroll-progress {
    position: absolute;
    left: 0; bottom: -1px;
    height: 2px; width: 100%;
    background: var(--teal);
    transform: scaleX(0);
    transform-origin: left;
}

/* --- sections ---------------------------------------------------- */

main { position: relative; }

.section {
    position: relative;
    padding-block: clamp(4.5rem, 10vw, 8rem);
}
.section-head { max-width: 60ch; margin-bottom: clamp(2.2rem, 5vw, 3.5rem); }

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--teal-ink);
    margin-bottom: 1.1rem;
}
.eyebrow-num { color: var(--soft); margin-right: 0.5rem; }

.section-title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.8rem, 4vw, 2.9rem);
    line-height: 1.1;
    letter-spacing: -0.01em;
}
.section-intro {
    margin-top: 1.1rem;
    max-width: 62ch;
    color: var(--muted);
    font-size: clamp(1.02rem, 1.4vw, 1.12rem);
}

.divider { height: 1px; background: var(--teal-line); border: 0; }

/* --- hero -------------------------------------------------------- */

.hero {
    position: relative;
    overflow: hidden;
    min-height: clamp(560px, 84vh, 840px);
    display: flex;
    align-items: center;
}
.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 47fr) minmax(0, 53fr);
    align-items: center;
    gap: 2rem;
    width: min(var(--wrap), 100%);
}
.hero-copy { position: relative; z-index: 2; }
.hero .kicker,
.kicker {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--teal-ink);
    margin-bottom: 1.2rem;
}
.hero-title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(2.6rem, 7vw, 5.4rem);
    line-height: 1.02;
    letter-spacing: -0.015em;
    color: var(--ink-strong);
}
.hl-line { display: block; }
.hl-line:nth-child(3) { color: var(--teal-deep); } /* one word carries the teal */
.hero-lead {
    margin-top: 1.6rem;
    max-width: 52ch;
    color: var(--muted);
    font-size: clamp(1.05rem, 1.6vw, 1.2rem);
}
.hero-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 0.75rem;
    margin-top: 1.8rem;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--soft);
}
.hero-meta .dot { color: var(--teal-line); }
.avail { display: inline-flex; align-items: center; gap: 0.45rem; color: var(--ink); }
.pip { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--teal-deep); display: inline-block; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2.2rem; }
.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.8rem 1.4rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.98rem;
    border: 1.5px solid transparent;
    transition: background var(--ui) var(--ease), color var(--ui) var(--ease), transform var(--ui) var(--ease);
}
.btn-solid { background: var(--teal-deep); color: #fff; }
.btn-solid:hover { background: var(--teal-ink); transform: translateY(-1px); }
.btn-line { border-color: var(--teal-deep); color: var(--teal-ink); }
.btn-line:hover { background: var(--teal-deep); color: #fff; transform: translateY(-1px); }

/* the living signature */
.hero-mark { position: relative; min-height: 1px; }
.signature {
    position: absolute;
    top: 50%; right: -10%;
    transform: translateY(-50%);
    width: min(48vw, 600px);
    height: auto;
    z-index: 1;
    pointer-events: none;
    overflow: visible;
}
.signature path { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.sig-ghost { stroke: var(--teal-line); stroke-width: 2.4; }
.sig-ink {
    stroke: var(--teal);
    stroke-width: 3.2;
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
    animation: sig-draw var(--draw) 0.25s var(--ease) forwards;
}
@keyframes sig-draw { to { stroke-dashoffset: 0; } }
.sig-glint {
    stroke: var(--teal-bright);
    stroke-width: 3.8;
    stroke-dasharray: 0.14 0.86;
    stroke-dashoffset: 0;
    opacity: 0;
}
.sig-ink-group { transform-box: fill-box; transform-origin: center; will-change: transform; }

.scroll-hint {
    position: absolute;
    left: var(--pad-x); bottom: 1.5rem;
    z-index: 2;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--soft);
}

/* --- Leistung ---------------------------------------------------- */

.svc-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
}
.svc {
    padding: clamp(1.6rem, 3vw, 2.4rem) clamp(1.2rem, 2.5vw, 2rem);
    border-top: 1px solid var(--teal-line);
}
.svc:nth-child(odd) { padding-left: 0; }
.svc:nth-child(even) { border-left: 1px solid var(--teal-line); padding-left: clamp(1.4rem, 3vw, 2.4rem); }
.svc-num {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    color: var(--teal-ink);
}
.svc-title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.3rem, 2vw, 1.6rem);
    margin: 0.6rem 0 0.6rem;
}
.svc-desc { color: var(--muted); font-size: 0.98rem; }

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: clamp(2rem, 4vw, 3rem);
}
.chips li {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    letter-spacing: 0.04em;
    color: var(--ink);
    background: var(--surface-lift);
    padding: 0.5rem 0.85rem;
    border-radius: 6px;
    border-bottom: 2px solid var(--teal-line);
}

