/* =============================================================
   Hn Checker - Feuille de style principale
   Design sobre, lisible, inspiré du style éditorial suisse
   Palette : noir profond / blanc cassé / accent rouge signature
   ============================================================= */

/* --- Variables globales --- */
:root {
    --color-bg:        #f6f5f1;
    --color-surface:   #ffffff;
    --color-ink:       #0a0a0a;
    --color-ink-soft:  #4a4a4a;
    --color-muted:     #8a8a8a;
    --color-line:      #e4e2dc;
    --color-accent:    #d92b1c;
    --color-accent-dk: #b32215;
    --color-success:   #0f7b3c;
    --color-warning:   #b8770a;
    --color-error:     #c8321e;

    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", ui-monospace, "Menlo", "Consolas", monospace;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 14px;

    --shadow-sm: 0 1px 2px rgba(10,10,10,0.04);
    --shadow-md: 0 6px 20px rgba(10,10,10,0.06);
    --shadow-lg: 0 24px 60px rgba(10,10,10,0.10);

    --transition: 180ms cubic-bezier(.4,.0,.2,1);

    --container-max: 1080px;
    --gutter: clamp(20px, 4vw, 40px);

    /* Couleurs par niveau de titre */
    --h1-color: #d92b1c;
    --h2-color: #1a4fb8;
    --h3-color: #0f7b3c;
    --h4-color: #b8770a;
    --h5-color: #6b3fa0;
    --h6-color: #4a4a4a;
}

/* --- Reset léger --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-ink);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

img, svg { max-width: 100%; display: block; }

button {
    font: inherit;
    color: inherit;
    background: none;
    border: none;
    cursor: pointer;
}

a { color: var(--color-ink); text-decoration: none; }
a:hover { color: var(--color-accent); }

/* --- Conteneur --- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
}

/* =============================================================
   BARRE DE NAVIGATION
   ============================================================= */
.topbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: saturate(180%) blur(8px);
}

.topbar__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.topbar__brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 15px;
    letter-spacing: -0.01em;
}

.topbar__brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background: var(--color-ink);
    color: #fff;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 15px;
}

.topbar__brand-text {
    font-size: 14px;
}

.topbar__nav {
    display: flex;
    gap: 22px;
}

.topbar__link {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink-soft);
    transition: color var(--transition);
}

.topbar__link:hover { color: var(--color-ink); }

@media (max-width: 520px) {
    .topbar__brand-text { display: none; }
    .topbar__nav { gap: 14px; }
}

/* =============================================================
   HÉRO
   ============================================================= */
.main { flex: 1; }

.hero {
    padding: clamp(48px, 8vw, 96px) 0 clamp(32px, 6vw, 56px);
    background:
        radial-gradient(ellipse at top right, rgba(217,43,28,0.05), transparent 60%),
        var(--color-bg);
}

.hero__eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent);
    padding: 6px 12px;
    border: 1px solid var(--color-accent);
    border-radius: 100px;
    margin-bottom: 24px;
}

.hero__title {
    font-size: clamp(40px, 7vw, 68px);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.05;
    margin-bottom: 24px;
    color: var(--color-ink);
}

.hero__lead {
    font-size: clamp(16px, 1.8vw, 18px);
    color: var(--color-ink-soft);
    max-width: 720px;
    margin-bottom: 40px;
    line-height: 1.65;
}

/* =============================================================
   FORMULAIRE
   ============================================================= */
.form {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
    max-width: 780px;
}

.form__label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 10px;
    letter-spacing: 0.01em;
}

.form__row {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.form__input {
    flex: 1;
    min-width: 0;
    border: 1.5px solid var(--color-line);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    font-size: 15px;
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-ink);
    transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.form__input:focus {
    outline: none;
    background: #fff;
    border-color: var(--color-ink);
    box-shadow: 0 0 0 4px rgba(10,10,10,0.06);
}

.form__input::placeholder { color: var(--color-muted); }

.form__button {
    position: relative;
    background: var(--color-ink);
    color: #fff;
    padding: 14px 26px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0.01em;
    transition: background var(--transition), transform var(--transition);
    min-width: 130px;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.form__button:hover:not(:disabled) {
    background: var(--color-accent);
}

