/* =========================================================
   philbor ip check – Stylesheet
   CI: philbor solutions (streng schwarz/weiß, minimalistisch)
   ========================================================= */

:root {
    --black: #0a0a0a;
    --white: #ffffff;
    --ink-70: #3d3d3d;
    --ink-50: #6b6b6b;
    --ink-30: #a3a3a3;
    --line: #e6e6e6;
    --line-strong: #0a0a0a;
    --paper: #fafafa;
    --bad: #0a0a0a;      /* im S/W-CI werden Negativ-Flags über Muster/Rahmen unterschieden */

    --maxw: 1200px;
    --gutter: clamp(20px, 5vw, 48px);

    --font-sans: "Helvetica Neue", Helvetica, Arial, "Segoe UI", Roboto, sans-serif;
    --font-mono: "SFMono-Regular", "JetBrains Mono", "Consolas", "Liberation Mono", Menlo, monospace;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: var(--font-sans);
    color: var(--black);
    background: var(--white);
    line-height: 1.5;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
h1, h2, h3, p, dl, dd { margin: 0; }

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

/* ---------- Header ---------- */
.site-header {
    border-bottom: 1px solid var(--line-strong);
    position: sticky;
    top: 0;
    background: var(--white);
    z-index: 50;
}
.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
    gap: 24px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
}
.brand__logo { height: 22px; width: auto; }
.brand__divider {
    width: 1px;
    height: 24px;
    background: var(--line);
}
.brand__product {
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-size: 0.82rem;
}
.nav {
    display: flex;
    align-items: center;
    gap: clamp(16px, 3vw, 40px);
}
.nav__link {
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-50);
    padding: 6px 0;
    border-bottom: 2px solid transparent;
    transition: color .15s ease, border-color .15s ease;
    white-space: nowrap;
}
.nav__link:hover { color: var(--black); }
.nav__link.is-active {
    color: var(--black);
    border-bottom-color: var(--black);
}
@media (max-width: 640px) {
    .site-header__inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding-block: 16px;
        min-height: 0;
    }
    .nav { gap: 20px; }
    .brand__product { font-size: 0.74rem; }
}

/* ---------- Hero ---------- */
.hero {
    padding: clamp(56px, 9vw, 120px) 0 clamp(40px, 6vw, 72px);
    border-bottom: 1px solid var(--line);
}
.hero--compact { padding-block: clamp(48px, 7vw, 88px) clamp(28px, 4vw, 48px); }
.hero__eyebrow {
    font-size: 0.72rem;
    letter-spacing: 0.34em;
    text-transform: uppercase;
    color: var(--ink-50);
    margin-bottom: 20px;
}
.hero__title {
    font-size: clamp(2.6rem, 8vw, 6rem);
    line-height: 0.98;
    font-weight: 800;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    margin-bottom: 24px;
}
.hero__lead {
    max-width: 62ch;
    font-size: clamp(1rem, 1.6vw, 1.18rem);
    color: var(--ink-70);
    line-height: 1.6;
}

/* ---------- Sections ---------- */
.section { padding-block: clamp(40px, 6vw, 72px); }
.section--alt {
    background: var(--paper);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.section__head { margin-bottom: 36px; }
.section__heading {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 800;
    letter-spacing: -0.01em;
    text-transform: uppercase;
}
.section__sub {
    color: var(--ink-50);
    margin-top: 10px;
    max-width: 60ch;
}

/* ---------- Grid ---------- */
.grid { display: grid; gap: clamp(20px, 3vw, 32px); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 820px) {
    .grid--2 { grid-template-columns: 1fr; }
}

/* ---------- Cards ---------- */
.card {
    border: 1px solid var(--line-strong);
    background: var(--white);
    padding: clamp(22px, 3vw, 32px);
}
.card__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 22px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--line);
}
.card__title {
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

/* ---------- IP display (the signature element) ---------- */
.ip-display {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 26px;
}
.ip-display__value {
    font-family: var(--font-mono);
    font-size: clamp(1.5rem, 4vw, 2.4rem);
    font-weight: 600;
    letter-spacing: -0.01em;
    word-break: break-all;
    line-height: 1.1;
}

/* ---------- Data list ---------- */
.datalist { display: block; }
.datalist__row {
    display: grid;
    grid-template-columns: 40% 1fr;
    gap: 16px;
    padding: 11px 0;
    border-bottom: 1px solid var(--line);
    align-items: start;
}
.datalist__row:last-child { border-bottom: 0; }
.datalist dt {
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-50);
    font-weight: 600;
    padding-top: 1px;
}
.datalist dd {
    font-size: 0.98rem;
    color: var(--black);
    word-break: break-word;
}
.datalist dd.ua,
.datalist dd .muted { color: var(--ink-50); }
.datalist dd.ua {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.5;
}