/* --- photo plate (teal duotone) ---------------------------------- */

.plate {
    position: relative;
    isolation: isolate;
    height: clamp(300px, 46vw, 520px);
    margin: 0;
    background: var(--paper-recessed);
    overflow: hidden;
}
.plate-img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    z-index: 0;
    filter: grayscale(1) contrast(1.05) brightness(1.02);
}
.plate::before { /* teal duotone wash */
    content: "";
    position: absolute; inset: 0; z-index: 1;
    background: var(--teal-deep);
    mix-blend-mode: multiply;
    opacity: 0.35;
}
.plate::after { /* bottom scrim for the caption */
    content: "";
    position: absolute; inset: 0; z-index: 2;
    background: linear-gradient(180deg, rgba(22,35,46,0) 45%, rgba(22,35,46,0.62) 100%);
}
.plate-caption {
    position: absolute;
    left: 0; right: 0; bottom: 0; z-index: 3;
    width: min(var(--wrap), 100%);
    margin-inline: auto;
    padding: 0 var(--pad-x) clamp(1.4rem, 3vw, 2.2rem);
}
.plate-caption-text {
    display: block;
    max-width: 42ch;
    font-family: var(--font-display);
    font-size: clamp(1.15rem, 2.4vw, 1.7rem);
    line-height: 1.25;
    color: #fff;
    text-shadow: 0 1px 10px rgba(11, 20, 26, 0.5);
}

/* --- Projekte ---------------------------------------------------- */

#projekte { overflow: hidden; }
.watermark {
    position: absolute;
    top: 50%; right: -6%;
    transform: translateY(-50%);
    width: min(70vw, 900px);
    z-index: 0;
    pointer-events: none;
}
.watermark svg { width: 100%; height: auto; }
.watermark path { fill: none; stroke: var(--watermark); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; }
#projekte .wrap { position: relative; z-index: 1; }

.proj-list {
    background: var(--surface-lift);
    border-radius: 8px;
    border: 1px solid var(--hairline);
    overflow: hidden;
}
.proj {
    padding: clamp(1.5rem, 3vw, 2.2rem) clamp(1.4rem, 3vw, 2.2rem);
    border-top: 1px solid var(--teal-line);
}
.proj:first-child { border-top: 0; }
.proj-headline { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.3rem 0.9rem; }
.proj-name { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.35rem, 2.2vw, 1.7rem); }
.proj-tagline { font-family: var(--font-mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--teal-ink); }
.proj-desc { margin-top: 0.7rem; max-width: 64ch; color: var(--muted); }
.proj-foot {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.8rem 1.5rem;
    align-items: center;
    margin-top: 1.1rem;
}
.proj-tags { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.04em; color: var(--soft); }
.proj-links { display: flex; gap: 1.1rem; }
.proj-links a {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--teal-ink);
    padding-bottom: 2px;
}
.proj-links a::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 1.5px;
    background: var(--teal-deep);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s var(--ease);
}
.proj-links a:hover::after { transform: scaleX(1); }
.proj-links svg { width: 0.85rem; height: 0.85rem; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform var(--ui) var(--ease); }
.proj-links a:hover svg { transform: translate(2px, -2px); }

/* --- Referenzen -------------------------------------------------- */

.ref-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: clamp(1.5rem, 3vw, 2.5rem);
}
.ref { padding-top: 1.5rem; border-top: 1px solid var(--teal-line); }
.ref-client { font-family: var(--font-mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--teal-ink); }
.ref-title { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.3rem, 2vw, 1.6rem); margin: 0.6rem 0 0.7rem; }
.ref-desc { color: var(--muted); font-size: 0.98rem; }
.ref-tags { display: block; margin-top: 1rem; font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.04em; color: var(--soft); }

/* --- Kontakt ----------------------------------------------------- */

.contact-line {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.8rem, 5vw, 3.4rem);
    line-height: 1.15;
    color: var(--ink-strong);
    margin-top: clamp(1rem, 3vw, 2rem);
}
.contact-email {
    position: relative;
    color: var(--teal-ink);
    white-space: nowrap;
}
.contact-email::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -0.05em;
    height: 3px;
    background: var(--teal-deep);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease);
}
.contact-email:hover::after, .contact-email:focus-visible::after { transform: scaleX(1); }

/* --- footer ------------------------------------------------------ */

.site-footer { margin-top: clamp(3rem, 6vw, 5rem); }
.footer-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.8rem 1.5rem;
    padding-block: clamp(2rem, 4vw, 3rem);
    font-family: var(--font-mono);
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--soft);
}
.footer-brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--ink); }
.footer-mark { width: 1.5rem; height: 1.5rem; }
.footer-mark svg { width: 100%; height: 100%; overflow: visible; }
.footer-mark path { fill: none; stroke: var(--teal-deep); stroke-width: 10; stroke-linecap: round; stroke-linejoin: round; }
.footer-word { font-family: var(--font-body); font-weight: 700; letter-spacing: 0.14em; }
.footer-mail { margin-left: auto; color: var(--teal-ink); }
.footer-mail:hover { color: var(--ink); }

/* --- responsive -------------------------------------------------- */

@media (max-width: 900px) {
    .hero { min-height: auto; padding-block: 5rem 3.5rem; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-mark { position: absolute; inset: 0; }
    .signature { top: 12%; right: -12%; width: min(90vw, 460px); opacity: 0.2; transform: none; }
    .scroll-hint { display: none; }
    .svc-grid { grid-template-columns: 1fr; }
    .svc:nth-child(even) { border-left: 0; padding-left: 0; }
    .ref-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
    .site-nav { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
    .sig-ink { stroke-dashoffset: 0; }
    .sig-glint { display: none; }
    .sig-ink-group { transform: none !important; }
}