.form__button:active { transform: translateY(1px); }

.form__button:disabled {
    cursor: not-allowed;
    opacity: 0.75;
}

.form__button-spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.35);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 700ms linear infinite;
}

.form__button.is-loading .form__button-spinner { display: inline-block; }
.form__button.is-loading .form__button-label { opacity: 0.7; }

@keyframes spin {
    to { transform: rotate(360deg); }
}

.form__help {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: 12px;
}

.form__error {
    margin-top: 12px;
    font-size: 14px;
    color: var(--color-error);
    background: rgba(200,50,30,0.08);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-error);
}

@media (max-width: 620px) {
    .form__row { flex-direction: column; }
    .form__button { width: 100%; }
}

/* =============================================================
   ÉTAT VIDE
   ============================================================= */
.empty {
    padding: clamp(40px, 8vw, 80px) 0;
    border-top: 1px solid var(--color-line);
    background: var(--color-surface);
}

.empty__title {
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 32px;
}

.empty__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.empty__card {
    padding: 24px;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.empty__card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-ink);
}

.empty__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-ink);
    color: #fff;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 14px;
}

.empty__card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.empty__card p {
    font-size: 14px;
    color: var(--color-ink-soft);
    line-height: 1.5;
}

/* =============================================================
   RÉSULTATS
   ============================================================= */
.results {
    padding: clamp(32px, 6vw, 64px) 0;
    animation: fadeIn 400ms ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Cartes de synthèse --- */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    padding: 18px 16px;
    text-align: center;
    transition: transform var(--transition);
}

.stat-card:hover { transform: translateY(-2px); }

.stat-card__value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.02em;
}

.stat-card__label {
    display: block;
    margin-top: 8px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.stat-card--h1 .stat-card__value { color: var(--h1-color); }
.stat-card--h2 .stat-card__value { color: var(--h2-color); }
.stat-card--h3 .stat-card__value { color: var(--h3-color); }
.stat-card--h4 .stat-card__value { color: var(--h4-color); }
.stat-card--h5 .stat-card__value { color: var(--h5-color); }
.stat-card--h6 .stat-card__value { color: var(--h6-color); }

/* --- Alertes --- */
.alerts { margin-bottom: 24px; display: flex; flex-direction: column; gap: 10px; }

.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: 14px;
    line-height: 1.5;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    border-left: 4px solid;
    background: var(--color-surface);
}

.alert__mark {
    font-weight: 700;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    flex-shrink: 0;
}

.alert--error {
    border-color: var(--color-error);
    background: rgba(200,50,30,0.06);
}

.alert--error .alert__mark { color: var(--color-error); }

.alert--warning {
    border-color: var(--color-warning);
    background: rgba(184,119,10,0.06);
}

.alert--warning .alert__mark { color: var(--color-warning); }

.alert--success {
    border-color: var(--color-success);
    background: rgba(15,123,60,0.06);
}

.alert--success .alert__mark { color: var(--color-success); }

/* --- Onglets --- */
.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--color-line);
    margin-bottom: 24px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab {
    padding: 12px 18px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    border-bottom: 2px solid transparent;
    transition: color var(--transition), border-color var(--transition);
    white-space: nowrap;
}

.tab:hover { color: var(--color-ink); }

.tab.is-active {
    color: var(--color-ink);
    border-bottom-color: var(--color-ink);
    font-weight: 600;
}

.panel:not(.is-active) { display: none; }

/* --- Arborescence --- */
.tree {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    padding: 24px;
}

.tree__node {
    position: relative;
    padding-left: 28px;
    margin-top: 8px;
}

.tree__node:first-child { margin-top: 0; }

.tree__node::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--color-line);
}

.tree__node:last-child::before {
    bottom: calc(100% - 22px);
}

.tree__node::after {
    content: '';
    position: absolute;
    left: 8px;
    top: 22px;
    width: 14px;
    height: 1px;
    background: var(--color-line);
}