/* ---------- Tags & flags ---------- */
.tag {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 4px 9px;
    border: 1px solid var(--black);
    background: var(--black);
    color: var(--white);
}
.tag--muted {
    background: transparent;
    color: var(--black);
}
.flags { display: flex; flex-wrap: wrap; gap: 8px; }
.flag {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 5px 10px;
    border: 1px solid var(--line-strong);
    white-space: nowrap;
}
.flag--good {
    background: var(--white);
    color: var(--black);
}
/* Negativ/Warnung im S/W-CI: invertiert (schwarz gefüllt) statt Farbe */
.flag--bad {
    background: var(--black);
    color: var(--white);
}

/* ---------- Links ---------- */
.link {
    color: var(--black);
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
}
.link:hover { text-decoration: none; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 14px 26px;
    border: 1px solid var(--black);
    background: var(--white);
    color: var(--black);
    text-decoration: none;
    cursor: pointer;
    transition: background .15s ease, color .15s ease;
}
.btn:hover { background: var(--black); color: var(--white); }
.btn--solid { background: var(--black); color: var(--white); }
.btn--solid:hover { background: var(--white); color: var(--black); }
.btn-icon {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    width: 42px;
    height: 42px;
    border: 1px solid var(--black);
    background: var(--white);
    color: var(--black);
    cursor: pointer;
    flex: 0 0 auto;
    transition: background .15s ease, color .15s ease;
}
.btn-icon:hover { background: var(--black); color: var(--white); }
.btn-icon.is-copied { background: var(--black); color: var(--white); }

/* ---------- Search ---------- */
.search { max-width: 780px; }
.search__label {
    display: block;
    font-size: 0.76rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-50);
    font-weight: 600;
    margin-bottom: 12px;
}
.search__row { display: flex; gap: 0; }
.search__input {
    flex: 1 1 auto;
    font-family: var(--font-mono);
    font-size: 1.05rem;
    padding: 15px 18px;
    border: 1px solid var(--black);
    border-right: 0;
    background: var(--white);
    color: var(--black);
    min-width: 0;
}
.search__input:focus {
    outline: 2px solid var(--black);
    outline-offset: -2px;
}
.search__row .btn { border-left: 0; }
.search__error {
    margin-top: 14px;
    font-size: 0.9rem;
    color: var(--black);
    border-left: 3px solid var(--black);
    padding-left: 12px;
}
@media (max-width: 560px) {
    .search__row { flex-direction: column; gap: 12px; }
    .search__input { border-right: 1px solid var(--black); }
    .search__row .btn { border-left: 1px solid var(--black); }
}

/* ---------- Result heading ---------- */
.result-heading {
    padding-block: 26px;
    border-bottom: 1px solid var(--line);
}
.result-heading .container {
    display: flex;
    align-items: baseline;
    gap: 14px;
    flex-wrap: wrap;
}
.result-heading__label {
    font-size: 0.74rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-50);
    font-weight: 600;
}
.result-heading__query {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    font-weight: 600;
    word-break: break-all;
}

/* ---------- Notices / empty ---------- */
.notice {
    border: 1px solid var(--black);
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-width: var(--maxw);
    margin: clamp(40px, 6vw, 64px) auto;
    margin-inline: var(--gutter);
}
@media (min-width: 1296px) {
    .notice { margin-inline: auto; }
}
.notice--error strong { text-transform: uppercase; letter-spacing: 0.04em; }
.notice--error span { color: var(--ink-70); }
.empty {
    border: 1px dashed var(--ink-30);
    padding: 48px 24px;
    text-align: center;
    color: var(--ink-50);
}

/* ---------- CTA ---------- */
.cta {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}
.cta p { color: var(--ink-70); }

/* ---------- Footer ---------- */
.site-footer {
    border-top: 1px solid var(--line-strong);
    margin-top: clamp(48px, 8vw, 96px);
}
.site-footer__inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    padding-block: clamp(40px, 6vw, 64px);
}
@media (max-width: 640px) {
    .site-footer__inner { grid-template-columns: 1fr; gap: 28px; }
}
.site-footer__col { display: flex; flex-direction: column; gap: 8px; }
.site-footer__col a { color: var(--ink-70); text-decoration: none; }
.site-footer__col a:hover { color: var(--black); }
.site-footer__label {
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 6px;
}
.site-footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    padding-block: 22px;
    border-top: 1px solid var(--line);
    font-size: 0.8rem;
    color: var(--ink-50);
}

/* ---------- Utilities ---------- */
.muted { color: var(--ink-50); }

/* ---------- Accessibility ---------- */
:focus-visible {
    outline: 2px solid var(--black);
    outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; }
}