/* ==========================================================================
   ClimaScore composants industrialisés (cs-*)
   --------------------------------------------------------------------------
   Composants partagés entre toutes les pages. Référencent _tokens.css.
   Préfixe `cs-` pour éviter les collisions avec l'ancien design system (.btn,
   .card, etc.) qui reste utilisé par certaines pages legacy.
   ========================================================================== */

/* --- 1. Boutons --------------------------------------------------------- */

.cs-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.9375rem;
    line-height: 1;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius);
    border: 1px solid transparent;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
    white-space: nowrap;
    user-select: none;
}

.cs-btn:hover { transform: translateY(-1px); }
.cs-btn:active { transform: translateY(0) scale(0.98); }
.cs-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.cs-btn:focus-visible {
    outline: 2px solid var(--ed-forest);
    outline-offset: 2px;
}

.cs-btn--primary {
    background: var(--ed-forest);
    color: #fff;
    border-color: var(--ed-forest);
}
.cs-btn--primary:hover {
    background: var(--ed-forest-deep);
    border-color: var(--ed-forest-deep);
    box-shadow: var(--shadow-md);
}

.cs-btn--ghost {
    background: transparent;
    color: var(--ed-graphite);
    border-color: var(--ed-line-strong);
}
.cs-btn--ghost:hover {
    background: var(--ed-paper-2);
    border-color: var(--ed-graphite);
}

.cs-btn--accent {
    background: var(--ed-saffron);
    color: #fff;
    border-color: var(--ed-saffron);
}
.cs-btn--accent:hover {
    background: #7e4d18;
    border-color: #7e4d18;
}

.cs-btn--link {
    background: transparent;
    color: var(--ed-forest);
    padding: 0;
    border: 0;
    border-radius: 0;
    border-bottom: 1px solid currentColor;
    border-radius: 0;
}
.cs-btn--link:hover {
    color: var(--ed-forest-deep);
}

.cs-btn--sm { padding: 0.5rem 0.875rem; font-size: 0.8125rem; }
.cs-btn--lg { padding: 1rem 1.75rem; font-size: 1.0625rem; }
.cs-btn--block { width: 100%; }

/* --- 2. Cards ----------------------------------------------------------- */

.cs-card {
    background: var(--ed-paper);
    border: 1px solid var(--ed-line);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
}

.cs-card--paper {
    background: var(--ed-paper-2);
}

.cs-card--elevated {
    background: #fff;
    box-shadow: var(--shadow);
    border-color: transparent;
}

.cs-card--accent-top {
    border-top: 3px solid var(--ed-forest);
    border-radius: var(--radius);
}

.cs-card--accent-saffron { border-top-color: var(--ed-saffron); }
.cs-card--accent-terracotta { border-top-color: var(--ed-terracotta); }

/* --- 3. Pills (trust/tag/classe) --------------------------------------- */

.cs-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--ed-ink);
    background: var(--ed-paper-2);
    border: 1px solid var(--ed-line);
    line-height: 1.2;
    white-space: nowrap;
}

.cs-pill--forest { background: var(--ed-forest-soft); border-color: transparent; color: var(--ed-forest-deep); }
.cs-pill--saffron { background: var(--ed-saffron-soft); border-color: transparent; color: var(--ed-saffron); }
.cs-pill--terracotta { background: var(--ed-terracotta-soft); border-color: transparent; color: var(--ed-terracotta); }
.cs-pill--ghost { background: transparent; }

/* --- 4. Badges (eyebrow ribbon, classe lettre) ------------------------- */

.cs-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    background: var(--ed-paper-2);
    color: var(--ed-ink-deep);
    border-radius: var(--radius-sm);
    padding: 0.125rem 0.5rem;
    font-size: var(--text-small);
}

.cs-class-letter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.875rem;
    color: #fff;
    background: var(--ed-graphite);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.1), 0 1px 0 var(--ed-line-strong);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.04em;
}
.cs-class-letter--a { background: var(--dpe-a); }
.cs-class-letter--b { background: var(--dpe-b); }
.cs-class-letter--c { background: var(--dpe-c); color: var(--ed-graphite); }
.cs-class-letter--d { background: var(--dpe-d); color: var(--ed-graphite); }
.cs-class-letter--e { background: var(--dpe-e); }
.cs-class-letter--f { background: var(--dpe-f); }
.cs-class-letter--g { background: var(--dpe-g); }

/* --- 5. Stat (label + valeur héros) ------------------------------------ */

.cs-stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-variant-numeric: tabular-nums;
}

.cs-stat__label {
    font-size: var(--text-eyebrow);
    font-weight: 600;
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--ed-mute);
}

.cs-stat__value {
    font-family: var(--font-display);
    font-size: var(--text-data-l);
    font-weight: 700;
    color: var(--ed-ink-deep);
    line-height: 1;
    letter-spacing: var(--tracking-tight);
}

.cs-stat__value--xl { font-size: var(--text-data-xl); }
.cs-stat__value--m  { font-size: var(--text-data-m); }

.cs-stat__hint {
    font-size: var(--text-small);
    color: var(--ed-mute);
}

.cs-stat__delta {
    font-size: var(--text-small);
    font-weight: 600;
}
.cs-stat__delta--up   { color: var(--ed-forest); }
.cs-stat__delta--down { color: var(--ed-terracotta); }

/* --- 6. Alert row (border-left) ---------------------------------------- */

.cs-alert {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: var(--ed-paper-2);
    border-left: 3px solid var(--ed-mute);
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: var(--text-body);
    line-height: var(--leading-normal);
}