.tree__root { padding-left: 0; }
.tree__root::before,
.tree__root::after { display: none; }

.tree__item {
    display: flex;
    gap: 12px;
    align-items: baseline;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
    cursor: default;
    line-height: 1.5;
}

.tree__item:hover { background: var(--color-bg); }

.tree__tag {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 3px 8px;
    border-radius: 4px;
    color: #fff;
    flex-shrink: 0;
    min-width: 30px;
    text-align: center;
}

.tree__tag--h1 { background: var(--h1-color); }
.tree__tag--h2 { background: var(--h2-color); }
.tree__tag--h3 { background: var(--h3-color); }
.tree__tag--h4 { background: var(--h4-color); }
.tree__tag--h5 { background: var(--h5-color); }
.tree__tag--h6 { background: var(--h6-color); }

.tree__text {
    color: var(--color-ink);
    font-size: 15px;
    word-break: break-word;
}

.tree__text--empty {
    color: var(--color-muted);
    font-style: italic;
}

.tree__pos {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-muted);
    flex-shrink: 0;
    margin-left: auto;
    padding-left: 12px;
}

/* --- Vue liste --- */
.list-view {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.list-item {
    display: grid;
    grid-template-columns: auto auto 1fr auto;
    gap: 14px;
    padding: 14px 20px;
    align-items: center;
    border-top: 1px solid var(--color-line);
    transition: background var(--transition);
}

.list-item:first-child { border-top: none; }
.list-item:hover { background: var(--color-bg); }

.list-item__pos {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--color-muted);
    min-width: 28px;
}

.list-item__parent {
    font-size: 12px;
    color: var(--color-muted);
    font-family: var(--font-mono);
    text-align: right;
}

.list-item__parent strong { color: var(--color-ink-soft); }

@media (max-width: 700px) {
    .list-item {
        grid-template-columns: auto auto 1fr;
        grid-template-areas:
            "pos tag text"
            ".   .   parent";
    }
    .list-item__pos    { grid-area: pos; }
    .list-item__tag    { grid-area: tag; }
    .list-item__text   { grid-area: text; }
    .list-item__parent { grid-area: parent; text-align: left; margin-top: 4px; }
}

/* --- Vue brute (JSON) --- */
.raw {
    background: var(--color-ink);
    color: #f0efe9;
    padding: 22px;
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre;
    max-height: 600px;
    overflow-y: auto;
}

/* =============================================================
   PIED DE PAGE
   ============================================================= */
.footer {
    border-top: 1px solid var(--color-line);
    padding: 28px 0;
    background: var(--color-surface);
    margin-top: auto;
}

.footer__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.footer__text {
    font-size: 13px;
    color: var(--color-muted);
}

.footer__nav {
    display: flex;
    gap: 20px;
}

.footer__link {
    font-size: 13px;
    color: var(--color-ink-soft);
    font-weight: 500;
    transition: color var(--transition);
}

.footer__link:hover { color: var(--color-accent); }

/* =============================================================
   PRÉFÉRENCES UTILISATEUR
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}

@media print {
    .topbar, .footer, .form, .tabs, .empty { display: none; }
    body { background: #fff; }
}


/* =============================================================
   BARRE DE NAVIGATION SUP\u00c9RIEURE (page-nav)
   Harmonis\u00e9e avec /outils/ ; d\u00e9grad\u00e9 bleu align\u00e9 sur --h2-color (#1a4fb8)
   ============================================================= */
.page-nav{background:linear-gradient(135deg,#0d2e6e 0%,#1a4fb8 60%,#2f6bd8 100%);padding:16px 24px;}
.page-nav-inner{max-width:var(--container-max);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.page-nav a{display:inline-flex;align-items:center;gap:8px;color:#fff;text-decoration:none;font-size:.88rem;font-weight:600;opacity:.9;transition:opacity .15s ease;}
.page-nav a:hover{opacity:1;text-decoration:underline;color:#fff;}
@media (max-width:600px){.page-nav{padding:12px 16px;}.page-nav-inner{gap:10px;}}