.sge-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 10px;
    border: 1px solid transparent;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
    text-decoration: none;
    line-height: 1.2;
    white-space: nowrap;
}

.sge-btn:disabled, .sge-btn.is-loading {
    opacity: 0.6;
    pointer-events: none;
}

.sge-btn-primary {
    background: var(--sge-color-primary);
    color: #fff;
}
.sge-btn-primary:hover { background: var(--sge-color-primary-hover); color: #fff; }

.sge-btn-secondary {
    background: var(--sge-color-surface);
    color: var(--sge-color-text);
    border-color: var(--sge-color-border-strong);
}
.sge-btn-secondary:hover { background: var(--sge-color-surface-soft); }

.sge-btn-ghost {
    background: transparent;
    color: var(--sge-color-text);
}
.sge-btn-ghost:hover { background: var(--sge-color-surface-soft); }

.sge-btn-success {
    background: var(--sge-color-success);
    color: #fff;
}
.sge-btn-success:hover { filter: brightness(0.95); }

.sge-btn-danger {
    background: var(--sge-color-danger);
    color: #fff;
}
.sge-btn-danger:hover { filter: brightness(0.95); }

.sge-btn-block {
    width: 100%;
}

.sge-btn-sm {
    padding: 6px 12px;
    font-size: 13px;
    border-radius: 8px;
}

.sge-btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: 10px;
    background: var(--sge-color-surface);
    border-color: var(--sge-color-border);
}
.sge-btn-icon:hover { background: var(--sge-color-surface-soft); }