.cs-alert--info { border-left-color: var(--ed-slate); }
.cs-alert--saffron { border-left-color: var(--ed-saffron); background: var(--ed-saffron-soft); }
.cs-alert--terracotta { border-left-color: var(--ed-terracotta); background: var(--ed-terracotta-soft); }
.cs-alert--forest { border-left-color: var(--ed-forest); background: var(--ed-forest-soft); }

.cs-alert strong {
    color: var(--ed-graphite);
    font-weight: 600;
}

/* --- 7. Sticky CTA bar ------------------------------------------------- */

.cs-stickybar {
    position: sticky;
    bottom: var(--space-4);
    z-index: 50;
    margin: var(--space-8) auto 0;
    max-width: 760px;
    background: var(--ed-graphite);
    color: var(--ed-paper);
    border-radius: var(--radius-lg);
    padding: var(--space-4) var(--space-5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    box-shadow: var(--shadow-lg);
}
.cs-stickybar__label { font-weight: 600; font-size: 0.9375rem; }
.cs-stickybar__hint { font-size: var(--text-small); color: rgba(250, 247, 241, 0.65); }

@media (max-width: 640px) {
    .cs-stickybar { flex-direction: column; align-items: stretch; text-align: center; }
}

/* --- 8. Breadcrumb ------------------------------------------------------ */

.cs-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-small);
    color: var(--ed-mute);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}
.cs-breadcrumb a {
    color: var(--ed-mute);
    text-decoration: none;
    border-bottom: 1px solid transparent;
}
.cs-breadcrumb a:hover { color: var(--ed-graphite); border-bottom-color: var(--ed-mute); }
.cs-breadcrumb__sep::before {
    content: "›";
    color: var(--ed-mute-2);
}
.cs-breadcrumb__current {
    color: var(--ed-graphite);
    font-weight: 500;
}

/* --- 9. FAQ accordion (details/summary) -------------------------------- */

.cs-faq {
    border-top: 1px solid var(--ed-line);
}
.cs-faq__item {
    border-bottom: 1px solid var(--ed-line);
}
.cs-faq__item summary {
    list-style: none;
    cursor: pointer;
    padding: var(--space-5) 0;
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--ed-graphite);
    font-size: 1.0625rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}
.cs-faq__item summary::-webkit-details-marker { display: none; }
.cs-faq__item summary::after {
    content: "+";
    font-size: 1.5rem;
    color: var(--ed-mute);
    flex-shrink: 0;
    transition: transform 0.2s ease;
}
.cs-faq__item[open] summary::after {
    content: "−";
    color: var(--ed-forest);
}
.cs-faq__answer {
    padding-bottom: var(--space-5);
    color: var(--ed-ink);
    line-height: var(--leading-relaxed);
    max-width: 64ch;
}

/* --- 10. Source citation ----------------------------------------------- */

.cs-source {
    font-size: var(--text-small);
    color: var(--ed-mute);
    border-left: 1px solid var(--ed-line-strong);
    padding-left: var(--space-3);
    margin-top: var(--space-3);
    line-height: var(--leading-normal);
}
.cs-source strong { color: var(--ed-graphite); font-weight: 600; }

/* --- 11. Meter A-F (jauge segmentée) ----------------------------------- */

.cs-meter {
    display: flex;
    gap: 2px;
    margin: var(--space-3) 0;
}
.cs-meter__seg {
    flex: 1;
    height: 8px;
    background: var(--ed-line);
    border-radius: 2px;
    transition: background 0.3s;
}
.cs-meter__seg--a { background: var(--dpe-a); }
.cs-meter__seg--b { background: var(--dpe-b); }
.cs-meter__seg--c { background: var(--dpe-c); }
.cs-meter__seg--d { background: var(--dpe-d); }
.cs-meter__seg--e { background: var(--dpe-e); }
.cs-meter__seg--f { background: var(--dpe-f); }
.cs-meter__seg--current {
    box-shadow: inset 0 0 0 2px var(--ed-graphite);
    height: 12px;
    margin-top: -2px;
}

/* --- 12. Hero (réutilisable, palette éditoriale) ----------------------- */

.cs-hero {
    background: var(--ed-paper);
    background-image: var(--ed-noise);
    background-size: 160px 160px;
    border-bottom: 1px solid var(--ed-line);
    padding: var(--space-16) var(--space-4) var(--space-12);
    position: relative;
}

.cs-hero__inner {
    max-width: 920px;
    margin: 0 auto;
    text-align: left;
}

.cs-hero__eyebrow { margin-bottom: var(--space-4); }
.cs-hero__title {
    font-family: var(--font-display);
    font-size: var(--text-display);
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-display);
    color: var(--ed-graphite);
    font-weight: 700;
    margin: 0 0 var(--space-5);
    max-width: 22ch;
}

.cs-hero__lead {
    font-size: var(--text-lead);
    line-height: var(--leading-normal);
    color: var(--ed-mute);
    max-width: 52ch;
    margin: 0 0 var(--space-8);
}

/* --- Section utility --------------------------------------------------- */

.cs-section {
    padding: var(--space-16) var(--space-4);
}
.cs-section--paper-2 { background: var(--ed-paper-2); }
.cs-section__inner {
    max-width: 920px;
    margin: 0 auto;
}
.cs-section__inner--narrow { max-width: 720px; }
.cs-section__inner--wide   { max-width: 1100px; }

/* --- Section number "01, 02, 03" (white paper signature) -------------- */

.cs-section__num {
    font-family: var(--font-display);
    font-variant-numeric: tabular-nums;
    font-size: var(--text-eyebrow);
    font-weight: 600;
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--ed-saffron);
    display: block;
    margin-bottom: var(--space-3);
}