/* ═══════════════════════════════════════════════════════════════════════
   SALTELLI LOGO SYSTEM v1.1
   ═══════════════════════════════════════════════════════════════════════
   Lockup editoriale tipografico in tre piani.
   Source: Studio Legale Saltelli - Logo.html (Claude Design)
   
   Naming convention: .sl-logo (primary system)
                     .sl-logo--horizontal (variant A header)
                     .sl-logo--mono (variant B monogram favicon/avatar)
                     .sl-logo--stack (variant C footer compact)
   
   Color modes: cream (default) / surface / navy (auto-applies on dark bg)
   Scale: XL hero 132px / M header 38px / S footer 28px / XS favicon 32x32
   ═══════════════════════════════════════════════════════════════════════ */

/* ──────────────────────────────────────────────────────────────────────
   LOGO PRIMARIO — composizione editoriale a tre piani
   Riga 1 — KICKER "STUDIO · LEGALE" — DM Sans 500, lockup con regole
   Riga 2 — WORDMARK "Saltelli" — Playfair Italic, S iniziale bronze
   Riga 3 — PAYOFF — JetBrains Mono, dot bronze
   ────────────────────────────────────────────────────────────────────── */
.sl-logo {
    display: inline-grid;
    justify-items: center;
    gap: 0;
    color: var(--primary);
    text-align: center;
}

.sl-logo__kicker {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 18px;
    margin-bottom: 18px;
    width: 100%;
    min-width: 280px;
}

.sl-logo__kicker::before,
.sl-logo__kicker::after {
    content: "";
    height: 1px;
    background: var(--primary);
    align-self: center;
}

.sl-logo__kicker-text {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: clamp(13px, 1vw, 16px);
    letter-spacing: 0.42em;
    text-transform: uppercase;
    color: var(--primary);
    white-space: nowrap;
    /* Compensate optical right-shift from letter-spacing */
    padding-left: 0.42em;
}

.sl-logo__kicker-text .sl-logo__mark {
    display: inline-block;
    margin: 0 6px;
}

.sl-logo__name {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(72px, 9vw, 132px);
    line-height: 0.95;
    letter-spacing: -0.025em;
    color: var(--primary);
}

.sl-logo__name .sl-logo__swash {
    color: var(--accent);
}

.sl-logo__payoff {
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: clamp(11px, 0.85vw, 13px);
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 18px;
}

.sl-logo__payoff .sl-logo__dot {
    display: inline-block;
    width: 3px;
    height: 3px;
    background: var(--accent);
    border-radius: 50%;
    transform: translateY(-3px);
    margin: 0 10px;
}

/* ──────────────────────────────────────────────────────────────────────
   VARIANTE A — ORIZZONTALE (Header sito · Email signature)
   Layout 3-col: [text-stack] | [hairline rule] | [wordmark]
   ────────────────────────────────────────────────────────────────────── */
.sl-logo--horizontal {
    display: inline-grid;
    grid-template-columns: auto 1px auto;
    align-items: center;
    gap: 24px;
    text-align: left;
    color: var(--primary);
    white-space: nowrap;
    text-decoration: none;
}

.sl-logo--horizontal .sl-logo__h-left {
    display: grid;
    justify-items: end;
    gap: 2px;
}

.sl-logo--horizontal .sl-logo__h-top {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 10px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--primary);
}

.sl-logo--horizontal .sl-logo__h-bot {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.sl-logo--horizontal .sl-logo__h-rule {
    height: 36px;
    background: var(--primary);
    width: 1px;
}

.sl-logo--horizontal .sl-logo__h-name {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 400;
    font-size: 32px;
    line-height: 1;
    letter-spacing: -0.02em;
    color: var(--primary);
    white-space: nowrap;
}

.sl-logo--horizontal .sl-logo__h-name .sl-logo__swash {
    color: var(--accent);
}

/* Hover state header (subtle) */
.sl-logo--horizontal:hover .sl-logo__h-name,
.sl-logo--horizontal:focus-visible .sl-logo__h-name {
    color: var(--accent);
    transition: color var(--dur-fast, 200ms) var(--ease-quart-out, cubic-bezier(0.25, 1, 0.5, 1));
}

/* ──────────────────────────────────────────────────────────────────────
   VARIANTE B — MONOGRAMMA (Favicon · Avatar social · Sigillo atti)
   Cerchio doppio: outer primary 1px, inner accent 1px (offset 4px)
   "S" centrato Playfair italic
   ────────────────────────────────────────────────────────────────────── */
.sl-logo--mono {
    display: grid;
    justify-items: center;
    gap: 14px;
    color: var(--primary);
    text-align: center;
}

