/* Buttons: primary / secondary / save / spinner */

.btn-primary {
    width: 100%;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--accent-fg);
    background: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.15s ease, transform 0.05s ease;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    margin-top: 4px;
}
.btn-primary-inline { width: auto; min-width: 140px; margin-top: 0; }

.btn-save {
    padding: 10px 18px;
    min-height: 40px;
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border-radius: 6px;
}
.btn-save .btn-save-icon {
    opacity: 0.9;
    transition: transform 0.15s ease;
}
.btn-save:hover:not(:disabled) .btn-save-icon { transform: translateX(-1px); }
.btn-save.loading .btn-save-icon { opacity: 0; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-primary:active:not(:disabled) { transform: translateY(1px); }
.btn-primary:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--focus-ring); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-right-color: currentColor;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
.btn-primary.loading .btn-label { opacity: 0.5; }
.btn-primary.loading .btn-spinner { display: inline-block; }

/* Secondary button */

.btn-secondary {
    padding: 10px 16px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    white-space: nowrap;
}
.btn-secondary:hover { border-color: var(--border-strong); background: var(--bg-subtle); }
.btn-secondary:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--focus-ring); }
.btn-secondary:disabled { opacity: 0.6; cursor: not-allowed; }