/* Block 3: Formats Architectural Grid with Pricing */
.formats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    border-top: 1px solid var(--rule-solid);
    border-left: 1px solid var(--rule-hairline);
    background: var(--bg-vellum);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.format-cell {
    position: relative;
    padding: 36px 32px;
    border-right: 1px solid var(--rule-hairline);
    border-bottom: 1px solid var(--rule-hairline);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 20px;
    transition: background-color 0.3s;
}

.format-cell::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--signal-orange);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.4s var(--ease-luxury);
}

.format-cell:hover {
    background: rgba(255, 255, 255, 0.92);
}

.format-cell:hover::before {
    transform: scaleY(1);
    transform-origin: top;
}

.format-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.format-title {
    font-family: var(--font-display);
    font-size: clamp(1.08rem, 1.7vw, 1.32rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--ink-obsidian);
}

.format-price {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ink-obsidian);
    background: var(--bg-pure);
    border: 1px solid var(--rule-hairline);
    padding: 6px 12px;
    white-space: nowrap;
    transition: background-color 0.25s, color 0.25s, border-color 0.25s;
}

.format-cell:hover .format-price {
    background: var(--ink-obsidian);
    border-color: var(--ink-obsidian);
    color: #FFFFFF;
}

.format-desc {
    font-size: 0.94rem;
    color: var(--ink-slate);
    line-height: 1.6;
}

.formats-guarantee-bar {
    margin-top: 22px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--ink-obsidian);
    background: var(--bg-vellum);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 11px 16px;
    border: 1px solid var(--rule-hairline);
    line-height: 1.45;
}

.formats-guarantee-bar strong {
    color: var(--signal-orange);
    font-weight: 600;
}

/* Block 4: Platforms & Integrations */
.stack-columns {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.stack-group {
    background: var(--bg-vellum);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--rule-hairline);
    padding: 32px;
}

.stack-group-title {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: var(--ink-obsidian);
    padding-bottom: 14px;
    border-bottom: 2px solid var(--signal-orange);
    margin-bottom: 8px;
}

.stack-list {
    list-style: none;
}

.stack-item {
    padding: 16px 0;
    border-bottom: 1px solid var(--rule-hairline);
    display: grid;
    grid-template-columns: 185px 1fr;
    gap: 16px;
    align-items: baseline;
}

.stack-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.stack-name {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--ink-obsidian);
    transition: transform 0.28s var(--ease-luxury), color 0.25s;
}

.stack-item:hover .stack-name {
    transform: translateX(6px);
    color: var(--signal-orange);
}

.stack-note {
    font-size: 0.9rem;
    color: var(--ink-slate);
    line-height: 1.5;
}

/* Block 5: Footer */
.footer-signature {
    display: inline-block;
    text-decoration: none;
    line-height: 0;
}

.footer-signature img {
    height: 44px;
    width: auto;
    display: block;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 32px;
}

.footer-brand {
    justify-self: start;
}

.footer-links {
    justify-self: center;
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-sep {
    width: 5px;
    height: 5px;
    background: var(--signal-orange);
    display: inline-block;
}

.footer-link {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--ink-obsidian);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    padding-bottom: 2px;
    transition: color 0.2s, border-color 0.2s;
}

.footer-link:hover {
    color: var(--signal-orange);
    border-bottom-color: var(--signal-orange);
}

.footer-meta {
    justify-self: end;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--ink-slate);
}

@media (max-width: 820px) {
    .formats-grid, .stack-columns { grid-template-columns: 1fr; }
    .footer-grid {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
        gap: 20px;
    }
    .footer-brand, .footer-links, .footer-meta { justify-self: center; }
    .format-head { flex-direction: column; gap: 10px; }
    .stack-item { grid-template-columns: 1fr; gap: 4px; }
}

@media (max-width: 560px) {
    .format-cell { padding: 22px 18px; gap: 14px; }
    .format-price { white-space: normal; font-size: 0.74rem; }
    .formats-guarantee-bar { width: 100%; font-size: 0.75rem; padding: 12px 14px; }
    .stack-group { padding: 22px 18px; }
    .stack-item { padding: 14px 0; }
}