/* Buttons shared across the architecture page */

.primary-btn {
    padding: 7px 16px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: var(--surface-sunken);
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.82rem;
    cursor: pointer;
    transition: box-shadow 0.2s ease, transform 0.15s ease;
}

.primary-btn:hover {
    box-shadow: 0 0 16px rgba(56, 189, 248, 0.4);
    transform: translateY(-1px);
}

.primary-btn:disabled {
    opacity: 0.5;
    cursor: default;
    box-shadow: none;
    transform: none;
}

.ghost-btn {
    padding: 6px 13px;
    background: var(--surface-hover);
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.8rem;
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.ghost-btn:hover {
    color: var(--text);
    border-color: var(--accent-blue);
}

/* Per-technology description + upgrade impact */

.arch-desc-block {
    margin-bottom: 22px;
}

.arch-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-dim);
    margin-bottom: 6px;
}

.arch-desc-textarea {
    width: 100%;
    resize: vertical;
    background: var(--surface-sunken);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.88rem;
    padding: 10px 12px;
}

.arch-desc-textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.arch-desc-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
}

.save-status {
    font-size: 0.78rem;
    color: var(--accent-lime);
}

.upgrade-panel {
    border-top: 1px solid var(--border);
    padding-top: 18px;
}

.upgrade-panel h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    margin: 0 0 12px;
}

.upgrade-form {
    display: flex;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 16px;
}

.upgrade-form label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.78rem;
    color: var(--text-dim);
}

.upgrade-form select {
    background: var(--surface-sunken);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: 7px 10px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    min-width: 200px;
}

.upgrade-result:empty {
    display: none;
}

.sim-summary {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 10px;
}

.sim-range {
    font-family: var(--font-mono, monospace);
    font-size: 0.82rem;
    color: var(--text-dim);
}

.sim-text {
    color: var(--text);
    font-size: 0.92rem;
    margin: 0 0 10px;
}

.sim-caveat {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.3);
    color: var(--sev-medium);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-size: 0.82rem;
    margin: 0 0 12px;
}

.sim-error {
    color: var(--sev-high);
    font-size: 0.88rem;
}

.sim-list {
    margin-bottom: 12px;
}

.sim-list h4 {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-faint);
    margin: 0 0 6px;
}

.sim-list ul {
    margin: 0;
    padding-left: 20px;
    color: var(--text-dim);
    font-size: 0.88rem;
}

.sim-list li {
    margin-bottom: 4px;
}

.sim-evidence {
    margin-top: 14px;
    font-size: 0.85rem;
    color: var(--text-dim);
}

.sim-evidence summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text);
}

.sim-evidence ul {
    margin: 8px 0 0;
    padding-left: 20px;
}

.sim-evidence a {
    color: var(--accent-cyan);
}

@media (max-width: 720px) {
    .upgrade-form select {
        min-width: 0;
        flex: 1 1 auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    .primary-btn,
    .ghost-btn {
        transition: none;
    }
}