.sl-logo--mono .sl-logo__seal {
    width: 88px;
    height: 88px;
    border: 1px solid var(--primary);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-family: var(--font-display);
    font-style: italic;
    font-size: 44px;
    line-height: 1;
    color: var(--primary);
    position: relative;
}

.sl-logo--mono .sl-logo__seal::after {
    content: "";
    position: absolute;
    inset: 4px;
    border: 1px solid var(--accent);
    border-radius: 50%;
    opacity: 0.55;
}

.sl-logo--mono .sl-logo__seal--small {
    width: 32px;
    height: 32px;
    font-size: 18px;
    border-width: 1px;
}

.sl-logo--mono .sl-logo__seal--small::after {
    inset: 2px;
}

.sl-logo--mono .sl-logo__m-name {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.36em;
    text-transform: uppercase;
}

.sl-logo--mono .sl-logo__m-pay {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* ──────────────────────────────────────────────────────────────────────
   VARIANTE C — STACK COMPATTO (Footer · Watermark documenti)
   3 righe: kicker | wordmark italic | payoff
   ────────────────────────────────────────────────────────────────────── */
.sl-logo--stack {
    display: grid;
    justify-items: center;
    gap: 4px;
    text-align: center;
    color: var(--primary);
}

.sl-logo--stack .sl-logo__s-row1 {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.42em;
    text-transform: uppercase;
}

.sl-logo--stack .sl-logo__s-row2 {
    font-family: var(--font-display);
    font-weight: 400;
    font-style: italic;
    font-size: 56px;
    line-height: 0.95;
    letter-spacing: -0.02em;
    color: var(--primary);
}

.sl-logo--stack .sl-logo__s-row3 {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ──────────────────────────────────────────────────────────────────────
   COLOR MODES — Adattamento automatico su sfondo navy (footer)
   ────────────────────────────────────────────────────────────────────── */

/* Su fondo navy (footer dark): testo cream, accento bronze preservato */
.sl-footer .sl-logo,
.sl-footer .sl-logo--horizontal,
.sl-footer .sl-logo--mono,
.sl-footer .sl-logo--stack,
[data-logo-mode="navy"] .sl-logo,
[data-logo-mode="navy"] .sl-logo--horizontal,
[data-logo-mode="navy"] .sl-logo--mono,
[data-logo-mode="navy"] .sl-logo--stack {
    color: var(--background);
}

.sl-footer .sl-logo__kicker-text,
.sl-footer .sl-logo__name,
.sl-footer .sl-logo--horizontal .sl-logo__h-top,
.sl-footer .sl-logo--horizontal .sl-logo__h-name,
.sl-footer .sl-logo--stack .sl-logo__s-row1,
.sl-footer .sl-logo--stack .sl-logo__s-row2 {
    color: var(--background);
}

.sl-footer .sl-logo__kicker::before,
.sl-footer .sl-logo__kicker::after,
.sl-footer .sl-logo--horizontal .sl-logo__h-rule {
    background: var(--background);
}

.sl-footer .sl-logo__payoff,
.sl-footer .sl-logo--horizontal .sl-logo__h-bot,
.sl-footer .sl-logo--stack .sl-logo__s-row3 {
    color: rgba(255, 255, 255, 0.55);
}

.sl-footer .sl-logo--mono .sl-logo__seal {
    color: var(--background);
    border-color: var(--background);
}

/* L'accento bronze "S" è SEMPRE preservato */
.sl-footer .sl-logo__swash,
.sl-footer .sl-logo--horizontal .sl-logo__swash,
[data-logo-mode="navy"] .sl-logo__swash {
    color: var(--accent);
}

/* ──────────────────────────────────────────────────────────────────────
   RESPONSIVE — Mobile sotto 768px
   ────────────────────────────────────────────────────────────────────── */
@media (max-width: 767px) {
    .sl-logo--horizontal {
        gap: 16px;
    }
    .sl-logo--horizontal .sl-logo__h-name {
        font-size: 24px;
    }
    .sl-logo--horizontal .sl-logo__h-top {
        font-size: 9px;
        letter-spacing: 0.28em;
    }
    .sl-logo--horizontal .sl-logo__h-bot {
        font-size: 8px;
        letter-spacing: 0.20em;
    }
    .sl-logo--horizontal .sl-logo__h-rule {
        height: 28px;
    }

    .sl-logo--stack .sl-logo__s-row2 {
        font-size: 40px;
    }
}