:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --ink: #1a2238;
    --ink-soft: #5a6785;
    --brand: #2563eb;
    --brand-dark: #1e40af;
    --accent: #06b6d4;
    --line: #e6eaf2;
    --ok: #16a34a;
    --err: #dc2626;
    --shadow: 0 10px 30px rgba(26, 34, 56, .08);
    --radius: 16px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    line-height: 1.5;
}

code { font-family: "Cascadia Code", Consolas, monospace; }

/* ---------- Barre supérieure ---------- */
.topbar {
    background: linear-gradient(90deg, #0f172a 0%, #1e3a8a 100%);
    color: #fff;
}
.topbar-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: .9rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

/* ---------- Sélecteur de langue ---------- */
.lang-switch {
    display: inline-flex;
    align-items: center;
    gap: .1rem;
    font-size: .9rem;
    font-weight: 600;
}
.lang-switch a {
    color: rgba(255, 255, 255, .6);
    text-decoration: none;
    padding: .25rem .5rem;
    border-radius: 6px;
    transition: color .15s, background .15s;
}
.lang-switch a:hover { color: #fff; }
.lang-switch a.active {
    color: #fff;
    background: rgba(255, 255, 255, .15);
}
.lang-sep { color: rgba(255, 255, 255, .35); }
.brand {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    text-decoration: none;
    color: #fff;
}
.brand-logo {
    width: 42px; height: 42px;
    border-radius: 50%;
    background: #fff;
    padding: 2px;
    object-fit: contain;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .25);
}
.brand-text { font-weight: 700; letter-spacing: .02em; font-size: 1.1rem; }
.brand-text small { opacity: .65; font-weight: 500; margin-left: .35rem; font-size: .8rem; }

/* ---------- Contenu ---------- */
main {
    flex: 1 0 auto;
    max-width: 960px;
    width: 100%;
    margin: 0 auto;
    padding: 0 1.25rem 3rem;
}

/* ---------- Hero + recherche ---------- */
.hero {
    text-align: center;
    padding: 3rem 1rem 2.25rem;
}
.hero-title {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 800;
    margin: 0 0 .6rem;
    letter-spacing: -.02em;
}
.hero-title .tld { color: var(--brand); }
.hero-sub {
    color: var(--ink-soft);
    margin: 0 auto 2rem;
    max-width: 520px;
    font-size: 1.05rem;
}

.search { max-width: 640px; margin: 0 auto; }

.search-box {
    display: flex;
    align-items: center;
    gap: .5rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: .5rem .5rem .5rem 1.1rem;
    box-shadow: var(--shadow);
    transition: box-shadow .2s, border-color .2s;
}
.search-box:focus-within {
    border-color: var(--brand);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .15), var(--shadow);
}
.search-icon {
    width: 22px; height: 22px;
    flex: 0 0 auto;
    fill: none;
    stroke: var(--ink-soft);
    stroke-width: 2;
    stroke-linecap: round;
}
.search-input {
    flex: 1 1 auto;
    border: none;
    outline: none;
    background: transparent;
    font-size: 1.15rem;
    padding: .85rem .4rem;
    color: var(--ink);
    min-width: 0;
}
.search-input::placeholder { color: #9aa6bf; }
.search-btn {
    flex: 0 0 auto;
    border: none;
    cursor: pointer;
    background: linear-gradient(90deg, var(--brand) 0%, var(--brand-dark) 100%);
    color: #fff;
    font-size: 1.05rem;
    font-weight: 600;
    padding: .85rem 1.6rem;
    border-radius: 999px;
    transition: transform .1s, filter .2s;
}
.search-btn:hover { filter: brightness(1.08); }
.search-btn:active { transform: scale(.98); }

.field-error {
    color: var(--err);
    margin-top: .9rem;
    font-size: .95rem;
    font-weight: 500;
}

/* ---------- Alertes ---------- */
.alert {
    max-width: 720px;
    margin: 1.5rem auto 0;
    padding: 1rem 1.2rem;
    border-radius: 12px;
    font-size: 1rem;
    border: 1px solid transparent;
}
.alert-error   { background: #fef2f2; color: #991b1b; border-color: #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border-color: #bbf7d0; }

/* ---------- Résultat WHOIS ---------- */
.result-card {
    max-width: 820px;
    margin: 1.75rem auto 0;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--line);
}
.result-head {
    display: flex;
    align-items: center;
    gap: .45rem;
    background: #0f172a;
    padding: .7rem 1rem;
}
.result-head .dot {
    width: 11px; height: 11px; border-radius: 50%;
    background: #3b4a63;
}
.result-head .dot:nth-child(1) { background: #ff5f57; }
.result-head .dot:nth-child(2) { background: #febc2e; }
.result-head .dot:nth-child(3) { background: #28c840; }
.result-label {
    margin-left: .6rem;
    color: #9fb0cc;
    font-family: "Cascadia Code", Consolas, monospace;
    font-size: .85rem;
}
.whois-result {
    margin: 0;
    padding: 1.25rem 1.4rem;
    background: #0b1120;
    color: #d7e3ff;
    overflow-x: auto;
    font-family: "Cascadia Code", Consolas, monospace;
    font-size: .86rem;
    line-height: 1.55;
    white-space: pre;
}

/* ---------- Documentation ---------- */
.doc {
    display: grid;
    gap: 1.25rem;
    margin-top: 2.5rem;
}
@media (min-width: 760px) {
    .doc { grid-template-columns: 1fr 1fr; }
}
.doc-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.5rem 1.6rem;
    box-shadow: 0 4px 16px rgba(26, 34, 56, .05);
}
.doc-card h2 {
    font-size: 1.15rem;
    margin: 0 0 .8rem;
    color: var(--brand-dark);
}
.doc-card p, .doc-card li { color: var(--ink-soft); line-height: 1.65; }
.doc-card ul, .doc-card ol { padding-left: 1.2rem; }
.doc-card li { margin-bottom: .35rem; }

/* ---------- Pied de page ---------- */
.footer {
    flex-shrink: 0;
    border-top: 1px solid var(--line);
    background: #fff;
}
.footer-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.25rem;
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    justify-content: space-between;
    color: var(--ink-soft);
    font-size: .9rem;
}
.footer-org { opacity: .8; }